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GJ Consulting Group · Hampton Roads

Financial Resources Built for Contractors

A working library of financial guidance for contractors, trades and home-service businesses: job costing, cash flow, QuickBooks, tax readiness and the numbers worth watching as you grow. Written in plain language by an accounting firm that works with owner-operated businesses, with checklists you can use on your own books today.

35 min read 30 questions answered Free · nothing gated Updated

Who this guide is for

  • General contractors
  • Remodelers
  • Roofing
  • HVAC
  • Electrical
  • Plumbing
  • Landscaping
  • Specialty trades
  • Home services

Written for owner-operators and growing contracting businesses — no accounting background assumed.

Topic areas

The Eight Areas That Decide Whether a Contracting Business Makes Money

Each area below is a place where contractors commonly lose margin without seeing it. Use them as a map of what to get right, in roughly the order they tend to matter.

  • Job Costing & Project Profitability

    Tracking revenue and cost against each individual job, so you know which work makes money instead of guessing from the bank balance.

    • Labor costed at a burdened rate, not the wage
    • Change orders priced and captured before the work starts
    • Estimate compared to actual on every completed job
  • Cash Flow Management

    Managing the timing gap between paying for labor and materials and getting paid by the customer.

    • Deposits and progress billing tied to real milestones
    • Receivables aged and chased on a schedule
    • Retainage tracked separately so it isn't forgotten
  • QuickBooks for Contractors

    Setting up the file so it produces job-level answers rather than a single company-wide profit number.

    • Chart of accounts that separates direct job costs from overhead
    • Customers and jobs structured for project reporting
    • Bank and credit card accounts reconciled every month
  • Tax Planning & Readiness

    Staying organized through the year so filing is a summary of what happened, not an investigation.

    • Business and personal spending kept separate
    • Documentation captured as it happens
    • Estimated payments planned rather than reacted to
  • Financial Reporting & KPIs

    A short set of numbers reviewed on a schedule, so trends show up while they can still be corrected.

    • Gross margin by job type and by crew
    • Overhead as a share of revenue
    • Cash position and receivables aging
  • Growth & Financial Readiness

    The financial systems a contractor needs when the owner stops being on every job.

    • Job costing that works without the owner's memory
    • Reporting a lender or bonding agent can actually read
    • Working capital sized to the jobs you want to take
  • Equipment & Capital Decisions

    Evaluating vehicles, tools and equipment as financial decisions rather than as purchases.

    • Utilization: how many billable hours it will actually work
    • Total cost including insurance, fuel, maintenance, storage
    • Cash impact of the payment against your slowest month
  • Payroll & Workforce Costs

    Understanding what an employee truly costs and what they must produce to pay for themselves.

    • Burdened labor rate, not the hourly wage
    • Non-billable time measured, not assumed
    • Worker classification reviewed against current rules
Resources

Six Practical Resources You Can Use on Your Own Books

Each one opens in full on this page. Nothing is behind a form, and nothing here requires you to hire anyone to get value from it.

Contractor Financial Health Checklist Printable

Twelve checks that tell you where your financial house is solid and where it needs attention.

Work through these twelve checks once a quarter. Anything you can't answer confidently is not a failure — it's simply the next thing to fix. Most contractors find three or four gaps the first time through, and closing even one of them changes what the business feels like to run.

  • Job costing. You can name your three most profitable and three least profitable jobs from the last twelve months, with numbers behind the answer.
  • Burdened labor. You know what an hour of field labor actually costs you, including payroll taxes, insurance, benefits and non-billable time — not just the wage. Getting hours attributed to jobs is largely a payroll setup question.
  • Overhead recovery. You know roughly what your business costs to keep the doors open each month, and your pricing is built to cover it.
  • Markup vs. margin. You price using margin, and you know the difference between adding a percentage to cost and keeping a percentage of the price.
  • Change orders. Extra work is documented, priced and approved before it's performed, and it shows up in job profitability.
  • Receivables. You know today who owes you money and how long it has been outstanding.
  • Retainage. If you work on jobs with retainage, it's tracked separately and someone is responsible for collecting it.
  • Reconciliation. Every bank and credit card account was reconciled last month, and the month before.
  • Separation. Business and personal spending run through different accounts, consistently.
  • Cash runway. You know how many weeks of payroll and fixed costs you could cover if collections stopped.
  • Tax readiness. You have a plan for estimated payments and you aren't discovering your tax position at filing time.
  • Monthly rhythm. There is a recurring appointment on your calendar to look at your numbers, and you keep it.
How to use this. Score nothing. Just mark the items you can't answer and pick the single one that would take the most pressure off. For most contractors that's job costing or receivables.

Pro tip

Do this with someone else in the room — a spouse, a partner, an office manager. Owners consistently rate their own books more favourably than a second person does, and the gap between the two answers is usually where the real work is.

Job Costing Checklist

A framework for reviewing labor, materials, subs, overhead and change orders — plus the markup and margin conversion table.

Job costing means assigning every dollar of revenue and cost to the specific job that produced it. It's what turns "we had a decent year" into "kitchen remodels earn well and small service calls lose money." Without it, unprofitable work can repeat for years because good jobs quietly subsidize bad ones.

What to capture on every job

  • Direct labor, burdened. Field hours costed at the fully loaded rate — wage plus payroll taxes, workers' compensation, general liability, benefits and paid time off. Using the raw wage understates cost substantially on every job you run.
  • Materials. Coded to the job at the time of purchase. Receipts assigned weeks later get assigned to the wrong job or to none at all.
  • Subcontractors. Their invoices tied to the job, with retainage and any backcharges reflected.
  • Equipment and vehicle time. If a machine or truck is dedicated to a job, some of its cost belongs to that job.
  • Change orders. Documented, priced and approved before the work happens. Unbilled extras are one of the most common sources of margin loss in the trades.
  • Overhead allocation. A consistent method for applying the cost of running the business to the jobs that the business runs.

The review that makes it worth doing

Capturing costs is only half of it. When a job closes, compare estimate to actual line by line, and ask which line moved and why. Do that for a few months and patterns appear fast: a crew that consistently beats estimate, a job type that consistently doesn't, a supplier whose prices moved while your pricing didn't.

Markup is not margin

This single confusion costs contractors more money than almost anything else in this library. Markup is a percentage added to your cost. Margin is the percentage of the final price that you keep. Adding 20% to a $10,000 cost gives a $12,000 price — but the $2,000 you kept is only 16.7% of that price, not 20%.

To achieve a given gross margin, apply this markup to cost. Figures are arithmetic conversions, rounded to one decimal place.
Gross margin you wantMarkup to add to costPrice on $10,000 of cost
10%11.1%$11,111
15%17.6%$11,765
20%25.0%$12,500
25%33.3%$13,333
30%42.9%$14,286
35%53.8%$15,385
40%66.7%$16,667
50%100.0%$20,000
The formula. Price = Cost ÷ (1 − margin). To hold a 30% margin on $10,000 of cost: $10,000 ÷ 0.70 = $14,286. The right margin for your business depends on your overhead, your market and the risk you carry — this table converts between the two measures, it doesn't tell you which number to target.
What "add 20%" actually gets you Cost $4,000 +$800 Price $4,800 Profit is $800 of a $4,800 price — a 16.7% margin, not 20%. Pricing for a real 20% margin Cost $4,000 +$1,000 Price $5,000 A 25% markup produces the 20% margin. The gap is $200 per job.
Markup vs. margin on a $4,000 job cost. Adding 20% to cost yields a 16.7% margin; a true 20% margin requires a 25% markup.
Worked example · plumbing contractor

What the Markup-Margin Mix-Up Costs Over a Year

A plumbing contractor prices repipe jobs by adding 20% to cost. Average job cost is $4,000, so the price is $4,800 and the profit is $800. He believes he is earning a 20% margin. He is earning 16.7%.

Price at 20% markup$4,800
Price needed for a true 20% margin$5,000
Shortfall per job$200
Across 150 jobs a year$30,000

The point: nothing about how he runs jobs is wrong. The pricing formula is. This is the single most common and most correctable margin leak in the trades. Figures are illustrative.

Worked example · roofing company

A Single Job, Costed Properly

Contract price$18,000
Materials$6,200
Field labor (96 hrs × $38 burdened)$3,648
Subcontracted gutter work$1,400
Dumpster and equipment$650
Total direct job cost$11,898
Gross profit (33.9% margin)$6,102
Overhead allocated at 18% of revenue−$3,240
Profit after overhead (15.9%)$2,862

What this shows: the job looks like a 34% job until overhead is applied, and a 16% job afterwards. If this roofer had used the raw $28 wage instead of the $38 burdened rate, labor would have read $2,688 and the job would have appeared roughly $960 more profitable than it was. Figures are illustrative; use your own costs.

Worked example · electrical contractor

Building a Burdened Labor Rate

Base hourly wage$28.00
Employer payroll taxes$2.60
Workers' compensation$3.20
General liability$0.90
Benefits and paid time off$2.80
Burdened cost per paid hour$37.50

Then adjust for time that isn't billable. If drive time, shop time and callbacks mean only 80% of paid hours reach a job, the real cost per billable hour is $37.50 ÷ 0.80 = $46.88 — 67% above the wage.

Do this yourself: insurance and tax rates vary by state, trade and claims history, so build the table with your own numbers rather than these. The structure is what transfers.

Common mistakes

Costing labor at the wage. Understates every job by 30–70%, and the error grows with labor-heavy work.

Leaving overhead out entirely. Gross margin looks healthy while the company loses money.

Coding material receipts weeks later. They land on the wrong job or none at all, quietly corrupting every job report.

Treating small change orders as goodwill. Ten unbilled extras a year at $400 each is $4,000 of pure profit given away.

Estimate Track costs Change orders Close & invoice Compare Priced by margin Coded daily Approved first Nothing missed Estimate vs actual What you learn here corrects the next estimate
The job cost lifecycle. The loop from "compare" back to "estimate" is the step most contractors skip, and it is the one that compounds.

Need Help Setting Up Job Costing?

GJ Consulting Group can structure your chart of accounts and job tracking so these reports come out of your books automatically each month.

Cash Flow Planning for Contractors

Why profitable contractors run short of cash, and the practical levers that close the gap.

Profit is what you earned; cash is what you have. Contracting separates the two more than almost any other business, because you buy materials and pay crews weeks or months before the customer pays you. A growing contractor can be profitable on every job and still be unable to make payroll — growth consumes cash before it produces it.

Where the gap comes from

  • You fund the job first. Materials and labor go out at the start; the invoice gets paid at the end.
  • Retainage is held back. A portion of money you have already earned is withheld until the project closes out, sometimes long after your costs were paid.
  • Slow paying customers. Every day between completing work and collecting on it is a day you're financing your customer.
  • Seasonality. Many trades have months where revenue drops but insurance, vehicle payments and key staff costs don't.
  • Growth itself. Taking on more or bigger jobs increases the amount of cash tied up in work you haven't been paid for yet.

The levers you actually control

  • Get money earlier in the job. Deposits, mobilization payments and progress billing tied to real milestones move cash toward the front of the work.
  • Bill immediately. Invoicing delay is self-inflicted. If a milestone completes Friday, the invoice goes out Friday.
  • Age your receivables weekly. Know who owes what and for how long. Most late payment is inattention, not refusal, and a call in week three works better than a letter in month three.
  • Track retainage separately. If it isn't on a list with a name against it, it doesn't get collected.
  • Match supplier terms to customer terms. If your customer pays in 45 days and your supplier expects 15, that gap is being financed out of your own pocket.
  • Plan for the slow season while it's the busy season. Set money aside during peak months rather than borrowing during quiet ones.
  • Forecast simply, but forecast. A rolling week-by-week view of expected money in and money out, kept for a few months ahead, turns cash from a surprise into a decision.
Week 1 Weeks 1–6 Week 7 Week 10 Week 20 Materials bought Payroll every week Invoice sent Payment lands Retainage released cash out cash out cash in cash in You finance this job for about ten weeks
The contractor cash flow gap: costs are paid at the start of a job, revenue arrives at the end, and retainage arrives later still.
Worked example · remodeling company

A Profitable Job That Still Strains Cash

Kitchen remodel contract$120,000
Materials, labor and subs paid weeks 1–8$93,000
Gross profit (22.5% margin)$27,000
Retainage held back at 10%$12,000
Share of the job's profit still uncollected44%

What this shows: the job earned $27,000, but $12,000 of it sits in retainage that may not arrive for 60 to 90 days after closeout. The remodeler has already paid every cost. Run three of these at once and the business is profitable and short of cash at the same time. Figures are illustrative.

Worked example · commercial contractor

Underbilling: The Leak You Cannot See on a P&L

Contract value$200,000
Estimated total cost$150,000
Costs incurred to date$90,000
Percent complete (90,000 ÷ 150,000)60%
Revenue earned (60% × $200,000)$120,000
Actually billed to date$105,000
Underbilled$15,000

What this shows: $15,000 of work is finished, unpaid and uninvoiced. A work-in-progress schedule surfaces this every month; a profit and loss statement alone will not. Underbilling is the most common reason a busy contractor feels broke. Figures are illustrative.

Watch for this

Growth is the most dangerous cash flow event a contractor faces, because it looks like success while it drains the bank account. Every new job started before the last one is collected widens the gap. Contractors rarely fail from lack of work — they fail from taking work they could not fund.

A useful question. If collections stopped tomorrow, how many weeks of payroll and fixed costs could you cover? Knowing that number changes how you bid, hire and buy. There is no universal target — it depends on your job length, seasonality and how much of your work is with slow-paying customers.

Section summary

  • Profit is earned during the job; cash arrives after it, and retainage later still.
  • The levers you control are billing speed, deposits, milestone billing and collections discipline.
  • Underbilling hides on the profit and loss statement and shows up in a WIP schedule.
  • Know your weeks of cash on hand before you take the next big job.

Ready to Improve Cash Flow?

A short review of your billing cycle, receivables and retainage often finds weeks of cash sitting in the process itself.

QuickBooks for Contractors: What to Review Every Month

A monthly routine that keeps the file trustworthy and catches problems in weeks instead of years.

A monthly close takes most contractors under two hours and is the single highest-return administrative habit in the business. The goal isn't perfect bookkeeping — it's a file you trust enough to make decisions from. Work through this list in order; each step depends on the one before it.

The monthly routine

  • Reconcile every account. All bank accounts, credit cards and loans. Unreconciled accounts make every report downstream unreliable. If reconciliation has lapsed for several months, catching up is usually faster with help — it is a common starting point for ongoing bookkeeping support.
  • Clear the uncategorized bucket. Anything sitting in "Ask my accountant" or uncategorized is a decision nobody has made yet.
  • Check that job costs are coded to jobs. Material purchases, subcontractor bills and labor should be attached to the job they belong to, not to a general expense account.
  • Review the job profitability report. Compare estimate to actual on open and recently closed jobs. Look for jobs drifting, not just jobs finished.
  • Age your receivables. Who owes you, how much, how long. Act on anything past your terms.
  • Age your payables. What you owe and when, so payment timing is a choice rather than a scramble.
  • Scan the profit and loss against last month and the same month last year. You're looking for lines that moved unexpectedly, not for a verdict.
  • Check the balance sheet for nonsense. Negative asset balances, an unreconciled clearing account or an owner's draw account behaving strangely usually indicate a coding problem.
  • Confirm payroll posted correctly and that liabilities were paid on schedule.
  • Look at cash. What's in the bank, what's committed, what's coming in over the next few weeks.

Setup problems that make the monthly review harder than it should be

  • A chart of accounts that doesn't separate direct job costs from overhead. Without that split, gross margin isn't meaningful.
  • Jobs not set up as jobs. If work isn't tracked at the project level, no report can tell you which jobs earned.
  • Personal spending mixed into the business file. It distorts every number and makes tax preparation slower and more expensive.
  • Items and services not mapped to the right accounts, so revenue and cost land in unexpected places.
  • Bank feeds accepted without review. Auto-categorization is a starting point, not an answer.
1. Reconcile every account 2. Code costs to jobs 3. Review jobs AR and AP 4. Review P&L, BS, cash Each stage depends on the one before it — reconciliation first, always.
The monthly close sequence for a contractor. Most contractors can complete all four stages in under two hours once the file is set up correctly.
Direct job costs — coded to the job Materials Field labor Subcontractors Equipment Overhead — allocated across all jobs Rent · office staff · insurance · software · unassigned vehicles
Job cost allocation. A contractor chart of accounts must keep these two groups separate, or gross margin becomes meaningless.
If you only do one thing: reconcile every account, every month. Nearly every messy contractor file traces back to reconciliation that stopped at some point and was never restarted.

Best practice

Put the close on the calendar as a recurring appointment in the first week of each month, and treat it like a customer commitment. The contractors who get the most out of their books are not the ones with the most sophisticated systems — they are the ones who look at them on a schedule.

Want Your QuickBooks Set Up Correctly?

GJ Consulting Group are Intuit Certified QuickBooks Online professionals and can restructure your file so job costing works and the monthly close is quick.

Contractor Tax Planning Checklist

Preparation and organization that make tax season a summary rather than an investigation.

Most of what makes tax time painful is organization, not tax law. This checklist is about readiness — the records, separation and habits that let a qualified professional do good planning work for you. It deliberately avoids specific rates, thresholds and deadlines, because those change and depend on your situation.

Keep the year clean

  • Separate accounts. A dedicated business bank account and card, used consistently. This is the highest-value habit on the list.
  • Books current within a month. Reconstruction at year end is slower, costlier and less accurate than doing it as you go.
  • Receipts captured at the point of purchase, attached to the transaction rather than collected in a box.
  • Vehicle and equipment use documented as it happens. Contemporaneous records are far more defensible than an estimate written later.
  • Subcontractor documentation collected before you pay them, not chased in January.
  • Worker classification reviewed whenever your crew structure changes. The rules are fact-specific and the consequences of getting it wrong fall on the business.

Plan rather than react

  • Estimated payments treated as a scheduled cost, set aside as money comes in rather than found later.
  • A mid-year and a late-year check-in with your accountant, while there is still time to act. A conversation in November has options that a conversation in March does not. This is the core of planning-led tax preparation rather than filing after the fact.
  • Major purchases discussed before you make them. Timing and structure can matter, and the decision should still be driven by whether the business needs the asset.
  • Entity structure revisited as the business grows, since what fit an owner-operator may not fit a company with crews.
  • Retirement and benefit options reviewed, which for many owners is the most overlooked area of planning.

Worker classification carries real risk

Whether a crew member is an employee or an independent contractor is determined by the facts of the working relationship, not by preference or by what the paperwork says. Misclassification exposes the business to back taxes, penalties and interest, and the exposure sits with the business rather than the worker.

The IRS publishes guidance on the distinction and offers Form SS-8 for a formal determination. Because the rules are fact-specific, review your arrangements with a qualified professional whenever your crew structure changes. See the IRS Small Business and Self-Employed Tax Center.

Pro tip

Move a fixed percentage of every customer payment into a separate tax savings account on the day it clears. Contractors who do this stop experiencing estimated payments as a shock, because the money was never in the operating balance to begin with. Your accountant can help you set the percentage from your actual results rather than a guess.

Please note. Tax treatment depends on the facts and circumstances of your business and on rules that change. Nothing here is tax advice for your situation — it is a preparation checklist. Talk to a qualified professional about your specific circumstances before acting.

Want Tax Season to Be a Summary Instead of a Scramble?

GJ Consulting Group handles bookkeeping and tax preparation together, so the return is built from records that were already current.

Financial KPIs Every Contractor Should Understand

Eight numbers worth watching, what each one tells you, and how to read a change in it.

You don't need a dashboard; you need about eight numbers and the habit of looking at them. What matters is the direction each one moves over time in your business, not how it compares to an industry average. Published benchmarks vary widely by trade, region and job mix, so treat your own trend as the reliable signal.

  • Gross margin by job. Revenue minus direct job costs, as a percentage of revenue. The clearest read on whether your pricing and production are working. Watch it by job type — the average across all work hides the problem.
  • Overhead as a share of revenue. What it costs to keep the business running, relative to what the business brings in. Rising overhead share while revenue grows is an early warning worth taking seriously.
  • Net profit margin. What's left after everything. Useful as a trend line rather than a monthly verdict. Owners who want this interpreted monthly rather than just reported often use fractional CFO support.
  • Cash on hand, expressed in weeks. How long you could cover payroll and fixed costs if collections paused. The most practically useful number on this list.
  • Days sales outstanding. How long, on average, it takes to get paid after invoicing. If it's lengthening, your cash problem is a collections problem.
  • Backlog. The value of work you've sold but not yet completed. Your best forward view of revenue and of whether you need to be selling harder.
  • Estimate accuracy. How close actual job costs land to estimated ones, tracked over time. Consistent overruns in one category tell you exactly where to fix your bidding.
  • Labor utilization. The share of paid field hours that are billable. Small movements here have an outsized effect on profitability.
Worked example · HVAC contractor

Turning Overhead Into an Hourly Rate You Can Bid With

Annual overhead$180,000
Billable field hours (4 techs × 1,500 hrs)6,000
Overhead per billable hour$30.00
Burdened labor cost per hour$38.00
Break-even hourly rate$68.00
Rate needed for a 25% margin ($68 ÷ 0.75)$90.67

What this shows: at $68 an hour this contractor works for free. Anything below that loses money on every hour billed. Most contractors who discover they are underpriced find it through this calculation rather than through their P&L. Figures are illustrative.

Worked example · landscaping company

Days Sales Outstanding, Calculated

Annual revenue$1,140,000
Revenue per day ($1,140,000 ÷ 365)$3,123
Average accounts receivable$95,000
Days sales outstanding30.4 days

How to read it: the number itself matters less than its direction. If this contractor's DSO moves from 30 to 42 days over two quarters, roughly $36,000 of additional cash is tied up in receivables that was previously available. Figures are illustrative.

How to use them. Pick three. Look at them monthly for a quarter before adding more. A number you review consistently is worth more than a report you generate once and never open.
A one-page monthly view Gross margin by job type Overhead % of revenue Weeks of cash on hand Days sales outstanding Backlog Labor utilization by trade, not blended watch the direction your safety margin collections speed sold, not yet built billable share of hours Layout only — the bars are illustrative and carry no values.
An illustrative contractor dashboard layout. The bars show arrangement only and carry no values — your own figures and their direction over time are what matter.

Contractor insight

Be careful with published industry benchmarks. Margin and overhead figures for "construction" blend residential service work with heavy commercial contracting, and the two behave nothing alike. A residential remodeler and a site contractor can both be run well and still report margins twenty points apart. Your own trend line over six months is a more reliable guide than any national average.

Want Reporting That Answers These Questions Every Month?

Fractional CFO support gives you the numbers, the interpretation and a standing conversation about what to do next — without a full-time hire.

Templates & checklists

Six Tools You Can Put to Work This Week

Every one of these is published in full on this page. Open it, use it, or print it to PDF and keep it on the truck — no form, no email address, no wait.

  • Checklist · 12 checks

    Contractor Financial Health Checklist

    The quarterly review that tells you where your financial house is solid and where it needs attention. Best done with a second person in the room.

  • Framework · with worked examples

    Job Costing Checklist

    What to capture on every job, how to review estimate against actual, and the margin-to-markup conversion table that fixes most contractor pricing errors.

  • Guide · cash flow

    Cash Flow Planning for Contractors

    Where the gap between profit and cash comes from, the levers you actually control, and worked examples covering retainage and underbilling.

  • Checklist · monthly

    Monthly Close Checklist

    The ten-step routine that keeps a QuickBooks file trustworthy, in the order the steps have to happen. Most contractors finish it in under two hours.

  • Checklist · annual

    Year-End Tax Preparation Checklist

    The records, separation and habits that let a qualified professional do real planning work — written around organization rather than tax rules that change.

  • Reference · 8 measures

    Contractor KPI Reference

    The eight numbers worth watching, what each one tells you, how to read a change in it, and worked examples for overhead recovery and days sales outstanding.

Want the Editable Spreadsheet Versions?

We're preparing working spreadsheet versions of three of the tools above — a job costing worksheet, a 13-week cash flow forecast, and a KPI tracker — so you can enter your own numbers instead of rebuilding them. Leave your email and GJ Consulting Group will send them when they're ready, along with occasional updates to this guide. Nothing else.

Used only to send the templates and occasional guide updates.

Editable spreadsheet versions are being prepared.

Check back soon, or contact GJ Consulting Group if you'd like to be notified when they become available. Everything else on this page is ready to use right now.

Every resource on this page stays free and ungated whether or not you sign up.

Self-assessment

Contractor Financial Readiness Snapshot

Seven areas, three statements each. Check the ones that are true of your business today and the panel will show which financial-management practices you already have in place and which are worth reviewing. It reflects your own answers only — it is not a financial diagnosis, and nothing is sent anywhere or saved.

Cash Flow Visibility
Job Costing
Project Profitability
Tax Readiness
Financial Reporting
Bookkeeping Organization
Growth Readiness
Questions

Questions Contractors Ask About Their Numbers

Thirty straight answers to the questions contractors actually ask, grouped by topic. Where the honest answer is "it depends," we say what it depends on rather than hedging.

Job Costing, Cash Flow & Monthly Management

How can I tell which jobs are actually profitable?

Assign every cost to the job that caused it, then compare each job's revenue to its total cost. That means burdened labor, materials, subcontractors and an allocation of overhead — not just the obvious invoices. Company-level profit can't answer this question, because profitable jobs routinely disguise unprofitable ones.

Why can a profitable contracting business still have cash-flow problems?

Because profit is earned before it's collected. You pay for labor and materials during the job and get paid after it, and retainage can hold back part of your money longer still. Growth widens the gap, since more work means more cash tied up in jobs you haven't been paid for yet.

How often should I review job costs?

Review open jobs at least monthly and every job when it closes. On longer or larger projects, weekly is better — a job drifting over budget can often still be corrected while work is in progress, but never after the final invoice has gone out.

What financial reports should a contractor review every month?

Five: a job profitability report, a profit and loss compared against prior periods, a balance sheet, an accounts receivable aging and a short cash position summary. Reviewed together each month, they catch nearly every problem that would otherwise surface a year later at tax time.

How should change orders be reflected in job profitability?

A change order should be documented, priced and approved before the work happens, then added to the job's contract value with its costs tracked against it. Extra work performed on a handshake and billed later — or never — is one of the most common ways margin quietly disappears from an otherwise well-run job.

When does a contractor need more sophisticated bookkeeping?

Usually when the owner stops being on every job. The trigger isn't revenue — it's the point where you can no longer hold job status in your head, or when running multiple crews, longer projects, retainage or a lending relationship means decisions depend on records rather than recall.

What should I review in QuickBooks every month?

Reconcile every bank, card and loan account first, then clear anything uncategorized, confirm job costs are coded to jobs, and review job profitability, receivables aging, the profit and loss and the balance sheet. Reconciliation comes first because every report after it is unreliable without it.

How much working capital should a growing contractor maintain?

There's no universal figure, and any single number you see quoted should be treated with suspicion. Work it out from your own business: how long your jobs run, how long customers take to pay, how much retainage is held, and what your fixed costs are each month. The practical version of the question is how many weeks you could operate if collections stopped.

What financial information should I have before hiring additional employees?

Three things: the burdened cost of the role, not the wage; the billable revenue that person needs to generate to cover it; and enough confirmed backlog to keep them working. Then check the cash timing — payroll starts immediately, while the revenue they produce arrives after the work is completed and collected.

What should I consider financially before purchasing equipment?

Start with utilization: how many billable hours it will genuinely work, versus renting when you need it. Then total cost of ownership including insurance, fuel, maintenance and storage, and the effect of the payment on your slowest month. Tax treatment can matter, but it shouldn't drive a purchase the business doesn't need — and it depends on your circumstances, so discuss it before you buy.

What records should I maintain for tax planning?

Complete, current books in a business-only account, with receipts attached to transactions as they occur. Keep contemporaneous records for vehicle and equipment use, collect subcontractor documentation before you pay, and retain contracts and change orders. Requirements vary by situation, so confirm specifics with a qualified professional.

What numbers should I watch as my contracting business grows?

Gross margin by job type, overhead as a share of revenue, weeks of cash on hand, days sales outstanding, backlog, estimate accuracy and labor utilization. Watch your own trend rather than published averages, which vary widely by trade and region. Pick three and review them monthly before adding more.

Pricing & Profitability

What gross margin should a contractor target?

There is no single correct figure, and margins that are healthy for a residential service company can be unrealistic for heavy commercial work. Set your target from your own overhead and the risk you carry: work out what overhead costs you per billable hour, add your burdened labor cost, then price above that to leave the profit you need. Your own trend over time is more reliable than any published average.

How do I price a job so overhead is actually covered?

Convert your annual overhead into a cost per billable hour, then build it into your rate. Divide total annual overhead by the billable field hours you realistically expect, add that to your burdened labor rate to find break-even, then divide by one minus your target margin. Pricing that skips this step covers labor and materials but not the business.

Why do my jobs look profitable but the company is not?

Almost always because overhead is missing from the job-level numbers. Gross margin measures revenue against direct job costs only. If rent, insurance, office wages, software and unassigned vehicles are never allocated, every job can show a healthy margin while the company as a whole loses money. Compare your total gross profit against your total overhead to see whether the gap is real.

Should I price by the hour or by the job?

Fixed pricing usually serves both parties better once you can estimate reliably, because the customer gets certainty and you keep the benefit of working efficiently. It only works if your job costing is good enough to know your true costs. Contractors without reliable cost data are often safer charging hourly until they have enough completed-job history to price with confidence.

Accounting Methods

What is the difference between cash and accrual accounting?

Cash accounting records income when money arrives and expenses when they are paid. Accrual accounting records them when they are earned and incurred, regardless of payment timing. Accrual gives a far more accurate picture for contractors because it matches a job's revenue to its costs, but cash accounting can be simpler and may affect tax timing. Which you may use depends on your business, so discuss it with your accountant.

What is percentage-of-completion and do I need it?

Percentage-of-completion recognizes a contract's revenue gradually as the work progresses, usually measured by costs incurred against total estimated costs. It is the standard approach under generally accepted accounting principles for longer-term contracts and is what lenders and bonding agents expect to see. Whether you are required to use it for tax purposes depends on contract length and business size, and those rules change.

What is a WIP schedule and why do lenders ask for one?

A work-in-progress schedule lists every open job with its contract value, estimated cost, costs incurred, percent complete, revenue earned and amounts billed. It reveals overbilling and underbilling that a profit and loss statement hides. Lenders and bonding agents ask for it because it shows whether reported profit is real and whether jobs are drifting.

What financial statements should a contractor be able to produce?

A profit and loss statement, a balance sheet, a statement of cash flows and, once jobs run across month ends, a work-in-progress schedule. Job-level profitability reporting sits alongside these. If you plan to seek a line of credit or bonding, those parties will expect all of them to be current and internally consistent.

Retainage & Change Orders

How should retainage be recorded in my books?

Track retainage receivable separately from ordinary accounts receivable, because it behaves differently: it is earned but not collectible until closeout conditions are met. Keeping it in the general receivables balance makes your aging report look worse than reality and makes it easy to forget to collect. A separate account with a named owner is what actually gets it paid.

What happens if I do extra work without a signed change order?

You may struggle to collect for it. Beyond the contractual risk, unbilled extras distort job costing, because the costs appear against a contract value that never grew. Price and document change orders before performing the work, and add the approved value to the job so profitability stays accurate.

How do I chase retainage that is overdue?

Start with a list. Maintain a retainage schedule showing each job, the amount held, the closeout conditions and the expected release date, and review it monthly with one person accountable. Most overdue retainage is not disputed, it is simply forgotten by both sides. Completing punch lists and closeout paperwork promptly removes the usual excuse for delay.

Payroll & Hiring

How do I know what an employee really costs?

Build a burdened rate: base wage plus employer payroll taxes, workers' compensation, general liability, benefits and paid time off. Then divide by the share of paid hours that are actually billable, because drive time, shop time and callbacks are real costs that no job pays for directly. The result is usually 40 to 70 percent above the wage.

Employee or subcontractor: how is that decided?

By the facts of the working relationship, not by preference or by what a contract says. Regulators look at the degree of control over how, when and where the work is done, the financial arrangement and the nature of the relationship. Misclassification exposes the business to back taxes and penalties, so review arrangements with a qualified professional whenever your crew structure changes.

How does construction payroll differ from ordinary payroll?

Hours generally need to be attributed to specific jobs so labor lands in job costing rather than in a single wage account. Overtime, per diem, multiple pay rates for different work, and prevailing-wage or certified payroll requirements on public projects add further complexity. Payroll systems that integrate with job tracking save a great deal of manual reconstruction.

Equipment & Capital

Should I buy, finance or rent equipment?

Start with utilization: how many billable hours the machine will genuinely work. Equipment used occasionally is usually cheaper to rent even at a high daily rate. If utilization is high, compare total cost of ownership including insurance, maintenance, fuel and storage against rental cost, then test whether the monthly payment survives your slowest month.

How should equipment purchases affect my tax planning?

Timing and structure can matter, but the decision should be driven by whether the business needs the asset and can carry the payment. Available treatments depend on the asset, how it is used and rules that change from year to year. Talk to a qualified professional before you buy rather than after, because the options narrow once the purchase is made.

Growth & Structure

What business structure is right for a contracting business?

It depends on liability exposure, how you take money out, payroll obligations, state requirements and your growth plans, and the right answer often changes as the business grows. Because the choice affects both taxes and legal exposure, it deserves a conversation with an accountant and, where liability is a factor, an attorney.

What do I need financially to qualify for bonding?

Surety companies generally look at working capital, net worth, the quality and consistency of your financial statements, your WIP schedule, and your track record of completing similar work. Requirements vary by surety and by the size of the bond. The practical preparation is the same in every case: current, accurate, accrual-based statements and a clean WIP schedule.

When should a contractor think about succession or selling?

Earlier than most owners do, because the financial preparation takes years rather than months. A buyer or successor is paying for a business that runs without you, which means documented systems, job costing that does not depend on your memory, clean multi-year financial statements and customer relationships held by the company. Those are the same things that make the business easier to run in the meantime.

These answers are general educational information, not advice for any particular business. Where an answer depends on your specific facts — and in tax, payroll and classification questions it usually does — confirm it with a qualified professional.

Terms

Construction Accounting Terms, in Plain Language

Twenty-three terms that come up in contractor financial conversations, with your accountant, your banker or your surety — defined without jargon.

Job costing
Assigning revenue and costs to individual jobs so you can see the profitability of each one rather than only of the business as a whole.
Burdened labor rate
The full hourly cost of an employee including payroll taxes, insurance, benefits and paid time off — always higher than the wage.
Direct costs
Costs traceable to a specific job, such as its materials, field labor and subcontractors.
Overhead
The cost of running the business regardless of any particular job — rent, insurance, office staff, software, vehicles not assigned to a job.
Gross margin
Revenue minus direct job costs, usually expressed as a percentage of revenue. What's left to cover overhead and profit.
Markup
A percentage added to cost to arrive at a price. Always a larger percentage than the margin it produces.
Change order
A documented agreement to alter the scope, price or schedule of a job after the original contract is signed.
Retainage
A portion of payment withheld by the customer until a project is complete, released after closeout conditions are met.
Work in progress (WIP)
Jobs that are started but not finished, and the schedule that tracks how much of each has been earned versus billed.
Overbilling and underbilling
Overbilling is invoicing ahead of work completed; underbilling is completing work you haven't yet invoiced. Underbilling quietly ties up cash.
Accounts receivable aging
A report grouping unpaid customer invoices by how long they've been outstanding.
Days sales outstanding
The average number of days between invoicing a customer and collecting payment.
Backlog
Work that is contracted but not yet performed — your forward view of revenue.
Working capital
Current assets minus current liabilities: the money available to run day-to-day operations.
Chart of accounts
The list of categories your bookkeeping uses. For contractors, it should separate direct job costs from overhead.
Percentage-of-completion
Recognizing a contract's revenue gradually as work progresses, usually measured by costs incurred against total estimated costs.
Completed contract method
Recognizing all of a contract's revenue and cost when the job finishes rather than as it progresses.
Cash vs. accrual accounting
Cash records income and expenses when money moves; accrual records them when earned and incurred. Accrual matches a job's revenue to its costs.
Estimate accuracy
How closely actual job costs land against estimated costs, tracked over time to show where bidding needs correcting.
Labor utilization
The share of paid field hours that are billable to a job. Small changes here move profitability sharply.
Bonding capacity
The total value of bonded work a surety will support, based on working capital, net worth and financial statement quality.
Certified payroll
Detailed payroll reporting required on many public projects, confirming that workers were paid the required wage rates.
Contract value
The agreed price of a job including all approved change orders — the figure job profitability is measured against.
About the firm

Why GJ Consulting Group Publishes This

GJ Consulting Group is an accounting and advisory firm serving small businesses across Hampton Roads. The firm provides bookkeeping and payroll, tax preparation, and fractional CFO services.

The people behind it are business owners turned financial professionals. They built, ran and successfully exited two service-based businesses before advising others, which is why this library is written the way it is — around the decisions an owner actually has to make, rather than around accounting theory.

This resource exists because contractors are consistently underserved by generic financial guidance. The material above is offered freely and without a form, on the view that useful help given openly is a better introduction than a sales pitch.

What working with GJ Consulting Group looks like

  • Bookkeeping built for job costing — a chart of accounts that separates direct costs from overhead, so job profitability comes out of the file rather than a spreadsheet.
  • Payroll that feeds the job — hours attributed to work, so labor lands where it belongs.
  • Tax preparation from current records — the return is a summary of a year that was already tracked, not a reconstruction of it.
  • Fractional CFO support — monthly reporting, interpretation and a standing conversation about what to do next, without a full-time hire.

Related Services

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GJ Consulting Group

Accounting & advisory · Hampton Roads, Virginia

GJ Consulting Group is led by business owners who became financial professionals. Before advising other companies, they built, ran and successfully sold two service-based businesses — which is why the guidance here is organized around the decisions an owner actually faces rather than around accounting theory.

The firm's stated aim is to give owners clarity, control and the confidence to make better decisions, and its own summary of the work is a fair description of this page too: run the numbers so you can run the business.

Intuit Certified QuickBooks Online Level 2 badge

Intuit Certified QuickBooks Online, Level 2. The QuickBooks guidance on this page reflects daily hands-on work in client files, not a reading of the manual.

Reviewed by GJ Consulting Group · Last reviewed · Next scheduled review February 2027. Figures, references and regulatory statements are re-checked at every review and immediately whenever an underlying rule changes.

How this guide is written

  • We teach what we discuss with clients every day. Nothing here is written for search engines first. These are the same explanations, checklists and worked examples used in real conversations with owners.
  • Educate first, and completely. Every resource is given in full, including the steps you can take entirely on your own. If you use all of it and never call us, it was still worth writing.
  • Specific where we can be, honest where we can't. Where an answer depends on your facts — and in tax, payroll and classification it usually does — we say what it depends on instead of guessing. We don't publish figures that change year to year without pointing you to the source.
  • Maintained on a schedule. This page has a named review date and a next review date. Stale financial guidance is worse than none.

Experience

20+ years of accounting and advisory experience, including building and exiting two service-based businesses.

Certification

QuickBooks Certified Professionals — Intuit Certified QuickBooks Online, Level 2.

Services

Bookkeeping and payroll, tax preparation, and fractional CFO support for owners who want financial guidance without a full-time hire.

Works with the tools you already use

QuickBooksXeroGusto SquareMelioToastInsperity
References

Where to Verify This Yourself

Financial and tax rules change, and figures that depend on your circumstances are deliberately absent from this page. These are the primary sources worth going to directly.

Links to government resources are provided for reference and do not imply any endorsement of GJ Consulting Group.

Have a Financial Question About Your Contracting Business?

If something above raised a question about your own numbers, GJ Consulting Group is happy to talk it through — what your books are telling you, where the gaps are, and what would be worth fixing first. No obligation, and no pressure to become a client.

Prefer to keep reading first? Everything on this page is free to use and will stay that way.

Please use the contact details on this site to reach GJ Consulting Group.

Published by GJ Consulting Group Last reviewed Next review February 2027

This page is general educational information for contracting and home-service business owners. It is not tax, legal, accounting or financial advice for any particular business, and it does not create a professional relationship. Tax and regulatory treatment depends on the facts and circumstances of your business and changes over time. Talk to a qualified professional about your specific situation before acting.