Cash vs Accrual Accounting for Contractors: Which Method Makes Sense for Your First Profitable Year?

Cash vs accrual accounting for contractors comes down to one question: when does a dollar count? Congress drew a bright line that answers it for almost every trade contractor reading this. A business whose average annual gross receipts for the prior three years don't exceed the threshold under IRC §448(c) can use the cash method without asking anyone's permission. That threshold is inflation-adjusted to $32,000,000 for tax years beginning in 2026, per Rev. Proc. 2025-32. Cross it and you must switch to accrual for the year you fail the test. The number rises with inflation, so the vast majority of plumbers, HVAC techs, roofers, and concrete crews sit comfortably on the cash side. If you're a single-member LLC finishing your first profitable year, the cash method isn't a loophole to justify — it's the default the law hands you.

Our office works with trade contractors across every entity type — sole proprietors, single-member LLCs, multi-member LLCs, and S-Corps — and the accounting-method conversation always starts in the same place. For a broader look at how this fits into your overall tax picture, see our contractor tax planning hub.

What is the cash method of accounting?

The cash method means income counts when the money arrives and expenses count when they're paid — bookkeeping that matches your bank account. You invoice a customer on December 15th, they pay you on January 10th, and that revenue lands on next year's tax return. You buy pipe fittings on a credit card in December and pay the card in January — the expense goes on next year's books. The IRS doesn't care when the work happened or when the bill arrived. They care when cash moved.

For a sole proprietor or single-member LLC, this is the method that makes your Schedule C line up naturally with what your bank statement says at year-end. No accrual adjustments, no work-in-progress calculations, no counting invoices you haven't collected as income you owe tax on today.

What is the accrual method of accounting?

The accrual method means income counts when you earn it and expenses count when you owe them, even if no money has moved yet. You finish a bathroom rough-in on December 28th and send the invoice that day — under accrual, that's this year's income even if the check doesn't arrive until February. You receive a materials bill on December 20th — that's this year's expense even if you don't pay it until January.

Accrual gives you a more accurate picture of profitability in any given period, because it matches revenue to the costs that produced it. But it also means you can owe tax on money you haven't collected yet. For a contractor with slow-paying general contractors or homeowners who drag out final payment, that's a real cash-flow problem.

Which accounting method can a contractor legally use in 2026?

If your average annual gross receipts for the prior three tax years are under $32,000,000 for 2026, you can use the cash method. The test is mechanical — you either clear it or you don't. It's the statutory test under IRC §448(c), and the $32,000,000 figure comes straight from Rev. Proc. 2025-32. A plumber doing $400,000 a year, an HVAC company at $2 million, even a concrete outfit at $10 million — all comfortably under the line.

Here's how the test works. You add up your gross receipts for each of the prior three tax years. You divide by three. If the average is $32,000,000 or less, you qualify. If you're in your first year of business, you automatically qualify because you have no prior years to average. A second-year business averages the one prior year. The test is annual — you check it every year.

The one exception to know about: long-term construction contracts. Under IRC §460, contracts that take longer than two years to complete generally must use percentage-of-completion accounting, which spreads income across the life of the project. But §460(e) carves out two exemptions that cover most residential trade contractors. Home construction contracts — building or renovating a dwelling with four or fewer units — are exempt entirely. And any other construction contract that you estimate at signing will finish within two years is exempt if you meet the §448(c) test. So a plumber doing a three-week bathroom remodel, an HVAC tech swapping a unit in two days, a roofer finishing a house in a week — none of them touch percentage-of-completion.

Cash vs accrual: which is better for a first-year contractor?

For a single-member LLC plumber or HVAC contractor in their first profitable year, the cash method is almost always the right choice. You have no prior-year gross receipts to average, so you automatically clear the §448(c) test. Your books match your bank account, which means less time spent on accounting and less risk of reporting errors. And critically, you don't pay tax on invoices you haven't collected.

In a trade where general contractors hold retention for 30 to 90 days, where homeowners argue over final invoices, and where material suppliers demand payment before the job closes, being taxed on earned-but-uncollected revenue can leave you paying tax on money you don't have. The cash method keeps your tax bill tied to money you actually have.

Does my entity type affect which method I can use?

No — the §448(c) test applies regardless of entity. A sole proprietor, a single-member LLC, a multi-member LLC taxed as a partnership, and an S-Corp all use the same $32,000,000 threshold. The entity determines where the income lands on your return, not which accounting method you're allowed to use.

For a sole proprietor or single-member LLC, the cash method flows directly onto Schedule C. For a multi-member LLC, the cash method flows through the partnership return and onto each owner's K-1. For an S-Corp, same idea: the method is chosen at the entity level, and the results flow through to the owners. The bookkeeping mechanics are identical; the reporting form is what changes.

If you're also thinking about entity structure, our writeup on LLC vs S-Corp for contractors walks through the tax-savings math, and our piece on when to make the S-Corp election covers the income trigger where it starts paying off.

Can I switch from cash to accrual (or vice versa) later?

Yes, but it's not something you can just start doing on a return. Switching between cash and accrual is a change in accounting method, and it generally requires IRS consent via Form 3115. The good news is that most voluntary method changes — including switching from accrual to cash when you qualify — are granted automatically under published revenue procedures, meaning you file the Form 3115 with your return rather than waiting for IRS approval. But you still have to file it, and there are timing rules about when the change takes effect.

If you start on cash and your business grows past the $32,000,000 threshold, you're required to switch to accrual — that's not optional. The switch happens in the year you fail the three-year average test, and it's done through Form 3115 as a required change, not a voluntary one. For the vast majority of trade contractors, this is a threshold they'll never approach.

How does the cash method help with year-end tax planning?

The cash method gives you two levers that accrual doesn't. You can push income into next year by waiting to send invoices in late December — if the check arrives in January, it's next year's income. And you can pull deductions into this year by paying for materials, supplies, or equipment before December 31st — if the payment clears this year, the deduction lands this year.

For a contractor who's had a strong year and wants to reduce taxable income, this is where the cash method gives you real leverage. Under the cash method, stocking up on fittings, paying suppliers early, prepaying insurance, or buying that truck in December instead of January reduces this year's tax. Under accrual, prepaying supplies doesn't help because the expense is recognized when the supplies are used, not when they're paid for.

Those year-end moves only work if you have the cash sitting in a separate account when December arrives. Our standing advice to trade contractors: sweep a quarter to a third of every net dollar into a separate tax account the day you take the draw. In a no-income-tax state, 25% covers it. In California, use 30%. The cash method is what makes that account work — you control when income hits the return, so you control when the tax comes due. For the full breakdown, see our guide on how much to set aside for taxes.

What about long-term contracts and percentage-of-completion?

If you take on projects that last more than two years — a commercial build-out, a major renovation, a ground-up construction project — IRC §460 requires percentage-of-completion accounting for that specific contract. This isn't about your overall accounting method; it's a contract-level rule that overlays whatever method you use for the rest of your business. You report income as you complete the work, based on costs incurred relative to total estimated costs.

But §460(e) exempts two categories that cover most trade contractors. First, home construction contracts — contracts where more than 20% of the work is on a dwelling with four or fewer units — are fully exempt from percentage-of-completion, regardless of duration. Second, any other construction contract that you estimate at signing will be completed within two years is exempt if you meet the §448(c) gross-receipts test. A plumber, HVAC contractor, roofer, or drywaller doing residential work almost always falls into one of these exemptions. The percentage-of-completion rule mainly hits large commercial general contractors — not the trade subcontractor reading this.

Does using the cash method increase my audit risk?

No. The cash method is the default for small businesses under the §448(c) threshold, and using it when you qualify is not a flag. What creates problems is inconsistency — switching methods without filing Form 3115, or reporting on cash one year and accrual the next without explaining why. If you're under the threshold and you use cash consistently, you're doing exactly what the tax code expects.

If you want to understand what actually does trigger scrutiny for contractors, our post on contractor tax audit triggers covers the five most common issues and how to fix them before they become problems.

What records do I need to keep on the cash method?

The cash method is simpler, but it's not record-keeping-free. You still need to track every invoice, every receipt, every payment, and every bank transaction. The difference is that your books end where your bank statement ends — reconciliation is straightforward because there are no accrual adjustments to reconcile.

At minimum, keep these for each tax year:

• Every invoice sent to customers, with date paid
• Every receipt for materials, supplies, and subcontractors
• Bank and credit card statements for all business accounts
• 1099-NEC forms for any contractors you paid
• Mileage logs or vehicle records if you're claiming vehicle expenses
• Any year-end adjusting entries (depreciation and Section 179)

The cash method doesn't eliminate the need for good bookkeeping — it just means the bookkeeping maps directly to cash flow rather than to earned-and-owed. For more on getting your financial house in order, our guide on managing the financial side of your business walks through the fundamentals.

What's the short version?

If your average gross receipts for the prior three years are under $32,000,000 for 2026 — and for a first-year contractor, they're zero — use the cash method. It matches your bank account, it doesn't tax you on uncollected invoices, and it gives you year-end planning levers that accrual doesn't. The law hands it to you by default. You don't need permission, you don't need to justify it, and it works the same whether you're a sole proprietor, a single-member LLC, a partnership, or an S-Corp.

Switch to accrual only if you grow past the threshold or if you take on contracts lasting more than two years that aren't home construction. And if you ever need to switch, file Form 3115 — don't just change methods on your own.

What should I do next?

If you're a trade contractor setting up your books for the first time, start on the cash method. It's the right call for almost every plumber, HVAC tech, roofer, concrete pourer, and landscaper reading this. Get a solid bookkeeping system in place — QuickBooks, a spreadsheet, whatever you'll actually use — and reconcile it to your bank statement every month. Track every invoice, every receipt, every 1099. If your business grows to the point where you need to revisit your method or your entity structure, we can help you run the numbers at that stage.

If you want a second set of eyes on your accounting method, your entity choice, or your overall tax strategy, book a meeting with our office. We work with trade contractors across every entity type and every trade, and we'll tell you straight whether what you're doing makes sense or needs adjusting.