CPA Services for Construction and Contractors

A construction accountant works in a world that a general small-business accountant rarely visits, and the difference shows up in almost every part of the books. The core reason is that construction income does not arrive in tidy monthly chunks tied to when work is performed. A single contract can run eighteen months, cross two or three tax years, involve progress billings that lag the actual work, and end with a chunk of money held back as retainage. A regular accountant who records revenue when the invoice is paid will produce numbers that are not just imprecise but actively misleading for a contractor.

The first thing a construction accountant does differently is job costing. Instead of one company-wide profit-and-loss, we track cost and revenue at the level of each individual job, so labor, materials, subcontractor payments, and equipment are all coded to the specific contract they belong to. This is the only way to know which projects are making money and which are quietly losing it. The second is the work-in-progress schedule, a report that compares costs incurred and amounts billed against the total contract value to reveal whether each job is overbilled or underbilled. The third is the tax accounting method, because long-term contracts fall under Section 460 and its percentage-of-completion rules rather than the simple cash or accrual approach most small businesses use.

Here is a worked example of why this matters. Suppose a contractor has a 1,000,000 dollar contract and by year-end has incurred 600,000 dollars of the estimated 800,000 dollars in total cost. That job is 75 percent complete by cost, so under percentage-of-completion the contractor recognizes 750,000 dollars of revenue and 600,000 dollars of cost this year, for 150,000 dollars of gross profit, even though the customer has only been billed 500,000 dollars so far. A regular accountant booking only the 500,000 dollars billed would understate income by 250,000 dollars and hand the contractor a tax return that does not match reality or the method the law requires. A construction accountant produces the correct figure and keeps the underbilling visible.

Beyond the numbers, a construction accountant understands the surrounding world: prevailing-wage and certified payroll, subcontractor 1099 reporting and worker classification, retainage tracking, and the bonding relationship that depends on financial statements a surety will accept. We coordinate all of this through our bookkeeping service so the job cost, the WIP schedule, and the tax return are built from the same reliable data. The IRS Small Business and Self-Employed Tax Center lays out the general filing duties, and Section 460 governs the long-term contract rules, but neither tells a contractor how to run the books so that the tax method, the bank, and the bonding company all see the same trustworthy picture. That is the working job of a construction accountant, and it is why hiring one who already knows the field saves a contractor from the expensive rework a generalist leaves behind. A contractor who forces construction into off-the-shelf small-business accounting usually discovers the mismatch at the worst moment, when a bonding renewal or a bank covenant review lands and the financial statements will not support it, and by then the fix is a costly restatement rather than a running process that was right all along.

Choosing a revenue recognition method is one of the most consequential decisions a construction accountant makes, and it is governed by law rather than left to taste. The starting point is Section 460, which requires most long-term contracts, defined as construction contracts not completed within the tax year they begin, to use the percentage-of-completion method. Under that method, income is recognized as the job progresses, measured by the costs incurred to date against the total estimated cost of the contract. The completed-contract method, which defers all revenue and profit until the job is finished, is available only in specific situations rather than as a free choice.

The main exception is the small-contractor exemption. A contractor whose average annual gross receipts for the three prior tax years fall at or below the threshold, which the 2025 law raised to 45 million dollars for contracts entered into in tax years beginning after 2025, may use completed-contract for contracts expected to finish within two years. Home construction contracts get their own carve-out and can use completed-contract regardless of size. So the first job of a construction accountant is not to pick a favorite but to determine which methods the contractor is even eligible to use, based on receipts and the type of work.

Once eligibility is clear, the choice becomes a planning decision with real tax consequences. Consider a contractor eligible for both methods who has a large job that starts in November and finishes the following August. Under percentage-of-completion, if the job is 20 percent complete by December 31, the contractor recognizes 20 percent of the profit in the first year. Say the job carries 400,000 dollars of total profit: percentage-of-completion pulls 80,000 dollars into year one, taxable now. Completed-contract defers the entire 400,000 dollars into year two, when the job finishes. If the contractor expects a lower tax bracket next year, or simply wants to defer the cash outflow, completed-contract saves real money on the timing. If the contractor is chasing bonding capacity and wants to show steady profit each year, percentage-of-completion presents a smoother, stronger financial picture to the surety.

There is a catch worth flagging: even a contractor using completed-contract for the regular tax often has to use percentage-of-completion for the alternative minimum tax on many contracts, which can erase part of the deferral benefit. A construction accountant runs both scenarios, including the AMT effect, before committing. We do this modeling through tax strategy consulting, looking at the contractor’s receipts history, the mix and length of current contracts, the expected tax brackets across years, and the bonding relationship, then choosing the method that produces the best after-tax and financial-statement outcome. The IRS instructions for long-term contracts spell out the mechanics, and the wrong choice can lock a contractor into a method that costs money for years, since changing an accounting method later requires IRS consent and its own paperwork on Form 3115. Because the exemption is tested every year against a rolling three-year receipts average, a growing contractor can pass the threshold and lose access to completed-contract mid-stride, so we monitor receipts annually and warn a contractor before the method it has relied on is no longer available to it.

Ask any experienced construction accountant what separates a contractor who thrives from one who fails, and the answer is almost always the quality of the job costing and the discipline of the work-in-progress schedule. These are not back-office niceties. They are the instruments that tell a contractor whether the business is actually making money, and they are the numbers the bank and the bonding company scrutinize hardest.

Job costing means assigning every direct cost to the specific contract that generated it. Labor hours, material invoices, subcontractor payments, equipment time, and permit fees each get coded to their job. Without this, a contractor sees one blended company profit and has no idea that the office renovation lost 40,000 dollars while the warehouse job carried the quarter. With it, the contractor can catch a job going sideways while there is still time to change how it is run, and can bid the next similar project using real historical cost rather than a hopeful guess.

The work-in-progress schedule is where job costing turns into insight. For each open contract, the WIP schedule lists the total contract value, the costs incurred to date, the estimated total cost, the percent complete, the revenue that should be recognized, and the amount actually billed. The gap between earned revenue and billings is the heart of it. When billings exceed earned revenue, the job is overbilled, meaning the contractor has collected cash ahead of the work and owes that value in future performance. When earned revenue exceeds billings, the job is underbilled, meaning the contractor has done work it has not yet been paid for and is effectively lending the customer money.

A worked example makes the risk concrete. Imagine a contractor with a 2,000,000 dollar contract, 900,000 dollars of cost incurred against a 1,500,000 dollar total estimate, so the job is 60 percent complete and has earned 1,200,000 dollars of revenue. If the contractor has billed 1,400,000 dollars, the job is overbilled by 200,000 dollars. That 200,000 dollars looks like cash in the bank, but it is really a liability: the contractor must still perform 600,000 dollars of work against only 600,000 dollars of remaining billings, with no cushion. A contractor who reads that overbilling as profit and spends it will run short of cash to finish the job, which is one of the most common ways construction companies collapse mid-project.

Retainage compounds the picture, because the 5 to 10 percent an owner withholds until completion sits inside these figures and is not collectible yet. A construction accountant tracks retainage receivable separately so it never gets mistaken for available cash. We keep all of this current through monthly financial reporting so the contractor, the banker, and the surety are always looking at an honest schedule. The IRS recordkeeping guidance sets the baseline for keeping books that support the return, and a disciplined WIP schedule is how a contractor meets that standard while also running a business that does not surprise itself. We also watch the trend across periods, because a job that swings from underbilled to badly overbilled in a single quarter is often a warning that billings have outrun production, and catching that early lets a contractor correct the billing schedule before the cash gap becomes the reason the job stalls.

Subcontractor reporting is a place where a construction accountant earns their keep, because contractors pay more subcontractors than almost any other type of business and the rules carry real penalties when they are handled loosely. The headline change for 2026 is the reporting threshold. For payments made during 2026, the floor for issuing a Form 1099-NEC rose from 600 dollars to 2,000 dollars. In practice this means a contractor files a 1099-NEC for any subcontractor paid 2,000 dollars or more across the year, which on a real construction project is nearly every sub. The change reduces paperwork for tiny one-off payments but does nothing to relieve the duty to report the income itself, and it does not touch the far larger issue of worker classification.

The single most important habit a construction accountant enforces is collecting a signed Form W-9 from every subcontractor before the first payment goes out. The W-9 captures the sub’s legal name, tax identification number, and entity type, which is exactly what you need to issue a correct 1099 in January. Trying to collect a tax ID after a job has closed and the sub has moved on is a recurring nightmare, and a missing or wrong number can trigger backup withholding obligations and penalties. We build the W-9 collection into the onboarding of every sub so year-end reporting is a clerical task rather than a scramble.

Worker classification is the deeper risk. If a contractor treats a worker as a 1099 subcontractor when the facts say that person is really a W-2 employee, the exposure includes back payroll taxes, the employer share of Social Security and Medicare, and penalties. Construction is a field that both the IRS and state labor departments watch closely, precisely because misclassification is common. A construction accountant evaluates the relationship, control over the work, provision of tools, whether the worker serves other customers, against the classification rules rather than defaulting to whatever is convenient.

A worked example shows the stakes. Suppose a contractor pays a framing crew leader 60,000 dollars over the year and treats him as a 1099 subcontractor, but the facts show the contractor set his hours, supplied his tools, and gave him no ability to work for anyone else. If reclassified as an employee, the contractor could owe the employer share of payroll tax, roughly 7.65 percent of 60,000 dollars, about 4,590 dollars, plus potential penalties and the tax that should have been withheld, and that is for one worker. Multiply across a crew and the exposure grows quickly. We run this analysis and the reporting through payroll compliance so a contractor stays on the right side of both the 1099 rules and the classification rules, and so a routine audit does not turn into a five-figure assessment for treating employees as subs. We also keep the certified-payroll and prevailing-wage records aligned with the 1099 file on public work, because a contractor on a government job is reporting to more than one agency at once, and inconsistent worker records across those filings are exactly what draws a closer look from a labor auditor.

Equipment and the look-back method are two areas where a construction accountant delivers concrete dollars, one by accelerating deductions and the other by keeping the contractor compliant on completed long-term contracts. Start with equipment, because construction is capital-heavy and the 2026 rules are favorable. One hundred percent bonus depreciation is permanent again for qualifying property placed in service after early 2025 under Section 168(k), which means a contractor can write off the full cost of an excavator, a dump truck, or a compressor in the year it is put to work rather than spreading the deduction across many years. Running in parallel is Section 179 expensing, with a 2026 limit of 2.5 million dollars and a phaseout that begins around 4.09 million dollars of total purchases, a ceiling most contractors will never approach.

The planning value comes from timing. A worked example: a contractor buys a 200,000 dollar piece of heavy equipment and places it in service before December 31. With 100 percent bonus depreciation, the entire 200,000 dollars is deductible this year. At a combined marginal tax rate of 32 percent, that deduction is worth roughly 64,000 dollars in tax savings in the year of purchase. If the contractor instead waits until January, that 64,000 dollars of benefit slides a full year down the road. A construction accountant weighs this against the contractor’s income for the year, because a deduction is worth the most in a high-income year and can be partly wasted in a low one. We coordinate this through tax strategy consulting and the mechanics live in our 2026 Section 179 and bonus depreciation guide.

The look-back method is the other piece, and it is one contractors routinely forget. When a long-term contract accounted for under percentage-of-completion finally closes, the original cost estimates almost never match the actual results. Because income was recognized along the way based on those estimates, the contractor either reported too much or too little income in the earlier years. The look-back method reconciles the difference by recomputing the income that should have been reported using the actual final numbers, then calculating interest owed to or from the IRS on the tax that was over- or underpaid because the estimates were off. This is a real obligation on completed long-term contracts, reported on Form 8697, not an optional courtesy.

Here is how the look-back plays out in practice. Suppose a contractor recognized profit across two years on a job assuming 800,000 dollars of total cost, but the job actually cost 700,000 dollars, meaning the contractor was more profitable and should have recognized more income earlier than it did. The look-back recomputes each year with the true 700,000 dollar cost, determines that some tax was effectively paid late, and computes interest on that timing difference. The amounts are often modest, but the filing is mandatory and skipping it is a compliance gap. A construction accountant tracks which contracts trigger the look-back, runs the calculation, and files the form so the contractor closes out each long-term job cleanly. The Form 8697 instructions lay out the computation in full.