Bookkeeping for Construction and Contractors in Austin

Construction bookkeeping for an Austin contractor works in a world a general small-business bookkeeper rarely visits, and in a boom market where a contractor may run five or six jobs at once, the difference between construction-grade books and generic ones shows up fast. 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 slice of money held back as retainage. A bookkeeper who records revenue when the invoice is paid produces numbers that are not just imprecise but actively misleading for a contractor, even though Texas has no state income tax, because the federal return, the franchise tax margin for a larger firm, and the bonding package all depend on the right figures.

The first thing construction bookkeeping 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 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, and in a boom it is the only way to keep several simultaneous jobs from blurring into one number that hides the loser. The second is the work-in-progress schedule, which compares costs incurred and amounts billed against the total contract value to reveal whether each job is overbilled or underbilled. The third is tracking retainage separately, because money held back until acceptance is earned but not collected, and treating it as ordinary receivable misstates the cash position.

Here is a worked example of why it matters. Suppose an Austin 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 this year, even though the owner has been billed only 500,000 dollars so far. A bookkeeper booking the 500,000 dollars billed would understate income by 250,000 dollars and hand the contractor a federal return that does not match the method the law requires. Texas takes no income tax on top, but the misstatement still distorts the federal return and can throw off the franchise-tax margin for a contractor over the threshold.

Beyond the numbers, construction bookkeeping here has to understand the surrounding world, Texas sales and use tax on materials and the lump-sum versus separated contract distinction, the franchise tax and its cost-of-goods deduction, retainage and prompt-payment rules, and the bonding relationship that depends on financial statements a surety will accept. We coordinate all of it through our corporate returns service so the job cost, the WIP schedule, and the tax return draw from the same reliable data. The Section 460 rules set the federal framework, but the working job is running the books so the tax method, the bank, and the bonding company all see the same trustworthy picture, which is what saves an Austin contractor from the expensive restatement a generalist leaves behind when a bonding renewal lands mid-boom.

A work-in-progress schedule is the single most important construction-specific report in an Austin contractor’s books, and it is what turns raw job cost into a picture of where each job actually stands, which matters as much for the bank and the bonding company as it does for the tax return. The WIP schedule takes every open job and lines up four numbers, the total contract value, the total estimated cost, the costs incurred to date, and the amounts billed to date. From those it computes the percentage complete by cost, the revenue earned, and, critically, whether the job is overbilled or underbilled. That overbilled or underbilled figure is the heart of the schedule, because it reveals whether your cash position is telling the truth or hiding a future obligation you have already spent against.

An overbilled job is one where you have billed the owner more than the work completed justifies, so you are holding cash you have not yet earned and still have to perform against. That cash can look like profit in the bank, and in a boom a busy contractor can easily spend it on the next job, then run short when the earlier job’s remaining work has to be done with little billing left. An underbilled job is the reverse, where you have done more work than you have billed, so you are effectively financing the owner out of your own working capital. Both conditions are invisible in a simple cash-basis set of books, and both are exactly what a WIP schedule surfaces so you can act on them before they turn into a cash crisis.

Here is a worked example. Suppose a 2,000,000 dollar job in East Austin has a 1,500,000 dollar estimated cost and has incurred 900,000 dollars, so it is 60 percent complete and has earned 1,200,000 dollars of revenue. If you have billed 1,400,000 dollars, the job is overbilled by 200,000 dollars. That 200,000 dollars is cash in your account that belongs to work you still have to do, with only 600,000 dollars of billings remaining on the contract. Reading that 200,000 dollars as profit and committing it elsewhere is how a contractor in a boom ends up unable to finish the job it already collected on. The WIP schedule makes the overbilling visible so it can be managed rather than discovered too late.

The WIP schedule is also what your surety and your lender want to see, because it shows your true earned position across all jobs and your remaining backlog, which is the basis for a bonding decision. Because Texas has no state income tax return to reconcile against, the WIP schedule carries even more weight as the primary honest picture of the business, since there is no state filing forcing a second look. We build and maintain the WIP schedule from current job cost and fold it into monthly financial reporting, so the statements you hand a surety or a bank in the middle of a boom reflect reality rather than a cash balance that flatters an overbilled book. The schedule is the difference between knowing where you stand and guessing, and in a fast-moving Austin market that difference decides which jobs you can safely take on next.

Retainage is money the owner holds back from each progress payment until the job is accepted, and tracking it correctly in an Austin contractor’s books is what keeps the cash position honest, because retainage is revenue you have earned but have not yet collected, and treating it as ordinary receivable or ignoring it distorts the whole picture. On Texas construction jobs, the owner commonly holds back 5 or 10 percent of each payment, and Texas law governs retainage and prompt payment, so the amounts and the timing are not arbitrary. The books have to record retainage receivable, the money owners are holding back from you, as its own line separate from ordinary accounts receivable, and retainage payable, the money you are holding back from your subcontractors, as its own line separate from ordinary payables.

The reason the separation matters is that retainage behaves differently from a normal receivable. A normal receivable is expected to be paid on ordinary terms, thirty days or so, while retainage may sit unpaid for months until the job is complete and accepted, sometimes long after the work is done. If your books lump retainage in with current receivables, your working capital looks stronger than it is, because a chunk of that receivable is locked up until final acceptance. For a contractor trying to manage cash through a boom, that misread can lead to committing money that is not actually available. Tracking retainage separately shows you exactly how much of your earned revenue is tied up and when it should release.

Here is a worked example. Suppose you have a 2,000,000 dollar job with 10 percent retainage. As the job progresses and you bill it out, the owner holds back 200,000 dollars in total, released only on acceptance. That 200,000 dollars is revenue you have earned and reported, but it is not cash you can spend, and it may not arrive for months after the job is finished and signed off. If your books show it as a current receivable alongside your thirty-day billings, you would overstate your available working capital by 200,000 dollars. Tracked as retainage receivable, it is clearly flagged as held-back money with its own expected release, so you plan around it rather than being surprised when the payment does not show up on ordinary terms.

Retainage also affects your subcontractors in the mirror image, because you typically hold back the same percentage from them, and that retainage payable is cash you are keeping until you release it. We set up the books to track retainage receivable and payable as distinct lines, tie them to each job, and reflect them correctly in the WIP schedule and the statements through monthly financial reporting. Because Texas has prompt-payment rules governing when retainage must be released, keeping it tracked also helps you enforce your right to collect it on time rather than letting an owner sit on it indefinitely. The result is a set of books where the cash position is real, the held-back money is visible, and neither you nor a surety reading your statements is misled about the working capital actually available to finish the work in front of you.

Sales and use tax on materials is one of the areas Austin construction contractors get wrong most often in the books, because Texas ties the tax treatment to how the contract is written, and the bookkeeping entry is completely different depending on whether the job is a lump-sum or a separated contract. Texas charges 6.25 percent state sales tax, and local jurisdictions in and around Austin add their own rates, pushing the combined rate to around 8.25 percent. The complication is not the rate, it is whether you, the contractor, owe the tax on the materials or whether you collect it from the customer, and that turns entirely on the contract structure, which the books have to know for every job.

Under a lump-sum contract, you charge the customer one bundled price for the whole improvement without separately stating materials and labor. Texas generally treats you as the consumer of the materials in that case, so you owe sales or use tax on what you pay for the materials. If your supplier charged you sales tax at purchase, the books record it as part of the material cost and you are done. If the supplier did not charge tax, you have to accrue use tax on the books and remit it to the state yourself, and forgetting that accrual is a common and expensive audit finding. Under a separated contract, you state materials and labor separately, are treated as a retailer of the materials, buy them tax-free for resale, and collect sales tax from the customer on the materials portion, which the books record as a tax collected and payable to the state.

Here is a worked example. Suppose a job uses 100,000 dollars of materials at an 8.25 percent combined Austin rate. Under a lump-sum contract, you owe about 8,250 dollars of tax on those materials. If the supplier charged it, it is in your cost. If not, the books must accrue 8,250 dollars of use tax and remit it. Under a separated contract, you buy the 100,000 dollars of materials tax-free and collect the 8,250 dollars from the customer on the materials line, then remit that collected tax. The dollars are similar but the bookkeeping and the cash flow run in opposite directions, and if the contract says one thing while the books do the other, a Texas audit will find the mismatch and assess the difference plus penalty and interest.

There are further wrinkles for new construction versus remodeling of nonresidential property, where labor itself can become taxable on a separated commercial remodel, so the type of work matters alongside the contract form. We build the correct sales-and-use-tax handling into the books for each job, accruing use tax where materials were bought untaxed on a lump-sum contract and recording collected tax on separated contracts, coordinated through tax compliance. The Texas Comptroller sales and use tax guidance lays out the lump-sum and separated rules. Getting this right in the books as the year goes is far cheaper than reconstructing it when an auditor asks how you handled the tax on every job you ran.

An Austin construction contractor’s ability to get bonded and to borrow depends directly on the quality of the bookkeeping, because both a surety and a lender make their decision by reading your financial statements, and in a boom market where bonding capacity decides which jobs you can even bid, clean construction books are not a nicety but a competitive requirement. A surety issuing a performance or payment bond is essentially guaranteeing that you will finish the work, and it underwrites that guarantee by examining your financial condition, your job costing, and your work-in-progress schedule. If your books record revenue only when cash comes in, rather than as each job progresses, the statements will not give the surety the earned-position and backlog picture it needs, and your bonding capacity suffers as a result.

The work-in-progress schedule is the centerpiece of what a surety reads, because it shows the earned revenue across all your open jobs, the costs incurred, the billings, and the remaining backlog. A surety uses that to judge whether you are taking on more work than your working capital and track record can support. If the WIP schedule is missing or unreliable, the surety is underwriting blind and will either decline or sharply limit your capacity. The same logic applies to a construction lender or a bank extending a line of credit, which wants to see that your reported profit is real and that your receivables, including retainage, are properly classified rather than overstated. A banker who spots a retainage balance buried in current receivables will discount your whole statement.

Here is a concrete way it goes wrong. Suppose your books lump 200,000 dollars of retainage receivable in with current receivables and treat a 200,000 dollar overbilling as ordinary revenue. Your statements would show stronger working capital and higher current profit than the reality, and a surety that later discovers the true position, or a lender that does, loses confidence in every number you present. In a boom, when you most need capacity to chase the available work, that loss of confidence is exactly when it hurts most, because the surety pulls back precisely as you are trying to expand. Accurate books that track retainage separately and carry a real WIP schedule present a picture the surety and lender can trust.

Because Texas has no state income tax return, your books answer mainly to the federal return and to these outside readers, which puts even more weight on getting the job cost, the WIP, and the retainage right, since there is no state filing forcing an independent check on the numbers. We keep the books to a standard a surety and a lender will accept, reconcile the accounts monthly, track retainage correctly, and keep the WIP schedule current, folding it all into monthly financial reporting. The IRS recordkeeping guidance sets the baseline for what records a business must keep, but a contractor needs more than the baseline, because the bonding and lending relationships that determine your capacity in an Austin boom rest on statements that only construction-grade bookkeeping can produce.