Tax Accounting Methods for Construction Companies

Construction tax planning usually focuses on familiar strategies such as equipment purchases, depreciation, retirement plans, and entity structure. Those areas matter, but there’s another opportunity contractors sometimes overlook: the accounting methods they use for tax purposes.

The way a construction company recognizes revenue and expenses can significantly affect taxable income from one year to the next. A business may have followed the same methods for years, and taking the time to review those methods can uncover opportunities to defer taxable income, accelerate deductions, and keep more cash in the business today.

What is a Tax Accounting Method?

A tax accounting method determines when a company recognizes income and expenses for tax purposes. At a high level, contractors generally use an overall accounting method, such as cash or accrual. Long-term construction contracts may also have their own accounting method under Section 460 of the Internal Revenue Code.

Two common methods for long-term contracts are percentage of completion and completed contract. Under percentage of completion, income is recognized as work progresses. Under the completed-contract method, income and expenses aren’t recognized until the contract is completed.

Retainage can create another opportunity. Construction companies commonly bill for work while a portion of the payment, often 10%, is held back until certain contract requirements are met. Depending on the circumstances, that retainage may not need to be included in taxable income immediately.

Why Book Income and Taxable Income Don't Have to Match

One reason accounting method reviews can create opportunities is that the tax rules don’t always treat construction contracts the same way generally accepted accounting principles (GAAP) do.

For example, both GAAP and tax accounting may use a percentage-of-completion calculation, but the rules for determining costs included in that calculation can differ. That means the percentage complete reported for financial statement purposes doesn’t necessarily need to equal the percentage used for tax purposes.

That difference can give contractors an opportunity to recognize less taxable income in the current year while still presenting financial statements that accurately reflect the company’s performance for banks, sureties, and other stakeholders.

This distinction is especially valuable in a strong year. If a contractor is generating higher taxable income, deferring a portion of that income may allow the company to keep cash longer rather than paying the tax immediately.

Why These Opportunities Get Missed

Construction accounting is already complicated. Maintaining an accurate WIP schedule and financial statements can take significant time and expertise. Adding a separate tax-based analysis may simply fall down the priority list.

There’s also specialized knowledge involved. Section 460 and the related construction accounting rules aren’t areas every company or accounting firm works with regularly. As a result, it can be easier to simply follow the GAAP treatment for tax purposes, even when another tax method may produce a better result.

A construction-focused tax advisor can maintain a separate tax-based WIP analysis without requiring the company to keep an entirely separate accounting system internally.

What Does an Accounting Method Review Look Like?

The review starts with the company’s contracts.

First, the advisor determines which contracts are actually subject to long-term contract accounting rules. Contracts that don’t qualify may not need to follow percentage-of-completion treatment for tax purposes.

From there, the advisor evaluates which accounting method is appropriate for each type of contract and how the company’s billing, costs, project structure, and operations affect the calculation.

That contract-by-contract analysis matters because one company may perform several very different types of work. For example, a contractor could have multifamily projects alongside retail projects, and those projects may qualify for different tax treatments.

Recent tax law changes have also expanded the circumstances in which certain residential construction contracts may qualify for completed-contract treatment, making a fresh review particularly worthwhile for contractors working on multifamily and other residential projects.

Other areas worth reviewing can include retainage, prepaid expenses, accrued expenses, capitalization policies, fixed assets, depreciation, and other income and expense recognition practices.

When Should You Review Your Accounting Methods?

There isn’t one schedule that works for every contractor, but certain situations should prompt a closer look.

A particularly strong year is one. Significant growth, changes in the types of projects you take on, acquisitions, tax law changes, or several years without reviewing your methods can also be good reasons to revisit them.

It also helps to start the conversation before year-end. Identifying opportunities early gives your tax advisor more time to evaluate eligibility, estimate the cash flow impact, understand when deferred income could reverse, and complete any required filings.

Make Accounting Methods Part of the Bigger Tax Picture

For construction companies, good tax planning has to work alongside the rest of the business. You still need financial statements that support banking relationships, bonding capacity, and other business needs.

Tax accounting methods can sometimes help accomplish both goals: maintain strong financial reporting while using the tax rules available to manage the timing of taxable income and retain more cash in the business.

If your company has grown, changed its project mix, or simply hasn’t reviewed its tax accounting methods in several years, it may be worth asking whether the methods you’ve always used are still the best fit.