True-up accounting is the adjustment a company makes when a figure it recorded as an estimate is replaced by the actual, verified amount. If the estimate was too low, the books get an additional expense or liability. If it was too high, the excess gets reversed. The point is to make the financial statements reflect what actually happened rather than what someone predicted months earlier, and the mechanics are the same whether you’re reconciling an insurance premium, a commercial rent bill, or the purchase price of an acquired company.
What Separates a True-Up From a Regular Adjusting Entry
Accrual accounting requires companies to record expenses in the same period as the revenue they help produce. That’s the matching principle, and it runs into a practical problem: many costs aren’t finalized until well after the period closes. Insurance premiums depend on payroll that hasn’t been audited. Inventory costs shift with material prices and production volumes. Shared service allocations change once subsidiaries close their books. Rather than wait for perfect data, companies book a reasonable estimate and correct it later.
What makes an adjustment a true-up, rather than just another period-end entry, is that it’s triggered by external verification or by final data arriving from outside the company’s own accounting system. Depreciation runs on an internal schedule and doesn’t need one. A workers’ compensation premium, on the other hand, gets recalculated by the insurer based on audited payroll, and the company adjusts its books to match. The external data point is the trigger.
How a True-Up Gets Recorded
Compare the Estimate to the Actual
Start by placing the accrued figure next to the final verified amount. Say a company accrued $100,000 in workers’ compensation expense throughout the year, and the insurer’s audit produces a final premium of $105,000. The variance is $5,000, and it’s an under-accrual. The company spent more than it recorded, so the books need to catch up.
Book the Journal Entry
Direction determines the entry. For an under-accrual like the $5,000 shortfall above, the entry debits the expense account (increasing recognized cost) and credits a liability account (acknowledging the additional amount owed). An over-accrual reverses: debit the liability to reduce it, credit the expense to lower recognized cost. That credit to expense flows through to net income, which is why sizable reversals get scrutinized.
Timing
Most material true-ups land at quarter-end or year-end, when companies reconcile their books for financial reporting. The annual close is the biggest wave, because that’s when insurers finalize audits, physical inventory counts happen, and tax preparers calculate the actual liability. A true-up performed in January is typically backdated and recorded as a December 31 transaction so it hits the correct reporting period. Some, like standard cost variances in manufacturing, happen monthly. Others, like a post-closing purchase price adjustment on an acquisition, may not occur for months after the triggering event.
Where True-Ups Show Up in Practice
Workers’ Compensation Premiums
Workers’ comp is priced on estimated payroll at the start of the policy period. The insurer doesn’t know actual payroll until the policy year ends and an audit is conducted. During that audit, the insurer verifies wages paid, checks job classifications, and recalculates the premium. If actual payroll ran higher, the insurer bills for the difference. If it came in lower, the company gets a refund or credit. Either way, a true-up aligns the expense on the books with the final premium.
401(k) Employer Match
This one catches people off guard. Many employers calculate their 401(k) match each pay period but define the match formula on an annual basis in the plan document. That mismatch hurts employees who front-load their contributions. An employee who maxes out the annual deferral limit early in the year stops contributing partway through, so the per-paycheck match stops too. Without a true-up, the employee loses part of the annual match they’d otherwise be entitled to.1Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026, IRA Limit Increases to $7,500
The 401(k) true-up fixes that. At year-end, the employer recalculates the total match as if it had been based on annual compensation and total deferrals, and contributes the shortfall. On the books, the company debits employer contribution expense and credits the accrued liability owed to the plan.
Inventory and Standard Costing
Manufacturers and retailers that use standard costing assign a predetermined cost per unit to inventory. Reality never cooperates perfectly. Raw material prices fluctuate, overtime hours spike, and overhead allocation rates shift with volume. Throughout the period, the gap between standard and actual costs accumulates in variance accounts. At period-end, those accounts get closed to cost of goods sold, bringing COGS in line with what production actually cost. Unfavorable variances increase COGS; favorable ones reduce it.
A separate true-up happens after a physical inventory count. Perpetual records rarely match what’s on the shelves once shrinkage, miscounts, and damaged goods are factored in. The physical count is the verified data point, and the books adjust to match. Any write-down hits COGS directly and reduces gross margin for the period.
Revenue Under ASC 606
Under ASC 606, companies that sell products or services with variable pricing must estimate the total transaction price upfront. Variable consideration covers volume discounts, rebates, performance bonuses, rights of return, and prompt-payment discounts. As contracts progress and actual data replaces estimates, the company reassesses those figures at each reporting date. A manufacturer that estimated a 3% return rate but sees 5% actually returned reduces revenue for the difference. A software vendor that recognized a performance bonus reverses it if the milestone falls through. The standard’s constraint on variable consideration is meant to limit wild swings, but companies with limited contract history or volatile pricing still face meaningful adjustments.
Commercial Lease CAM Reconciliations
Tenants under triple-net or modified gross leases pay estimated common area maintenance charges each month. CAM covers shared building expenses: hallway lighting, parking lot maintenance, elevator service, property management. The landlord estimates these costs at the start of the year and bills based on each tenant’s pro-rata share.
After the year ends, the landlord tallies actual expenses and compares them to what tenants paid. If actual costs ran higher, tenants get a bill for the shortfall. If lower, they receive a credit or refund. Most leases require the reconciliation within 30 to 90 days after year-end. On the tenant’s books, the true-up adjusts rent expense and either creates a payable or a receivable. Lease provisions matter here. Some cap CAM increases at a fixed percentage. Others let the landlord “gross up” variable expenses to reflect full occupancy, which can leave tenants owing more than the building actually spent. Tenants who don’t audit the reconciliation against the lease often overpay without realizing it.
Intercompany Allocations and Transfer Pricing
Companies with multiple subsidiaries allocate shared costs like centralized IT, legal, and management overhead using formulas based on revenue, headcount, or other drivers. Those allocations are provisional during the year. A true-up settles the intercompany accounts once the real costs and metrics are finalized.
Transfer pricing adds another layer for multinationals. Related entities transact at provisional prices throughout the year, and the company then evaluates whether those prices sit within the arm’s-length range required by tax law. Under Section 482 of the Internal Revenue Code, every intercompany transaction must be priced as if the parties were unrelated and negotiating in their own self-interest.2eCFR. 26 CFR 1.482-1 – Allocation of Income and Deductions Among Taxpayers If results fall outside the range, a true-up brings them back in. Tax authorities scrutinize these closely, and the IRS expects contemporaneous documentation supporting the methodology and any year-end adjustment.3Internal Revenue Service. Transfer Pricing Documentation Best Practices Frequently Asked Questions (FAQs) A true-up recorded after financial statements close creates a book-tax difference that has to be reported on the return. Getting the timing or documentation wrong can trigger penalties across multiple jurisdictions.
M&A Working Capital Adjustments
The purchase price in most acquisitions is based on an estimated working capital figure as of the closing date. The buyer then gets a window, typically two to three months, to verify actual working capital using the company’s books. If actual exceeds the target, the buyer pays the seller the difference. If it falls short, the seller either supplements with cash or accepts a reduction in the purchase price. This post-closing true-up is usually the final financial settlement between the parties, and it’s one of the most frequently disputed items in deal negotiations. Inventory valuation, receivables collectibility, and accrual timing are common flashpoints.
What True-Ups Do to the Financial Statements
A large true-up can move the numbers investors and creditors watch most closely. An unexpected inventory write-down that lifts COGS compresses gross margin. A workers’ comp under-accrual adds operating expense and reduces net income. On the balance sheet, corrected under-accruals push liabilities up, worsening leverage ratios and tightening working capital. Over-accrual reversals do the opposite: liabilities drop and net income gets a bump.
GAAP treats true-ups as changes in accounting estimates under ASC 250, meaning they’re recognized in the current period going forward rather than restated retroactively. If the change materially affects income, the company must disclose its nature and financial impact, and if it will affect future periods, those expected effects need disclosure too. Routine true-ups that aren’t individually material can aggregate into something significant, which is why auditors look at the full population of period-end estimate adjustments rather than evaluating each in isolation.
Public companies face higher stakes. The SEC has stated that when a material error is identified in previously issued financial statements, investors must be notified promptly and the error corrected.4U.S. Securities and Exchange Commission. Assessing Materiality: Focusing on the Reasonable Investor When Evaluating Errors A true-up that reveals a material misstatement in a prior period can trigger a restatement, a far more serious event than a routine estimate correction.
How Auditors Test True-Ups
Auditors don’t take these adjustments at face value. Under PCAOB Auditing Standard 2501, accounting estimates and the true-ups that flow from them must be tested using at least one of three approaches: testing the company’s own process for developing the estimate, building an independent expectation for comparison, or evaluating evidence from events after the measurement date. The auditor picks based on the risk profile of the specific estimate.5Public Company Accounting Oversight Board. AS 2501: Auditing Accounting Estimates, Including Fair Value Measurements
In practice, that means examining the data inputs, the assumptions, the methodology, and whether management has a reasonable basis for each. Auditors also evaluate potential bias. A company that consistently under-accrues expenses throughout the year and books large true-ups in the fourth quarter is going to draw questions about whether the original estimates were deliberately conservative to flatter interim results. As assessed risk rises, the standard requires more extensive evidence, not just management’s explanation.
Where True-Ups Become Earnings Management
True-ups sit at the intersection of legitimate accounting and potential manipulation. Estimates involve judgment, and judgment can be steered. A company chasing an earnings-per-share target can understate accruals in the current quarter and defer the catch-up. Or it can overstate accruals in a strong quarter to build a cookie jar reserve for weaker ones ahead.
The SEC has pursued cases along these lines, including a 2024 action against shipbuilder Austal USA for artificially reducing estimated costs on Navy contracts to hit revenue projections, and a separate 2024 case against Entergy Corporation for failing to expense aged materials and supplies over a six-year period despite internal warnings that the items exceeded future use requirements. Executives have also been charged personally for deferring expenses across periods to hit targets and for manipulating asset valuations to avoid impairment triggers.
The pattern in these cases is consistent: the company had information internally that contradicted the estimates it was recording externally. A true-up that corrects a genuine estimation error is routine accounting. A true-up that corrects a number the company knew was wrong when it booked it is something else, and auditors are specifically required to evaluate whether management bias influenced the underlying estimate.