A Defense Contractor’s Guide to DCAA Audit Preparation in 2026
For companies pursuing or performing contracts with the Department of Defense and other federal agencies, the Defense Contract Audit Agency (DCAA) is a constant presence. Whether you are a first-time bidder facing a pre-award accounting system survey or an established prime working through an annual Incurred Cost Submission, DCAA’s standards drive how you account, how you bill, and ultimately how much of your earned revenue actually flows through to the bottom line. Understanding the audit landscape is fundamental to operating profitably in the GovCon space.
The first encounter most contractors have with DCAA is a pre-award accounting system survey. Before awarding certain contracts, federal agencies require contractors to complete this evaluation using Standard Form 1408. To pass the audit, your accounting system should be adequate and approved by the government under FAR Subpart 16.3. By arranging this audit, the government makes sure that it’s only paying direct costs of the contract and a reasonable share of the contractor’s indirect costs. For new contractors, this is often the gating event that determines eligibility for cost-reimbursable work — the higher-margin and higher-volume contract types that drive serious revenue growth.
Timekeeping is the next area where DCAA scrutiny is intense. The purpose of an incurred cost submission is to establish the final annual indirect cost rates and determine over/under billing for a given period, but the labor data feeding that submission must come from a timekeeping system that DCAA can trust. Floor checks — surprise visits during which auditors randomly interview employees about their charge codes and timesheets — are one of the most common ways problems surface. This DCAA audit uses the element of surprise as you won’t be notified about the floor check in advance. The auditor selects employees randomly to conduct interviews and check timesheets. Contractors that train employees rigorously on time-charging procedures, that enforce daily timekeeping rather than weekly catch-up, and that maintain clear policies on indirect versus direct labor consistently come through floor checks cleanly.
The Incurred Cost Submission (ICS) is the centerpiece of annual DCAA compliance for any contractor with cost-reimbursable or T&M contracts. FAR 52.216-7 requires contractors to submit a final indirect cost rate proposal within six months of the close of your fiscal year. The submission reconciles the provisional indirect billing rates used throughout the year against actual incurred costs, establishing the final allowable rates that determine settlement payments. A complete ICS includes multiple interrelated schedules (A–O) covering indirect rate calculations, direct costs by contract, cumulative allowable costs, payroll reconciliations, subcontract listings, and certification of final indirect costs, all supported by verifiable accounting data. The DCAA’s ICE Model spreadsheet provides the standard format.
Common audit findings are predictable. Common audit findings stem from unallowable costs, rate inconsistencies, labor and compensation issues, improper allocations, and weak documentation, all of which are preventable with disciplined accounting systems and ongoing monitoring. Unallowable costs — entertainment, lobbying, certain executive compensation above thresholds, and other items defined by FAR 31.205 — must be tracked separately throughout the year, not extracted at year-end. Improper allocation of indirect costs across cost pools is another frequent finding, and one that can trigger broader inquiry into accounting system adequacy.
For defense contractors across the DC, Northern Virginia, and Maryland corridor, working with firms like Watter CPA that understand FAR, DFARS, and CAS requirements alongside the technical accounting is the difference between a compliance burden and a competitive advantage.
