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In the United States, the Defense Contract Audit Agency (DCAA) examines defense contractors’ costs, proposals and business practices, then reports its findings to government contracting officials. Contracting officers—not DCAA alone—decide how those findings affect prices and allowable costs. The Department of Defense Office of Inspector General (DoD OIG) checks both audit quality and officials’ handling of audit findings; the Government Accountability Office (GAO) reviews agency programs and reports to Congress.
A DCAA “questioned cost” is an issue to resolve, not proof of fraud, a final disallowance or money recovered. To understand an overcharging claim, follow the amount from the auditor’s finding through the contracting officer’s decision—and check whether an official report establishes a final disallowance or recovery.
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Who audits defense contracts, and who makes the decisions?
| Office | Primary role | What its work establishes |
|---|---|---|
| Defense Contract Audit Agency (DCAA) | Audits contractor costs and proposals, including incurred costs, forward-pricing proposals, cost-accounting matters and business systems. | Audit findings and advice for contracting officials; a finding does not by itself settle the government’s final contractual decision. |
| Contracting officers, often at the Defense Contract Management Agency (DCMA) or a service agency | Resolve DCAA findings, determine their contractual effect, document agreement or disagreement, and negotiate or determine costs and rates as applicable. | The government’s documented resolution of the audit issue, including any agreed allowable amount or follow-up. |
| Department of Defense Office of Inspector General (DoD OIG) | Audits and evaluates oversight, including whether auditors had adequate evidence and whether contracting officers followed applicable rules and documented their actions. It can also assess hotline complaints about audits. | Findings and recommendations about the particular audits, actions or allegations it reviewed. |
| Government Accountability Office (GAO) | Reviews agency programs and administration for Congress, including DCAA’s audit programs and oversight. | Program-level findings and recommendations; a review sample is not automatically representative of every audit or contractor. |
These roles are connected but not interchangeable. An auditor examines and reports; a contracting officer resolves the contractual issue; watchdogs review whether the audit and follow-up were handled properly.
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- Identify the question. The review might concern costs already claimed for completed work, a proposed price before award or contract modification, compliance with cost-accounting requirements, a contractor business system, or a complaint about an audit. The question determines which records and rules matter.
- Examine the relevant records. For incurred costs, DCAA assesses whether the contractor’s claimed costs are allowable under government regulations and the contract. For a proposal requiring certified cost or pricing data, the Federal Acquisition Regulation (FAR) requires data to be accurate, complete and current so the contracting officer can establish a fair and reasonable price. DCAA may assess whether the proposal meets submission requirements and identify gaps.
- Report findings and evidence limits. DCAA may question particular costs or explain that it could not obtain enough appropriate evidence to give an opinion on a proposal as a whole. A DoD OIG report states that, even when DCAA disclaims an overall opinion for insufficient evidence, it remains responsible for reporting costs it determines are unallowable.
- Have the contracting officer resolve the issue. The officer evaluates the finding, documents the basis for agreement or disagreement, negotiates or determines allowable amounts as required, and records follow-up. The audit recommendation itself is not the final government decision.
- Allow watchdogs to test the process. DoD OIG may sample audit reports and contracting actions, check the evidence and documentation, and issue findings or recommendations. GAO assesses broader program administration and implementation. A sample can reveal control problems, but it should not be treated as an error rate for all DCAA work.
How does an overcharging allegation differ from an audit finding?
“Overcharging” can describe several different stages, and the stage matters. An allegation has not necessarily been substantiated. A questioned cost is an auditor’s concern for resolution. A contracting officer may sustain a finding, but the final cost treatment still needs to be established. A disallowance or recovery is a different outcome from a questioned amount, and none of these terms alone establishes criminal fraud.
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| Term or stage | What it means | What it does not establish by itself |
|---|---|---|
| Allegation | A claim that a contractor or official acted improperly; it may prompt a review or investigation. | That the claim is true or that the government has found an overcharge. |
| Questioned cost | An amount an auditor identifies for resolution, such as because its allowability or support is in question. | A final disallowance, recovery, proven overpayment or fraud finding. |
| Contracting officer’s resolution | The officer’s documented treatment of the audit issue, including a decision to agree or disagree and any required negotiation or determination. | Recovery of funds unless the record establishes that recovery occurred. |
| Disallowance or recovery | A final cost decision or a reported return of money, if established by the relevant record. | A criminal finding unless a separate criminal process establishes one. |
| Criminal fraud finding | An outcome of a separate law-enforcement process supported by case-specific evidence. | Something that can be inferred merely from a DCAA audit finding or questioned-cost figure. |
For any reported case, ask four questions: What did the auditor question? What evidence supported it? What did the contracting officer decide and document? Does the cited report establish a final disallowance, recovery or referral—or only a potential amount or recommendation?
What have watchdogs found in specific reviews?
The examples below involve different audit types, periods, samples and outcomes. They show why a questioned-cost figure should not be mistaken for taxpayer savings, a final loss or an agency-wide performance rate.
| Review and scope | Reported finding | What the figure means—and does not mean |
|---|---|---|
| DoD OIG, 2019: a sample of 21 DCAA reports that disclaimed an opinion but questioned $750 million | In two reports, contracting officers inadequately documented disagreement involving $219 million in questioned costs. | DoD OIG said contractors may have been reimbursed up to that amount for costs that were not allowable. It is a potential amount in the sampled reports, not a finding that $219 million was finally disallowed or recovered. |
| DoD OIG, 2014: a selected cross-section of 16 DCAA audits completed from October 2011 through February 2013 | Thirteen audits had one or more significant inadequacies. The deficiencies included planning, evidence, working-paper documentation, supervision, and inadequate cost or pricing data. DoD OIG made 96 recommendations associated with the 13 audits. | This is a historical finding from a selected sample, not a current or agency-wide error rate. |
| DoD OIG, 2014: one substantiated hotline complaint about a DCAA audit | DoD OIG found that a field office lacked sufficient evidence to conclude subcontract costs were unsupported and used an arbitrary, unsupported 20-percent decrement to calculate $6.6 million in questioned costs. It recommended removing the questioned costs in that report. | This example concerns an auditor’s work being reviewed; the questioned amount is not a recovery figure. |
| DoD OIG, 2017: 22 selected incurred-cost audit reports | In eight instances, contracting officers did not address $305 million in direct costs questioned by DCAA. DoD OIG also found missed penalty actions, inadequately documented disagreements and untimely follow-up. | The $305 million describes questioned costs in selected reports, not a final recovered sum. |
| DoD OIG, 2018: 23 contractor price proposals negotiated by the services and Defense Logistics Agency | DCAA considered all 23 proposals, valued at $6.4 billion, inadequate under FAR Subpart 15.4. Contracting officers took appropriate action on the inadequacies, but did not adequately document their actions in 9 of the 23 cases. | The proposal value is not an overcharge finding; the review concerned proposal adequacy and documentation. |
| GAO, 2025: a nongeneralizable sample of 10 task orders covering 57 incurred-cost audits, in a review of DCAA’s use and oversight of independent public accountants | GAO noted that DCAA had largely eliminated its incurred-cost backlog by the end of fiscal year 2018, before independent public accountants began conducting certain audits in fiscal year 2020. GAO’s report page records that DCAA transmitted its assessment of the program to Congress in March 2026; GAO said it would reassess the program annually. | The task-order sample was nongeneralizable. The 57 audits describe the review scope, not a count of audit failures or overcharges. |
How do proposal reviews differ from incurred-cost audits?
Both can surface cost or pricing problems, but they happen at different points and answer different questions. Treating them as equivalent can turn a proposal concern into a misleading claim about costs already charged to the government.
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| Comparison | Pre-award or pre-modification proposal review | Incurred-cost audit |
|---|---|---|
| Timing | Before the price is negotiated or a contract action is finalized. | After costs have been claimed for work performed. |
| Evidence examined | Proposal support and, when required, certified cost or pricing data that must be accurate, complete and current. | Accounting records and claimed costs, including direct and indirect costs. |
| Decision at issue | The contracting officer negotiates or establishes a fair and reasonable price and addresses proposal deficiencies. | The contracting officer resolves allowability and indirect-rate issues as applicable. |
| Possible contractual response | Price negotiation or correction of proposal deficiencies. | Cost disallowance, penalty assessment where applicable, or recovery, if established through the applicable process. |
| Oversight record | DCAA’s report, the contracting officer’s documented actions and any subsequent DoD OIG or GAO review. | DCAA’s report, the contracting officer’s cost or rate resolution and any subsequent DoD OIG or GAO review. |
What does “investigating overcharging” mean?
The phrase may refer to a contract audit, a contracting officer’s resolution, an oversight review, or a separate criminal investigation. DCAA performs contract audits and identifies cost or pricing issues. Contracting officers resolve the related contractual questions. DoD OIG can evaluate a hotline allegation about an audit or audit whether officials handled findings properly. GAO reviews program administration for Congress.
These oversight roles do not make an audit finding a criminal investigation. The cited examples establish reviews of audit quality, cost treatment and documentation; they do not establish details of criminal investigative procedures or a particular criminal case. A criminal characterization therefore requires case-specific evidence of a separate law-enforcement process.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How should readers interpret a watchdog report?
- Identify the type of review. A proposal review, incurred-cost audit, audit-quality evaluation and program review have different scopes.
- Read the sample and dates with the result. Selected reports and nongeneralizable samples cannot automatically describe every contractor, audit or current agency practice.
- Keep the amount’s status attached to it. Distinguish questioned, potential, sustained, disallowed and recovered amounts. Do not call a questioned-cost total taxpayer savings unless the source reports that outcome.
- Check both sides of the oversight chain. A contracting officer can fail to justify rejecting questioned costs; an auditor can also lack enough evidence to support a questioned amount. DoD OIG has reported examples of both.
- Look for the final action. Determine whether the report establishes a final cost decision, penalty, recovery or referral, rather than only a recommendation or potential exposure.
GAO’s 2025 report summarized the timing of one part of this system: “Before certain Department of Defense (DOD) contracts can be closed, the Defense Contract Audit Agency (DCAA) audits contractors’ incurred costs to ensure they are permissible under government regulations.” That describes an incurred-cost audit’s purpose, not a determination that a particular contractor overcharged.
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