Defense Overpayments and Retained Discounts: Fraud Without a New Invoice

Defense contractor retained overpayments can lead to a False Claims Act case when a contractor knowingly hides money it owes the government or improperly avoids paying it back. If you reconcile vendor payments, the decisive record may be a discount letter, a credit note or a refund that never reached the government’s account. The invoice has been paid. The money question is still open.

What Is a Defense Contractor Retained Overpayment?

A retained overpayment is government money a contractor keeps despite an established obligation to return it. The False Claims Act reaches knowing concealment or improper avoidance of that obligation through what is called a reverse false claim. A new invoice is not required.

The contract and the payment history matter together. A negotiated discount may belong to the government, a duplicate payment may require repayment, or a later reconciliation may show that the contractor received too much. We follow the obligation through the records to the person who understood it and the decision that left the money with the contractor.

Guantanamo Employee Meal Reimbursements Not Returned

Guantanamo employee meal reimbursements not returned to the government were the issue in the Pentad case. The government alleged that Pentad failed to reimburse approximately $150,000 for employee meals between December 2013 and December 2016. The company agreed to a $300,000 civil settlement in August 2018.

TRICARE Aeromedical Vendor Discounts Withheld

TRICARE aeromedical vendor discounts withheld from the government were at the center of the International SOS settlement. The company provided overseas healthcare services and arranged air ambulance evacuations through third-party providers. The Justice Department alleged that International SOS negotiated lower prices, had a duty to pass those discounts to TRICARE, and instead billed the higher amounts.

In the International SOS settlement announcement, the government described a gap that began during the quoting process. It alleged that the company concealed the actual evacuation cost, billed the undiscounted amount and collected the difference. International SOS contended that it retained that money as a fee.

The government alleged that the saving belonged to TRICARE. Calling the difference a fee does not answer who was entitled to the money.

International SOS agreed in 2019 to pay $940,000 to resolve the allegations. A former regional flight desk manager brought the whistleblower case, putting the person who saw the evacuation arrangements at the center of the evidence.

TriWest’s Lower Provider Rates

TriWest Healthcare Alliance agreed in 2011 to pay $10 million to resolve allegations that it failed to pass negotiated provider savings to TRICARE. According to the Justice Department’s announcement, binding letters of agreement set lower rates, but TriWest submitted claims using the higher rates billed by healthcare providers.

Four former employees brought the case, and the government joined part of it. For someone reconciling provider payments, the important comparison is between the rate the provider billed and the rate the agreement required. The allegation was that the government paid without receiving the saving TriWest had already negotiated.

The Navy’s Estimated Bills and Missing Credits

A whistleblower complaint against Inchcape Shipping Services described how an estimated bill could remain too high after the actual supplier invoices arrived. The whistleblowers alleged that Inchcape’s Navy contract required reconciliation and a credit for the overpayment:

On the whistleblowers’ account, the Navy got a token repayment where the contract called for the money back. We see a refund obligation treated as optional.

Inchcape agreed to a civil settlement in 2018 resolving allegations of Navy port-service overcharges. The government’s allegations included overstated quantities, prices above contract rates and duplicate charges.

Military Capitation Rate Errors and Contractor Retained Overpayments

Military capitation rate errors can leave contractors holding inflated payments after they learn that the rates were wrong. In its 2024 military managed-care case, the Justice Department alleged that health plans knowingly retained inflated capitation payments. The government also alleged that Kennell & Associates, its actuarial consultant, failed to alert the Defense Health Agency to rate-setting errors and their payment effects.

The consultant’s role and the health plans’ roles were different. Kennell settled allegations about its failure to alert the agency, while the government pursued the plans over the retained payments. That distinction matters to an insider: the person who knows why the rate is wrong may work somewhere other than the business receiving the money.

In February 2025, SVCMC, formerly Saint Vincents Catholic Medical Centers of New York, agreed to a $29 million settlement. The government alleged that it retained and concealed inflated US Family Health Plan payments after learning in 2012 of rate-calculation errors affecting the preceding four years.

UPS Military Delivery Exception Codes and Late-Delivery Refunds

A false delivery time or exception code can prevent a federal customer from claiming a late-delivery refund. UPS’s federal contracts included work through U.S. Transportation Command supporting Defense Department agencies. The contracts promised delivery by specified times the next day, and late delivery could entitle the customer to request a refund.

The Justice Department alleged that UPS knowingly recorded inaccurate delivery times, used inapplicable exception codes and supplied inaccurate on-time performance data. A package could appear timely, or its lateness could appear excused by a security delay, an absent customer or a closed business. According to the government, those practices deprived federal customers of the ability to request refunds.

UPS agreed to pay $25 million in 2015 to resolve the allegations in a case brought by a former employee. For a delivery or customer-service employee, the contradiction may be in the timestamp or exception code. The refund depends on what the service record says happened to the package.

What the Payment Trail Shows

The payment trail connects the government’s entitlement to the contractor’s accounting. The International SOS discount and TriWest rate letter supply the supplier-side amount. The government-facing claim supplies the amount billed. The Inchcape complaint adds the later reconciliation, while UPS shows why the service record can be just as important as the bill.

A supplier credit note belongs beside the cost originally billed and the contract term governing that cost. If you see a credit in the vendor account, we examine whether it reached the government’s account, what payment it related to and who reviewed the difference. The same inquiry connects a duplicate payment to its repayment record. We work through those records with you, including the explanation for keeping the money.

The supplier detail can disappear inside a prime contractor’s total. In Hidden Costs: US Private Military and Security Companies and the Risks of Corruption and Conflict, published in 2022, Transparency International Defence and Security recommended reporting the identities, ownership and itemized value of subcontracted services with invoices. Its recommendation is pointed:

For a retained-discount case, we need that visibility into the supplier’s transaction. The amount the prime billed tells us only part of what happened to the government’s money.

Final Rates, Duplicate Payments and the Decision to Keep the Money

For cost-reimbursement staff, a paid invoice can still leave an account to reconcile. Under the allowable cost and payment clause, provisional rates give way to final rates based on actual annual costs, and the contractor updates its billings. Its completion voucher also includes subcontract amounts for which the prime is responsible.

The prompt payment clause requires repayment and notice for duplicate payments and payment-liquidation errors. A duplicate payment creates a repayment obligation even though the original bill has already been settled.

For a retained-overpayment case, we connect the established obligation to what the contractor knew and what it did with that information. The False Claims Act covers knowing conduct, deliberately ignoring the truth and recklessly disregarding it. A discount letter, completed reconciliation or internal discussion of a repayment can connect the accounting difference to a decision inside the business.

Can a Defense Contractor Whistleblower Receive a Reward?

A whistleblower case under the False Claims Act can pay 15% to 30% of what the government recovers. The International SOS, TriWest and UPS cases all began with former employees who knew the business.

When You Know Where the Money Stayed

If you reconcile supplier credits, negotiated rates or refunds that the government never received, speak with our whistleblower experts about the money your company kept. We connect what you know to the contract’s payment obligations and build the case with you. We bring in defense contractor whistleblower lawyers with the accounting experience your case needs and stay beside you throughout the process.