The OECD's 2025 bid rigging guidelines ask public buyers to find out who stands behind each bid: every bidder should disclose its beneficial owners and any ties to other companies relevant to the tender (p. 19).
In the types table of what fraud is, procurement fraud works through bid rigging, kickbacks and false invoices, with companies and public bodies as its typical victims.
What is procurement fraud, in the ACFE's and the OECD's words?
The ACFE's Occupational Fraud 2026 (2,402 cases, January 2024 to September 2025) classes kickbacks and bid rigging by a buyer's employee as corruption, where the employee "misuses their influence in a business transaction in a way that violates their duty to the employer" (p. 106). Its fraud tree puts purchasing schemes under conflicts of interest, and invoice kickbacks and bid rigging under bribery, both branches of corruption (p. 13).
For the OECD, bid rigging is when companies expected to compete "conspire (typically in secret) to raise prices or lower the quality" of what a tender buys (p. 10). Contractors can act as a cartel, which falls outside the ACFE's cases, or with an employee; an employee acting alone overlaps with insider fraud.
At which stage of a purchase does each scheme happen?
Table 1. Procurement fraud by stage of the purchase.
| Stage | What can be rigged | Trace in the data | Source or case |
|---|---|---|---|
| Need and specification | A specification written for one supplier | Fewer bidders than usual | OECD: a stage "vulnerable to bias, fraud and corruption" (p. 18) |
| Tender | Cover bids; award criteria leaked to one bidder | Rival bids alike in errors or author | Navy MUSE: fake bids on a 2017 task order |
| Award | A buyer with a hidden stake in the winner | Staff or relatives among the winner's owners | Navy MUSE: a supervisor was to become a 50 percent partner |
| Contract and change orders | Contract and modifications steered to one firm | Modifications keep landing with one supplier | Census Bureau: steered to a relative's firm |
| Invoice and payment | False invoices; kickbacks | Invoices with no delivery; payments to the buyer's side | Navy MUSE: false invoices; kickbacks, some to the insider's sporting club |
Only the last stage moves money between accounts, so it is the row a bank sees.
From Ufuk Gürdaş, reviewer of this entry: "In a bank's data, bid rigging can surface after the award: the OECD's 2025 guidelines note that a winning bidder may pay other cartel members, sometimes through invoices for work never provided, so a payment from a contract winner to a firm that bid against it deserves a second look."
Which six types make up procurement fraud?
From December 2016 to August 2022, Navy veteran Cory Taylor Wright and a supervisor in the Navy's MUSE division rigged bids and steered contracts. On a 2017 task order worth about $790,496, their fake rival bids all came in well above his company's price. Wright pleaded guilty to wire fraud and on 22 September 2026 was sentenced to 36 months (US Attorney's Office, Central District of California). His case shows five of the six:
- Bid rigging. Bidders agree in advance who wins.
- Kickbacks and bribes. A supplier pays someone on the buyer's side.
- Hidden ownership. A buyer's employee secretly holds a stake in a supplier.
- Leaked bid information. An employee tells a bidder what will win.
- False or inflated invoices. Bills for work never done, sometimes from an employee's shell company.
- Contract steering. A contract and its change orders go to one firm.
How does bid rigging work?
The DOJ's Antitrust Division gives this example: a low bidder withdraws in favor of the next lowest in return for a subcontract that splits the higher price (bid rigging primer, February 2021, p. 3). Of its four forms (pp. 2 to 3), bid suppression means a firm agrees not to bid, or withdraws. Complementary bidding, the most frequent, means cover bids priced too high or on terms the buyer will reject. Bid rotation lets conspirators take turns being low, and in subcontracting the losers get subcontracts from the winner.
How is a kickback hidden in the contract price?
Picture a US federal subcontract with an honest price of $400,000 (illustrative):
- Deal. The subcontractor promises the prime contractor's buyer 5 percent, $20,000.
- Quote. It bids $420,000.
- Payment. The prime pays and bills the cost on to the government.
- Return. $20,000 goes back to the buyer.
41 U.S.C. 8702 bans each step: offering, paying or accepting the kickback, and including its amount in the price the subcontractor or the prime contractor charges. Done "knowingly and willfully", that conduct carries a fine, up to 10 years, or both (section 8707).
Where do banks and payment teams see procurement fraud?
A Census Bureau program manager steered a contract and its modifications to a prime contractor and her relative's subcontracting firm for $790,000 in kickbacks and on 16 July 2026 was sentenced to two years (DOJ).
A bank never sees the tender. It sees the payments: a winner paying a rival bidder, or a supplier paying someone on the buyer's side. Before onboarding, verify who owns a supplier behind the account name.
complead, formerly Sanction Scanner, makes fraud prevention software that answers each payment request with approve, decline, review or step up, and the reason. Onboarding, screening, monitoring, fraud checks and investigations share one engine, so each business customer carries one risk score.
How is procurement fraud detected in bids, supplier files and payments?
Table 2. Red flags, where each shows up and a control that tests it.
| Red flag | Where it shows | Control |
|---|---|---|
| Identical calculations or spelling errors across rival bids (DOJ primer, p. 4) | Bid documents | Compare bids side by side |
| Same IP address, author or creation time (OECD, p. 23) | Bid file metadata | Keep digital bids; check metadata |
| The winner subcontracts to losing bidders (OECD, p. 25) | Subcontract approvals | Check subcontractors against the bidder list |
| The winner pays a rival bidder for work never provided (OECD, p. 11) | Bank payments | Flag transfers between firms in one tender |
| Bidders take turns winning (DOJ primer, p. 3) | Award history | Chart winners across tenders |
| Staff or a relative behind a supplier (Navy MUSE; Census Bureau) | Ownership records | Require beneficial owner disclosure (OECD, p. 19) |
| An employee unusually close to a vendor (ACFE, p. 71) | Conduct records | Conflict of interest declarations |
| Invoices for work not done (Navy MUSE; Chicago schools) | Invoices, receiving records | Match invoices to delivery evidence |
No single row proves fraud.
Billing schemes in the ACFE's 2026 study went a median 14 months undetected; the median for all cases was 12 months (p. 18).
Which penalties and bidder exclusions follow bid rigging, kickbacks and false invoices?
Table 3. Which rule covers which conduct, with its mental element and maximum.
| Where | Law and section | Mental element | Maximum or consequence |
|---|---|---|---|
| United States | Sherman Act, 15 U.S.C. 1, a felony | None in the text; per se illegal (DOJ) | Fine up to $100,000,000 (corporation) or $1,000,000 (any other person), 10 years, or both |
| United States | 41 U.S.C. 8702, kickbacks on federal contracts | "Knowingly and willfully" (section 8707) | Fine, 10 years, or both |
| United States | 18 U.S.C. 666; 18 U.S.C. 201 for federal officials | "Corruptly"; 666: the body gets over $10,000 a year in federal benefits and the deal is worth $5,000 or more | 666: fine, 10 years, or both. 201: fine or up to 3 times the bribe, whichever is greater, 15 years, or both |
| United States | 18 U.S.C. 1031, federal contracts of $1,000,000 or more | "Knowingly", with intent to defraud | $1,000,000 fine (more in set cases), 10 years, or both |
| United Kingdom | Bribery Act 2010, section 1 | Intends improper performance, or knows or believes acceptance is improper | On indictment, an individual faces up to 10 years, a fine, or both (section 11) |
| United Kingdom | Enterprise Act 2002, section 188, bid rigging | An individual agrees to the arrangements; "dishonestly" omitted from 1 April 2014 | 5 years on indictment, a fine, or both (section 190) |
| Scotland | Common law fraud (Annex D, Scottish Government) | Not set out there | Not set out there |
| England, Wales and Northern Ireland | False representation, Fraud Act 2006 section 2 | Dishonesty, plus intent to make a gain, cause a loss or expose another to a risk of loss | A fine, up to 10 years on indictment, or both (section 1) |
| UK public buyers | Procurement Act 2023, Schedule 6 and Schedule 7 | Exclusion, not a crime | Mandatory: fraud, bribery or cartel convictions, a CMA cartel decision. Discretionary: Chapter I infringements |
| European Union | Directive 2014/24/EU, Article 57 | Exclusion, not a crime | Must exclude for corruption or fraud convictions; may exclude for agreements distorting competition or unremedied conflicts of interest |
| European Union | Directive (EU) 2017/1371, fraud and corruption against EU financial interests, Articles 3(2)(b) and 4(2) | "When committed intentionally" | Maximum of at least 4 years for considerable damage or advantage, presumed above EUR 100,000 (Article 7(3)); Ireland in, UK and Denmark out (recitals 36 to 38) |
In England, Wales and Northern Ireland, only the director of the Serious Fraud Office, or the CMA or someone with its consent, can bring a cartel charge (section 190(2)).
Cases 4 to 6 of Bribery Act section 2 do not depend on whether the recipient knew the act was improper. Section 7 makes a commercial organization guilty when a person associated with it bribes to win or keep business for it, unless it proves it had adequate procedures to prevent such bribery.
Only England and Wales and Northern Ireland are covered by sections 1 to 9 of the Fraud Act (section 15(2)). The Procurement Act extends to the whole UK (section 126) and has applied since 24 February 2025, but it excludes devolved Scottish authorities except for procurement under section 115A (section 2(5)(a)).
Scotland's devolved buyers apply regulation 58 of the Public Contracts (Scotland) Regulations 2015. The DOJ's Procurement Collusion Strike Force reports 215+ investigations opened and 90+ guilty pleas and trial convictions as of 30 September 2026, and its Tip Center takes complaints about collusion affecting government procurement, grant and program funding.
The NCSC sends fraud victims to Report Fraud (0300 123 2040) in England, Wales or Northern Ireland and to Police Scotland (101) in Scotland.
What separates procurement fraud from vendor fraud and corruption?
Procurement fraud names a process. Terms named for the actor or the method overlap with it. In a Chicago schools case, a former principal and two others billed schools for services never provided, then pleaded guilty to wire fraud (US Attorney's Office, Northern District of Illinois).
Table 4. Procurement fraud next to the terms it overlaps with.
| Term | Who acts | What is taken or bent |
|---|---|---|
| Procurement fraud | Insiders, suppliers or both | The tender, the contract or the payment |
| Vendor and invoice fraud | A criminal posing as a real supplier, or an employee who edits a vendor record | Payments sent to the wrong account |
| Employee fraud | Staff, against their own employer | Cash, stock, pay or influence |
| Embezzlement | Someone trusted to hold money or property | What was lawfully received |
| Corruption | An employee misusing influence in a business deal (ACFE) | The duty owed to the employer |
The Navy, Census Bureau and Chicago cases each had an insider at the buyer. When the supplier is real and only the bank account on its invoice is fake, the CEO fraud entry takes over.
Related terms
- Employee fraud. Fraud by staff against their employer.
- CEO fraud. Posing as an executive to get a payment.
- Serious Fraud Office. Prosecutes serious fraud in England, Wales and Northern Ireland.
- Embezzlement. Taking what one was trusted to hold.
- Insider fraud. Fraud from inside an organization.
