Business check fraud can involve washing, alteration, counterfeiting, mail theft and unauthorized payments. Use this practical 10-step plan to strengthen your check stock, approval process, mailing procedures and account monitoring.
Business Check Security Guide
Protecting business checks requires more than one security feature
The strongest defense combines secure check stock, careful internal controls, safer mailing practices and consistent account monitoring.
Business checks remain an important payment method for payroll, accounts payable, vendor payments, refunds and other financial obligations. Unfortunately, they also remain a target for fraud. A stolen check can be altered, used as a template for counterfeits or deposited with a fraudulent endorsement. Blank check stock can also be misused if access, printing and approval procedures are not carefully controlled.
The latest Association for Financial Professionals Payments Fraud and Control Survey reported that 76% of organizations experienced attempted or actual payments fraud in 2025. Checks were the payment method most frequently affected, with 58% of organizations reporting check fraud. These figures show why businesses should treat every check as a controlled financial instrument rather than ordinary office paper.
Important: No check stock or security feature can guarantee that fraud will never occur. Protection is strongest when physical security features are combined with bank services, employee procedures and frequent account review.
How business check fraud happens
Understanding common schemes helps a business identify where its payment process may be vulnerable.
Check washing and alteration
Check washing occurs when information such as the payee name or amount is removed or changed. The U.S. Postal Inspection Service explains that stolen checks may be chemically washed, altered and deposited. Criminals may also scan or copy a legitimate check and use its account information to create additional fraudulent checks.
Counterfeit checks
A genuine check can become a template for a counterfeit. The routing number, account number, check layout, signature and business information may be copied and placed on fraudulent documents. Higher-quality printers and readily available design software can make some counterfeits appear convincing at first glance.
Mail theft
Outgoing checks may be stolen before reaching the intended recipient. In a 2024 analysis, the Financial Crimes Enforcement Network reported more than $688 million in suspicious activity connected with mail theft-related check fraud during a six-month review period. FinCEN found that stolen checks were altered, used as counterfeit templates or fraudulently signed and deposited.
Internal misuse and unauthorized payments
Risk does not come only from outside the company. Unrestricted access to blank stock, signature images, accounting software or printers can allow an employee or contractor to create an unauthorized payment. Weak approval procedures may also permit a fraudulent check to be issued without timely detection.
Fake check and overpayment scams
A fraudster may send a counterfeit check for more than the amount owed and request that the difference be refunded. The deposited funds may appear available before the bank determines that the check is fraudulent. The Federal Trade Commission warns businesses and consumers not to rely solely on the appearance of available funds when evaluating an unfamiliar check.
10 essential steps to protect your business checks
1. Choose the appropriate check security level
Start with professional business checks designed for commercial payments. Security features may include microprinting, artificial or true watermarks, security screens, warning bands, chemical protection, toner adhesion, prismatic backgrounds, thermochromatic ink and holograms. Each feature provides a different visual or physical indication that may help deter copying or alteration.
Choice Checks offers Good, Better and Best security options for different payment environments. Good Security may suit routine, lower-risk payments. Better Security adds stronger protection for companies wanting an upgrade from standard check stock. Best Security is intended for businesses handling higher-value or more sensitive payments. Review the Business Check Security Features Guide before selecting your check stock.
2. Ask your bank about Positive Pay
Positive Pay can allow a business to send issued-check information to its bank. When a check is presented, the bank compares details such as the check number and amount with the company’s issued-check file. Some banks also offer Payee Positive Pay, which may compare the payee name. Availability, fees, deadlines and exception-handling procedures vary, so ask your financial institution how its service works.
3. Separate check preparation, approval and reconciliation
Whenever staffing allows, the person creating a payment should not be the only person approving it and reconciling the bank account. Requiring a second review for new vendors, unusual payments or checks above a chosen threshold can make unauthorized activity more difficult. A small business with limited staff can still use owner approval, bank alerts and an independent monthly review to create additional oversight.
4. Lock up blank check stock and control printer access
Store unused blank business checks in a locked cabinet or secured room. Limit access to employees who are authorized to issue payments. Protect the printer used for checks, accounting-software credentials, signature files and MICR printing supplies. Never leave unused checks in an open tray or near a shared printer.
5. Track check numbers, voids and spoiled checks
Use check stock in sequence and investigate unexpected gaps. Record every voided or spoiled check, mark it clearly and retain or destroy it according to your company’s document policy. If a check number appears twice or an issued number cannot be explained, review it immediately. Reconciliation should include outstanding, cleared, voided and stopped checks.
6. Use safer mailing procedures
Do not leave an outgoing check in an unsecured mailbox overnight. The Postal Inspection Service recommends depositing outgoing mail before the last scheduled pickup or taking it to a local Post Office. Use properly fitted business check envelopes that protect confidential information and do not expose account details through the windows. Consider trackable delivery or additional controls for especially important payments.
7. Independently verify vendor and payment changes
A request to change a vendor’s address, payee name or payment instructions should be verified using a trusted contact method already on file. Do not rely only on the phone number or email address included in the change request. Business email compromise can make a fraudulent instruction appear to come from a familiar executive, employee or supplier.
8. Review bank activity frequently
Online banking makes it possible to identify suspicious activity sooner than waiting for a monthly statement. Review cleared checks, payee images, amounts and check numbers regularly. Activate available alerts for large transactions, unusual checks, low balances or other exceptions. Prompt detection gives the bank and business more time to investigate and respond.
9. Train employees to recognize warning signs
Employees who handle payments, mail, purchasing or vendor records should know the company’s approval rules. Warning signs include urgent secrecy, unexpected payee changes, an unfamiliar mailing address, an invoice that does not match the purchase record, an overpayment followed by a refund request, or pressure to bypass normal procedures.
10. Create a check-fraud response plan
Decide in advance who will contact the bank, place stop payments, secure the account, preserve check images and transaction records, notify management and file necessary reports. If mail theft is suspected, contact the U.S. Postal Inspection Service. Depending on the circumstances, the business may also need to contact local law enforcement, its insurance carrier, legal or accounting advisers and affected vendors.
Quick business check fraud-prevention checklist
- Select check stock with security features appropriate for your payment risk.
- Ask your bank about Positive Pay, Payee Positive Pay and transaction alerts.
- Require documented approval for checks and vendor-record changes.
- Secure blank checks, printers, passwords and signature files.
- Account for check-number sequences, voids and spoiled checks.
- Take outgoing checks to a secure mail location before final pickup.
- Review cleared-check images and bank activity frequently.
- Train employees and maintain a written incident-response plan.
Build several layers of protection
Business check security works best as a layered system. Secure paper can help reveal alteration or make reproduction more difficult, but the paper should support—not replace—strong payment procedures. Positive Pay, dual approval, locked storage, verified vendor changes, secure mailing and frequent reconciliation each address a different point of risk.
Review your process from the moment blank stock arrives until the cleared-check image appears in your bank account. Identify who can access the checks, who can create a payment, who approves it, how it is mailed and how quickly an exception would be noticed. Closing even one overlooked gap can strengthen the entire process.
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This article provides general educational information and is not legal, banking, accounting or insurance advice. Services and fraud-reporting requirements vary. Consult your financial institution and qualified advisers about controls appropriate for your business.
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