Yes, a business can write off credit card processing fees. The IRS treats them as ordinary and necessary business expenses, fully deductible in the year they’re incurred, and the total bite usually runs between 1.5% and 3.5% of each transaction. The catch isn’t whether you can deduct them. It’s recording them correctly so your return lines up with the gross figures your processor already reported to the IRS.
Why the Fees Qualify
Federal tax law lets a business deduct any expense that is both ordinary (common and accepted in your industry) and necessary (helpful and appropriate for your operations).1Office of the Law Revision Counsel. 26 U.S. Code 162 – Trade or Business Expenses A necessary expense doesn’t have to be indispensable, just helpful.2Internal Revenue Service. Ordinary and Necessary Processing fees clear both bars without strain. Nearly every retail, service, and e-commerce business pays them, and accepting cards is tied directly to generating revenue.
What Counts as a Processing Fee
The amount your processor skims off each sale is really a bundle of distinct charges. All of them are deductible, and knowing the pieces makes your bookkeeping cleaner.
- Interchange fees, paid to the bank that issued your customer’s card. Credit card interchange typically ranges from about 1.15% to over 3% of the transaction, depending on card type, merchant category, and how the transaction is processed. Debit interchange is often under 1%, and premium rewards cards cost more to accept than basic ones.3Mastercard. Mastercard 2024-2025 U.S. Region Interchange Programs and Rates4Federal Reserve Board. Regulation II – Average Debit Card Interchange Fee by Payment Card Network
- Assessment fees, a smaller percentage charged by Visa, Mastercard, and the other networks for use of their payment rails.
- Processor markup, what your payment processor adds on top for handling the transaction, running the gateway, and settling funds.
- Chargeback fees, the flat charge your processor applies when a customer disputes a transaction, regardless of who wins the dispute.
- Gateway and PCI compliance fees, usually billed monthly or annually.
- Foreign transaction fees, if you process international sales and your processor adds a cross-border or currency conversion charge.
The per-transaction charges rise and fall with sales volume. The flat recurring charges don’t. Both are fully deductible, but tracking them in separate accounts makes your financials easier to read.
Record Gross Sales and Fees Separately
This is the part most small businesses get wrong, and it’s the part that matters most. When your processor settles a transaction, it deposits the sale amount minus its fees. A $500 sale at an effective rate of 2.9% plus $0.30 produces a fee of $14.80, so $485.20 hits your bank account. The mistake is booking that $485.20 as revenue and calling it done.
The right approach is to record $500 as gross revenue and $14.80 as a separate expense. Both numbers belong in your books. If you only record the net deposit, you understate both your income and your deductions. The tax bill ends up roughly the same, but your return no longer matches the gross figure the IRS already has on file.
Why the 1099-K Makes This Nonnegotiable
Your processor reports the gross dollar amount of all your card transactions on Form 1099-K. “Gross amount” means the total before any adjustments for fees, refunds, chargebacks, or discounts.5Internal Revenue Service. Instructions for Form 1099-K For businesses that accept card payments directly, there’s no minimum dollar amount or transaction count that triggers the filing; it goes out every year, to you and the IRS.6Internal Revenue Service. Understanding Your Form 1099-K
If the gross revenue on your return is lower than the 1099-K figure, that’s a mismatch the IRS can see. The processing fees you deduct are what bridge the gap between gross receipts and the net cash you actually banked. Recording gross revenue and fees as separate line items is what keeps those two numbers consistent.
When to Claim the Deduction
Cash Method
Under the cash method, you deduct expenses in the year you pay them.7Internal Revenue Service. Publication 538 – Accounting Periods and Methods Processing fees are easy here. Your processor takes its cut before depositing funds, so the fee is paid the moment the transaction settles. You deduct it in the same tax year the sale occurred. Most small businesses use this method, and under rules updated by the Tax Cuts and Jobs Act, businesses with average annual gross receipts of $25 million or less (indexed for inflation) can use the cash method even if they carry inventory.8Internal Revenue Service. IRS Issues Proposed Regulations for TCJAs Simplified Tax Accounting Rules for Small Businesses
Accrual Method
Businesses on the accrual method deduct an expense when the liability is fixed and determinable and economic performance has occurred.7Internal Revenue Service. Publication 538 – Accounting Periods and Methods For processing fees, economic performance happens when the processor completes the transaction.9Office of the Law Revision Counsel. 26 U.S. Code 461 – General Rule for Taxable Year of Deduction So if a sale happens on December 30 but the fee doesn’t settle until January 3, an accrual-basis business still takes the deduction in the year the transaction happened, provided the treatment is consistent year to year and the amounts are determinable.
Where to Report the Deduction
Sole Proprietors and Single-Member LLCs
If you file Schedule C, you have two reasonable spots. Processing fees fit on Line 10, “Commissions and fees,” because they’re fees paid to a third party tied directly to your sales. You can also put them on Line 27b, “Other expenses,” and itemize them in Part V (Line 48) with a label like “Credit Card Processing Fees” or “Merchant Service Fees.”10Internal Revenue Service. 2025 Schedule C (Form 1040) Either works. Pick one and stay with it.
Some older guides reference a “Bank charges” line on Schedule C. The current form doesn’t have one, and Line 17 is for legal and professional services, not bank fees. If your records still use an outdated line number, update them.
Corporations and Partnerships
C-corporations filing Form 1120 and S-corporations filing Form 1120-S report processing fees in the “Other Deductions” section with an attached statement describing the expense. Partnerships use Line 21 of Form 1065, also labeled “Other deductions,” with an attached statement.11Internal Revenue Service. Form 1065 – U.S. Return of Partnership Income For partnerships, the deduction reduces ordinary income that flows through to each partner’s Schedule K-1.
Substantiation
Keep your monthly processor statements regardless of entity type. They’re your primary documentation if the IRS asks. Reconcile them against bank deposits and your books every month, not at tax time when gaps are harder to trace back.
What Isn’t a Processing Fee
A few related costs look like processing fees but follow different tax rules. Mixing them in with your transaction fees is a common bookkeeping error.
- Card readers, terminals, and POS systems are capital expenses, not operating expenses. You can depreciate them using Form 4562, expense the full purchase price in year one under Section 179, or use bonus depreciation, which was recently restored to 100% for qualified property.12Internal Revenue Service. About Form 4562, Depreciation and Amortization
- Leased terminals or POS equipment produce a straight rent expense, deductible in the year paid and reported separately from transaction fees.
- Interest or factor fees on a merchant cash advance are interest expense, not processing fees. Interest deductions follow their own rules and can be subject to limitations.
Chargebacks and Fees on Refunded Sales
When a customer disputes a charge, the processor reverses the transaction and usually adds a chargeback fee. That fee is deductible. If you lose the dispute, you also lose the revenue from the sale, which drops your gross income naturally. If you win, the revenue comes back but the fee you already paid is still deductible.
Refunds trip people up. Many processors no longer return the original transaction fee when you refund a customer. You hand back the full purchase price, but the processor keeps its cut from the original sale. That retained fee is still a legitimate deduction. You paid it to process a real transaction, and a later reversal doesn’t change that. Make sure your bookkeeping captures those retained fees instead of netting them out invisibly.
Surcharges and Cash Discounts
Some businesses recover processing costs by adding a surcharge to credit card transactions or offering a discount for cash. Credit card surcharges are prohibited or restricted in several states, including Connecticut, Kansas, Maine, Massachusetts, and Oklahoma, and card networks impose their own caps and disclosure rules. Surcharges can never apply to debit or prepaid card transactions.
For tax purposes, a surcharge you collect from a customer is revenue. It goes into gross sales. You still deduct the full processing fee on the expense side. The surcharge doesn’t reduce the deduction; it’s additional income that happens to offset the cost.
Cash discount programs are structured differently. You post higher base prices and offer a discount to customers who pay with cash or debit. The higher price is your base revenue, the discount reduces it, and you deduct the full processing fees on the card sales that don’t get the discount. Because the price differential is framed as a discount rather than a penalty for card use, the legal restrictions on surcharges generally don’t apply, though any such program should still be reviewed against your state’s consumer protection rules.