Year-End Checklist: Reconciling Processing Fees and Your 1099-K Before Tax Season

Why don’t your 1099-K and bank deposits match?

Because they’re not measuring the same thing. Box 1a on your 1099-K reports the gross dollar amount of card payments you processed for the year, before your processor takes anything out. What actually lands in your bank account is net of processing fees, and often net of refunds too, depending on how your processor nets things out. If you ran $300,000 through your terminal this year but only see roughly $291,000 show up in deposits, that $9,000 gap isn’t missing money and it isn’t an error on the form. It’s your processing fees, and it’s also tax-deductible, which is the part a lot of owners miss.

Are card processing fees actually tax deductible?

Yes. Processing fees, interchange, gateway fees, chargeback fees, whatever your statement calls them, are an ordinary and necessary cost of running a business that accepts cards, and they’re deductible the same way rent or software subscriptions are. The catch is that because your processor already nets those fees out of your deposits before the money ever reaches your bank, a lot of owners never separately record the fee as an expense. They just see a smaller deposit and move on. That means the deduction exists on paper but never makes it onto the books, which quietly inflates your taxable income every year it happens.

What should you reconcile before year-end?

Three numbers need to agree, or at least need to be explainable to each other: the gross total on your 1099-K, the total fees your processor charged you for the year, and the net deposits that actually hit your bank account. Most processors post a monthly or annual fee summary somewhere in their merchant portal, that’s the number you’re looking for, not just an estimate from your bank statement. If gross minus fees doesn’t roughly equal your deposits, refunds, chargebacks, or a processing delay around December 31st are usually the explanation, and it’s worth tracking down which one before you file rather than after.

A worked example

Say a retail shop processes $180,000 in card sales for the year through a flat-rate setup running about 2.6% plus 15 cents per transaction, a fairly typical small-business rate. Across roughly 9,000 transactions, that works out to something like $5,967 in fees, call it $6,000 for round numbers. The 1099-K shows $180,000 in Box 1a. The shop’s deposits for the year add up closer to $174,000. Without reconciling, an owner might report $180,000 as revenue and never claim the $6,000 fee deduction, overpaying tax on income that never actually reached them. With the reconciliation, revenue is $180,000, processing fees are a $6,000 deductible expense, and the books match what’s in the bank down to the refunds and timing differences you can actually account for. Rates vary a lot by processor and pricing model, interchange-plus setups often land lower, so pull your own numbers rather than assuming this example matches your statement.

Year-end checklist

• Pull your processor’s annual fee summary, not an estimate, the actual total they charged you.
• Confirm your 1099-K’s Box 1a gross figure against your own sales records.
• Record processing fees as a separate business expense in your books if your bookkeeping software hasn’t already broken them out.
• Reconcile any refunds or chargebacks issued near year-end, since timing can shift which tax year they land in.
• Flag any gap between gross, fees, and deposits that you can’t explain, and ask your processor for a transaction-level report before you file.
• If you take payment through more than one channel, terminal, invoicing, a payment app, do this reconciliation separately for each one.

When is the 1099-K actually due, and does this change the threshold debate?

No. This has nothing to do with the $20,000-and-200-transaction threshold question for third-party payment apps we covered in an earlier post, and everything to do with gross-versus-net on the 1099-K you’re already getting regardless of volume from your card processor. Processors generally issue 1099-Ks to merchants by early February each year. Reconciling fees is worth doing well before that form even arrives, since the fee total you need lives in your processor’s own reporting, not on the 1099-K itself.

This is general information, not tax or accounting advice. Talk to your bookkeeper or CPA about how to categorize these expenses for your specific business.

Sources: IRS, Form 1099-K FAQs: General Information; NerdWallet, 2026 guide to credit card processing fees.