6 Bank Fees and Interest You Can Deduct From Your 2026 Business Taxes

I still remember the exact moment I found an extra $2,800 in deductions. It was April 2021, and I was staring at my business bank statements from the previous year, feeling like I’d left cash on the table. I’d paid over $1,200 in credit card processing fees, $400 in monthly maintenance charges, and $1,200 in interest on a line of credit—and I hadn’t deducted a single penny of it. That mistake cost me. For 2026, you don’t have to make it. Bank fees and interest as business deductions are some of the easiest write-offs to miss, because they hide in plain sight on your monthly statements. But once you know what to look for, they can add up fast. Let’s walk through the six categories that could save you real money this year.

1. Interest on Business Loans and Lines of Credit

The most straightforward deduction here is interest you pay on money borrowed for your business. If you took out a term loan from a bank or a line of credit from a credit union, the interest is deductible—as long as the funds went toward business expenses. I once helped a client who used a personal line of credit to buy inventory; we had to trace every dollar to prove it was business-related. The IRS calls this “allocating” interest, and it’s a headache if you co-mingle funds. For 2026, the rule is simple: keep the loan in a separate business account, and the interest is fully deductible. That includes interest on business credit cards, which we’ll cover in Section 4. The key nuance? You can’t deduct interest on loans used to pay personal expenses, even if you run a business. So if you’re financing a family vacation with a business line of credit, that interest is off the table. Practical tip: ask your lender for a year-end interest statement (Form 1098 or a simple summary) to make tracking easier.

2. Bank Service Charges and Monthly Maintenance Fees

This one feels almost too small to bother with—until you add it up. Monthly maintenance fees on a business checking account, transaction fees for going over a limit, and even overdraft charges are all deductible as ordinary and necessary business expenses. I once paid $15 a month for a basic business account for three years without deducting a cent. That’s $540 I could have written off. For 2026, if your bank charges a monthly service fee (say $12 to $30), you can deduct it in full. Same for ATM fees when you withdraw business cash, and for returned deposit charges. The IRS views these as costs of running your business—not personal expenses. One caveat: if you have a personal account that you occasionally use for business, only the fees tied to business transactions are deductible. That’s why I recommend a separate business account. It makes your life easier at tax time and ensures you capture every fee.

3. Credit Card Processing Fees and Merchant Account Charges

If you accept credit cards for payments—whether through a card reader, online gateway, or invoicing software—you’re paying processing fees. Swipe fees, monthly statement fees, chargeback fees, and even annual PCI compliance fees are all deductible. When I ran a small online store, I was shocked to see that processing fees ate up nearly 3% of every sale. On $50,000 in revenue, that’s $1,500 in deductions I could have claimed. For 2026, the IRS treats these as ordinary business expenses under the category of “bank fees.” You don’t need a special form; just write them off on Schedule C or your corporate return. Pro tip: your payment processor (like Stripe, Square, or PayPal) provides a monthly or annual summary of fees. Download that report and attach it to your records. If you’re using a merchant account from a bank, the same rule applies—the monthly statement fee is deductible.

4. Interest on Business Credit Cards

Business credit cards are a double-edged sword. The interest can be high, but the deduction is real. If you carry a balance on a card used solely for business, the interest is deductible. I’ve seen freelancers and small business owners rack up $500 to $2,000 in annual interest charges, all of which can be written off. The trick is allocation. If you use the same card for personal and business purchases—which I strongly advise against—you can only deduct the interest that corresponds to the business portion. For 2026, the IRS expects you to calculate this proportion. For example, if 70% of your charges are business, you can deduct 70% of the interest. But honestly, it’s easier to get a dedicated business card. Most banks offer them with separate billing statements, and the interest deduction becomes clean. One more thing: annual fees on business credit cards are also deductible, as are late fees (though you should avoid those).

5. Loan Origination Fees and Points

When you take out a business loan, the bank often charges an origination fee—typically 1% to 3% of the loan amount. For a $50,000 loan, that’s $500 to $1,500. The good news: you can deduct it. The bad news: you usually can’t deduct it all in one year. The IRS requires you to amortize (spread out) the origination fee over the life of the loan. So if you have a five-year loan, you deduct 20% of the fee each year. Points—which are like prepaid interest—work the same way. I once helped a client who had paid $2,000 in points on a three-year loan; we deducted about $667 per year. The exception is if the loan is for less than one year; then you can deduct the full fee immediately. For 2026, keep track of any fees labeled “origination,” “processing,” or “underwriting” on your loan documents. Amortize them using the straight-line method (equal portions each year).

6. Overdraft Protection and Wire Transfer Fees

These are the small, annoying charges that often slip through the cracks. Overdraft protection fees—when your bank covers a transaction that exceeds your balance—are deductible if they occur on a business account. Same for non-sufficient funds (NSF) fees. And wire transfer fees, both incoming and outgoing, for business purposes are deductible too. I once paid $25 for a wire transfer to a supplier in China and another $15 for an incoming wire from a client. That’s $40 I could have written off. For 2026, if you’re wiring money to pay invoices or receive payments, those fees are ordinary business expenses. The IRS doesn’t require you to itemize each one—just total them up from your bank statements. One caution: if the overdraft or NSF fee results from personal spending on a mixed-use account, don’t deduct it. Keep a separate business account to avoid that hassle.

Conclusion: Don’t Leave Money on the Table—Track Every Fee

Bank fees and interest as business deductions are low-hanging fruit. They’re easy to miss because they feel small, but as I learned the hard way, they add up fast. For 2026, my advice is simple: review your bank statements line by line, categorize every fee, and keep a running log. Use accounting software like QuickBooks or Xero to auto-categorize them, or just a spreadsheet. And if you’re unsure about a specific charge, ask your CPA. The $2,800 I missed was a wake-up call. Don’t let that be you.