In most cases, the interest you pay on a business loan is a tax-deductible business expense. That lowers your taxable income and softens the real cost of borrowing. But the deduction comes with conditions — and the loan principal is never deductible. Here's what to know. (This is general information, not tax advice — confirm with your accountant.)
The general rule
The IRS generally lets you deduct interest on debt used for your trade or business. To qualify, a few things typically need to be true:
- You're legally liable for the debt.
- You and the lender intend the debt to be repaid.
- You and the lender have a true debtor-creditor relationship (an arm's-length loan, not a gift).
- The funds are used for business purposes, not personal ones.
Principal vs. interest
Common exceptions & gotchas
- Mixed-use funds — if you use part of a loan for personal expenses, only the business-use portion of the interest is deductible.
- Interest you haven't paid yet — cash-basis businesses deduct interest as it's actually paid.
- Fees vs. interest — some financing (like merchant cash advances) uses factor rates or fees rather than traditional interest; how these are treated can differ, so ask your accountant.
- Business interest limits — very large businesses can face limits on how much interest they deduct; most small businesses are exempt.
What to keep for your records
Hold onto your loan agreement, a statement or amortization schedule showing interest paid, and records showing the funds were used for business. Your lender or servicer can usually provide a year-end interest summary.
Thinking about financing your business?
Since interest is often deductible, the after-tax cost of business funding can be lower than it looks. If you're weighing your options, see what you qualify for — free, with no obligation and no hard credit pull.
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