Short answer: only part of a business loan payment is deductible. The interest on a loan used for your business is generally deductible as a business expense. The principal, the part that pays back what you borrowed, is not, because the loan was never counted as income when you received it. The same rules apply to SBA loans.
This page explains the general federal rules. It is not tax advice. Your situation, your business structure and state rules can change the answer, so confirm with a tax professional before you file.
Interest vs. principal
Every loan payment has two parts:
| Part of the payment | Deductible? | Why |
|---|---|---|
| Interest | Generally yes | It is a cost of running the business |
| Principal | No | You are repaying money that was not taxed as income when you borrowed it |
For the interest to be deductible, IRS guidance says you must be legally liable for the debt, both you and the lender must intend that it be repaid, and there must be a true debtor-creditor relationship (IRS Publication 535). A loan from a relative with no real expectation of repayment, for example, may not qualify.
Your lender's statements or amortization schedule show how much of each payment was interest. Our business loan calculator shows the split for any loan.
Is SBA loan interest tax deductible?
Yes, on the same terms as any business loan. Interest on an SBA 7(a) or 504 loan used for the business is generally deductible, and the principal is not. Upfront costs of getting the loan, such as an SBA guarantee fee, are generally treated as loan costs rather than interest (see below). Our SBA loan rates page explains those fees.
Loan fees, points and closing costs
Fees you pay to get a loan, such as commissions, origination fees and recording fees, are generally not deducted all at once as interest. They are capitalized and deducted gradually over the life of the loan (IRS Publication 535). If you pay off the loan early, any remaining balance is generally deducted then.
Loans used for both business and personal purposes
What matters is how you use the money, not what kind of loan it is. If you use part of a loan for the business and part for personal costs, you allocate the interest the same way: only the business share is deductible. That works in both directions. Interest on a personal loan or credit card used for business purchases can be deductible for the business portion, and interest on a business loan used for personal costs is not.
Keeping loan proceeds in a business bank account and paying only business expenses from it makes this simple to show.
Equipment loans and leases
- Equipment loans. Interest is deductible like any business loan. The equipment itself is not deducted through the loan payments. Instead, you recover its cost through depreciation, and you may be able to deduct much of it in the first year under Section 179 or bonus depreciation, subject to IRS limits.
- Equipment leases. Payments on a true lease are generally deductible as rent. But if the "lease" is really a purchase, for example a lease that ends with you owning the equipment for a nominal amount, the IRS treats it as a purchase. In that case you depreciate the equipment and deduct only the interest portion.
See our guide to equipment financing and our post on whether to buy or lease equipment.
The limit on business interest for larger businesses
Most small businesses can deduct all their business interest. A separate limit under Section 163(j) applies to larger businesses, but a business that is not a tax shelter is exempt if its average annual gross receipts for the prior three years are $32 million or less for 2026 (IRS fact sheet FS-2026-14).
What about merchant cash advances?
A merchant cash advance is usually structured as a sale of future revenue, not a loan, so it does not produce "interest" in the usual sense. How its cost is treated for tax purposes depends on the contract and your accounting, so ask your tax professional. Our merchant cash advance guide explains how these agreements work.
Interest you generally cannot deduct
- Interest on the personal-use share of any loan
- Interest paid in advance for future periods, which is generally deducted over the period it covers rather than when paid
- Interest the IRS charges on an owner's unpaid individual income tax, even when the tax comes from business income
Where to report it
Sole proprietors and single-member LLCs usually report business interest on Schedule C. Partnerships and corporations report it on their own returns. The IRS discontinued Publication 535, Business Expenses, after its 2022 edition. Much of its interest guidance now lives in Publication 334, Tax Guide for Small Business, and the IRS's guide to business expense resources maps each old topic to its new home.
Frequently Asked Questions
Are business loan payments tax deductible?
Only the interest portion. Interest on a loan used for your business is generally deductible as a business expense, while the principal is not, because the borrowed money was not taxed as income when you received it.
Is business loan interest tax deductible?
Generally yes, if you are legally liable for the loan, both sides intend it to be repaid, and you use the money for the business. If you use part of the loan for personal costs, only the business share of the interest is deductible.
Is SBA loan interest tax deductible?
Yes. Interest on an SBA loan used for the business follows the same rules as any business loan and is generally deductible. The principal is not, and upfront fees such as the SBA guarantee fee are generally treated as loan costs deducted over the life of the loan.
Can I deduct loan origination fees?
Generally not all at once. Fees to obtain a business loan, such as origination fees and commissions, are usually capitalized and deducted over the life of the loan. If you pay off the loan early, the remaining amount is generally deductible then.
Is the principal on a business loan tax deductible?
No. Repaying principal is returning borrowed money, not an expense. However, if the loan bought equipment or other business assets, you can usually recover their cost through depreciation or Section 179 expensing.
Do I need a tax professional?
For anything beyond simple interest on a business-only loan, it is a good idea. Mixed-use loans, equipment purchases, leases, cash advances and larger businesses all involve rules where the details change the answer.
Sources
- IRS Publication 535 (2022), Business Expenses, chapter 4, Interest (the final edition; still the IRS's most complete statement of these rules)
- IRS Publication 334, Tax Guide for Small Business
- IRS: Guide to business expense resources
- IRS fact sheet FS-2026-14 (Section 163(j) small business exemption for 2026)