A business loan is not itself deductible, because the money you borrow was never taxed as income. The interest you pay on that loan generally is deductible, as an ordinary business expense, provided the funds went to business use.
That single distinction between principal and interest answers most of what owners want to know. The rest of the detail matters when the borrowing is unusual, when the money gets mixed with personal spending, or when the product is not technically a loan.
Why Loan Proceeds Are Not Income
When a lender advances $100,000, you have received cash and taken on an obligation of equal size. Nothing has been earned. That is why loan proceeds do not appear as revenue on your return, and it is also why repaying the principal produces no deduction. Paying back borrowed money simply reverses the original transaction.
Grant money and forgiven debt are treated differently, because in both cases you keep value without an offsetting obligation. Forgiven business debt is generally taxable unless a specific exclusion applies.
What Is Actually Deductible
| Item | Generally deductible |
| Interest paid on the loan | Yes, when the funds are used in the business |
| Loan principal repayment | No |
| Origination fees and points | Generally capitalized and deducted or amortized over the loan term; treatment varies by the fee |
| Annual or servicing fees | Treatment varies by the nature of the fee; some may be currently deductible while others may need to be capitalized or amortized |
| Equipment bought with the proceeds | Through depreciation or Section 179, separately from the interest |
| Interest on the personal share of a mixed-use loan | No, only the business portion qualifies |
Three conditions sit behind the interest deduction. You must be legally liable for the debt. There must be a true creditor relationship rather than an informal arrangement. And the funds must be used for the business rather than for personal purposes.
Mixed use is where owners create problems. If you borrow $80,000 and put $60,000 into the business and $20,000 into a home renovation, only the business share of the interest qualifies. Keeping borrowed funds separate can make tracing and documentation easier.
Timing matters as well. Interest becomes deductible as it is paid or accrued, depending on your accounting method, rather than when the loan closes. On a revolving line of credit, interest accrues only on what you have drawn, so an unused facility produces no deduction until you use it.
The Limit Most Small Businesses Escape
There is a cap on how much business interest a taxpayer can deduct in a year, under section 163(j). Most small businesses never touch it, because of a gross receipts exemption.
According to the IRS, a business generally meets the gross receipts test of section 448(c) when it is not a tax shelter and has average annual gross receipts of $25 million or less in the previous three years. The inflation-adjusted gross receipts amount for 2026 is $32 million. Businesses meeting the gross-receipts exception are generally exempt from the section 163(j) limitation, although the interest still must otherwise qualify for deduction.
Where It Gets Complicated
Not every funding product is a loan, and the tax treatment follows the legal substance rather than the marketing label.
A merchant cash advance is typically structured as a purchase of future receivables rather than a conventional loan. Because of that, its charges should not automatically be treated as loan interest, and the agreement should be reviewed with your tax professional. Our comparison of a merchant cash advance and a business loan sets out how the two products differ.
Invoice factoring is generally structured as a sale of receivables rather than borrowing. Factoring fees are often treated as business financing expenses, but their precise tax treatment depends on the arrangement and should be confirmed with your tax professional.
Neither product should be compared to a conventional loan solely by looking for a stated interest rate. Merchant cash advances commonly use factor rates, while invoice factors generally charge discount or factoring fees. Our guide to factor rates and interest rates explains the arithmetic.
Everything here is general information about how these rules usually work. Your accountant applies them to your specific return, your entity type, and your state.
✓ 6+ months in business
✓ $15,000+ monthly revenue
✓ Active business bank account
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Frequently Asked Questions
Can I deduct my entire business loan payment?
No. Each payment splits between principal and interest. Only the interest portion is deductible. Your lender’s amortization schedule or year-end statement shows the split. On a standard amortizing term loan, early payments generally contain a larger interest component.
Is an SBA loan treated differently for tax purposes?
The interest is deductible on the same basis as any other business loan, and the principal is not. The treatment of SBA guarantee and other loan fees depends on the fee and may require amortization rather than an immediate deduction. The federal guarantee changes the lender’s risk, not your tax treatment.
Are origination fees deductible in the first year?
Often they are spread across the life of the loan rather than deducted all at once, since they buy a benefit lasting the full term. Treatment depends on the fee and the loan, which is a question for your accountant.
What happens if I use a business loan for personal expenses?
The interest on that portion stops qualifying as a business deduction. Allocate proportionally, and keep records showing where the money went. Auditors look at how funds were actually spent rather than at the loan’s stated purpose.
Is merchant cash advance cost deductible?
MCA charges should not automatically be treated as loan interest. Their tax treatment depends on the agreement and should be confirmed with your tax professional. Bring the funding agreement to your accountant rather than assuming loan treatment applies.
