Is business loan interest tax deductible?
Yes — when proceeds are used for business. Business loan interest is deductible when the borrowed funds are spent on business purposes. The IRS tracing rule determines deductibility based on use of the proceeds, not the type of loan or lender. Report on Schedule C, Line 16b.
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On this page: Short answer · The tracing rule · Loan types that qualify · When it doesn't qualify · Mixed-use loans · Schedule C · Example · Records · Related lookups · FAQ
Short answer
Yes. Interest on a business loan is deductible when the loan proceeds are used for business purposes. The loan can be in your personal name or a business name — what matters is how the money is spent. Report on Schedule C, Line 16b (Interest — Other).
FreshBooks — Track loan interest payments and business financing costs automatically
Categorize monthly loan interest payments and keep your Schedule C Line 16b deductions organized throughout the year.
The tracing rule: How the IRS determines deductibility
The IRS uses the tracing rule to classify interest expense. Under this rule, interest is deductible based on what the borrowed funds are used for — not on the type of debt, the lender, or whether the loan is labeled "business" or "personal."
How the tracing rule works
- Loan proceeds deposited into a business account and spent on business expenses → business interest — deductible
- Loan proceeds deposited into a personal account and spent on personal expenses → personal interest — not deductible
- Loan proceeds spent partly on business and partly on personal expenses → allocate — deduct the business portion only
Practical implication: a personal loan used entirely for business generates fully deductible business interest. A "business loan" used for personal expenses generates non-deductible personal interest. The label on the loan doesn't determine the deduction — the use of the funds does.
Business loan types that generate deductible interest
- Term loans: Traditional bank or online lender business loans with a fixed repayment schedule
- SBA loans: 7(a), 504, microloan programs — interest is deductible when proceeds fund qualifying business purposes
- Business lines of credit: Interest on drawn amounts used for business operations or purchases
- Equipment financing: Interest on loans or financing agreements to purchase business equipment
- Commercial real estate loans: Interest on mortgages for business property (may be on a different schedule)
- Personal loans used for business: Fully deductible if proceeds are traced entirely to business use
- Home equity loans used for business: The business-use portion of the interest may be deductible; the personal portion is not (with limitations)
When business loan interest is not deductible
- Proceeds used for personal expenses: Vacations, personal purchases, household bills — even if the loan is labeled a "business loan"
- Cannot trace proceeds: If loan funds are commingled with personal funds without records showing how they were spent, the deduction is difficult to support
- Investment use: Funds used to buy investment assets (stocks, bonds) generate investment interest, not business interest — subject to different limitations
- Repaying another personal loan: Using borrowed business funds to pay off personal debt follows the use of the original proceeds for classification
Mixed-use loans: Allocating business vs personal interest
When a single loan funds both business and personal expenses, you can only deduct the business portion of the interest.
How to allocate mixed-use loan interest
- Step 1: Identify total loan proceeds
- Step 2: Identify how much was spent on business vs personal
- Step 3: Business-use % = business spending ÷ total proceeds
- Step 4: Deductible interest = annual interest paid × business-use %
Bank statements and receipts showing business purchases made with the borrowed funds are the best documentation. A separate business bank account makes tracing straightforward — all loan proceeds go in, all business spending goes out, creating a clean paper trail.
Where business loan interest goes on Schedule C
Business loan interest goes on Schedule C, Line 16b (Interest — Other). This is for interest on loans other than a mortgage on business property. Enter only the deductible business-use portion — do not enter the personal portion of mixed-use loan interest.
Mortgage interest on a business property goes on Schedule C, Line 16a (Mortgage Interest). Interest on a business vehicle loan is included in actual vehicle expenses on Line 9. Home mortgage interest for a home office is handled through Form 8829.
Example: Business loan interest deductions
Example 1: Term loan used entirely for business
- $50,000 business term loan to buy equipment
- Annual interest paid: $3,200
- Deductible: $3,200 → 100% → Schedule C, Line 16b ✓
Example 2: Personal loan with mixed use
- $20,000 personal loan: $14,000 spent on business inventory, $6,000 on personal expenses
- Business-use %: $14,000 ÷ $20,000 = 70%
- Annual interest paid: $1,400
- Deductible: $1,400 × 70% = $980 → Line 16b ✓
- Non-deductible personal portion: $420 ✗
What records to keep
- Loan agreement showing the loan purpose, amount, and interest rate
- Monthly loan statements showing interest charged and paid
- Bank statements tracing how the loan proceeds were spent on business expenses
- Receipts or invoices for major business purchases made with borrowed funds
- For mixed-use loans: a worksheet showing the business vs personal allocation
- Year-end interest summary from the lender (Form 1098 or equivalent letter)
TurboTax Self-Employed — Claim business loan interest on Schedule C Line 16b
TurboTax Self-Employed guides you through Schedule C Line 16b for business interest and handles the tracing rule allocation for mixed-use loans.
FAQ
Is business loan interest tax deductible?
Yes. Interest on a business loan is deductible when the loan proceeds are used for business purposes. Deductibility follows the use of the proceeds under the IRS tracing rule — not the type of loan or lender. Report on Schedule C, Line 16b.
What if the loan is used for both business and personal expenses?
Only the business portion of the interest is deductible. Calculate the business-use percentage (business spending ÷ total loan proceeds) and multiply by the annual interest paid. Keep bank statements and receipts showing how the funds were used.
Can I deduct interest on a loan in my personal name used for business?
Yes. The tracing rule determines deductibility based on use of the funds, not whether the loan is in a personal or business name. A personal loan whose proceeds are spent on business expenses generates deductible business interest — trace the funds through bank records.
Is SBA loan interest tax deductible?
Yes. Interest on SBA loans (7(a), 504, microloans) is deductible as a business expense when the proceeds fund qualifying business purposes — working capital, equipment, real estate, or other business expenditures. Report on Schedule C, Line 16b.
What records should I keep for business loan interest deductions?
Keep the loan agreement, monthly statements showing interest paid, bank statements tracing how proceeds were spent on business expenses, and receipts for major business purchases. For mixed-use loans, keep an allocation worksheet. A year-end interest summary from the lender simplifies the annual deduction calculation.
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Last reviewed: April 14, 2026