When reporting farm income and expenses, interest paid or accrued in connection with your farming business is generally deductible as a business expense, subject to specific rules based on your accounting method, loan use, and applicable limitations. The IRS treats interest differently depending on whether you use the cash or accrual method of accounting, and you must allocate interest based on how loan proceeds are used.
Accounting Method Rules
- Cash Method: You can deduct interest paid during the tax year. However, you cannot deduct interest paid in advance (prepaid interest) before the year it is due. Interest paid with funds from a new loan (e.g., a line of credit) to cover an existing debt is not deductible until you begin repaying the new loan.
- Accrual Method: You can deduct only interest that has accrued during the tax year. If the interest is owed to a related person using the cash method, deduction is not allowed until payment is made and the interest is includible in that person’s gross income.
Interest Allocation Rules
- You must allocate interest based on how loan proceeds are used. Common categories include trade or business interest, passive activity interest, investment interest, portfolio interest, and personal interest.
- Allocation is typically done by tracing disbursements to specific uses. For example, if you use loan proceeds to buy a car for personal use, even if the loan is secured by farm property, the interest allocable to that purchase is considered personal interest.
- The allocation period begins when proceeds are used and ends when the loan is repaid or reallocated to another use.
Reporting on Schedule F (Form 1040)
- Report farm business interest on Lines 21a and 21b of Schedule F.
- Enter interest from a mortgage on real property used in farming (other than your main home) on Line 21a if you received a Form 1098. If no Form 1098 was received, report on Line 21b.
- Do not deduct prepaid interest for future years—only include interest applicable to the current tax year.
- If you claimed personal-use vehicle loan interest on Schedule 1-A (Form 1040), you cannot claim the same interest on Schedule F.
Business Interest Expense Limitation
- For tax years beginning in 2025, business interest expense may be limited under Section 163(j). The limitation is based on adjusted taxable income, which includes adding back depreciation, amortization, and depletion deductions.
- Small business taxpayers (with average annual gross receipts of $31 million or less over the prior three years) are not subject to this limitation and do not need to file Form 8990.
- Certain farming businesses may elect out of the limitation, but this requires using the Alternative Depreciation System (ADS) for qualifying property and forfeiting the special depreciation allowance.
Source:
Publication 225 - Farmer's Tax Guide (2025)
Schedule F Instructions (2025)
What’s New for Tax Year 2025
Disclaimer: Always verify details with current IRS forms, instructions, and your state’s Department of Revenue. For complex situations, consult a CPA or tax attorney.