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2025›Instructions for Schedule C (Form 1040)

! purposes and you claimed a deduction in 2025 on

Instruction 1040 (Schedule C) — Instructions for Schedule C (Form 1040), Profit or Loss From Business · 2026-10-03 edition · updated 2026-10-04 · United States

CAUTION Schedule 1-A (Form 1040) for the vehicle loan interest

allocable to your personal use, then you can’t claim a deduction for that same interest on Schedule C. See Schedule 1-A (Form 1040) and its instructions for more information.

If you deduct actual expenses:

  • Include on line 9 the business portion of expenses for gasoline, oil, repairs, insurance, license plates, etc.; and

  • Show depreciation on line 13 and rent or lease payments on line 20a.

For details, see chapter 4 of Pub. 463 .

If you use your vehicle for both business and personal

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▸Contents — Instruction 1040 (Schedule C) — Instructions for Schedule C (Form 1040), Profit or Loss From Business
Instruction 1040 (Schedule C) — Instructions for Schedule C (Form 1040), Profit or Loss From Business

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