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Part I

2025 Publ 946 (PDF) · 2026-10-03 edition · updated 2026-10-04 · United States

  1. MACRS system (GDS or ADS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  2. Property class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  3. Date placed in service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  4. Recovery period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  5. Method and convention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  6. Depreciation rate (from tables) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  7. Maximum depreciation deduction for this year from the appropriate table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  8. Business/investment-use percentage . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  9. Multiply line 7 by line 8. This is your adjusted maximum depreciation deduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  10. Section 179 deduction claimed this year (not more than line 9). Enter -0- if this is not the year you placed the car in service . . . . . . . . .

Note:

  1. If line 10 is equal to line 9, stop here. Your combined section 179 and depreciation deduction (including your special depreciation allowance) is limited to the amount on line 9.
  2. If line 10 is less than line 9, complete Part II.

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▸Contents — 2025 Publ 946 (PDF)

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