The principal part of a car payment is not a deductible business expense.
Why it is not deductible
Repaying principal moves money from your bank to the lender and consumes nothing, so there is no expense to deduct. The cost of the vehicle is recovered instead through depreciation, or through the depreciation component already built into the standard mileage rate. Deducting the full payment is the most expensive mistake on this line, because it claims a cost you are already recovering another way.
Log it once, with the line already on it. Type an expense in plain words in ClaryBook and it is filed with a date, vendor, amount and what it was for, so the number your preparer needs for the principal part of a car payment is already written down.
Start for freeWhat the principal part of a car payment is confused with
- Line 16b, interest, other
- The interest inside the payment is deductible at the business-use percentage on line 16b; only the principal has no home on the return.
- Form 4562, form 4562, carried to schedule c line 13
- You never deduct principal; you recover the vehicle's cost through depreciation or a section 179 election on Form 4562, which carries to line 13.
Examples people try to deduct here
- A $620 payment of which $540 is principal and $80 is interest: the $80 business share is deductible, the $620 is not
- A $5,000 down payment on a work van, recovered through depreciation rather than deducted when paid
- Paying a truck loan off early, which creates no deduction
- A balloon payment at the end of a finance contract
What does not belong here
- The full monthly car payment
- A down payment treated as an expense
- Principal claimed on line 9 alongside a mileage deduction
The limit that applies
The vehicle's cost is recovered through depreciation on Form 4562, subject to the section 280F limits for passenger automobiles.
What to keep
Keep the amortization schedule so the interest and principal split for the year is documented, and keep the purchase contract that sets the depreciable basis.
Other things that are not deductible
| Expense | Line |
|---|---|
| a business suit | Not deductible |
| a government fine or penalty | Not deductible |
| a parking ticket | Not deductible |
| a personal expense on the business card | Not deductible |
| a spouse's airfare on your business trip | Not deductible |
| a traffic ticket | Not deductible |
| an unpaid invoice | Not deductible |
| commuting mileage | Not deductible |
| country club dues | Not deductible |
| estimated tax payments | Not deductible |
| federal income tax | Not deductible |
| groceries for your home | Not deductible |
Related lookups
Sources
This page explains how Schedule C lines work. It is general information, not tax advice for your situation. If an expense is large or the answer turns on a fact about your business, confirm it with your tax preparer.
Looking for a different expense? The full Schedule C line lookup has every line from 8 to 27 with the expenses that belong on each, and Schedule C expense categories walks the whole form in order.
Log it once, with the line already on it. Type an expense in plain words in ClaryBook and it is filed with a date, vendor, amount and what it was for, so the number your preparer needs for the principal part of a car payment is already written down.
Start for free