2026 tax year
Independent car dealer taxes and deductions
Floor plan interest, the finance on the cars sitting on your lot, has a carve-out of its own from the cap on deducting business interest. That is a rule written for this trade and it is worth real money to any dealer carrying stock on credit.
Vehicles are inventory, so nothing is deductible when you buy them and everything comes off as cost of goods sold when they sell. Reconditioning attaches to the car rather than being a period expense. Dealer licensing, bonds and lot insurance are ordinary deductible costs.
The rest of the independent car dealer deduction list
Ordinary and necessary business expenses, deductible in full in the year you pay them, provided they are genuinely for the business:
- Stock, as cost of goods sold
- Floor plan interest
- Lot rent
- Staff wages
- Liability insurance
- Reconditioning
- Advertising
- Licensing fees state
Worth knowing
Floor plan interest has a statutory carve-out from the limit on deducting business interest, which no other inventory-financed business gets.
That is what is specific to this trade. The larger deductions are the universal ones, see the full checklist.
What each deduction is worth to you
On $100,000 of profit with no state income tax, $1,000 deducted saves $305, 30.5%, because it comes off self-employment tax and income tax together:
| Net profit | Saved per $1,000 deducted | Effective |
|---|---|---|
| $40,000 | $231 | 23.1% |
| $100,000 | $305 | 30.5% |
| $200,000 | $297 | 29.7% |
The last row is worth less than the one above it, and that is not a mistake: past the Social Security wage base the self-employment part of the saving drops from 15.3% to 2.9%, and the higher income-tax bracket does not quite make up the difference. A deduction is worth most in the middle.
Add a state income tax and every row rises. The 1099 calculator applies that layer.
Where this comes from
The rules on this page that are specific rather than general are cited below. Follow a link to read the provision itself rather than taking our word for it:
- Floor plan financing interest is added to the business interest limitation, but taking it denies bonus depreciationIRC 163(j)(1)(C), 163(j)(9); IRC 168(k)(9)(B)
Related
- Full deductions checklist
- Every profession
- 1099 taxes by state
- Quarterly payments
- Is an S-corp worth it?
- Local income tax
General information about how these deductions work, not tax advice. Whether a particular expense is deductible for you depends on facts this page does not have, check with a tax professional before claiming anything listed here.