You can deduct sales tax on a vehicle purchase, but only the state and local sales tax. You'll only want to deduct sales tax if you paid more in state and local sales tax than you paid in state and local income tax.

How much of my car purchase can I write off?

The maximum first-year depreciation write-off is $10,200, plus up to an additional $8,000 in bonus depreciation. For SUVs with loaded vehicle weights over 6,000 pounds, but no more than 14,000 pounds, 100% of the cost can be expensed using bonus depreciation.

Can I write off a car purchase for my business?

Tax Write-Off of Car Purchase

If you buy a car that you intend to use for business, you can write off some of the purchase price with the federal Section 179 deduction. You usually write off business purchases through depreciation, but Section 179 allows you to deduct the entire amount upfront.