Yes, you can deduct sales tax on your federal return, but only if you itemize on Schedule A and only if you choose sales tax instead of state and local income tax for the year. The deduction sits inside the State and Local Tax (SALT) cap, which is $40,400 for most filers in tax year 2026. In practice, it pays off most for people in states without an income tax and for anyone who made a large taxable purchase during the year.
You Have to Itemize First
The sales tax deduction lives on Schedule A of Form 1040, which means you have to give up the standard deduction to claim it. For 2026, the standard deduction is $16,100 for single filers, $32,200 for married couples filing jointly, and $24,150 for heads of household.1Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 Itemizing only helps you if your deductible expenses together beat those numbers.
Add up everything you could itemize: mortgage interest, charitable contributions, medical expenses above the threshold, property taxes, and either income tax or sales tax. If the total is higher than your standard deduction, itemize. If not, take the standard deduction. You can’t do both in the same year.2Internal Revenue Service. 2025 Instructions for Schedule A (Form 1040)
Income Tax or Sales Tax, Not Both
Federal law forces a choice. On Schedule A you deduct state and local income taxes or state and local general sales taxes, never both.3Internal Revenue Service. Instructions for Schedule A (Form 1040) (2025) You mark the sales tax election by checking a box on line 5a.4Internal Revenue Service. Schedule A (Form 1040) – Itemized Deductions
If you live in one of the eight states without a state income tax, the decision makes itself: sales tax is the only lever you have. In states that do impose an income tax, run both numbers. A year with a new car, a home renovation, or heavy taxable spending can push the sales tax total above what your state withheld from your paychecks. In most high-income-tax states, the income tax deduction still wins, but not always.
The SALT Cap for 2026
Whichever you choose, the SALT cap limits how much you actually get to deduct. The Tax Cuts and Jobs Act set the cap at $10,000 ($5,000 for married filing separately) beginning in 2018. The One Big Beautiful Bill Act, signed in 2025, raised it.5Office of the Law Revision Counsel. 26 USC 164 – Taxes
For 2026, the cap is $40,400 for most filing statuses and $20,200 for married filing separately. That single ceiling covers your property taxes plus whichever you elected, income tax or sales tax, combined.1Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 If property taxes alone are already close to $40,400, your sales tax deduction can be capped out no matter how much you paid at the register.
The higher cap phases down for high earners. It begins shrinking once modified adjusted gross income passes $505,000 ($252,500 for married filing separately), losing 30 cents for every dollar of income above that line and eventually settling back at $10,000 ($5,000 for separate filers).
How to Calculate What You Paid
The IRS gives you two methods for figuring your sales tax total, and you can pick whichever gives you the bigger deduction.
Actual Receipts
Track and total the sales tax you actually paid over the year. This can produce the largest number if you spent heavily, but it requires documentation. Receipts should show the tax amount, and while credit card and bank statements help fill gaps, the IRS expects you to back up your total if questioned.6Internal Revenue Service. Publication 17 (2025), Your Federal Income Tax
The IRS Optional Sales Tax Tables
Most filers use the IRS tables instead. The tables estimate your annual sales tax from your adjusted gross income, family size, and the sales tax rates where you live.2Internal Revenue Service. 2025 Instructions for Schedule A (Form 1040) The IRS also runs an online Sales Tax Deduction Calculator that produces the number from your ZIP code, income, and filing details.7Internal Revenue Service. Use the Sales Tax Deduction Calculator
Local rates matter here. Cities and counties often add surcharges on top of the state rate, and the tables and calculator adjust for those local differences by ZIP code. If you moved during the year, calculate a prorated amount for each place you lived. The table method works as a safe harbor: no receipts required. It also tends to be conservative because it reflects average, not actual, spending.
Adding Sales Tax on Big Purchases
On top of the table amount, you can add the actual sales tax paid on certain large items. The IRS leaves these out of the tables on purpose, because averaging them in would double-count for the people who bought them.8Internal Revenue Service. Use the Sales Tax Deduction Calculator – Section: Frequently Asked Questions
Items you can add:9Internal Revenue Service. Instructions for Schedule A (Form 1040) (2025) – Section: Taxes You Paid
- Motor vehicles, including cars, trucks, vans, motorcycles, motor homes, recreational vehicles, SUVs, and off-road vehicles. Sales tax on leased vehicles counts too.
- Boats and aircraft, but only if the tax rate charged matched the general sales tax rate in your area.
- Homes and major renovations, including mobile and prefabricated homes, new construction, and materials for a substantial addition or major renovation. The general-rate rule applies here as well, and for new construction the contractor generally must be acting as your agent under state law.
The rate-matching rule trips people up. If your state taxes vehicles or boats at a higher rate than ordinary retail, you can only deduct what you would have paid at the general rate. The extra doesn’t count. Keep invoices and bills of sale for every major purchase you add.
Taxes That Don’t Qualify
Not every charge labeled “tax” belongs on Schedule A. The deduction covers “general” sales taxes, meaning a tax imposed at one rate on the retail sale of a broad range of goods.5Office of the Law Revision Counsel. 26 USC 164 – Taxes Selective taxes on specific products or activities don’t count.
- Excise taxes on fuel, alcohol, and tobacco.
- Sales tax on purchases for your trade or business, which belongs on your business return, not Schedule A.3Internal Revenue Service. Instructions for Schedule A (Form 1040) (2025)
- Federal income tax, Social Security tax, transfer taxes, and stamp taxes.10Internal Revenue Service. Topic No. 503, Deductible Taxes
- Service charges for water, sewer, or trash collection, which are fees, not taxes.
When the Deduction Actually Helps
The sales tax deduction is worth the most in a few specific situations. If you live in a state without an income tax, it’s the only way to add anything beyond property taxes to your SALT total. If you made a big purchase during the year, adding that tax on top of the table amount can push your itemized deductions past the standard deduction line when they otherwise wouldn’t reach it.
It can also matter in years when income drops but spending stays high. The table amount tracks income, so a lower-income year produces a smaller table figure, and actual receipts from heavy spending may beat it by a lot. Retirees buying a recreational vehicle, families building a home, or anyone making a once-in-a-decade purchase should run both methods before defaulting to the standard deduction.