You can take a federal sales tax deduction on your return, but only if you itemize on Schedule A and only in place of the deduction for state and local income taxes. Federal law lets you pick one or the other each year, not both.1Internal Revenue Service. Topic No. 503, Deductible Taxes The choice matters most if you live in a state with no income tax, or if a big purchase pushed your sales tax total above what came out of your paycheck for state income tax.
When Sales Tax Beats Income Tax
The simple test is arithmetic: figure both numbers and take the larger one. For residents of Texas, Florida, Washington, Nevada, Wyoming, South Dakota, and Tennessee, there is no state income tax to deduct, so sales tax is the only state-level option beyond property tax. The opposite is true in Alaska, Delaware, Montana, New Hampshire, and Oregon, which levy no statewide general sales tax; income tax will almost always be the better pick there.
If you live somewhere that taxes both income and sales, the income tax deduction usually wins in an ordinary year. A year with a car, boat, RV, or major home renovation can flip that result, because the sales tax on a single large purchase can be added on top of the everyday amount.
Itemizing Has to Beat the Standard Deduction
None of this helps unless your total itemized deductions come out higher than the standard deduction. For 2026, the standard amounts are $32,200 for married couples filing jointly, $24,150 for heads of household, and $16,100 for single filers and married filing separately.2Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026, Including Amendments From the One, Big, Beautiful Bill Sales tax is just one line inside the itemized total. Mortgage interest, charitable contributions, property taxes, and medical expenses above 7.5% of AGI all combine with it. If the sum is smaller than the standard deduction, take the standard deduction and skip the sales tax exercise entirely.
The 2026 SALT Cap
State and local taxes as a whole are capped. For tax year 2026, the ceiling is $40,400 for single filers, heads of household, and joint filers, and $20,200 for married filing separately.3Office of the Law Revision Counsel. 26 U.S. Code 164 – Taxes That cap covers your property taxes plus whichever tax you elect on the sales-versus-income choice.
Higher earners lose part of the expanded cap. Once modified adjusted gross income tops $505,000 ($252,500 for married filing separately), the cap shrinks by 30 cents per dollar of income above the threshold, bottoming at $10,000 ($5,000 for married filing separately). A joint filer with MAGI of $606,334 or more is back to a $10,000 SALT limit.4Bipartisan Policy Center. How Does the 2025 Tax Law Change the SALT Deduction
Two Ways to Calculate Your Sales Tax
The IRS accepts either method. You can total the actual general sales tax you paid using receipts from the entire year, or you can use the IRS Optional Sales Tax Tables (or the online Sales Tax Deduction Calculator, which runs the same math).5Internal Revenue Service. Use the Sales Tax Deduction Calculator The table method asks for your income, filing status, number of dependents, and location, then produces an estimate based on average spending patterns.
Most people use the tables. Tracking twelve months of register receipts is impractical unless you were unusually disciplined or your spending was heavy enough to clearly beat the table figure.
The income you enter for the tables is broader than AGI. Add tax-exempt interest, veterans’ benefits, nontaxable combat pay, workers’ compensation, the nontaxable portion of Social Security and railroad retirement benefits, nontaxable IRA or pension distributions (not counting rollovers), and public assistance payments.6Internal Revenue Service. Instructions for Schedule A (Form 1040) A higher input produces a higher table estimate.
Adding Major Purchases on Top
Whichever calculation method you use, you can add the actual sales tax from certain large purchases to the table amount. This is often where the deduction becomes meaningful. Eligible items:
- Motor vehicles, including cars, motorcycles, motor homes, RVs, SUVs, trucks, vans, and off-road vehicles. Leased vehicles count. If the rate on the vehicle was higher than the general sales tax rate, you can only deduct up to what the general rate would have produced.6Internal Revenue Service. Instructions for Schedule A (Form 1040)
- Boats and aircraft, but only if the sales tax rate matched the general sales tax rate.
- Homes (including mobile and prefabricated homes), substantial additions, and major renovations, again capped at the general rate. Materials you bought directly to build a home or complete a major renovation qualify too.
A single car can add $1,500 to $3,000 of sales tax on top of the table figure, which is why this step is worth the effort. Keep the bill of sale or closing paperwork for anything you add.
Claiming It on Schedule A
The deduction goes on Schedule A (Form 1040), the itemized deductions attachment.7Internal Revenue Service. About Schedule A (Form 1040), Itemized Deductions Check box 5a to elect general sales taxes for the year, and enter the total (actual receipts, or table figure plus qualifying major purchases) on line 5a.1Internal Revenue Service. Topic No. 503, Deductible Taxes The combined SALT total on line 5e is then held to the $40,400 cap ($20,200 if married filing separately), reduced by any phase-out.3Office of the Law Revision Counsel. 26 U.S. Code 164 – Taxes Tax software handles the box and the attachment automatically. Paper filers include Schedule A behind Form 1040.
The election is made year by year. You can deduct income tax one year and sales tax the next, whichever produces the larger number.
Records to Keep
Hold your return, Schedule A worksheets, and receipts for major purchases for at least three years from the date you filed.8Internal Revenue Service. How Long Should I Keep Records That matches the standard audit window. If you used actual expenses, keep the full set of receipts; the IRS can ask you to prove the total. With the table method, the documentation that matters most is the paperwork for any major purchase you added.
A Note for Pass-Through Business Owners
If you own an interest in a partnership or S corporation, an adjacent rule may free up room under your personal SALT cap for sales tax or property tax. Under IRS Notice 2020-75, when a state imposes an income tax at the entity level rather than on the individual owners, the entity deducts the payment, and it does not count against the owner’s individual SALT cap.9Internal Revenue Service. Notice 2020-75 Most states now offer an elective pass-through entity tax built around this treatment, with the election made at the entity level. This does not involve sales tax directly, but by pulling state income tax out of your individual SALT calculation, it can leave more headroom for your sales tax deduction. Raise it with your accountant before filing.