Tax Calculators

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How to use the sales tax deduction calculators

US filers who itemise can generally choose between deducting state and local income tax or state and local sales tax, not both. The sales tax route tends to matter most in states with no income tax, or in a year when you made a large purchase such as a vehicle, boat or major home renovation.

Two routes exist for arriving at the number. You can use the IRS table for your state and income range, or you can add up the actual sales tax you paid. The actual-expense route requires receipts, but it can produce a larger deduction after a big-ticket purchase.

Run both numbers with our IRS sales tax deduction calculator before you decide, and check whether itemising beats your standard deduction at all, if it does not, neither election changes anything.

Common mistakes to avoid

• Claiming both state income tax and state sales tax in the same year.
• Using a statewide rate when the rate that applied to your purchase includes a county or city component.
• Forgetting large purchases that qualify, vehicles, boats and certain home improvement materials.
• Assuming the deduction helps, without comparing total itemised deductions against the standard deduction.
• Adding up sales tax from memory instead of from receipts or bank records.

Frequently asked questions