Sales Tax / VAT / GST Calculator
The sticker price is rarely the price. Tax sees to that.
Estimates only — not tax advice. Combined state + local rates vary; confirm yours before an invoice goes out.
How to add or extract sales tax
- Enter the price — pre-tax if you're adding tax, tax-inclusive if you're extracting it.
- Pick the tax rate — tap a common rate or type your local combined rate.
- Choose the mode: "add tax" when the price is pre-tax, "extract tax" when tax is already in it.
- Press Calculate to see the price before tax, the tax amount, and the total.
Frequently asked questions
How do you calculate sales tax?
Multiply the price by the tax rate as a decimal and add it: $100 at 7.5% tax = $100 + $7.50 = $107.50.
How do you remove sales tax from a tax-inclusive price?
Divide by (1 + the rate): a $107.50 price with 7.5% tax already included is $107.50 ÷ 1.075 = $100 pre-tax. Use the “extract tax” mode above.
What is the difference between sales tax, VAT, and GST?
They are all consumption taxes on price, with different collection points: US sales tax is added at the final sale, while VAT and GST are collected in stages along the supply chain. The arithmetic on this calculator is identical for all three.
Why do tax rates differ between cities?
States, counties, and cities can each levy their own rate on top of the base rate, so two towns can have different combined rates. The quick-pick buttons are common US combined rates — look up your local combined rate to be exact.
Is tax charged on the price before or after a discount?
Usually after — most US states charge sales tax on the price you actually pay, i.e. the discounted price.
Is this tax advice?
No. Planning estimates only.
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