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CalcWolf Finance Sales Tax Calculator
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Sales Tax Calculator

Tax amount and total price at any rate. Works in reverse too.

📅 Updated April 2026 Formula verified 📖 4 min read 🆓 Free · No sign-up

How Sales Tax Works in the US

There is no national sales tax in the US — each state sets its own rate (0% to 7.25%), and cities and counties can add local taxes on top. The total rate you pay is state + county + city combined. Five states have zero sales tax: Oregon, Montana, New Hampshire, Delaware, and Alaska (though some Alaska cities charge local tax). The highest combined rates are in parts of Louisiana, Tennessee, and Arkansas, topping 10%. Online purchases are taxed based on the delivery address, not the seller location, since the 2018 South Dakota v. Wayfair Supreme Court ruling.

What Gets Taxed and What Does Not

Most states exempt groceries (unprepared food) from sales tax — but not all. Mississippi, Alabama, and South Dakota tax groceries at the full rate. Restaurant meals are taxed in virtually every state. Clothing is exempt in Pennsylvania, New Jersey, Minnesota, and a few others. Prescription medications are exempt everywhere. The rules are genuinely confusing — a Snickers bar at a grocery store might be tax-free, but the same bar at a gas station convenience counter could be taxed as prepared food depending on your state.

⚡ CalcWolf Insight

Five US states have no sales tax: Alaska, Delaware, Montana, New Hampshire, and Oregon.

Frequently asked questions
Which states have no sales tax?
Oregon, Montana, New Hampshire, Delaware, and Alaska have no statewide sales tax. However, some cities in Alaska impose local sales taxes. If you live near a state border, shopping in a no-tax state can save 6-10% on large purchases like furniture and electronics.
Is sales tax included in the price in America?
No — unlike most countries, US prices do not include sales tax. The price on the shelf is pre-tax. Tax is added at checkout. This catches many international visitors off guard. A $99.99 item in a 9% tax area costs $108.99 at the register.
✓ Math logic verified against primary sources → See our verification process
Kevin Glover
Founder, CalcWolf · GLVTS · Blickr
All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →

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