Power Calculators

🧾 Sales Tax Calculator (US States, Add or Remove Tax)

Price + tax, or the price before tax hidden in a total.

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Fill in the details and click Calculate to see your results.

Formula at a glance

Sales Tax Calculator: Tax — price × rate. Example: $100 in California + 1.5% local → Total with tax: $108.75
How the Sales Tax Calculator works: Tax — price × rate

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📘 About the Sales Tax Calculator

Sales tax is added at the till in most US states, on top of the shelf price. Each state sets a base rate — from 0% in Oregon, Montana, New Hampshire and Delaware to 7.25% in California — and counties and cities add local taxes, so combined rates often reach 8–10%.

Enter a price and a rate (or pick a state and add its local rate) to get the tax and total, or switch to reverse mode to find the pre-tax price inside a total. A table compares the base rates of large states.

🧮 Formula

Tax
price × rate
Total
price × (1 + rate)
Reverse
pre-tax price = total ÷ (1 + rate)

✏️ Worked examples

$100 in California + 1.5% local

You enter
Currency$ US dollar
Price or total100
CalculateAdd tax to a price
US state (optional)California
Tax rate (own rate)8.25%
Local tax on top of the state rate1.5%
You get
Total with tax$108.75
Sales tax$8.75
Tax rate8.75% — California state rate 7.25% + local 1.5%
Before tax · after tax$100.00 · $108.75

$108.75.

Remove 8.25% from $108.25

You enter
Currency$ US dollar
Price or total108.25
CalculateRemove tax from a total (reverse)
US state (optional)Use my own rate
Tax rate (own rate)8.25%
Local tax on top of the state rate0%
You get
Price before tax$100.00
Sales tax$8.25
Tax rate8.25%
Before tax · after tax$100.00 · $108.25

$100.00.

🧭 How to use this calculator

What you enter

  • Currency
  • Price or total
  • Calculate
  • US state (optional)
  • Tax rate (own rate) (%)
  • Local tax on top of the state rate (%)

What you get

  • Total with tax
  • Sales tax
  • Tax rate
  • Before tax · after tax

❓ Frequently asked questions

Which states have no sales tax?

Oregon, Montana, New Hampshire and Delaware have no statewide sales tax; Alaska has none at state level but allows local taxes.

How do I remove sales tax from a total?

Divide by 1 + the rate: $108.25 ÷ 1.0825 = $100.

Why is my receipt rate higher than the state rate?

Counties, cities and special districts add their own sales tax on top of the state rate.

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