ganak.appSales Tax Calculator
Calculate US sales tax for any state. Add or remove sales tax from any purchase price. Covers all 50 states with state-level average combined rates for quick estimates. Exact sales tax depends on the full delivery address and item taxability. Essential for e-commerce sellers, shoppers, and businesses operating across multiple US states.
100
$
%
State averages
Subtotal
$100.00
Sales Tax(8.25%)
$8.25
Tax Rate8.25%StateCalifornia
Total
$108.25
How Sales Tax Works
Formulas to add or remove tax from any price
Adding Tax
Multiply price by (1 + rate as decimal)
Price
$100
Total
$108.25
Total = $100 × 1.0825Removing Tax
Divide total by (1 + rate as decimal)
Total
$108.25
Pre-Tax
$100.00
Pre-Tax = $108.25 ÷ 1.0825Understanding US Sales Tax
Your combined rate = State + County + City taxes
State
County
City
0–7.25%
State Tax
+0–2%
County Tax
+0–3%
City Tax
No Sales Tax
DelawareMontanaNew HampshireOregonAlaska
Tips for Accurate Calculations
Best practices for sales tax compliance
Verify Rates
Check your state's Dept of Revenue for current rates.
Check Exemptions
Groceries, medicine, clothing often exempt.
Online Orders
Taxed based on shipping address.
Find Rate
Divide tax ÷ subtotal on receipts.
Tax Holidays
Some states offer tax-free days.
Use Tax
May owe on out-of-state buys.
Note: Rates vary by exact address. Verify for official invoices or tax filings.
Frequently Asked Questions
Common questions about sales tax rates and calculations by state