Sales Tax Calculator
Add or remove sales tax from any price. Enter net or gross amount and rate to get tax, total, and pre-tax price - free and 100% private.
Gross total
Features
100% Browser-Based
Your prices never leave your device. All calculations happen locally in your browser.
Free & No Sign Up
No registration, no limits, no hidden fees. Just open and calculate.
Instant Results
Tax, net, and gross amounts update live as you type - no calculate button.
Two Directions
Add tax to a net price, or reverse it out of a tax-included total with one click.
Quick Rate Chips
Common rates like 5%, 8.25%, 10%, and 20% are one tap away, with any custom rate supported.
How to Calculate Sales Tax?
- Choose Add Tax (from a net price) or Remove Tax (from a total).
- Enter the amount and your tax rate - or tap a quick rate chip.
- Read the net price, tax amount, and gross total instantly.
When to Use the Sales Tax Calculator
Checkout Planning
Know the true total of a cart before you buy, so there are no surprises at the register.
Expense Reports
Split tax-included receipts into net price and tax for reimbursement or bookkeeping.
Pricing Products
Set a shelf price, then see what customers actually pay once tax is added.
VAT Reclaims
Work out the VAT portion of a gross price for refund claims when traveling.
Tips for Working with Sales Tax
- ✓ Rates vary by country, state, and even city - always confirm the rate that applies to your purchase.
- ✓ Some US states have no sales tax on groceries or clothing; categories are taxed differently.
- ✓ B2B quotes are often net prices: add tax to show the customer their payable total.
- ✓ When reversing tax, never multiply by (1 - rate) - always divide by (1 + rate).
- ✓ Round only the final displayed figures; keep full precision through your math.