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Sales Tax Calculator: Add or Remove Tax from Any Price
Sales tax math is the most error-prone calculation in everyday money: add 8.25% to a price, or work backward from a total to find the pre-tax amount. A sales tax calculator does both instantly, for any rate — no signup, nothing uploaded.
Two ways to calculate tax
- Add tax — price × (1 + rate). A $100 item at 8% → $108 total
- Remove tax — total ÷ (1 + rate). Paid $108 at 8% → $100 pre-tax
Calculate sales tax free with Tooly
The Tooly Sales Tax Calculator handles both modes:
- Enter the price and your tax rate
- Toggle between Add Tax and Remove Tax
- See the exact tax amount and final (or pre-tax) total instantly
- Free, no signup, runs in your browser
Calculate sales tax free — no signup
Open Sales Tax Calculator
Open Sales Tax Calculator
When you'll use it
- Invoices — add the right tax to every line item
- Reimbursements — pull the pre-tax amount out of a receipt
- Budgeting — know the real total before you buy
- Bookkeeping — separate tax from revenue (pair with BankToCSV for statement reconciliation)
Quick reference (add tax)
| Price | 6% | 8% | 10% |
|---|---|---|---|
| $50 | $53.00 | $54.00 | $55.00 |
| $100 | $106.00 | $108.00 | $110.00 |
| $250 | $265.00 | $270.00 | $275.00 |
Frequently Asked Questions
Is this sales tax calculator really free? Yes — unlimited calculations, no account, no watermark.
What rate should I use? Your combined state + local rate. US averages range from under 5% to over 10% depending on location.
Is my data private? Everything runs in your browser — your numbers never leave your device.
What else should I check? The Discount Calculator and Percentage Calculator cover the surrounding math.