Sales Tax Calculator
Add or remove sales tax (VAT/GST) from any price. See the tax amount, net, and gross totals at any rate. Fast, private, and fully client-side.
Runs in your browser — nothing uploaded
Price & rate
Total with tax
108.25
Net (before tax)100.00
Tax amount8.25
Gross (with tax)108.25
Add sales tax to a price or strip it back out — for any rate. Enter a price and your tax rate (sales tax, VAT, or GST) and instantly see the tax amount along with the net and gross totals. The reverse mode finds the pre-tax price from a tax-included total.
Private by design — your data never leaves your device
How to use it
No account, no upload — it all happens on your device.
1
Choose Add tax (price is pre-tax) or Remove tax (price includes tax).
2
Enter the price.
3
Enter your tax rate as a percentage.
4
Read the net, tax amount, and gross totals.
Add tax vs. remove tax
Two directions for the same rate.
| Mode | You enter | You get |
|---|---|---|
| Add tax | Net price + rate | Tax amount and gross total |
| Remove tax | Gross price + rate | Net price and the tax inside it |
How the math works
- Adding tax: gross = net × (1 + rate). A $100 item at 8.25% becomes $108.25.
- Removing tax: net = gross ÷ (1 + rate). From a $108.25 total at 8.25%, the net is back to $100.
- Rates vary by location. This tool uses a single flat rate — check your local rules for combined state, county, and city taxes.
Frequently asked
How do I work backward from a tax-included price?
Switch to Remove tax. The calculator divides the gross price by (1 + rate) to recover the net price, then shows the tax portion. This is how you find the pre-tax amount on a receipt that only lists the total.
Does this work for VAT and GST?
Yes. Sales tax, VAT, and GST are all percentage-of-price taxes, so the math is identical — just enter your local rate. It does not handle compound or multi-tier tax rules, which vary by region.
Is my data sent anywhere?
No. The calculation runs entirely in your browser. The amounts you enter are never uploaded or stored.