# Sales Tax and VAT Calculator

> Sales tax and VAT calculator: add tax to a net price or run a reverse calculation to remove VAT from a total. Editable rates, private, in your browser.

- **Canonical URL:** https://boringtoolskit.com/sales-tax-vat-calculator/
- **Category:** Seller & Business
- **Evidence level:** authored-methodology
- **Reviewed:** July 26, 2026
- **Last verified:** 2026-09-21
- **Privacy:** Inputs and results stay in this browser unless the page clearly labels an external request.

## How it works

Add-tax mode: tax = amount × (tax rate ÷ 100), and gross amount = amount + tax. Remove-tax mode: net amount = gross amount ÷ (1 + tax rate ÷ 100), and included tax = gross amount − net amount.

## Worked example

With the default $100 amount and 8.25% rate in add-tax mode, tax is $8.25 and the gross amount is $108.25. Switching to remove-tax mode treats the entered amount as gross and divides it by 1.0825 to find the net amount.

## Assumptions

- The entered rate is the full tax rate that applies to the transaction.
- Add-tax mode treats the amount as net before tax; remove-tax mode treats it as gross including tax.
- The calculator does not determine jurisdiction, exemptions, product taxability, filing treatment, or which rate legally applies.

## Common questions

### How do I add sales tax to a price?

Multiply the price by the editable rate divided by 100 to find the tax, then add that tax to the original price to get the gross total.

### How do I remove VAT from a price?

Divide the VAT-inclusive price by 1 plus the editable rate divided by 100. The result is the net price; subtract it from the gross price to find VAT.

### What does a reverse sales tax calculator do?

It converts a tax-inclusive gross amount into the pre-tax net amount and included tax using your editable rate, rather than simply subtracting the rate from the total.

## Related tools

- /payment-fee-calculator/
- /invoice-late-fee-calculator/
- /profit-margin-markup-calculator/
- /etsy-fee-profit/

## Sources

- [Calculation methodology and verification standard](/methodology/)
- [VAT rules and rates](https://taxation-customs.ec.europa.eu/taxation/vat/vat-rules-and-rates_en)

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