Sales Tax Calculator
Sales Tax Terms
Tax Breakdown
| Before Tax (Net) | — |
|---|---|
| Tax Amount | — |
| After Tax (Gross) | — |
How to Calculate Sales Tax
Sales tax is usually quoted as a percentage of the taxable price. This calculator supports the two everyday questions: what is the total with tax added? and what was the pre-tax price if tax is already included?
Add Tax (Net → Gross)
When you know the price before tax:
Tax = Net × (Rate ÷ 100) · Gross = Net + Tax
Remove Tax (Gross → Net)
When the shelf price already includes tax:
Net = Gross ÷ (1 + Rate ÷ 100) · Tax = Gross − Net
FAQ
Does this include local surcharges? Enter the combined rate you pay in your jurisdiction. Some areas stack state, county, and city taxes.
Is this the same as VAT? The math is similar for a single flat rate, but VAT regimes may have exemptions, reduced rates, or invoice rules this tool does not model.