How do you calculate sales tax forward (exclusive)?

To calculate sales tax on a pre-tax amount, multiply the net price by the tax rate decimal: Tax = Net × (Rate / 100). The total price is Net + Tax.

How do you calculate reverse sales tax (inclusive)?

To extract pre-tax amount from a total tax-inclusive price, divide the total by (1 + Rate / 100): Net = Total / (1 + Rate / 100). The tax paid is Total - Net.

What is the difference between Sales Tax, VAT, and GST?

Sales tax is a single-stage tax levied at the final point of sale to the consumer. VAT (Value Added Tax) and GST (Goods and Services Tax) are multi-stage taxes collected on incremental value added at each supply chain step.

Can I calculate fractional tax rates like 8.875%?

Yes. The calculator accepts any decimal tax percentage (e.g. 6.25%, 7.5%, 8.875% NYC sales tax).

Does this tool store any financial data?

No. All calculations run strictly in your web browser memory. No prices or transactions are recorded.

Sales Tax & VAT Calculator

Calculate sales tax, VAT, or reverse tax from gross amounts with global tax presets.

100% free
Private in browser
No signup
No watermarks

Pre-Tax Amount ($)

Tax Rate (%)

Common Tax Presets:

Pre-Tax (Net)

$100.00

Tax (8.25%)

+$8.25

Total (Gross)

$108.25

Rate this tool

Be the first to rate — helps others and improves this page.

About Sales Tax & VAT Calculator

The Sales Tax & VAT Calculator helps consumers, freelancers, e-commerce sellers, and small business owners compute tax amounts effortlessly. It features both forward calculation (adding sales tax or VAT onto a pre-tax net price) and reverse calculation (extracting the original net price and embedded sales tax from a tax-inclusive retail total).

How to use Sales Tax & VAT Calculator

Enter Amount & Tax Rate: Type in your dollar amount and tax percentage, or click one of the quick regional presets (e.g. 5%, 10%, 18%, 20%).
View Itemized Breakdown: Instantly view pre-tax net amount, sales tax dollars owed, and total gross payable.

Key features

Dual Forward & Reverse Modes: Seamlessly toggle between tax-exclusive (add tax) and tax-inclusive (extract tax) calculations.
Regional Preset Rates: Instant one-click presets for common international sales tax, VAT, and GST brackets.
Precision Currency Formatting: Rounds strictly to 2 decimal places to match accounting and receipt standards.
Copyable Summary: One-click copy of the itemized tax breakdown for accounting ledgers and client invoices.

Frequently asked questions

How do you calculate sales tax forward (exclusive)?: To calculate sales tax on a pre-tax amount, multiply the net price by the tax rate decimal: Tax = Net × (Rate / 100). The total price is Net + Tax.
How do you calculate reverse sales tax (inclusive)?: To extract pre-tax amount from a total tax-inclusive price, divide the total by (1 + Rate / 100): Net = Total / (1 + Rate / 100). The tax paid is Total - Net.
What is the difference between Sales Tax, VAT, and GST?: Sales tax is a single-stage tax levied at the final point of sale to the consumer. VAT (Value Added Tax) and GST (Goods and Services Tax) are multi-stage taxes collected on incremental value added at each supply chain step.
Can I calculate fractional tax rates like 8.875%?: Yes. The calculator accepts any decimal tax percentage (e.g. 6.25%, 7.5%, 8.875% NYC sales tax).
Does this tool store any financial data?: No. All calculations run strictly in your web browser memory. No prices or transactions are recorded.