# Calculate Sales Tax

Use the following calculators to figure out sales tax.

• The first calculator allows you to calculate sales tax & add it to a purchase.
• The second calculator allows you to remove sales tax from a fully-priced item that already contained sales tax or VAT for purchases which are exempt from sales taxes or vat.

## Find Sales Tax Amount & Total Price With Sales Tax

### Y% sales tax added to \$X = \$Z

What is the final price with
% tax on \$ ?
\$ tax
\$ total

Sales Tax Formula: Y% * \$X / 100 = \$Z
where

• X = purchase price
• Y = sales tax percent
• Z = sales tax amount

Total Price Formula: \$X * (1 + (Y%/100) = \$Z
where

• X = purchase price
• Y = sales tax percent
• Z = price after sales tax

## Reverse Sales Tax Calculator: Find Price of Tax-exempt Purchases

### \$X - Y% VAT = \$Z

What is the price of an item before sales tax
% tax total \$ ?
\$ tax
\$ before tax

Reverse Sales Tax Pricing Formula: \$X * ((100 - Y%) / 100) = \$Z

where

• X = final price
• Y = sales tax percent
• Z = price before sales tax

Reverse Sales Tax Formula: \$X * (1 - (1 - Y%/100)) = \$Z

where

• X = final price
• Y = sales tax as a decimal
• Z = sales tax amount