Sales Tax Calculator - Calculator See


Sales Tax Calculator

Calculate sales tax, total purchase price, and reverse sales tax from a gross amount for any state, county, or local tax rate.

Calculator Inputs

$
Pre-tax shelf price or subtotal.
%
Combined state, county, and municipal sales tax rate.

Calculated Results

Total Price After Tax
$107.50
Sales Tax Amount $7.50
Effective Tax Multiplier 1.075x
Pre-Tax Subtotal $100.00
Values calculate live as you adjust inputs.

About Sales Tax Calculator

A sales tax calculator determines the additional statutory tax levied by state, municipal, or provincial governments on retail goods and services.

What is Sales Tax Calculator?

A sales tax calculator determines the additional statutory tax levied by state, municipal, or provincial governments on retail goods and services.

How to Use This Calculator

  1. Enter the purchase price or subtotal.
  2. Specify your local combined sales tax percentage.
  3. View the exact tax dollar amount and final register total.

The Mathematical Formula & Variables

Tax = Price * (TaxRate / 100); Total Price = Price * (1 + TaxRate / 100)

Variables Definition

Symbol / Variable Name Description
Tax Rate Combined Rate Sum of state, county, and city sales taxes.

Step-by-Step Worked Example

Scenario: Retail item with a $100.00 price tag in a location with 7.5% sales tax.

  1. Sales tax = $100.00 * (7.5 / 100) = $7.50.
  2. Total register price = $100.00 + $7.50 = $107.50.

Result: Total = $107.50 (Tax: $7.50)

Frequently Asked Questions

How do I calculate the pre-tax price from a total with tax?

Divide the final total by 1 plus the tax rate as a decimal. For example, if total is $107.50 with 7.5% tax: $107.50 / 1.075 = $100.00.