CalculatorHandy

Financial Calculators

Sales Tax Calculator

Add sales tax or VAT to a price, or reverse it out of a receipt total. Enter your local combined rate (state plus local, for example).

Calculation
$

The price before tax, or the total including tax when removing tax.

%
Total with tax$129.90
Tax amount
$9.90
Price before tax
$120.00
Step-by-step working
  1. Tax = $120.00 × 8.25% = $9.90
  2. Total = $120.00 + $9.90 = $129.90

How to use the Sales Tax Calculator

  1. Choose add or remove.
  2. Enter the amount and the tax rate.
  3. Press Calculate.

Formula

Add: Total = Net × (1 + r)   Remove: Net = Total ÷ (1 + r)

Examples

  • 120 + 8.25% tax = 129.90.
  • Receipt of 129.90 at 8.25% → net 120.00, tax 9.90.

Frequently asked questions

Why can’t I just subtract 8.25% from the total?

Because the tax was calculated on the smaller net price. Subtracting the rate from the total removes too much; divide by (1 + rate) instead.

Related calculators