Sales Tax Calculator
Add tax to a price, or work backward from a tax-included total to find the pre-tax price.
Last updated
—Pre-tax
—Tax amount
—Total
The formulas
Adding tax: total = price × (1 + rate ÷ 100)
Removing tax: pre-tax price = total ÷ (1 + rate ÷ 100) — this is the reverse calculation, useful when a receipt only shows the final tax-included total.