Sales tax calculator: before and after tax
Calculate sales tax from a combined rate you enter. See the subtotal, tax amount and total for your estimate.
Your result
Check each field. Use valid numbers within the stated limits.
Draft and preview free. A clean estimate PDF costs €0.99 EUR, once. No subscription. Your estimate can use your local currency; the download is charged in euros.
How the calculation works
For a subtotal before tax, total = subtotal × (1 + rate/100). To remove included tax, subtotal = total ÷ (1 + rate/100). Enter the applicable combined state and local percentage yourself. This tool does not look up ZIP-code rates or determine nexus, taxability, exemptions or registration. Confirm the treatment with the relevant state or local tax authority.
Continue with a practical guide
Make an estimate clear before the job changes
Build an itemized estimate around scope, assumptions and exclusions, then document the price and schedule of additional work.
Read the guide ↗