Sales Tax Calculator
A sales tax calculator adds a percentage-based tax to a pre-tax price, common in the US where sales tax is added at checkout rather than included in the sticker price. Unlike VAT, US sales tax is applied once at the final point of sale rather than at every stage of production, and the rate varies by state, county, and even city — so there is no single correct rate built into the calculator; you supply the one that applies where the purchase happens.
Educational estimate only. Results are not medical, legal, or financial advice. Confirm important decisions with a qualified professional.
How it works
- Enter the price before tax.
- Enter your local sales tax rate as a percentage.
- Read the tax amount and total price.
Formula tax = price × (rate / 100); total = price + tax
Frequently asked questions
What sales tax rate should I use?
Your combined state, county, and city rate — it varies by location. Check your local government or retailer receipt.
Is sales tax the same as VAT?
No. Sales tax is added once at the final sale (mainly US); VAT is collected at each stage of production and is usually included in the displayed price outside the US. Use the VAT calculator for that.
Can I calculate tax on multiple items?
Enter the subtotal of all items as the price for one combined tax amount.
Are some items tax-exempt?
Often yes (groceries, medicine in many jurisdictions) — this calculator does not know exemption rules, so confirm what is taxable locally.
Is this the exact tax I will pay at checkout?
It is an estimate based on the rate you enter; rounding and mixed-category rates at some retailers may differ slightly.