How to use the Sales Tax Calculator
Enter the requested values, review any assumptions shown beside the inputs, then run the tool. The main result appears first, followed by supporting values that make the answer easier to understand.
Why this tool is useful
Add or back out sales tax from a purchase using any local tax rate. The page is intentionally focused on one task so it stays fast on mobile and easy to revisit.
Important: Financial calculations are estimates for education and planning, not financial, tax, lending or investment advice.