This reverse sales tax calculator works backward from a tax-included total. Enter the amount you actually paid in Québec, Canada, and it estimates the GST + QST and the original pre-tax price. Useful for expense reports, bookkeeping, and reconciling receipts. Everything is computed in your browser—nothing is sent to a server.
The province-level estimate shown here is provided for informational purposes only. Local county or municipal taxes may apply and are not included, and rates can change or become outdated. This tool is not tax, legal, or financial advice.
Need the other direction? Switch to the standard Québec sales tax calculator.