Calculate the original amount before tax from the final price. Essential for business expenses, receipt analysis, and tax planning. Works with sales tax, VAT, GST, and any other tax types.
Calculating tax breakdown...
A reverse tax calculator helps you determine the original amount before tax was applied when you know the final price including tax. This is essential for business expense analysis, receipt verification, and tax planning. Instead of calculating tax forward (amount + tax = total), it works backward (total - tax = amount).
Whether you're dealing with sales tax, VAT, GST, or any other tax type, our calculator provides accurate pre-tax amounts and detailed breakdowns for accounting and business purposes.
When you have the final price including tax and need to find the original amount:
When you have the pre-tax amount and need to calculate the total with tax:
You need reverse tax calculation when you have a receipt or invoice showing the total amount including tax, but you need to know the pre-tax amount for accounting, bookkeeping, or tax reporting purposes.
Yes, our calculator uses standard mathematical formulas used by accountants and businesses worldwide. However, always verify calculations for important financial decisions and consult with a tax professional for complex situations.
Absolutely! This calculator works with any percentage-based tax including sales tax, VAT, GST, HST, and other consumption taxes. Just enter the appropriate tax rate for your location.
For multiple tax rates (like GST + PST), add the rates together to get the combined rate. For example, 5% GST + 7% PST = 12% total tax rate.
Get accurate tax breakdowns for business expenses and receipts - completely free!
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