All you have to input is the amount of sales tax you paid and the final price on your receipt. Our Reverse Sales Tax Calculator accepts two inputs. However in those cases where a price inclusive is mentioned a reverse GST calculator will need to be applied.
Taxpayers who want to calculate GST with the differential GST rate can use our tool.
Net Price Original Cost GST Amount. 236 is GST inclusive value 236 118 18 36 GST value. Final_price is GST inclusive price Calculation of GST part in this case is more complicated gst final_price 5 105 final_price 21 base_amount final_price 105 Example. If your total receipt amount was 5798 and you paid 107 percent in sales tax youd simply plug those numbers into our calculator to find out that your original price before tax was 5737.