Reverse Tax Calculator: Calculate the pre-tax price from any tax-inclusive total.

Calculate Reverse Tax makes it easy to work backwards from a tax-inclusive price and find the original pre-tax amount. Calculate GST, PST, and HST amounts quickly and understand exactly how much tax is included in a total. It’s designed for shoppers, businesses, and anyone who needs a simple way to reverse sales tax calculations.

Hi everyone! 👋 I built Calculate Reverse Tax to solve a simple problem I kept seeing: when you have a tax-inclusive price, it isn't always obvious how to work backwards to the original price. It helps calculate the pre-tax amount and tax included for GST, PST, and HST. I’d love to hear your feedback—especially if there are features or tax scenarios you'd like to see added.

I ve been working on a small calculator project around reverse tax calculations, and one thing I noticed is that tax-inclusive pricing can be surprisingly confusing.

For example, if a final price is $220 and the tax rate is 10%, simply taking 10% of $220 and subtracting it gives the wrong pre-tax amount. The correct approach is to divide the tax-inclusive price by 1.10, which gives $200.

I m curious how other makers handle calculations like this in their own products. Do you usually explain the formula to users, or keep the calculation behind the scenes and just show the result?

I m building Calculate Reverse Tax around making this process easier for people who need to work backwards from a tax-inclusive price.

I ve been working on a small calculator project around reverse tax calculations, and one thing I noticed is that tax-inclusive pricing can be surprisingly confusing.

I m curious how other makers handle calculations like this in their own products. Do you usually explain the formula to users, or keep the calculation behind the scenes and just show the result?

I m building Calculate Reverse Tax around making this process easier for people who need to work backwards from a tax-inclusive price.

Reverse Tax Calculator

Calculate the pre-tax price from any tax-inclusive total.

Calculate the pre-tax price from any tax-inclusive total.

Forum Threads

What’s the best way to handle tax-inclusive prices in a calculator?

Forum Threads

What’s the best way to handle tax-inclusive prices in a calculator?