Add sales tax to a price, or take it out of a price.
Enter an amount and a tax rate.
Use the rate that applies to you. Rates differ by country and by item.
Add tax to a price before tax, or remove it from a price that includes tax.
Type the tax rate that applies, or pick a quick rate.
See the price before tax, the tax and the price with tax.
Divide the price by 1 plus the rate. For a price of 1,180 with 18% tax, 1,180 ÷ 1.18 = 1,000, so the tax is 180.
The one that applies to you. Rates differ by country and by kind of goods, and they change, so check with your tax authority or accountant.
No. It does the arithmetic only.