Calculate the sales tax amount and final total price based on a price and tax rate.
Google AdSense Banner
This area will contain advertisements after approval.
Google AdSense Banner
This area will contain advertisements after approval.
The sales tax formula is: Sales Tax = Price × (Tax Rate ÷ 100). The total price you pay is then the original price plus that tax amount. For example, to calculate sales tax on a 100 purchase at an 8.25% tax rate: sales tax = 100 × (8.25 ÷ 100) = 8.25, for a total price of 108.25.
If you know the final total price and want to find the pre-tax price instead, divide the total by (1 + Tax Rate ÷ 100). For example, a total of 108.25 at 8.25% tax gives a pre-tax price of 108.25 ÷ 1.0825 = 100, this reverse calculation is useful when a receipt only shows the final total.
Applying the tax rate to a price that already includes tax, if your starting number is a post-tax total, use the reverse calculation described above instead of taxing it again.
Using a single tax rate across a whole country when sales tax in many places is actually a combination of state, county and city rates that vary block to block.
Forgetting that some items (like groceries or prescription medicine in many jurisdictions) may be exempt or taxed at a different rate than the general sales tax rate.
Sales tax rates vary by country, state, and sometimes city or county. Check your local government's tax authority website for the exact current rate in your area.
GST and VAT work similarly to sales tax in principle, calculated as a percentage of the price, but rules on what's taxed and how it's applied can differ. Our GST Calculator has a dedicated add/remove mode for GST-inclusive pricing.
Google AdSense Banner
This area will contain advertisements after approval.