Sales Tax Calculator

This sales tax calculator works both ways. In Add tax mode, enter a net price and the tax rate to get the tax amount and the final price. In Remove tax mode, enter a price that already includes tax and it works out the price before tax and how much of the total was tax.

It works for any percentage-based tax: US state and local sales tax, VAT in the UK and Europe, GST in India, Australia, Canada, Singapore and New Zealand, and consumption tax in Japan. It is useful for shoppers, freelancers writing invoices and small businesses filing tax returns.

How to use the Sales Tax Calculator tool

1. Choose Add tax or Remove tax.
2. Enter the price: before tax to add tax, or the tax-inclusive price to remove it.
3. Enter the tax rate or tap a common rate.
4. Read the net price, the tax amount and the gross price.

Why use ToolOrca Sales Tax Calculator

• Add tax to a net price
• Remove tax from a gross price correctly
• Works for sales tax, VAT and GST
• Quick buttons for common rates
• Formula shown with your numbers
• Any currency symbol

Formulas for adding and removing tax

Add tax: tax = net × rate ÷ 100 and gross = net × (1 + rate ÷ 100). A $100 item with 8.25% sales tax has $8.25 of tax and costs $108.25.

Remove tax: net = gross ÷ (1 + rate ÷ 100). A £120 price that includes 20% VAT has a net price of 120 ÷ 1.2 = £100 and £20 of VAT.

A common mistake is to take the rate off the gross price: 20% of £120 is £24, which is too much, because the VAT was calculated on £100, not on £120.

Common sales tax, VAT and GST rates

US sales tax is set by states and cities, so the combined rate typically ranges from 0% to just over 10%. Standard VAT is 20% in the UK and France, 19% in Germany and 21% in Spain and the Netherlands. GST is 18% for most goods and services in India, 10% in Australia, 15% in New Zealand and 9% in Singapore; Canada’s federal GST is 5%. Rates change, so check your local tax authority before filing.