Sales Tax Calculator

Calculate sales tax amount and total price.

Frequently Asked Questions

How is sales tax calculated?

Sales tax is calculated by multiplying the pre-tax price by the tax rate. A $50 item at 8.5% tax: $50 x 0.085 = $4.25 tax, total $54.25. The calculator handles this instantly and shows the breakdown of pre-tax price, tax amount, and total price including tax.

Can I calculate the pre-tax price from a total?

Yes — use the reverse calculator. If you paid $54.25 total at 8.5% tax: pre-tax price = $54.25 / 1.085 = $50.00, tax amount = $4.25. This is useful for expense reports, resale calculations, or figuring out the base price when you only know the total.

What sales tax rate should I use?

Sales tax rates vary by state, county, and city. State rates range from 0% (Oregon, Montana, Delaware) to 7.25% (California). Local taxes can add 1-5% on top. Your total rate is the sum of state + county + city rates. Check your local rate for the most accurate calculation.

Does this work for VAT and GST?

Yes — the math is the same for any percentage-based consumption tax. Enter your VAT rate (e.g., 20% for UK) or GST rate (e.g., 10% for Australia) and the calculator works identically. The reverse calculation is especially useful for VAT-inclusive prices common in Europe.

Can I calculate tax on multiple items?

Yes — enter multiple items with their individual prices and the calculator sums them before applying the tax rate. Some items may be tax-exempt (groceries, medicine) in certain states — enter only taxable items for an accurate calculation of the tax-applicable portion.