Sales Tax Calculator
Sales tax calculator: enter a price and tax rate to get the tax amount and the total price with tax. Works for any state or local sales tax rate.
Formula
Tax = price × rate ; Total = price + tax
Use it from the API
curl "https://moltcalc.com/api/calc/sales-tax?amount=100&rate=8.25"
See the API docs for every endpoint and the input schema.
FAQ
How do I calculate sales tax?+
Multiply the price by the tax rate as a decimal. At an 8.25% rate, a $100 item carries $8.25 in tax, for a total of $108.25.
Why do sales tax rates differ so much?+
In the US the rate is set by state, county and city governments combined, so the total varies by location. Enter the combined rate that applies where you are buying.
Does this work for VAT or GST?+
Yes, the math is the same: price times rate gives the tax, and adding it to the price gives the total. Just enter your VAT or GST percentage as the rate.
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