Goodfolk Business Utilities
Sales Tax Calculator
Calculate sales tax, pre-tax price, final total, and tax amount from a tax rate.
Use this to estimate tax on products, invoices, retail purchases, or to back out the pre-tax price from a tax-included total.
Sales tax estimate
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Frequently Asked Questions
What is sales tax?
Sales tax is a percentage-based tax applied to the sale of goods and services. It is typically collected by the seller and passed on to the government.
How do I calculate sales tax?
To calculate sales tax, multiply the pre-tax price by the tax rate (as a decimal). For example, $100 with an 8% tax rate would be $100 x 0.08 = $8 in sales tax.
What does it mean to back out sales tax?
Backing out sales tax means calculating the pre-tax price from a total that already includes tax. This is done by dividing the total by (1 + tax rate as a decimal). For example, $108 with an 8% tax rate would be $108 / 1.08 ≈ $100 pre-tax price.