Sales Tax Rate Calculator

Enter the original price and total paid to calculate the implied sales tax amount and rate.

Before-tax price

Total paid after tax

—Implied tax rate

—Tax amount

—Total multiplier

—Price difference

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Start with the broad calculator that matches the decision, then move to a specialist only when the loan structure, cash flow, tax treatment, debt strategy or savings goal genuinely changes.

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An implied rate is not always a statutory rate

Fees, discounts, tips, shipping or other charges can make the percentage implied by two totals differ from the legal tax rate.

How to use the Sales Tax Rate Calculator

Enter the known price before tax and the final amount after tax. The tool divides the difference by the before-tax price to calculate the implied percentage.

What the result means

The result is the effective tax percentage implied by the two amounts.