Sales Tax Formulas
Add Tax: Total = Amount × (1 + TaxRate); Remove Tax: PreTax = Total ÷ (1 + TaxRate)
Useful for invoices, receipts, and marketplace pricing where totals may already include tax.
Business & Finance
Sales Tax Calculator
Add tax to a price or reverse tax from a tax-inclusive total.
Tax Inputs
$
%
Final Total
—
with tax
Tax Amount
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Pre-Tax Amount
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