finance calculator
Calculate sales tax and final purchase price.
Return when checking local rates, purchase amounts, or quick checkout estimates.
Final price
$135.31
Formula
Final price = Pre-tax amount x (1 + tax rate)Sales tax is calculated as a percentage of the pre-tax purchase price and then added to the total.
Step by step
Example
A $125 purchase with 8.25% sales tax has a final price of about $135.31.
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Summary
Final price
$135.31
Pre-tax price plus sales tax.
Sales tax
$10.31
8.25% tax rate assumption.
Pre-tax amount
$125.00
Original purchase amount before tax.
Tax rate
8.25%
Editable combined local rate.
D3 visualization
Separate the original purchase amount from the added sales tax.
D3 visualization
Compare pre-tax amount, tax amount, and final price.
Guide
The sales tax calculator estimates the tax amount and final checkout price from a pre-tax amount and sales tax rate.
It is useful for shopping, invoices, estimates, budgeting, and quick price checks before checkout.
Enter the pre-tax amount and tax rate. The calculator shows final price, tax amount, and original pre-tax amount.
Use the local combined rate when state, county, city, or district taxes all apply.
Sales tax equals pre-tax amount times tax rate. Final price equals pre-tax amount plus the calculated tax amount.
Actual checkout totals can vary because exemptions, shipping, discounts, and local rules may apply.
Pre-tax amount
The purchase price before tax is added.
Tax amount
The calculated sales tax on the purchase.
Final price
Pre-tax amount plus sales tax.
Enter the combined local rate if state, city, county, or district rates apply.
Yes. Some items or locations may have zero sales tax.
Apply discounts to the pre-tax amount first, then enter the discounted amount.