Shopping
Sales Tax Calculator
The sales tax calculator helps shoppers and small businesses estimate taxes on purchases. It is especially useful when comparing final checkout prices across locations and categories.
taxcheckoutretailsubtotal
Interactive calculator
Enter your scenario
Total with tax
$86.60
Tax amount
$6.60
Subtotal
$80.00
Results update as you type so visitors can quickly compare scenarios and move into related calculators without friction.
How to use
Simple steps for accurate inputs
Step 1
Enter the pre-tax subtotal.
Step 2
Add the applicable sales tax rate for your location or product category.
Step 3
Review the tax amount and the final total due.
Formula and method
Sales tax formula
Tax amount = subtotal × tax rate. Final total = subtotal + tax amount.
Frequently asked questions
Can local taxes make the rate different?
Yes. State, county, city, and special district taxes can combine to produce different effective tax rates.
Does this support VAT?
This calculator is written around additive sales tax, but the same structure can help estimate VAT when you know the rate and whether the price is before tax.
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