Sales Tax Calculator
A sales tax calculator helps you calculate the sales tax on purchases and determine the total cost including tax. Use our free sales tax calculator to instantly calculate tax amounts, total purchase prices, and compare tax rates across different states. This tool accounts for varying state and local tax rates, making it perfect for shopping decisions, business pricing, and budget calculations. Calculate sales tax accurately to understand the true cost of purchases and plan your expenses effectively.
Free • Shopping • Business pricing
How Sales Tax Calculation Works
Sales Tax Formula
Total Cost = Price × (1 + Tax Rate)
Sales Tax: Price × Tax Rate
Total Price: Original Price + Sales Tax
State Rates: Range from 0% (Delaware) to 7.25% (California)
Local Taxes: Additional city/county taxes may apply
Example Sales Tax Calculation
A $100 purchase in California with 7.25% state tax plus 2% local tax results in $9.25 total tax. The final purchase price is $109.25. The same $100 purchase in Oregon (0% tax) costs only $100.
This shows how sales tax varies significantly by location.
Benefits of Sales Tax Calculator
Frequently Asked Questions
Which states have no sales tax?
Five states have no statewide sales tax: Delaware, Montana, New Hampshire, Oregon, and Alaska (though local taxes may apply in some areas).
Do online purchases include sales tax?
Yes, online retailers must collect sales tax in states where they have nexus (physical presence or economic activity), following Supreme Court rulings.
What items are exempt from sales tax?
Common exemptions include groceries, prescription drugs, and sometimes clothing. Exemptions vary by state and local jurisdiction.
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Get accurate sales tax calculations for any purchase and understand the true cost of your shopping.
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