$100.00
$7.25
$107.25
$7.25
$100.00
$7.25
$107.25
$7.25
The Sales Tax Calculator instantly computes the tax amount and total price for any purchase based on the applicable sales tax rate. Sales tax is a consumption tax imposed by state and local governments on the sale of goods and certain services. Unlike income tax, sales tax is paid at the point of purchase and is generally regressive — taking a larger percentage of income from lower-income consumers.
Sales tax rates in the United States vary significantly by location. As of 2024, 45 states plus Washington D.C. impose a statewide sales tax, with rates ranging from 2.9% (Colorado) to 7.25% (California). When local taxes are added, combined rates can exceed 11% in some jurisdictions. Five states — Alaska, Delaware, Montana, New Hampshire, and Oregon — have no statewide sales tax, though Alaska allows local jurisdictions to impose their own.
The formula is straightforward: Sales Tax = Price x Tax Rate, and Total = Price + Sales Tax. However, real-world application can be complex. Many states exempt essential items like groceries, prescription medications, and clothing from sales tax. Some items have reduced rates, and tax holidays (back-to-school, disaster preparedness) temporarily suspend tax on qualifying purchases.
For businesses, accurate sales tax calculation is critical for compliance. The South Dakota v. Wayfair (2018) Supreme Court decision expanded sales tax obligations to online sellers, creating nexus based on economic activity rather than physical presence. Businesses selling across state lines must now navigate a patchwork of rates and rules.
This calculator supports multiple quantities for calculating total tax on bulk purchases. Enter the pre-tax price per item, your local tax rate, and quantity to see both the per-item and total tax amounts.
The formula: Sales Tax = Price x (Tax Rate / 100). Total = Price + Sales Tax. For multiple items: Subtotal = Price x Quantity, then apply tax rate to the subtotal. This calculator assumes the entered rate is the combined state + local rate.
The tax amount is what the government collects. The total is what you actually pay. To compare prices across locations with different tax rates, always compare the total including tax. A $100 item costs $107.25 in California (7.25%) but only $100 in Oregon (0%).
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A $600 laptop at 8.25% sales tax costs $649.49 total.
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10 items at $24.99 each with 6.5% tax.
Sales tax is a consumption tax charged on the sale of goods and some services. It's collected by the seller at the point of sale and remitted to state and/or local government.
Five states have no statewide sales tax: Alaska, Delaware, Montana, New Hampshire, and Oregon. However, Alaska allows local jurisdictions to impose sales taxes.
California has the highest statewide rate at 7.25%. Combined with local taxes, the highest total rates exceed 10% — Louisiana's combined rate can reach 11.45% in some parishes.
It varies by state. Most states exempt unprepared food (groceries) from sales tax, but some (Alabama, Mississippi, South Dakota) tax groceries at the full rate. Others apply a reduced rate.
A period when certain items (typically school supplies, clothing, or disaster preparedness items) are exempt from sales tax. About 20 states offer these, usually in late summer for back-to-school shopping.
Yes, in most cases since the 2018 Wayfair decision. Online sellers with economic nexus (typically $100,000 in sales or 200 transactions in a state) must collect and remit that state's sales tax.
Use tax is owed when you purchase taxable items without paying sales tax (e.g., from an out-of-state seller who doesn't collect tax). It's technically owed by the buyer, though enforcement is limited for individual consumers.
Check your state's department of revenue website, or search for your ZIP code on sites like the Tax Foundation. Rates can vary within a city depending on special taxing districts.
In the U.S., sales tax is almost always added at checkout (exclusive). In most other countries, VAT or sales tax is included in the displayed price (inclusive). This calculator uses the U.S. convention.
Businesses can deduct sales tax paid on business expenses. Individual taxpayers can choose to deduct either state income tax OR state sales tax (not both) as an itemized deduction, subject to the $10,000 SALT cap.
Roboculator Team
The Roboculator Team explains calculations, planning tools, and practical formulas in clear language for real-life situations.
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