💰 Sales Tax Calculator

Sales tax is calculated by multiplying the item price by the sales tax rate. For example, if an item costs $100 and the tax rate is 8.25%, the sales tax would be $100 × 8.25% = $8.25, making the total $108.25.

"Add Tax" mode calculates the tax amount and total price when you know the pre-tax price. "Remove Tax" mode calculates the pre-tax price and tax amount when you know the total price including tax.

No, five states do not have statewide sales tax: Alaska, Delaware, Montana, New Hampshire, and Oregon. However, some local jurisdictions in these states may still impose local sales taxes.

Sales tax rates vary because they combine state, county, city, and special district taxes. Each jurisdiction can set its own rates within legal limits, resulting in different total rates even within the same state.

ZIP codes are not reliable for determining sales tax rates because they were designed for mail delivery, not tax purposes. Tax jurisdictions and ZIP code boundaries often don't align, so using a complete street address is more accurate.

Common exemptions include prescription medications, groceries (in some states), clothing (in some states), and items purchased for resale. Exemptions vary significantly by state.

Sales tax rates can change quarterly, annually, or whenever local governments pass new legislation. It's important to use current rates for accurate calculations.

It depends on where you have "nexus" (a significant business presence). You must collect sales tax in states where you have physical nexus (offices, warehouses, employees) or meet economic nexus thresholds (sales volume/transaction count).