Sales Tax Calculator

The Ultimate Sales Tax Calculator

Whether you're a shopper budgeting for a big purchase, a business owner reconciling receipts, or a traveler navigating different tax jurisdictions, this Sales Tax Calculator gives you complete control. Unlike basic calculators, it separates state and local taxes, supports multiple items, and can reverse‑calculate the pre‑tax price from a total. With a built‑in lookup of average combined rates for all 50 states, you'll get accurate estimates in seconds.

Sales tax in the United States is complex: 45 states plus DC impose statewide sales taxes, and thousands of local jurisdictions add their own. The combined rate can range from 0% to over 10%. This calculator lets you enter state and local rates separately, or simply pick your state from the dropdown to populate the average combined rate. For precise planning, always verify your exact local rate.

How to Use the Multi‑Item Feature

Switch to "Multiple Items" mode and add as many item prices as you need. The calculator sums the subtotal and applies the state and local tax rates to give you a grand total. This is perfect for:

• Grocery or retail shopping trips with several items
• Business expense reports with multiple receipts
• Estimating total cost for a group purchase

Each item's price is assumed to be before tax. The tax is calculated on the total subtotal, which matches how most retailers compute tax (since tax is applied to the total sale, not per item).

2025 Average Combined Sales Tax Rates by State

The table below shows approximate combined state and average local rates for quick reference. These are updated annually by the Tax Foundation.

Use the dropdown in the calculator to automatically load the rate for your state, then adjust the local rate if needed.

Reverse Sales Tax Calculation

When you have a total amount that already includes tax, switch to "Reverse" mode. Enter the total and the tax rates. The calculator will show the original pre‑tax price, along with the state and local tax portions. This is essential for:

• Separating tax from revenue in bookkeeping
• Verifying that you weren't overcharged
• Determining the actual cost of an item when only the final price is known