Sales Tax Calculator

Accurate Sales Tax Calculations in Seconds

Whether you are a small business owner pricing inventory or a shopper budgeting for a large purchase, calculating sales tax manually is tedious and error-prone. This Sales Tax Calculator solves that problem. It serves as a comprehensive financial utility that handles standard tax computation, total price estimation, and even "reverse" tax calculations.

Unlike basic calculators, this tool allows you to work backward. If you know the final receipt total but need to find the pre-tax price for your accounting records, simply use the "Remove Tax" mode. With built-in presets for major US states and customizable rate inputs, you get 100% accurate financial data instantly.

How to Use the Sales Tax Calculator

1. Select Mode: Choose "Calculate Tax Amount" to see the tax cost, "Calculate Total Price" for the final bill, "Remove Tax" to find the original price, or "Find Tax Rate" to analyze the percentage charged.
2. Enter Data: Input your known values (Price, Tax Rate, or Total Price). The form automatically adjusts to show only the fields you need.
3. Use Presets: Don't know the rate? Select a state from the dropdown menu to auto-fill the current standard tax rate.
4. Get Results: Click "Calculate Tax" to see a detailed breakdown, including the math used to derive the answer.

Frequently Asked Questions

How to calculate sales tax amount?

Multiply the net price of the item by the tax rate (expressed as a decimal). For example, $50.00 × 0.06 (6%) = $3.00 tax. Our tool automates this formula: Tax = Price × (Rate / 100).

How to find total price after tax?

Add the calculated tax amount to the original listing price. Alternatively, multiply the original price by 1 + (Tax Rate / 100). For an 8% tax on $100, the math is $100 × 1.08 = $108.00.

How to remove sales tax from a total?

To find the pre-tax price, divide the total receipt amount by 1 + (Tax Rate / 100). If you paid $107.00 total with 7% tax, divide $107.00 by 1.07 to get the original $100.00 price.

What states have no sales tax?

At the state level, Alaska, Delaware, Montana, New Hampshire, and Oregon do not collect sales tax. However, local municipalities within these states (especially Alaska) may still impose their own local taxes.

How to calculate tax rate from total price?

Subtract the original price from the total price to find the tax amount. Then, divide that tax amount by the original price and multiply by 100. Formula: ((Total - Original) / Original) × 100.