Calculate sales tax, extract tax from totals, and manage multi-item tax breakdowns. Includes US state tax rates.
What is Sales Tax Calculator?
A comprehensive sales tax calculator with two modes: Add Tax to a pre-tax amount or Extract Tax from a total (reverse calculation). Supports multiple items with individual tax breakdowns, a tax rate slider with common US presets, and a quick-reference grid of all US state sales tax rates. Results animate in real-time.
How to Use
Choose "Add Tax" to calculate total with tax, or "Extract Tax" to find the tax portion of an amount
Enter an amount — use "Add Item" for multiple items
Set the tax rate with the slider, presets, or type a custom rate
Click any US state in the reference grid to use its tax rate
Frequently Asked Questions
What is the "Extract Tax" mode?
It reverse-calculates the pre-tax amount and tax portion from a total that already includes tax.
Are the state tax rates accurate?
We show base state rates. Local city/county taxes may add additional tax on top.
Can I calculate tax on multiple items?
Yes! Click "Add Item" to add multiple items. Each gets its own tax breakdown, plus a grand total.
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