Sales Tax Calculator
Calculate sales tax, find total prices with tax, or reverse-calculate pre-tax amounts
Calculate the total price including sales tax.
Add Tax Formula
Extract Tax Formula
How to Use This Sales Tax Calculator
- Choose whether to add tax to a pre-tax price or extract tax from a total
- Enter the price amount (net price or gross total)
- Input the sales tax rate for your location
- Use quick-select buttons for common rates or check the state rates tab
- Click Calculate to see the breakdown
Example: A $100 item with 8.25% sales tax costs $108.25 total. The tax amount is $8.25. To find the pre-tax price from $108.25, divide by 1.0825 to get $100.
Tip: Remember that combined state and local rates can exceed 10% in some jurisdictions. Always check your specific location's total rate.
Why Use a Sales Tax Calculator?
Sales tax calculations are essential for accurate pricing, budgeting, and business accounting.
- Calculate total purchase cost including tax
- Extract pre-tax price from a tax-inclusive total
- Verify tax charged on receipts
- Budget for large purchases by estimating tax
- Compare effective prices between states with different rates
- Calculate sales tax for business invoicing and accounting
Understanding Your Results
Clear breakdown of net price, tax amount, and gross total for any transaction.
| Result | Meaning | Action |
|---|---|---|
| Tax rate 0% | Tax-free items or tax-free state | Verify the item qualifies for exemption in your state |
| Tax rate 5-8% | Low to moderate tax rate | Factor into budgeting, especially for major purchases |
| Tax rate 9%+ | High combined rate (state + local) | Consider this when comparing prices across jurisdictions |
Meaning: Tax-free items or tax-free state
Action: Verify the item qualifies for exemption in your state
Meaning: Low to moderate tax rate
Action: Factor into budgeting, especially for major purchases
Meaning: High combined rate (state + local)
Action: Consider this when comparing prices across jurisdictions
Note: Five US states have no state sales tax: Alaska, Delaware, Montana, New Hampshire, and Oregon. However, Alaska allows local sales taxes.
About Sales Tax Calculator
Formula
Total = Price × (1 + Tax Rate) OR Pre-Tax = Total / (1 + Tax Rate) To add tax, multiply by (1 + rate). To extract tax, divide by the same factor. The tax amount is the difference between total and pre-tax price.
Current Standards: Highest combined rates (2026): Tacoma, WA (10.35%), Chicago, IL (10.25%), portions of Louisiana (11.45%). Average combined rate is approximately 7.5%.
Frequently Asked Questions
Why is my local tax rate different from the state rate?
Your total sales tax combines state, county, city, and sometimes special district taxes. California's 7.25% state rate becomes 9.5% or higher in most cities after local additions. Always use your specific location's combined rate for accurate calculations.
What items are exempt from sales tax?
Exemptions vary by state. Common exemptions include groceries (unprepared food) in about 30 states, prescription medications (most states), and clothing (Pennsylvania, New Jersey, some others). Some states have sales tax holidays for school supplies, energy-efficient appliances, or emergency preparedness items.
Do I pay sales tax on online purchases?
Yes, following the 2018 Wayfair Supreme Court decision, most online retailers collect sales tax based on your shipping address. If tax isn't collected, you technically owe 'use tax' directly to your state, though enforcement on individual purchases is limited.
How do I calculate tax on a discounted item?
Sales tax is calculated on the actual price paid, not the original price. If a $100 item is discounted to $75, tax applies to $75. Manufacturer coupons may be treated differently than store coupons in some states—the item's 'value' for tax purposes varies by state rules.
What's the difference between sales tax and VAT?
Sales tax is collected only at final sale to consumers. VAT (Value Added Tax) is collected at each stage of production and distribution. VAT is typically included in displayed prices, while US sales tax is added at checkout. The US is one of few developed nations using sales tax rather than VAT.