The item price before tax.
Combined state + local tax rate (e.g. Texas = 8.25%, California = 7.25%–10.75%).
Tax Amount
$8.25
Dollar amount of tax added to the price.
Total Price (with Tax)
$108.25
Final price you pay including tax.
Tax as % of Total
7.62%
Tax as a share of the total price paid.
Estimate only — not financial advice; lender terms, fees, and taxes vary. Read the full disclaimer ↓
Multiply the pre-tax price by the tax rate (as a decimal) to get the tax amount.
You buy a $100 item in Texas, which has an 8.25% combined sales tax rate.
Pre-Tax Price
$100.00
Tax Rate
8.25%
Tax Amount
$8.25
Total Price
$108.25
Tax % of Total
7.62%
You pay $8.25 in tax, bringing the total to $108.25. The 8.25% tax rate on the pre-tax price equals 7.62% of the final price.
In the US there is no national sales tax — it is set by states, and then counties and cities stack their own rates on top. The figure to enter here is the combined rate for the exact address where the sale happens, which is why two stores a few miles apart can charge different totals on the same item.
The spread is wide: a handful of states levy no sales tax at all, while combined rates elsewhere top 10%. On a small purchase that is noise; on a car or an appliance it is real money, so it is worth knowing the local rate before you buy.
US sales tax is added to a pre-tax sticker price: tax is price × rate, and you pay price + tax. That is "tax-exclusive" pricing. VAT and GST in many countries are usually quoted "tax-inclusive", with the tax already baked into the shelf price.
If you have only the tax-inclusive total and want the original price, divide by one plus the rate — $108.25 ÷ 1.0825 = $100. That reverse step is handy for separating the tax out of a receipt or an all-in quote.
Sales tax is not uniform across goods. Many states exempt or reduce the rate on necessities such as groceries, prescription drugs, and sometimes clothing, while taxing most other retail purchases at the full rate.
This calculator applies one flat rate to whatever price you enter, so for a basket that mixes taxed and exempt items you would calculate the taxed portion separately. Watch, too, for prices that already include tax — adding tax again overstates the total.
The tool also shows the tax as a share of the total you pay. Because that divides the tax by the larger tax-inclusive amount rather than the pre-tax price, it always reads a little below the headline rate — an 8.25% rate is about 7.6% of the total. Both numbers are correct; they simply use a different base.
It is a useful reminder that "what percent of my spending was tax" and "what is the tax rate" are two different questions with two different answers.
This is a single flat-rate calculator. It does not break the rate into state, county, and city components, apply item-level exemptions, or convert VAT-inclusive pricing automatically, and rates and exemption rules change by location and product category.
For anything that matters — a large purchase, a business expense, or a filing — confirm the current combined rate with your state or local tax authority.
US state sales tax rates range from 0% (Oregon, Montana, New Hampshire, Delaware, Alaska) to 7.25% base rate (California). Combined state + local rates can exceed 10% in some areas. Tennessee and Louisiana often have the highest combined rates. Check your state revenue department for the exact current rate.
To reverse-calculate: divide the total price by (1 + tax rate). For example, a $108.25 total at 8.25% → $108.25 ÷ 1.0825 = $100. This gives you the original pre-tax price.
US sales tax is added at the point of sale (consumers see pre-tax prices). VAT (used in Europe and many other countries) is included in the displayed price and collected at each stage of production. For the consumer, the result is similar — you pay a percentage on top of the base price.
The tax rate is applied to the pre-tax price, but "tax as % of total" divides the tax by the larger tax-inclusive total. At an 8.25% rate, $8.25 of tax on a $108.25 total is about 7.62% of the total. Both figures are correct — they just use a different base.
It depends on the jurisdiction and how the charge is structured. Some states tax shipping when it is part of a taxable sale; others exempt separately stated delivery charges. This calculator applies the rate only to the price you enter, so add taxable shipping into that price if your state taxes it.
For a fully exempt item, enter a tax rate of 0% and the total will equal the price. For partially exempt categories or special district rates, enter the effective combined rate that applies to your specific item and location.
Figures on this page are checked against primary, authoritative sources. Links open in a new tab.
Tax disclaimer
Tax rules vary by country, state, tax year, filing status, income type, deductions, and exemptions. This calculator is educational and uses the values you enter. Always verify final tax treatment with official sources or a qualified tax professional.
Built and maintained by Calculator Matters, an independent calculator project. Method checked against published formulas and primary sources · Last reviewed 5 June 2026 · How we calculate · Found an error? corrections@calculatormatters.com