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Sales Tax Calculator 2025

Add sales tax to any price or reverse-calculate the tax from a receipt total — for all 50 states + DC, with combined state and local rates.

All 50 States + DC
Reverse / Extract Tax
Export to CSV
Free & Private

How the Sales Tax Calculator Works

This calculator turns two numbers — an amount and a state — into the figures you actually need: the sales tax owed and the final total. Pick a state and the tool loads that state's average combined rate, which is the state base rate plus the population-weighted average of local city, county, and district add-ons. In "Add tax to amount" mode, you enter a pre-tax price and the calculator multiplies it by the rate to show the tax and the grand total. In "Extract tax from total" mode — the reverse sales tax calculation — you enter a tax-inclusive total from a receipt and the tool works backward to recover the original price and the tax portion.

The result panel breaks out the state rate, the average local rate, and the combined rate so you understand where the number comes from, and it flags whether groceries and clothing are taxed in that state. Because sales tax rules vary so much by location and product category, the calculator uses each state's representative average rate for a realistic estimate; for an exact figure you would use the specific city or ZIP-code rate. Defaults reflect 2025 rates, so the page is useful the moment it loads — just change the amount and state to your own.

Who Benefits Most From This Calculator

  • Shoppers comparing prices across states who want to know the true out-the-door cost of a purchase.
  • Small-business owners and freelancers separating tax from tax-inclusive receipts for bookkeeping and expense reports.
  • Online sellers estimating what tax buyers in different states will see at checkout.
  • Travelers and cross-border shoppers weighing whether a no-sales-tax state is worth the trip for a big purchase.
  • Anyone budgeting a large buy — a car, appliance, or electronics — where a few percent of tax is real money.

Who Should Look Elsewhere

This tool estimates consumer sales tax using each state's average combined rate. If you need the exact rate for a specific city or ZIP code, use your state department of revenue's rate lookup, because local rates vary block to block. If you're a business filing sales tax returns, you need precise jurisdiction-level rates and product taxability rules — dedicated tax-compliance software is the right tool. And if a purchase falls into an exempt or reduced-rate category (groceries, prescription drugs, clothing under a price cap), the actual tax may be $0 or lower than the combined rate this calculator applies. Treat the output as a close estimate for planning, not a substitute for an official invoice or a tax professional.

Sales Tax Implications You Should Understand

State vs. local layering. The rate you pay is the state rate plus local add-ons. Two towns in the same state can charge different totals on the identical item, which is why the "combined rate" — not the headline state rate — is what matters at checkout.

Use tax. If you buy something without paying sales tax (online from a non-collecting seller, or in a no-tax state) and bring it into your home state, you legally owe use tax at your state's rate. Most state income tax returns include a line to self-report it, and states actively pursue use tax on registered big-ticket items like vehicles and boats.

Economic nexus and the Wayfair decision. Since South Dakota v. Wayfair (2018), states can require out-of-state online sellers to collect sales tax once they cross an economic-nexus threshold (commonly $100,000 in sales or 200 transactions). That's why nearly every online order now shows sales tax based on your shipping address, and why marketplace facilitator laws make Amazon, eBay, and Etsy collect on behalf of third-party sellers.

Exemptions. Most states exempt unprepared groceries and prescription drugs; several exempt clothing entirely or below a price cap. Prepared food and restaurant meals are almost always taxable. Always check category rules — they can turn a taxable purchase into a tax-free one. Consult a tax professional for business filings.

Tips, Tricks & Things to Watch

  • Know the NOMAD states — New Hampshire, Oregon, Montana, Alaska, and Delaware have no statewide sales tax (Alaska allows local taxes). A large purchase there can save real money, but watch for use tax back home.
  • Use grocery and clothing exemptions — in many states food and clothing are tax-free or reduced, so the combined rate overstates the tax on those items.
  • Time big buys for sales tax holidays — about 17 states suspend tax on clothing, school supplies, or emergency gear for a weekend each year; check date and price-cap rules first.
  • Use reverse calculation for receipts — switch to "Extract tax from total" to split a tax-inclusive amount into price and tax for expense reports and bookkeeping.
  • Check the local rate, not just the state rate — in states like Colorado and Louisiana, local taxes can more than double the headline state rate.
  • Remember use tax on online and out-of-state buys — if no sales tax was collected, you may still owe your state.

Sales Tax Formula (2025)

How sales tax is added to a price — and how to reverse it to extract the tax from a tax-inclusive total.

Combined Rate = State Rate + Local Rate

Example:

California: 7.25% state + 1.60% average local

7.25% + 1.60%
= 8.85% combined rate

Variables:

State Rate - Base rate set by the state
Local Rate - City + county + district add-ons (avg.)

Total = Price × (1 + rate) Tax = Price × rate

Example:

$100 item at 8.85% combined rate

100 × (1 + 0.0885) = 100 + 8.85
= $8.85 tax → $108.85 total

Variables:

Price - Pre-tax price of the item
rate - Combined sales tax rate (as a decimal)

Net = Total ÷ (1 + rate) Tax = Total − Net

Example:

$108.85 receipt total at 8.85%

108.85 ÷ 1.0885 = 100.00
= $100.00 net → $8.85 was tax

Variables:

Total - Tax-inclusive amount
Net - Recovered pre-tax price

These formulas provide the mathematical foundation for the calculations. Actual results may vary based on rounding, compounding frequency, and specific lender policies.

How We Calculate & Keep This Accurate

Sales tax is computed as Total = Price × (1 + combined rate), and reverse calculation as Net = Total ÷ (1 + combined rate). Each state's combined rate is its base state rate plus the population-weighted average of local city, county, and special-district rates, reflecting 2025 figures.

We use representative average rates, so results are estimates for planning. Actual tax depends on the exact city or ZIP-code rate and on product-category rules (groceries, clothing, prescription drugs may be exempt or reduced). For official amounts, consult your state department of revenue.

Data & Freshness

Figures reflect 2025 tax-year data.

Last updated June 8, 2026 · Maintained by the Financial Calculator editorial team.

Sales Tax Calculator — Frequently Asked Questions

Answers to the most common questions about calculating sales tax, reverse sales tax, no-tax states, exemptions, use tax, and online purchases.

How do I calculate sales tax?

To calculate sales tax, multiply the pre-tax price of an item by the combined sales tax rate that applies where the sale takes place, then add the result to the price. The combined rate is the state rate plus any city, county, or special-district local rates. For example, if you buy a $100 item in a location with an 8.85% combined rate, the tax is $100 × 0.0885 = $8.85, and your total is $108.85. The formula is Total = Price × (1 + rate). Most US states allow local governments to add their own sales tax on top of the state rate, so the rate at the register can be higher than the headline state rate — sometimes by several percentage points. Sales tax is destination-based in most states, meaning the rate is set by where the buyer takes possession of the goods, not where the seller is located. This calculator uses each state's average combined rate so you get a realistic estimate; for an exact figure, check the specific rate for the city or ZIP code where the purchase occurs.

Which states have no sales tax?

Five states have no statewide sales tax, remembered by the acronym NOMAD: New Hampshire, Oregon, Montana, Alaska, and Delaware. In four of these — New Hampshire, Oregon, Montana, and Delaware — you generally pay no sales tax at all on ordinary retail purchases. Alaska is the exception: it has no state-level sales tax, but many Alaskan boroughs and municipalities levy their own local sales taxes, so the average combined rate there is around 1.82%. The other four NOMAD states fund their governments through other means — Oregon and Delaware rely more heavily on income taxes, while Montana and New Hampshire keep overall taxes low and lean on other revenue. Shoppers near these states sometimes cross borders for large purchases, but note that your home state may charge "use tax" on goods you bring back. These five states are highlighted throughout this tool; selecting any of them in the calculator returns $0.00 in tax (except Alaska, where local rates may apply).

What's the difference between state and local sales tax?

State sales tax is the base rate set by the state legislature and applied uniformly across the entire state. Local sales tax is an additional rate that cities, counties, and special districts (such as transit authorities or stadium districts) can layer on top of the state rate. The combined rate — what you actually pay at checkout — is the sum of the two. The gap between state and local rates varies enormously. Some states, like Connecticut, Indiana, and Maryland, have no local sales taxes at all, so the state rate is the combined rate everywhere. Others, like Colorado and Louisiana, have a low state rate but very high local rates, so the combined rate in some cities is more than double the state rate. Louisiana's state rate is 5% but its average combined rate exceeds 10% because of aggressive local taxation. This is why two cities in the same state can charge noticeably different totals on the identical item. This calculator uses the population-weighted average local rate for each state, which gives a representative combined figure, but your exact local rate depends on the specific jurisdiction where you shop.

How does reverse sales tax work?

Reverse sales tax calculation works backward from a tax-included total to figure out how much of that total was the original price and how much was sales tax. This is useful when you have a receipt showing only the final amount and you need to separate the pre-tax price for expense reports, bookkeeping, or VAT-style accounting. The formula is Net Price = Total ÷ (1 + rate), and Tax = Total − Net Price. For example, if a receipt shows $108.85 and the combined rate was 8.85%, the net price is $108.85 ÷ 1.0885 = $100.00, meaning $8.85 was sales tax. Switch this calculator to "Extract tax from total" mode to do exactly this. Reverse calculation is essential for businesses that quote tax-inclusive prices, for travelers reconciling receipts, and for anyone who needs to know the taxable base of a purchase. Be sure to use the correct combined rate for the location where the purchase was made — using the wrong rate will give an inaccurate split, even though the total stays the same.

Are groceries and clothing taxed?

It depends entirely on the state. Most states exempt unprepared groceries (food bought to cook at home) from sales tax, viewing food as a necessity, but a handful still tax groceries — sometimes at a reduced rate. States like Alabama, Mississippi, South Dakota, and Hawaii tax groceries, while the majority exempt them. Prepared food (restaurant meals, hot deli items) is almost always taxable even where groceries are exempt. Clothing is taxed in most states, but a few carve out exemptions: Minnesota, New Jersey, and Pennsylvania exempt most clothing entirely; New York exempts clothing items under $110; Massachusetts exempts clothing under $175; and Rhode Island exempts clothing up to $250 per item. These exemptions exist because food and clothing are considered essentials, and taxing them is regressive — it takes a larger share of income from lower earners. This calculator shows, for each state, whether groceries and clothing are taxed, but it applies the general combined rate to your amount; for exempt categories, the actual tax may be $0 or a reduced rate, so check the specific rules for your purchase.

Do I owe sales tax on online purchases?

Yes, in almost all cases. Since the 2018 Supreme Court decision in South Dakota v. Wayfair, states can require out-of-state online sellers to collect sales tax even if the seller has no physical presence in the buyer's state. This overturned the older "physical presence" rule and established "economic nexus" — once a seller exceeds a threshold of sales or transactions in a state (commonly $100,000 in sales or 200 transactions per year), they must register and collect that state's sales tax. As a result, major online retailers now collect sales tax on virtually every order based on your shipping address. If an online seller does not collect sales tax — for instance, a very small out-of-state vendor below the nexus threshold — you technically owe "use tax" to your own state on that purchase, and you're expected to report it on your state income tax return. Marketplaces like Amazon, eBay, and Etsy generally collect and remit sales tax on behalf of their third-party sellers under marketplace facilitator laws, so most online shoppers see sales tax applied automatically at checkout based on where the item ships.

What is use tax?

Use tax is the complement to sales tax: it applies to goods you buy without paying sales tax but then use, store, or consume in your home state. It exists to close the loophole that would otherwise let people avoid sales tax by buying from out-of-state or no-sales-tax sellers. The use tax rate equals your state's sales tax rate. The most common scenario is buying online from a seller who didn't collect sales tax, or driving to a no-sales-tax state like Oregon or Delaware to make a large purchase and bringing it home. Legally, you owe use tax on those items, and most states include a line on the annual income tax return for self-reporting use tax. Enforcement is historically weak for everyday consumer purchases, but states do audit businesses rigorously for use tax on equipment and supplies, and they pursue use tax on big-ticket items like vehicles, boats, and aircraft that must be registered. Since the Wayfair decision expanded sales tax collection by online sellers, consumer use tax liability has shrunk — most online purchases now have sales tax collected at checkout — but it still applies to purchases from sellers who don't collect.

What are sales tax holidays?

Sales tax holidays are temporary periods, usually a weekend or a week, during which a state suspends sales tax on certain categories of goods. The most common is the back-to-school holiday in late summer, which exempts clothing, school supplies, and sometimes computers up to specified price caps. Many states also run holidays for hurricane and emergency-preparedness supplies, Energy Star appliances, and firearms or hunting gear. About 17 states hold at least one sales tax holiday each year, including Texas, Florida, Tennessee, and several Southeastern states. The savings can be meaningful on big purchases — a family buying back-to-school clothes and a laptop during a holiday in a state with an 8% combined rate could save dozens of dollars. However, the exemptions come with rules: price caps per item (e.g., clothing under $100), specific eligible categories, and exact date windows that change each year. Critics note that retailers sometimes raise prices during holidays, partially offsetting the savings, and that the holidays cost states revenue while providing limited economic benefit. To use a holiday effectively, check your state's department of revenue for the current year's dates, eligible items, and price limits before you shop.
US Sales Tax Calculator User Reviews

Disclaimer: Results are estimates for planning only and do not constitute tax, legal, lending, or investment advice. Actual paycheck and tax outcomes can vary based on employer settings, local rules, and personal elections. Consult a qualified US tax professional, CFP, or attorney before making financial decisions.