Sales Tax Calculator — All 50 US States (2026)
Pick a state, enter a price, and instantly get the tax amount, total price, and effective rate. Works in reverse too — enter a tax-included receipt total to find the original pre-tax price.
| State | Sales Tax | Note |
|---|---|---|
| Oregon | 0% | No sales tax |
| Montana | 0% | No sales tax |
| New Hampshire | 0% | No sales tax |
| Delaware | 0% | No sales tax |
| Alaska | ~1.82% | Local only, no state tax |
How Sales Tax Works in the US
There's no federal sales tax in the US — each state sets its own rate, and in most states, cities and counties tack on more on top of that. That's why a $100 purchase costs different amounts in different places, sometimes even within the same state. A $200 jacket in Chicago costs more in tax than the same jacket purchased in suburban DuPage County — both are in Illinois, but the city adds its own layer.
This calculator uses state-level rates, which include the mandatory statewide local add-on in California, Utah, and Virginia — those apply everywhere in those states and are commonly quoted as part of the "state" rate. If you know your exact city or county rate, drop it into the custom rate field and it will override the dropdown.
Reverse Calculation — Working Backward from a Total
If all you have is a final, tax-included number — a receipt total, an invoice line item, a price that already has tax baked in — check "Amount entered already includes tax" and the calculator works backward to split it into the pre-tax price and the tax itself.
What This Calculator Doesn't Know
It uses general state-level rates, not your specific city or county rate, and it doesn't know about item-level exemptions. Groceries, prescription drugs, and clothing are tax-exempt or taxed at reduced rates in many states, and this tool applies the standard rate across the board. If you're buying groceries in Texas or prescription drugs in California, the number here will run a bit high. For an exact local rate, use the custom field; for exemption details, your state's Department of Revenue website has the specifics.
The Sales Tax Formula
Three formulas cover every sales tax scenario. Knowing them lets you verify any receipt, catch an overcharge at checkout, or estimate costs before you shop.
Worked Example — $350 Purchase in Tennessee
Tennessee has a state rate of 7%. Most major Tennessee cities add local taxes that bring the common combined rate to 9.55%. Here's both scenarios side by side:
Enter the pre-tax price
Purchase price: $350.00
Apply state rate (7%) — using dropdown
Tax = $350 × 0.07 = $24.50 | Total = $374.50
Apply Memphis combined rate (9.75%) — using custom field
Tax = $350 × 0.0975 = $34.13 | Total = $384.13
Reverse-check from a receipt total
Got a receipt showing $384.13 at 9.75%? Check the box and enter $384.13 — the calculator confirms $350.00 pre-tax.
Why a Dedicated Calculator Beats Mental Math
Rough estimates work for small purchases. For anything larger, the difference between guessing and calculating can be real money.
Forward and Reverse in One Tool
Most calculators only go one direction. This one also pulls a pre-tax price out of a total you already have — receipts, invoices, tax-included prices online.
All 50 States Built In
No tab-switching to look up rates. Select a state and the 2026 verified rate loads instantly. Override it anytime with a custom rate for city-level precision.
No Account, No Data Stored
The math runs in your browser. Nothing you enter is sent to a server. Close the tab and there's no record of what you calculated.
Effective Rate Display
See both the nominal rate (what's charged on the pre-tax price) and the effective rate (tax as a share of total spending) — useful for comparing real costs across states.
2026 Verified Rates
Rates are sourced from Tax Foundation data as of January 1, 2026, including Louisiana's 2025 rate increase and Alaska's updated local average.
Live Updates as You Type
Results update instantly with every keystroke — no need to hit Calculate after changing the price or switching states. Fast and frictionless.
Common Mistakes to Avoid
These errors come up constantly when people estimate sales tax on their own. Knowing them takes about two minutes; fixing them after the fact can take much longer.
Adding Tax to a Total That Already Includes Tax
This is the most frequent error on invoice reconciliations. If a supplier quotes a tax-inclusive price and you apply the tax rate again, you're double-taxing the amount. Always confirm whether a price is pre-tax or tax-inclusive before doing any math. The reverse checkbox on this calculator exists exactly for this situation.
Using a Memorized Rate That's Gone Stale
Louisiana raised its state rate from 4.45% to 5.00% in January 2025. New Mexico's effective rate changed following its gross receipts restructuring. If you're working from memory — or from a rate you Googled a year ago — it may already be wrong. State rates don't change often, but they do change.
Using the State Rate When the Combined Rate Applies
A shopper in New York City pays roughly 8.875% in combined sales tax, not New York State's 4% base rate. Colorado's state rate is only 2.9%, but Denver's combined rate exceeds 8.5%. Using just the state dropdown for a city-specific purchase will underestimate your actual cost. For any significant purchase in a major city, look up the combined rate and use the custom field.
Assuming Online Purchases Are Tax-Free
Since the 2018 Supreme Court ruling in South Dakota v. Wayfair, most online retailers must collect tax based on where the item ships — not where the retailer is based. Amazon, eBay, and Walmart all collect tax in virtually every taxable state. Planning to "save" on tax by buying online almost never works anymore.
Not Accounting for Exemptions on Qualifying Items
Groceries are exempt from sales tax in Texas, California, New York, Florida, and more than 30 other states. Prescription medications are exempt almost everywhere. Applying the full state rate to a grocery run will significantly overstate the tax. This calculator charges the standard rate on everything — adjust manually for exempt items or mixed carts.
When This Calculator Is Actually Useful
- ›Pre-purchase budget check. Looking at a $1,200 laptop in California? That's $103.50 in tax at the 8.625% average combined rate — over $100 that won't appear on the sticker price. Know the real total before you decide.
- ›Car buying. A used car priced at $18,500 in a state with 8.5% combined tax adds $1,572.50 in sales tax due at registration. Sales tax is typically financed separately from the vehicle price — knowing it in advance prevents surprises at the dealership. Pair with the Auto Loan Calculator to model the full financed amount.
- ›Expense reporting. Separating the tax portion from a business expense total — meals, equipment, supplies — is required for accurate accounting. Enter the tax-inclusive receipt total and use the reverse mode to get the clean pre-tax figure for each line item.
- ›Cross-state purchase comparison. Considering a major purchase while visiting a no-tax state like Oregon or New Hampshire? On a $5,000 purchase, a 9% home-state tax rate means $450 in savings by buying while traveling — worth calculating before you leave home without it.
- ›Freelancer invoicing. Self-employed professionals in states that tax services need to collect and remit sales tax on eligible work. Calculate the tax component before issuing an invoice so clients pay the exact correct amount — and you're not covering the difference.
- ›Home improvement budgeting. A $20,000 kitchen remodel has roughly $1,600–$2,000 in materials tax at typical combined rates. Budget this in before signing a contractor quote. For the full picture, see the Home Affordability Calculator and Mortgage Calculator.
- ›SALT deduction tracking. Taxpayers who itemize and claim the state sales tax deduction instead of state income tax need an accurate running tally of sales taxes paid throughout the year. Use this calculator to log each significant purchase and sum them up at year-end for Schedule A. The combined SALT deduction cap is $10,000 under current federal law — see the Federal Tax Calculator to model its impact on your return.
Sales Tax Planning Tips
- 01Know your state's sales tax holidays. About 20 states offer annual sales tax holidays — typically 2–3 day windows when clothing, back-to-school supplies, emergency preparedness items, or energy-efficient appliances are exempt. Florida's is one of the largest. Timing significant purchases around these windows is entirely legal and can save several percentage points on the total.
- 02Large purchases deserve the exact local rate. For anything over $500, pull the precise combined rate for your city or county from your state's Department of Revenue website and enter it in the custom field. The difference between a state average and an actual city rate can be 2–3 percentage points — that's $10–$15 on a $500 purchase.
- 03Track sales tax paid for your SALT deduction. If you live in a state with no income tax — Texas, Florida, Washington, Nevada, Wyoming, South Dakota, Alaska, or New Hampshire — you'll likely claim the sales tax deduction on Schedule A instead of a state income tax deduction. Keep a log of major purchases throughout the year, or use the IRS Optional Sales Tax Tables as a shortcut. Either way, running each purchase through this calculator makes documentation simple.
- 04For business purchases, separate tax from cost immediately. If you're tracking deductible business expenses, recording the pre-tax cost and the tax amount separately from the start avoids reconciliation headaches at tax time. The reverse mode handles this automatically for any receipt where the tax isn't broken out on a separate line.
- 05Verify e-commerce checkout math before paying. Online cart calculators occasionally apply an incorrect rate — especially on orders that ship to a different address than the billing address, or orders containing a mix of taxable and exempt items. Run the taxable items through this calculator before finalizing any large online order and compare the numbers.
Frequently Asked Questions
Which US states have no sales tax?
Five states have no statewide general sales tax: Delaware, Montana, New Hampshire, Oregon, and Alaska. The first four have zero sales tax at any level. Alaska has no state-level tax but allows local municipalities to levy their own — the average across Alaska is about 1.82% as of 2026.
How do I calculate sales tax on a purchase?
Multiply the pre-tax price by the rate as a decimal: Tax = Price × (Rate ÷ 100). Add the result to the price for the total. For a $150 item in Texas at 6.25%: $150 × 0.0625 = $9.38 tax, total $159.38. Enter your price and select a state above — the calculator does this instantly and also shows the effective rate.
How do I reverse-calculate the pre-tax price from a receipt total?
Divide the tax-inclusive total by (1 + rate as a decimal): Pre-tax = Total ÷ (1 + Rate/100). If you paid $162.50 at 8.5%: $162.50 ÷ 1.085 = $149.77. Check the "Amount entered already includes tax" box on this calculator — it handles the math automatically.
Will this match the exact tax I'm charged at checkout?
Usually close, but not guaranteed exact. This uses state-level rates. If your city or county adds its own local surcharge — common in Chicago, New York City, and parts of Louisiana — the real total will be higher. Use the custom rate field if you know your precise combined rate for more accurate results.
What is the effective tax rate and how is it different from the stated rate?
The stated (nominal) rate is applied to the pre-tax price. The effective rate is the tax as a percentage of the total amount paid — with the tax included in the denominator. A 6.25% nominal rate produces a 5.88% effective rate. The effective rate is always slightly lower and is the right number for comparing how much of your total spending actually went to tax.
Are groceries taxable in every state?
No. Many states fully exempt unprepared groceries — Texas, California, New York, Florida, and Illinois among them. Some states tax groceries at a reduced rate. Prepared foods (restaurant meals, hot deli items) are taxed at the full rate nearly everywhere. This calculator applies the standard rate to all items; adjust manually if you're calculating tax on a grocery-heavy cart.
Is sales tax charged on online purchases?
Yes, in most cases. Following the 2018 Supreme Court ruling in South Dakota v. Wayfair, online retailers with significant sales into a state must collect that state's tax — even without a physical presence there. Most major platforms (Amazon, eBay, Etsy, Walmart) now collect tax automatically based on the buyer's shipping address.
Why does my state's rate look different from what I remember?
State rates do change. Louisiana raised its state rate from 4.45% to 5.00% effective January 2025. New Mexico's effective rate shifted following its gross receipts restructuring. Local rates within states change more frequently — sometimes quarterly. Rates on this calculator are verified against Tax Foundation data as of January 1, 2026. If a specific number looks off, it may be that the rate genuinely changed, or that you're remembering a combined rate versus the state-only rate.
Related Calculators
Sales tax is just one piece of the picture. These free calculators cover other everyday money decisions worth running the numbers on.