Enter a pre-tax price and choose a US state — or type a custom rate — to add sales tax and get the final total. Built for invoices, quotes, and product pricing.
Enter the pre-tax price, choose a US state or type a custom rate, and instantly get the total including sales tax. The calculator uses the combined 2026 rate (state + average local) for your selected state. You can also view state-by-state rates on the sales tax map.
Quick answer: to add sales tax, multiply the price by 1 + the rate as a decimal. At 8%, $100 × 1.08 = $108, of which $8 is tax. To find just the tax, multiply by the rate on its own: $100 × 0.08 = $8. Going the other way — pulling tax out of a total that already includes it — is a different sum, and the reverse sales tax calculator handles it.
For informational purposes only. Tax rates change frequently — verify with your state's Department of Revenue before filing. This tool is not a substitute for professional tax advice.
· Rate source metadata is tracked in the TaxesLedger tax data registry.
Adding sales tax is one multiplication. Take the pre-tax price and multiply it by 1 plus the rate expressed as a decimal.
A rate of 8.25% becomes 0.0825, so the multiplier is 1.0825. Divide the percentage by 100 and add 1 — that is the whole conversion.
The totals below use each state's combined rate (state plus average local), so they are a close estimate rather than a figure for an invoice. For the exact rate at a specific address, use the ZIP code lookup.
| Pre-tax price | Oregon (0%) | Virginia (5.77%) | Texas (8.2%) | California (9.03%) | Louisiana (10.13%) |
|---|---|---|---|---|---|
| $10 | $10.00 | $10.58 | $10.82 | $10.90 | $11.01 |
| $25 | $25.00 | $26.44 | $27.05 | $27.26 | $27.53 |
| $50 | $50.00 | $52.89 | $54.10 | $54.52 | $55.07 |
| $100 | $100.00 | $105.77 | $108.20 | $109.03 | $110.13 |
| $250 | $250.00 | $264.43 | $270.50 | $272.58 | $275.33 |
| $300 | $300.00 | $317.31 | $324.60 | $327.09 | $330.39 |
| $500 | $500.00 | $528.85 | $541.00 | $545.15 | $550.65 |
| $1,000 | $1,000.00 | $1,057.70 | $1,082.00 | $1,090.30 | $1,101.30 |
These are not the same sum, and reversing one with the other is the most common arithmetic error in sales tax. Adding 8% to $100 gives $108. Taking 8% off $108 gives $99.36, not $100 — because the 8% was calculated on the smaller number.
To recover the pre-tax price from a total that already includes tax, divide: $108 ÷ 1.08 = $100. That is what the reverse sales tax calculator does, and the mechanism is explained in how to calculate tax from a total.
The combined rate at the destination of the sale, in most cases — the buyer's address rather than yours. The state rate is only part of it; county, city and special-district rates stack on top, which is why two addresses in the same state can carry different totals. The full picture is in origin vs destination sales tax, and every state's combined rate is listed on sales tax by state.
Most states require sales tax to be shown as its own line on the receipt or invoice rather than folded into the price, so the customer can see what was charged and you can report the pre-tax sale and the tax separately. Add the tax to the pre-tax amount after any discount you give at the point of sale, since the discount reduces the taxable price; a manufacturer's coupon usually does not, because the manufacturer reimburses you the difference.
Online sales are taxed at the rate for the delivery address in most states, so the right figure depends on where the order ships, not where you are. Shopping carts and marketplaces calculate this at checkout once you have told them where you are registered to collect. This calculator is the quick check for a single order or a price list, and for seeing how a rate change affects the total your customer pays. Whether you need to register in a state at all depends on its economic nexus threshold, which the nexus calculator covers.
Quick answers to the most common questions users ask.
Multiply the price by the rate as a decimal and add the result to the price. For $100 at 8%: 100 × 0.08 = $8 tax, total $108.
Most US states require sales tax to be itemized separately on invoices for taxable goods and services. The calculator above shows the breakdown clearly.
Generally the combined rate at the destination of the sale. Post-Wayfair rules require many sellers to collect at the buyer's address rate, not the seller's.
Depends on your state. Most states tax tangible goods; service taxability varies widely. Check with your state's Department of Revenue.
Use the Multi-State Sales Tax Calculator to model collections across multiple destination states at once.
About half of US states tax shipping when the item itself is taxable. State rules vary — verify with your jurisdiction.
For tip plus tax, use the dedicated Tip & Tax Calculator — it handles tip percentages and per-person split.
TaxesLedger uses Tax Foundation 2026 combined averages. For an exact rate at a specific address, use your state's address lookup tool.
All rates, thresholds, and regulatory guidance cited on this page are sourced from official government publications and non-partisan research institutions.
IRS Sales Tax Calculator
The official Internal Revenue Service tool for determining deductible state and local sales tax for federal income tax purposes.
irs.govU.S. Census Bureau
Official government repository for quarterly state and local tax revenue statistics and government finance data.
census.govSupreme Court — Wayfair Decision
The official government opinion for South Dakota v. Wayfair, Inc., establishing modern economic nexus standards for remote sellers.
supremecourt.govSBA Business Tax Guide
Official Small Business Administration guidance on understanding federal and state tax obligations for small business owners.
sba.govStreamlined Sales Tax Board
The official inter-governmental organization facilitating the simplification of sales tax administration across 24 member states.
streamlinedsalestax.orgCalifornia CDTFA
Official CA tax rates portal, address-specific lookup tools, and district tax publications.
cdtfa.ca.govTexas Comptroller
The official Texas sales tax rate locator, local jurisdiction database, and nexus guidance.
comptroller.texas.govNew York Tax & Finance
Official NY jurisdiction lookup for combined state, local, and MTA rates, and clothing exemptions.
tax.ny.govFlorida Dept. of Revenue
Official FL resource for state sales tax rates, county surtaxes, and annual tax holidays.
floridarevenue.comMyTax Illinois
Official Illinois Department of Revenue portal for address-based tax rate lookups and filings.
tax.illinois.govPennsylvania Revenue
Official PA portal for sales, use, and hotel occupancy tax rates and regulatory guidance.
revenue.pa.govOhio 'The Finder'
Official Ohio Department of Taxation tool for looking up rates by address, ZIP, or GPS coordinates.
thefinder.tax.ohio.govGeorgia Dept. of Revenue
Official Georgia sales and use tax rate charts and local jurisdiction tax distribution data.
dor.georgia.govNorth Carolina DOR
Official NCDOR portal for state, local, and transit tax rates by county and jurisdiction.
ncdor.govMichigan Treasury
Official Michigan Department of Treasury resources for the statewide 6% sales and use tax.
michigan.govTaxesLedger is an independent educational tool. We are not affiliated with any government agency. Rate records include source metadata and verification status; always confirm with the tax authority for your jurisdiction before filing. Last registry update: September 11, 2026.
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