Business
Invoicing, margin & GST calculators
Sales Tax Calculator
Add or reverse US sales tax by state (combined state + avg local). Accurate, instant and free — for United States.
What these mean:
Adding 8.99% sales tax on top of the pre-tax amount (California).
Pre-tax amount
$100.00
Sales tax · 8.99%
$8.99
Total
$108.99
California note
This is a combined average rate
Origin vs destination sourcing
Need to put this on a bill? Use the Invoice Generator (US sales-tax line). Outside the US, try the GST Calculator (India) or the VAT Calculator(UK & EU).
Add sales tax vs reverse sales tax
US sales tax is a consumption tax added at checkout on most goods (and some services), levied by states and their local jurisdictions rather than the federal government. There are two everyday calculations: adding tax to a pre-tax price, and reversingit out of a tax-inclusive total. The reverse case is the one people get wrong — you divide the rate out, you don't subtract it.
Add sales tax
price → total
total = price × (1 + rate ÷ 100)
$100 at 8.20% → tax $8.20, total $108.20.
Reverse sales tax
total → price
price = total × 100 ÷ (100 + rate)
$108.20 at 8.20% → price $100, tax included $8.20. Not total − 8.20%.
- 1Combine the state and local rates: Texas is 6.25% state + an average 1.95% local = 8.20% combined. On a $100 sale that is $8.20 of tax.
- 2Put it on a bill: Drop these figures into the Invoice Generator to add a US sales-tax line and download the invoice as a PDF.
State base + average local rate
The rate you pay is the state base rate plus any local (county, city and special-district) rate. Selecting a state here loads its combined rate — the state base plus the population-weighted average local rate published by the Tax Foundation. That average is a solid estimate, but the real rate is set at the local level and varies address by address.
Verify your exact local rate
Origin vs destination sourcing
NOMAD states — no state sales tax
Combined sales tax rate by state
Statewide base rate, average local rate and combined rate for all 51 jurisdictions (Tax Foundation — State and Local Sales Tax Rates, 2026). Local rates vary within each state — treat the combined column as an average, not your exact rate.
| State | State rate | Avg local | Combined |
|---|---|---|---|
| Alabama | 4% | 5.46% | 9.46% |
| AlaskaNOMAD | 0% | 1.82% | 1.82% |
| Arizona | 5.6% | 2.92% | 8.52% |
| Arkansas | 6.5% | 2.96% | 9.46% |
| California | 7.25% | 1.74% | 8.99% |
| Colorado | 2.9% | 4.99% | 7.89% |
| Connecticut | 6.35% | 0% | 6.35% |
| DelawareNOMAD | 0% | 0% | 0% |
| District of Columbia | 6% | 0% | 6% |
| Florida | 6% | 0.98% | 6.98% |
| Georgia | 4% | 3.49% | 7.49% |
| Hawaii | 4% | 0.5% | 4.5% |
| Idaho | 6% | 0.03% | 6.03% |
| Illinois | 6.25% | 2.71% | 8.96% |
| Indiana | 7% | 0% | 7% |
| Iowa | 6% | 0.94% | 6.94% |
| Kansas | 6.5% | 2.19% | 8.69% |
| Kentucky | 6% | 0% | 6% |
| Louisiana | 5% | 5.11% | 10.11% |
| Maine | 5.5% | 0% | 5.5% |
| Maryland | 6% | 0% | 6% |
| Massachusetts | 6.25% | 0% | 6.25% |
| Michigan | 6% | 0% | 6% |
| Minnesota | 6.875% | 1.26% | 8.14% |
| Mississippi | 7% | 0.06% | 7.06% |
| Missouri | 4.225% | 4.22% | 8.44% |
| MontanaNOMAD | 0% | 0% | 0% |
| Nebraska | 5.5% | 1.48% | 6.98% |
| Nevada | 6.85% | 1.39% | 8.24% |
| New HampshireNOMAD | 0% | 0% | 0% |
| New Jersey | 6.625% | -0.02% | 6.6% |
| New Mexico | 4.875% | 2.79% | 7.67% |
| New York | 4% | 4.54% | 8.54% |
| North Carolina | 4.75% | 2.25% | 7% |
| North Dakota | 5% | 2.09% | 7.09% |
| Ohio | 5.75% | 1.54% | 7.29% |
| Oklahoma | 4.5% | 4.56% | 9.06% |
| OregonNOMAD | 0% | 0% | 0% |
| Pennsylvania | 6% | 0.34% | 6.34% |
| Rhode Island | 7% | 0% | 7% |
| South Carolina | 6% | 1.49% | 7.49% |
| South Dakota | 4.2% | 1.91% | 6.11% |
| Tennessee | 7% | 2.61% | 9.61% |
| Texas | 6.25% | 1.95% | 8.2% |
| Utah | 6.1% | 1.32% | 7.42% |
| Vermont | 6% | 0.39% | 6.39% |
| Virginia | 5.3% | 0.47% | 5.77% |
| Washington | 6.5% | 3.01% | 9.51% |
| West Virginia | 6% | 0.59% | 6.59% |
| Wisconsin | 5% | 0.72% | 5.72% |
| Wyoming | 4% | 1.56% | 5.56% |
Frequently asked questions
Multiply the pre-tax amount by the sales tax rate and add it back: total = price × (1 + rate ÷ 100). For example, $100 at an 8.20% combined rate becomes $100 + $8.20 = $108.20. The $8.20 is the sales tax you collect and remit to the state.
Do not simply subtract the rate — divide it out. The pre-tax amount = total × 100 ÷ (100 + rate). For $108.20 at 8.20%, the pre-tax amount is 108.20 × 100 ÷ 108.20 = $100, and the tax included is $8.20. Subtracting 8.20% of $108.20 ($8.87) would be wrong.
By default it loads the combined rate for the state you pick — the statewide base rate plus the population-weighted average local (county/city/district) rate, from the Tax Foundation. That average is a good estimate, but the actual rate charged depends on the exact destination address. You can override the rate with your precise local rate.
Five states levy no statewide sales tax — the NOMAD states: New Hampshire, Oregon, Montana, Delaware and Alaska. Note that Alaska has no state tax but many localities impose their own local sales tax, so a sale into an Alaskan city or borough can still be taxable.
Most states use destination-based sourcing: you charge the rate at the buyer’s location (where the goods are received), not where you ship from. A few states are origin-based for in-state sales. Whether you have to collect at all in a given state depends on your economic nexus there (a sales or transaction threshold).
No. This tool works at the state level with the average combined rate. Sales tax is set at the county, city and sometimes special-district level, so two addresses in the same ZIP can differ. Use it for quick estimates and budgeting, then confirm the exact rate for the destination before you file.
Yes — it is completely free with no sign-up, and every calculation runs in your browser. Nothing you type is sent to a server or stored. Rates are for guidance; confirm the correct rate and taxability for your transaction before filing.
Method, assumptions & references
Methodology: adding tax → total = price × (1 + rate/100); reversing tax → price = total × 100 / (100 + rate). The default rate per state is the state base plus the population-weighted average local rate (Tax Foundation — State and Local Sales Tax Rates, 2026, effective 2026-01-01). California, for example, has the highest state base at 7.25% (combined 8.99%). Per-state rates are versioned in-repo and PR-updated annually; local rates vary by address and are not ZIP-resolved.
Cross-links
How we calculate this
Reviewed by Reckonist Editorial · Last reviewed 4 July 2026. Figures follow the methods and sources set out in our editorial standards.
Sales tax rates and rules change frequently and vary by locality. The combined rates shown are population-weighted state averages for guidance only — confirm the exact rate and taxability for the destination address before you file. This is not tax advice.
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