Sales Tax Calculator
Calculate sales tax on any purchase by state. See state base rates, check if groceries are exempt, find the total cost including tax, and understand post-Wayfair economic nexus for online sellers.
Total Cost
$107.25
| Detail | Amount |
|---|---|
| Purchase Price | $100.00 |
| State Tax Rate | 7.250% |
| Sales Tax | $7.25 |
| Total | $107.25 |
Groceries are exempt from sales tax in California.
Sales tax
Tax rate
Total cost
State-level base rates only. Many states allow cities and counties to add local sales taxes which are not included here. Check your local rate for exact calculations.
Edit inputs ↑State sales tax rate guides
Rates, local add-ons, and exemptions for the states people look up most.
How US sales tax actually works
Unlike most countries' VAT (value-added tax) systems, the US uses a RETAIL sales tax — applied once at the final consumer transaction, not at each step of production. Sales tax is administered entirely at the STATE and LOCAL level — there's no federal sales tax. The result is 11,000+ separate tax jurisdictions, each with its own rate, exemption schedule, and filing requirements.
Three structural decisions vary by state: (1) the BASE — what items are subject to tax (goods vs services, groceries, clothing, prescription drugs); (2) the RATE — state base plus locally-stacked rates; (3) the SOURCING — whether the rate applied is based on seller location ("origin-based") or buyer location ("destination-based"). The IRS provides the official Sales Tax Deduction Calculator for the federal deduction (it replaced the older static Publication 600 tables).
2026 combined state + local sales tax averages
State rate + average local rate, ranked. The average local rate is a Tax Foundation 2026 estimate, not an official government figure: no state revenue department publishes a statewide average of its local rates. It is a weighted average across the localities in the state.
| State | State rate | Avg. local rate | Combined avg. |
|---|---|---|---|
| Louisiana | 5.00% | 5.13% | 10.13% |
| Tennessee | 7.00% | 2.61% | 9.61% |
| Arkansas | 6.50% | 2.98% | 9.48% |
| Washington | 6.50% | 3.07% | 9.57% |
| Alabama | 4.00% | 5.46% | 9.46% |
| Oklahoma | 4.50% | 4.56% | 9.06% |
| California | 7.25% | 1.78% | 9.03% |
| New York | 4.00% | 4.54% | 8.54% |
| Texas | 6.25% | 1.95% | 8.20% |
| Florida | 6.00% | 0.98% | 6.98% |
| Alaska | 0.00% | 1.82% | 1.82% |
| Delaware / Montana / NH / Oregon | 0.00% | 0.00% | 0.00% |
Note: state-rate-only doesn't tell the full story — Louisiana raised its state rate from 4.45% to 5.00% effective January 1, 2025 (Act 11, 2024 3rd Extraordinary Session), and combined with a 5.12% average local rate it has the highest combined rate in the country. Conversely, California's 7.25% is the highest state-only rate even though combined falls behind Louisiana/Tennessee/Arkansas/Washington/Alabama. See the Washington sales tax rates page for details.
Post-Wayfair economic nexus — when sellers must collect
South Dakota v. Wayfair, Inc. (138 S.Ct. 2080, June 21, 2018) overturned the prior "physical presence" rule (Quill Corp. v. North Dakota, 1992) — states can now impose sales tax collection on remote sellers based on ECONOMIC nexus, even without physical presence.
All 45 sales-tax states + DC have now enacted economic nexus thresholds. The most common thresholds:
$100k OR 200 transactions
Most common threshold (originally from the Wayfair case itself). Adopted by 30+ states. Crossing EITHER threshold in current or previous calendar year triggers collection obligation.
$500k+ sales only
CA ($500k), NY ($500k AND 100 sales), TX ($500k). Higher thresholds shield smaller sellers from compliance burden.
Just $100k
Several states dropped the "or 200 transactions" prong (KS, OH 2024 update) — recognizing that 200 small-dollar transactions doesn't warrant the same compliance burden as $100k+ revenue.
Marketplace facilitator override
If you sell ONLY via Amazon/eBay/Etsy and never your own site, the platform handles collection — your individual nexus tests don't apply for those sales. Direct Shopify/website sales DO count toward your nexus.
Sales tax SALT deduction election
Under IRC §164(b)(5)(A), itemizers can elect to deduct STATE and LOCAL SALES tax instead of STATE INCOME tax — one or the other, not both. The choice is made annually on Schedule A line 5a (check the box for "general sales taxes" instead of "state and local income taxes").
When is sales tax the better election?
- No state income tax. AK, FL, NV, NH, SD, TN, TX, WA, WY residents have no state income tax — so sales tax is the ONLY SALT-able state tax (other than property). Always elect sales tax.
- Low-income / high-purchase year. If state income tax is low (e.g., retiree with $40k income) but you made a big car/boat purchase, the sales tax on the vehicle plus the IRS Sales Tax Deduction Calculator baseline amount may exceed the small state income tax bill.
- State with low income tax + high local sales. Tennessee has no state income tax but 9.61% combined sales rate — sales tax is the only state tax to deduct.
The IRS Sales Tax Deduction Calculator gives a baseline deduction based on state + family size + AGI. ADD documented major purchases:
- Motor vehicles (car, truck, motorcycle, RV)
- Aircraft, boats
- Building materials for a major home renovation
Within the OBBBA SALT cap of $40,000 (2025; phasing down to $10,000 above $500,000 MAGI; rising to $40,400 in 2026). Combined SALT = property tax + GREATER of state income or sales tax — capped at $40,000.
Worked 2025 sales tax scenarios
$25,000 car purchase in Texas
TX state rate 6.25% × $25,000 = $1,562.50 sales tax paid at titling. No local motor-vehicle sales tax. Itemizing federal? Add to the IRS Sales Tax Deduction Calculator baseline + this $1,563 → ~$2,500 total sales tax deduction for the year.
$500 furniture in Los Angeles
City of Los Angeles 10.25% (7.25% CA state + 3.00% LA County district taxes, including a half-cent countywide increase effective October 1, 2026 per CDTFA). $500 × 10.25% = $51.25 sales tax. (Some other LA County cities layer additional district taxes, up to 11.75%.) Destination-based — applies whether bought in store or shipped to an LA address from out-of-state.
$200 grocery run in Mississippi
MS taxes groceries at a reduced 5% rather than its 7% state rate. $200 × 5% = $10 grocery tax. Same purchase in Massachusetts: $0 (groceries exempt).
Shopify seller, $80k revenue, no marketplace
Under most states' $100k or 200-transaction threshold. Likely safe from collection. But if 250 small-dollar transactions accumulate, the transaction-count prong triggers in $100k-or-200-transactions states. Track BOTH metrics by state.
Etsy seller, $200k revenue (all Etsy)
Marketplace facilitator law — Etsy collects and remits sales tax. The seller doesn't need to register in 45 states. The seller's nexus tests apply only to non-Etsy sales (Shopify, in-person, etc.).
Retiree, $60k AGI in Tennessee, $30k car
No state income tax. Sales tax election. IRS Sales Tax Deduction Calculator baseline for a TN family of 1 at $60k AGI ≈ $1,200 + $30k × 9.56% car sales tax ≈ $2,868 → ~$4,068 sales tax deduction. With property tax $2k, total SALT ≈ $6,068 — well under the $40,000 cap.
Common sales tax mistakes
- Online sellers ignoring nexus. Even small Shopify or Squarespace sellers can cross the $100k or 200-transaction threshold in a single state — triggering registration, collection, and remittance obligations. Use Avalara, TaxJar, or Vertex to monitor multi-state thresholds.
- Buyers ignoring use tax. Pre-Wayfair internet purchases now require seller-side collection, but use tax still applies for purchases from out-of-state retailers below their nexus threshold. Audit risk is highest for big-ticket items where titling/registration triggers state notice (cars, boats).
- Double-counting state tax election. You elect EITHER state income OR state sales tax — not both. Schedule A line 5a checkbox is exclusive. Software handles it, but manual filers sometimes try to add both.
- Missing the big-purchase add-back. The IRS Sales Tax Deduction Calculator gives a BASELINE deduction. Add the actual sales tax paid on cars, boats, RVs, and major home renovation materials separately. Many filers stop at the baseline and leave $1,000+ deductions on the table.
- Treating online tax as voluntary. Post-Wayfair, sellers are legally required to collect once over nexus. Selling cross-state without collection creates a state-level tax liability with penalties + interest for the seller — not the buyer.
- Forgetting marketplace facilitator coverage. Etsy/Amazon/Walmart handle their portion. If you also sell direct, count only the DIRECT sales toward your individual nexus tests.
Sales tax calculators by city
Use a city page for a verified general combined rate and a clear breakdown of its state, county, city and district layers.
Frequently asked questions
What is sales tax?
How do I calculate sales tax?
Is state sales tax the same as the final local rate?
Which states have no sales tax?
Are groceries taxed?
What about local sales taxes?
Which state has the highest sales tax?
How does the post-Wayfair economic nexus work?
What's marketplace facilitator law?
Is sales tax deductible on federal taxes?
What is use tax and when does it apply?
Sales tax on services — what changed?
What about clothing exemptions?
Tax-free weekends — what are they?
Origin-based vs destination-based sourcing?
Are cars and boats taxed at sales tax or a separate rate?
Sources
Related Calculators
Sales Tax Rate by ZIP Code
Look up the combined sales tax rate for any US ZIP code from official SST data, plus a calculator for the total
Reverse Sales Tax Calculator
Back out the pre-tax price and tax from a tax-inclusive total
Tax-Free Weekend 2026
Every state sales tax holiday date and per-item price cap for 2026, and which states have none
Property Tax Calculator
State property taxes, $40,000 SALT cap, deduction impact
State Income Tax
All 50-state brackets, credits, deductions for your filing status
State Tax Comparison
Side-by-side state income tax comparison for two or more states at your income level and filing status
Itemized vs Standard
$40,000 SALT cap, mortgage interest, 7.5% AGI medical floor
Invoice Generator
Create an itemized invoice with optional sales tax and payment details. Free PDF export, no signup
Whatever your state charges, get a reminder before each federal tax deadline. One email before each quarterly estimated tax payment (Tax Day included), plus one when the IRS publishes next year's numbers. About five a year; you confirm once and can unsubscribe anytime.
Emails are sent with Kit. See our privacy policy.