Five states stay at 0%
Delaware, Montana, New Hampshire, and Oregon have no statewide sales tax. Alaska also has no state sales tax, though local sales taxes can still apply.
Checkout Planning
Sales Tax Calculator
Estimate tax, compare states, and see how state plus local ranges change your final total.
Local Scenario
Midpoint blends the available combined-rate range when a state has local variation.
Comparison uses the midpoint of each state's available combined range.
Use midpoint first
When you only know the state and not the exact city, midpoint is usually the cleanest budgeting assumption before switching to a max-rate buffer.
Local districts can move the total a lot
Some states have modest statewide rates but meaningful local add-ons. That is why this tool compares combined ranges instead of pretending one statewide checkout rate fits every city.
No-tax states still need context
Buying in a no-state-sales-tax state can reduce in-person checkout cost, but online sellers on eBay, Etsy, Amazon, or Shopify often still deal with destination-based tax collection rules where the buyer lives, not just where the seller is based.
Estimated Tax
$0.00
Choose a state and amount to calculate your tax and final total.
Pre-tax amount
$0.00
Combined rate
0.00%
State portion
0.00%
Local portion
0.00%
Total after tax
$0.00
Rate Snapshot
2026 state and local rate range
Use minimum, midpoint, or maximum local assumptions when your state has wide local variation.
Comparison Read
Selected-state spread
Compare up to three states using the same purchase amount and year.
All-State Table
State sales-tax ranges for 2026
Shows the state rate, available local range, combined range, and estimated tax on your current amount.
| State | State Rate | Local Range | Combined Range | Estimated Tax |
|---|
Formula Blueprint
How the calculator works
Tax is purchase amount times the chosen combined rate. Combined rate is state rate plus the selected local assumption.
Sales tax = Purchase amount x Combined rate
Combined rate = State rate + Local scenario rate
Total after tax = Purchase amount + Sales tax
MinimumUses the lowest published combined rate for the state.
MidpointUses the midpoint between the minimum and maximum combined range.
MaximumUses the highest published combined rate for the state.
Pro Tips
Use the numbers correctly
Sales-tax planning gets more useful when you separate the planning estimate from final address-level checkout reality.
Use midpoint for planning
The midpoint is a practical planning assumption when you know the state but not the exact city or district yet.
Use maximum for buffer
If you are pricing inventory, budgets, or car-buying scenarios, the maximum combined range gives a conservative ceiling.
Locals can move the total
In some states the statewide rate is only part of the story. Local districts can widen the real checkout number materially.
Data Integrity
Methodology and source verification
This calculator uses year-specific state sales-tax ranges normalized from Avalara's published state rate pages for 2025 and 2026. It is designed for state-level planning, side-by-side comparison, and rough checkout estimation, not for address-level tax jurisdiction lookup or product-specific taxability decisions.
Verified
Reference basis: the page loads and stores local yearly datasets derived from Avalara's state sales-tax pages, then calculates tax by multiplying your purchase amount by the selected combined rate scenario: minimum, midpoint, or maximum. It does not attempt to resolve exact city, county, district, or product-taxability edge cases.
Avalara 2026 U.S. sales tax by state
Used for the 2026 state rate, local range, and combined range dataset displayed in the calculator and all-state table.
Open the 2026 Avalara state sales tax tableAvalara 2025 U.S. sales tax by state
Used for the 2025 comparison dataset so users can switch years and compare broad range changes without live refetching.
Open the 2025 Avalara state sales tax tableState-level planning versus exact checkout tax
The calculator intentionally models state-level ranges. Final tax at checkout can differ based on local district boundaries, destination sourcing rules, and the taxability of the product being sold.
Common Questions
Sales Tax Calculator FAQ
Short answers on how to interpret state, local, and combined sales-tax ranges.
Why does the calculator use a range instead of one exact rate?
Many states allow local counties, cities, or special districts to add tax. The page therefore shows minimum and maximum combined rates instead of pretending there is one universal checkout rate statewide.
What does midpoint mean?
Midpoint is a planning estimate between the published minimum and maximum combined rate for a state. It is useful when you know the state but not the exact buying location yet.
Does this replace address-level tax lookup?
No. This is a state-comparison and planning tool. Final tax at checkout can still depend on the exact jurisdiction and product taxability rules.
Why are some local ranges zero or not variable?
Some states have no local sales tax or effectively fixed statewide totals for general planning purposes, so the local contribution does not widen the range.
Which years are supported?
The tool currently supports 2025 and 2026 and is built so later years can be added through the same local-cache loader workflow.
Where does the data come from?
The page pulls the year-specific state sales-tax dataset from Avalara, writes the normalized result into a local app cache on first request, and reuses that local file afterward.