Sales tax rates. Down to the address.

And where we cannot, the answer says so.

PCDEFGHIJKLMN, ABCDGHIJKLKLMNOP OJKLMNO ABCDE ABCDEJKLMNOJKLMNO RPQRSTURSTUVWOPQRSTPQRSTUMNOPQR TNOPQRS789., MNOPQRDEFGHIOPQRST LOPQRSTTUVWXYJKLMNONOPQRSGHIJKL AJKLMNOJKLMNODEFGHIQRSTUV89., A NIJKLMNMNOPQROPQRSTDEFGHIIJKLMN D6789.,FGHIJK6789.,GHIJKL, ABCD ,789., 6789.,789., GHIJKL6789., OPQRST789., HIJKLM ABCDE789., OSTUVWXIJKLMNDEFGHI6789.,JKLMNO R789., TUVWXY789., 789., MNOPQR 789., 789., 789., FGHIJK789., 789., 789., 789., TUVWXY789.,

0345678345678123456123456VWXYZ0 . 0XYZ012345678VWXYZ0VWXYZ0VWXYZ0 0012345234567VWXYZ0VWXYZ0VWXYZ0 789., 012345789., 789., 789., %

No jurisdiction here levies a general sales tax.

Combined 0.00%

source Oregon Department of Revenue

Texas state 6.25%

City of Houston city 1.00%

Metropolitan Transit Authority of Harris County transit 1.00%

Combined 8.25%

source Texas Comptroller of Public Accounts

New York State state 4.000%

New York City city 4.500%

Metropolitan Commuter Transportation District transit 0.375%

Combined 8.875%

source NY State Department of Taxation and Finance, Publication 718

Michigan state 6.00%

Combined 6.00%

source Michigan Department of Treasury

Kentucky state 6.00%

Combined 6.00%

source Kentucky Department of Revenue

The ZIP code is a floor, not an answer.

So we measured how far off it is, against real jurisdiction boundaries.

1 in 11

addresses where the ZIP-level rate is the wrong rate

+2.70

percentage points, the worst gap we found

measured 2026-11-08 How we measured it

Every answer says which rung it came from.

precision is part of every response.

address: Placed inside real jurisdiction boundaries.
zip: The ZIP code’s rate. Useful, and often not the rate.
city: A named city district, where we hold one.
county: A named county district, where we hold one.
state: The state rate alone, labelled as the last resort.

One request, and what comes back.

$ curl "https://api.situs.tax/v1/rate?address=1600+Pennsylvania+Ave+NW&state=DC" \
    -H "Authorization: Bearer situs_live_..."

{
  "rate": 0.06,
  "precision": "address",
  "coverage": "exact",
  "jurisdictions": [
    { "name": "District of Columbia", "level": "state", "rate": 0.06 }
  ],
  "as_of": "2026-11-08",
  "source": "DC Office of Tax and Revenue"
}

coverage: Is the rate the whole answer? approximate means a locality there can tax this point and we could not place the address inside it, so the rate is a floor.
as_of: Rates are versioned, never overwritten. ?date= answers for any past day.
source: The publication it came from, so a dispute goes to a document.

Priced for many small sites.

One store, one plugin install, one key. WooCommerce, Shopify and WordPress plugins are on the way.

Per month. Indicative while the numbers settle.
Plan	Per month	Included lookups	Then, per 1,000
Free	$0	1,000	—
Standard	$39	10,000	1.50 USD
Scale	$129	100,000	0.90 USD
Agency	$349	1,000,000	0.60 USD

Test traffic is metered apart from live, so building against the API does not spend the allowance you bought.

Get an API key What each plan includes