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Municipal Finance API vs TaxID

Same instrument, two spec sheets — measured, not claimed.

APIMunicipal Finance APIHEALTHY78TaxIDHEALTHY89
Uptime · 30d
Uptime · 90d96.1%100%
Uptime · 30d98.3%100%
P50 · ms2094729
P95 · ms29521556
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Municipal Finance API vs TaxID: common questions

Which is more reliable, Municipal Finance API or TaxID?

On our scheduled checks, TaxID leads on measured uptime — Municipal Finance API at 96.1% versus TaxID at 100% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, Municipal Finance API or TaxID?

TaxID has the lower median latency in our checks — Municipal Finance API responds in 2094 ms versus TaxID at 729 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Municipal Finance API and TaxID need an API key?

Municipal Finance API needs no key, while TaxID requires a free API key. If you want to start calling without signup, reach for Municipal Finance API first.

Can I call Municipal Finance API and TaxID from the browser?

Only Municipal Finance API is browser-friendly — it returns CORS headers over HTTPS. TaxID needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Municipal Finance API and TaxID free for commercial use?

Municipal Finance API has unclear commercial terms, and TaxID has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.