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Billplz vs TaxID

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

APIBillplzNEW—TaxIDNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Billplz vs TaxID: common questions

Which is more reliable, Billplz or TaxID?

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

Do Billplz and TaxID need an API key?

Both ask you to authenticate — Billplz uses an API key and TaxID uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call Billplz and TaxID from the browser?

Neither sends browser-friendly CORS headers reliably, so call Billplz and TaxID from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Billplz and TaxID free for commercial use?

Billplz 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.