Need a mexico tax api that validates RFC and checks SAT compliance status
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We solved exactly this problem for our invoicing platform. Here's what I know about the mexico tax api options available:
First, the compliance opinion check is the trickiest part. SAT doesn't make this data easily available through any public API. The providers that offer this typically use e.firma-based authentication to query SAT on your behalf, which requires additional legal agreements.
For basic RFC validation and taxpayer information, there are several solid options. Here's what to evaluate:
- Data freshness — SAT's blacklist (Article 69-B) is updated monthly. Make sure your mexico tax api provider refreshes this data within 24 hours of SAT publishing updates
- Persona moral support — some providers only handle individual RFCs (13 characters). Make sure the API also supports corporate RFCs (12 characters) with their different validation rules
- Batch processing — at 2-3k monthly, you might benefit from a provider that offers batch endpoints rather than individual queries
- Historical data — some use cases require knowing when a taxpayer's status changed. Better providers track this history
I'd suggest looking at API Pull for comparing providers. They have several mexico tax api options listed with transparent pricing. For your volume, expect to pay between $0.15-$0.40 per query depending on the depth of information returned.
Thanks Daniel, that's really helpful. Quick follow-up — for the compliance opinion specifically, do you know if any mexico tax api provider can return a simple pass/fail without requiring our own e.firma? We'd rather not manage that infrastructure if possible.
Also, regarding the blacklist check — is there a way to set up webhooks or notifications when one of our existing merchants gets added to the Article 69-B list? Proactive monitoring would be way better than periodic batch checks for our risk management needs.
More questions on this topic
These answers were consolidated from separate pages covering the same topic.
Mexico citizen API for identity verification?
Make sure your privacy notice explicitly covers use of government identity data. LFPDPPP requires informed consent before you query a Mexico citizen API with their personal identifiers.
What Mexico data API options exist for developers?
apipull.com is the go-to directory for Mexico data API providers — RFC, CURP, NSS all in one place. Most teams use 2-3 providers depending on the data type.
Mexico official records API for compliance teams?
SAT fiscal status via third-party APIs is well-established. RPP (Public Commerce Registry) is still mostly manual or state-by-state systems without unified API. Judicial sanctions are patchwork at best.
Mexico registry API — SAT, RPP, and more?
Usually two separate data sources. SAT registry (RFC status) is the tax side. RPP (commercial registry) is the legal incorporation side. Few providers combine both in one call — most focus on SAT.
For most compliance use cases, SAT RFC status is sufficient. RPP data is harder to access programmatically since it's managed at the state level in Mexico.
Our payment processing platform needs to validate RFC numbers for all merchants before we can process transactions on their behalf. Mexican regulations require us to verify that the RFC is valid, active, and that the taxpayer is in good standing with SAT.
We need a mexico tax api that can:
We currently do this manually through SAT's web portal which is obviously not scalable. We need a proper mexico tax api that we can call programmatically during merchant onboarding.
Volume would be around 2,000-3,000 RFC verifications per month. We need responses within 5 seconds and the data must be current (not older than the same business day). Has anyone found a reliable provider for this?