Check a supplier’s RFC (Mexican tax ID) before you onboard it, pay it or deduct its invoices. We also check false CFDI invoices (Article 49 Bis), revoked CSDs (CSD sin efectos), not-located taxpayers (No localizados) and tax debts (créditos fiscales). When you need to keep the result, export a Constancia (a verifiable PDF record of the check, in Spanish).
Has a customer asked you to show that you are not on SAT’s blacklist? Check your own RFC and share the verifiable Constancia.
Don’t know your RFC, or not sure how it is written? How to recover it and check its format (in Spanish) →
Supports .csv, .txt, .xlsx or .xls
Choose a local fileFound RFCs with a valid format in the file.
What would you like to do with this list?
Checking RFCs against SAT publications...
| RFC | Name / legal name (razón social) | SAT status | Constancia |
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FOR YOUR SUPPLIER LIST
Use CSV, TXT or Excel (.xlsx and .xls) with complete RFCs, including the homoclave. One RFC per row makes the detected list easier to review.
RFC XAXX010101000 XEXX010101000
Generic sample RFCs: replace them with your suppliers’ RFCs.
Select or drag the file. The tool extracts the values in RFC format and removes duplicates. Confirm the list before you run the bulk check.
Read the source, status and date of each match. “No matches” refers only to the publications checked; it does not confirm registration, general tax compliance or that a transaction actually took place (materialidad).
What each source means (in Spanish) → Check the format or recover an RFC (in Spanish) →RFC check result
Article 69-B of the Federal Tax Code (CFF)
SAT’s 69-B list
Last checked:
This source could not support a current conclusion. It is not read as an absence of matches.
Preview of the Constancia, in Spanish like the PDF you export. Statuses, dates and notice numbers (oficios) appear as SAT publishes them.
Artículo 69-B del Código Fiscal de la Federación
No encontrado en listas 69-B
El RFC consultado no aparece en el listado de contribuyentes del Artículo 69-B del CFF publicado por el SAT a la fecha de esta verificación.
Fuente: Listado completo Art. 69-B CFF — SAT
Documento generado por 69b.mx
Este documento es una vista previa. Adquiere la constancia verificable para tu expediente o revisión interna.
Escanea el código QR para verificar
este documento, o ingresa a:
https://69b.mx/v/
The data shown is real — taken directly from the list SAT publishes, in today’s current version. Only the verification code and the QR code are placeholders in this preview; they are assigned when you export.
Preview of the Constancia, in Spanish like the PDF you export. Statuses, dates and notice numbers (oficios) appear as SAT publishes them.
Artículo 69-B del Código Fiscal de la Federación
CICLOS DETECTADOS
Historial de estatus
Referencias de oficios
Presunción SAT:
Presunción DOF:
Definitivo SAT:
Desvirtuado SAT:
Sent. Favorable SAT:
Fuente: Listado completo Art. 69-B CFF — SAT
Documento generado por 69b.mx
Este documento es una vista previa. Adquiere la constancia verificable para tu expediente o revisión interna.
Escanea el código QR para verificar
este documento, o ingresa a:
https://69b.mx/v/
The data shown is real — taken directly from the list SAT publishes, in today’s current version. Only the verification code and the QR code are placeholders in this preview; they are assigned when you export.
Transactions presumed to be nonexistent (EFOS/EDOS). We show the status published by SAT: presunto (presumed), definitivo (final), desvirtuado (rebutted) or sentencia favorable (favorable ruling).
DOF notices (oficios) that declare a taxpayer’s CFDI invoices false. Whoever received those invoices has 30 calendar days from publication to reverse their effects.
RFCs whose digital seal certificate (Certificado de Sello Digital, used to issue CFDI invoices) was revoked.
RFCs that SAT published as not located at their registered tax address.
Debts published by SAT as final (firmes) or as enforceable (exigibles). They appear separately in the result.
Mexican tax terms used on this site. Term names stay in Spanish, as SAT publishes them.
Lookups are free. If you need to keep the result, export a verifiable Constancia that records the date of the check.
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69b.mx API Free plan Check and monitor RFCs from your ERP or supplier onboarding flow, with webhook notifications.
69b.mx is an independent lookup and documentation tool based on publications by SAT and the Diario Oficial de la Federación (DOF, Mexico’s Official Gazette) (information published by SAT, in Spanish). We are not SAT and we do not provide tax or legal advice; for your particular situation, consult an accountant or a tax lawyer.
Built by Schaefer Partners — we build technology for highly regulated industries: legal, finance and insurance.
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Check RFCs, monitor your supplier list and receive every change in your own system, with the same data you see on 69b.mx.
You start on the free plan, with monthly limits that appear here once you activate. Your API account is billed separately from your web plan.
By activating the API, you accept the API terms of use (in Spanish).
Only complete lookups count. Once you reach the monthly limit, the API responds with 429 until the 1st of the next month (Mexico City time).
Paid API: 999 MXN per month (IVA included) plus usage above the included amounts. Your invoices and receipts (in Spanish) go to .
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Paid API · 999 MXN per month
IVA included. 5,000 lookups and 1,000 monitored RFCs per month, and 120 requests per minute. Constancias at 29 MXN for the first 100 in the period, then 19 MXN, and 9 MXN from the 1,001st. Usage above the included amounts is billed per use, without blocking your integration.
You pay by card on Stripe, whose pages are in Spanish. You can cancel at any time; the plan continues until the end of the paid period.
Free plan. Paid API, with more lookups and verifiable Constancias, is coming soon.
Use keys only from your server. If one is exposed, revoke it and create another.
We send you a signed POST each time an RFC on your monitoring list changes. HTTPS only, port 443 and public domains only.
Get email alerts if any of these RFCs changes status. Alert emails are in Spanish.
| RFC | Added | Action |
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You are not monitoring any RFCs yet. |
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A 69b.mx document for your records
Preview of the Constancia, in Spanish like the PDF.
In the next step you only confirm your email; you won’t be charged.
The Constancia PDF is in Spanish, and so is any CFDI invoice (the Mexican electronic invoice) issued for your payment. You pay on a Stripe checkout page in Spanish.
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