RFC ValidatorVerify Federal Taxpayers Registry
Validate any Mexican RFC in seconds. Check format, date of birth/constitution and homoclave. 100% free.
RFC Validator
Validates and verifies the format of Mexican RFCs.
Format: 4 letters (Individual) or 3 (Entity) + 6 numbers + 3 homoclave
Ejemplos de Formatos:
What is the RFC?
The RFC is a unique code required for every individual or legal entity in Mexico to carry out any lawful economic activity.
RFC Types:
- Physical Person RFC (13 characters):
- Entrepreneurs, professionals and independent workers
- Individuals with personal income or own businesses
- Format: 4 letters + date (6 digits) + homoclave (3 characters)
- Legal Entity RFC (12 characters):
- Companies, societies and corporations
- Associations and non-profit organizations
- Format: 3 letters + consecutive (6 digits) + homoclave (3 characters)
What validates this tool?
- ✅ Correct format and length
- ✅ Date validity
- ✅ Structure of Natural Person vs Legal Entity
What is the RFC used for?
- • Electronic invoicing (CFDI)
- • Tax declaration
- • Opening bank accounts
- • Government procedures
- • Commercial contracts
- • Labor relations
Important:
This tool only validates the format and mathematical structure of the RFC. It does not confirm if the RFC is active, registered with the SAT, nor belongs to a specific person. For official verification, consult the SAT website (https://www.sat.gob.mx/).
Why use our Validator?
The most precise tool for validating RFCs
SAT Algorithm
Verify the official structure defined by the SAT.
100% Safe
Local validation. No data is sent to our servers.
Type Detection
Automatically identifies whether it is a Natural Person or a Legal Entity.
RFC Types:
Automatically identifies whether it is a Natural Person or a Legal Entity.
Natural Person
13 (Legal)
- 4 letters: Surnames and name (first vowel or first letter)
- 6 digits: Date of birth (YYMMDD)
- 3 characters: Homoclave (to differentiate duplicates)
- 1 digit: SAT check digit
Legal entity
12 (Legal)
- 3 letters: Denomination or company name
- 6 digits: Date of constitution (YYMMDD) or consecutive
- 3 characters: Homoclave (to differentiate duplicates)
- 1 digit: SAT check digit
Do you need to validate other documents?
Try our validators for Argentina, Chile and Brazil