How to use Validate RFC (Mexico)
Paste an RFC (12 characters for companies, 13 for individuals) and instantly check whether its structure and check digit are correct. Click Process, then download or copy the result when it is ready.
Privacy and output quality
It validates the format (letters, date and homoclave) and recomputes the SAT’s official check digit. It is not a SAT lookup: it checks that the RFC is well formed, not that it exists. 100% local processing.