Undeclared rent: how to reconstruct your Mexican tax position
Adding rental activity to an existing RFC does not resolve earlier tax returns. Addressing undeclared rent requires a period-by-period...
Understand your taxes.
Make better decisions.
Clear steps for SAT, CFDI, and tax obligations.
When Do You Need to Register With SAT? Mexico's 2026 RFC Map for Individuals
Mexico has separate moments for obtaining an RFC, activating an economic activity, and updating existing duties. This 2026 map shows...
How to Update Activities and Obligations in the RFC with the SAT
If your activity, tax regime, or obligation changes, update your RFC with the actual date and data, keep the acknowledgment receipt, and...
Tax status certificate for individuals in Mexico
Download and review a Mexican tax status certificate for an individual: SAT access routes, RFC fields, CFDI 4.0 data, errors and update...
SAT, RFC and CFDI questions for Mexican SMBs
Answers for Mexican SMBs about RFC registration, tax regimes, e.firma, CSD, CFDI 4.0, monthly filings, the Tax Mailbox and SAT records.