ANNUAL INCOME TAX RETURN SAT

As every year, taxpayers in Mexico, whether individuals or corporations, are obligated to file their Annual Income Tax Return (ISR), which is the mandatory tax report of income, deductions, and provisional payments for the immediately preceding fiscal year (2025).

According to the regulations governing this matter, corporations have until March 31, 2026, to fulfill their obligation.

Individuals, on the other hand, have from April 1 to 30, 2026, to complete this process.

It is important to note that the timely filing of this return will prevent the issuance of enforced compliance requests by SAT, and, even worse, the imposition of substantial penalties/fines by the tax authority.

The importance of your annual income tax return is to allow you to apply authorized deductions, amortize tax losses and, if there is a balance in your favor, request a refund, in addition to maintaining a positive compliance opinion from SAT.