Practical guide for the annual tax return in Mexico

Introduction to the annual declaration

The annual statement is a legal requirement for individuals and companies that pay taxes in Mexico. Complying in a timely manner avoids fines, surcharges and problems with the SAT.

Dates and deadlines

  • Individuals: April 1 to 30.
  • Legal entities: March of each year.
  • Electronic mode mandatory through the SAT portal.

Required Documentation

  1. Withholding certificates (salaries, interest, leases).
  2. CFDI of deductible expenses (health, education, tuition, donations).
  3. Proof of investments (yields, contributions to retirement funds).
  4. Bank and credit card statements.
  5. Data of partners or shareholders (in legal entities).

Step by step

Advance preparation

  • Verify that all CFDIs are correctly related and stamped.
  • Check that your tax information (address, RFC) is up to date with the SAT.

Download information

  • Enter the SAT portal, section "Statements" → "Annual".
  • Generate and download your XML file y proof of tax status.

Data capture

  • Enter accumulated income and personal deductions.
  • Use the prevalidation tool of the SAT to detect errors.

Validation and shipping

  • Review the summary of your return: amounts, periods and totals.
  • Send and download the acknowledgement of receipt with fiscal folio.

Frequent errors and how to avoid them

  • Omission of income: register all your sales invoices.
  • Misclassified deductions: reviews annual limits and categories.
  • Outdated data: update address and mailing address before filing.
  • Do not validate pre-declaration: uses the SAT's simulation tools.

Final tips

  1. Planning: starts collecting CFDIs as of January.
  2. Accounting software: uses a system that automates the CFDI relationship.
  3. Professional advice: consider a certified accountant to reduce risks.
Asistente AFB Asistente NOVA – Hero Doc