Penalties for Not Filing the 2026 Annual Tax Return with the SAT

Starting April 1st, thousands of taxpayers in Mexico enter a fiscal countdown. Throughout the entire month, individuals must file their 2026 annual tax return, which corresponds to the 2025 fiscal year, with the Tax Administration Service (SAT). This is a crucial process for determining whether there is a balance due or a refund owed. While not everyone is required to complete this process, those who are face a situation where failing to file the annual tax return can result in economic sanctions, tax implications, and even serious legal consequences.

SAT Fines and Penalties in 2026: What You Could Pay

Non-compliance with the 2026 annual tax return is not a minor issue. According to the Federal Tax Code, fines can vary depending on the severity of the omission, the delay period, and whether or not there has been a prior request from the authority.

Basic Fines for Non-Filing

• Range from 1,810 to 22,400 pesos for each omitted obligation.
• Apply when the taxpayer fails to file their return within the established deadline.

Penalties for SAT Request If the SAT requests compliance and the taxpayer still fails to file, penalties can amount to:

• 20,790 to 41,590 pesos.
• In some cases, they can exceed 44,000 pesos.

Cumulative Penalties

• The authority can issue up to three requests, each with its respective penalty.
• 15 days are granted between each notification.
• Each non-compliance generates a new fine for the omitted obligation.

Additional Penalty If the taxpayer ignores all three requests, the SAT can impose a penalty equivalent to the highest amount declared in any of the last six tax returns.

Spontaneous Filing There is a “window of opportunity”: if the taxpayer files the return before being requested, they can avoid the fine, though not the surcharges if tax is due. In this context, the final amount will depend on factors such as recidivism, type of income, and previous tax behavior.

Other Tax Consequences: Beyond Economic Penalties

Failing to comply with the 2026 annual tax return not only impacts one’s finances. It can also have implications that limit the financial and fiscal operations of individuals:

1. Surcharges and Updates
   • When tax is due, the following are generated:
     • Monthly surcharges (approximately 1.47%).
     • Inflation adjustment, from the deadline until payment.
   • This significantly increases the original amount of the debt.
2. Negative Compliance Opinion
   • Also known as “32-D”, this document reflects the taxpayer’s fiscal status.
   • A negative assessment can:
     • Limit access to credit or financing.
     • Prevent the signing of contracts with companies or government.
     • Restrict tax benefits.
3. Cancellation of the Digital Seal Certificate (CSD)
   • The SAT can suspend or cancel the CSD.
   • Without this certificate, the taxpayer:
     • Cannot issue invoices.
     • Sees their professional or business operations compromised.
4. Constant Requests
   • The tax authority may insist on compliance through formal notifications.
   • Ignoring them aggravates the situation and increases penalties.

Who is Required to File the Annual Tax Return?

The SAT distinguishes between obligated and non-obligated taxpayers. However, even those who are not obligated may file the return if they wish to obtain a tax refund.

Individuals Who Must File

1. Wages and Salaries
   • If they worked for more than one employer.
   • If they changed jobs before December 31st.
   • If they received income from abroad.
   • If their annual income exceeded 400,000 pesos.
   • If they received severance pay or retirement benefits.
2. Professional Services
   • Freelancers or individuals who issue fees.
3. Business Activities
   • Includes:
     • Digital platforms.
     • Fiscal Incorporation Regime (RIF).
     • Activities in border regions.
4. Leasing
   • Individuals who rent real estate.
5. Interest or Dividends
6. Alienation of Assets
   • Sale of properties or other assets.

Individuals Who May Not File

In certain cases, the annual tax return is optional:

• Those who earned income from salaries from a single employer and did not exceed 400,000 pesos.
• Individuals with interest income less than 100,000 pesos.
• Nominal interest less than 20,000 pesos from financial institutions.
• Taxpayers under the Simplified Trust Regime (Resico). Nevertheless, even in these cases, filing may be convenient to obtain tax refunds.

Can There Be Legal Consequences or Imprisonment?

Although it sounds extreme, there are indeed scenarios where not filing can escalate to a tax crime. The Federal Tax Code establishes that prolonged omission can be considered tax fraud, especially when returns are not filed for more than 12 months or the total or partial payment of contributions is omitted.

In these cases, penalties may include:

• Imprisonment from three months to nine years, depending on the defrauded amount.
• Investigation by the tax authority.

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