Mexico – Development Regarding Overpayments from 2018 Individual Returns

Mexico – Development Regarding Overpayments from 2018 I

This report covers new rules in Mexico concerning taxpayers who wish to recover a refund when an overpayment has occurred upon filing their income tax returns.



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Certain individuals qualifying as tax residents of Mexico are obligated to file an Annual Income Tax Return no later than April 30, 2019 (no extensions allowed).  Annual tax returns are filed electronically using the on-line software issued by the Mexican tax authorities for which each taxpayer should log in using his Mexican Tax ID number and tax passwords (Electronic Signature or “Contraseña”).

According to the 10th Resolution of Modifications to the Miscellaneous Regulations (“Décima Resolución de Modificaciones a la Resolución Miscelánea Fiscal para 2018”) published by the Mexican tax authorities on their website on April 1, 2019, and in the Official Gazette on April 10, 2019, there were updates to the conditions under which individuals will be eligible to participate in the “Automatic Refund Program,” when a 2018 Mexican Annual Tax Return showing an overpayment is filed no later than July 31, 2019.1


Depending on the amount of the overpayment as well as how and when 2018 Mexican Annual Income Tax Returns are filed, taxpayers may be required to apply a separate process to recover a refund, as they will not be eligible to participate in the “Automatic Refund Program.”

Considerations for Participation in Automatic Refund Program

The Mexican tax authorities’ rule in relation to overpayments derived from individuals’ 2018 Annual Income Tax Returns has been modified. It now states that individuals can participate in a facility known as “Automatic Refund Program” until July 31, 2019, if they meet the conditions noted below.


File the 2018 Annual Income Tax Return using the electronic signature called “e.firma” if the refund is between MXN 10,001 and 150,000.  However, taxpayers can use their tax password, called “Contraseña,” to file the Annual Income Tax Return in the following cases:

  • When the refund amount is less than MXN 10,001.
  • When the refund amount is between MXN 10,001 and 150,000, and the taxpayer’s Mexican bank account information is already loaded in the tax authorities’ on-line software (i.e., registered in previous filings).


Include the 18 digits number (“CLABE”) of the Mexican bank account of the taxpayer into which the refund would be deposited.

When the overpayment is not refunded (in part or in full), the taxpayer can resolve the issue employing the “Solve Inconsistencies” option.  Taxpayer ID number, Contraseña, and e.firma are needed.

Taxpayers who cannot participate in the Automatic Refund Program include those who:

  • have an overpayment above MXN 150,000;
  • request a refund related to years before 2018;
  • file the Annual Income Tax Return by using the Contraseña when obligated to file it with the e.firma;
  • file a refund request (refund notice) before obtaining the outcome of the overpayment from the tax authorities;
  • file the return or amended return without requesting a refund (the tax authorities’ on-line software allows various options regarding how the overpayment should be recovered (e.g., tax refund, offset it towards future income tax liabilities, or no selection));
  • file the return or amended return, showing an overpayment, after July 31, 2019.

The Automatic Refund Program establishes that taxpayers should file a request of refund at the tax authorities’ webpage, for which e.firma and Contraseña is needed when:

  • the taxpayer is not eligible to participate in the program;
  • the taxpayer is eligible, but the refund is not totally or partially refunded and the taxpayer has not elected to solve the inconsistencies when reviewing the outcome of the automatic refund (if enabled).

Steps Tax Authorities Take

On a separate note, strictly speaking, tax authorities have a 40 work-day period to review the refund request and, if they agree, make the deposit of the refund.  Nevertheless, once the refund request is filed by the taxpayer, tax authorities have a 20 work-day period to ask for additional information which should elicit a response by the taxpayer in the same term (the 20 working days).  

After this initial request, tax authorities can ask for further clarification regarding the information provided, within the 10 days after the taxpayer provided the initially requested information.  Taxpayers should respond to this request within the next 10 working days.  

When tax authorities request further information, the period between the date on which the information is requested and then provided by the taxpayer is not counted within the 40 work-day period.  In addition, if during the process the taxpayer is required to provide more information within a certain period of time and that is not subsequently provided within the stipulated timeframe, the initial request will be considered “null and void” and the process will need to be started again.


It is important to mention that for Mexican tax returns showing an overpayment, even though no late filing charges apply if filed after the April 30 deadline, tax authorities could impose a fine if, upon exercising their review, they detect that the return was not filed by the noted deadline.


1  For Resolucion Miscelanea Fiscal, click here.


For the Décima Resolución de Modificaciones a la Resolución Miscelánea Fiscal para 2018 y sus anexos 1-A, 14, 23, 25 y 25-Bis in the Diario Oficial, click here.



MXN 1 = USD 0.0525 

MXN 1 = CAD 0.071 

MXN 1 = GBP 0.406 

MXN 1 = EUR 0.047  

The information contained in this newsletter was submitted by the KPMG International member firm in Mexico.

© 2023 KPMG Cárdenas Dosal, S.C., Sociedad Civil Mexicana y firma miembro de la organización mundial de firmas miembros independientes de KPMG afiliadas a KPMG International Limited, una compañía privada inglesa limitada por garantía. Todos los derechos reservados. Prohibida la reproducción parcial o total sin la autorización expresa y por escrito de KPMG.

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GMS Flash Alert is a Global Mobility Services publication of the KPMG LLP Washington National Tax practice. The KPMG name and logo are trademarks used under license by the independent member firms of the KPMG global organization. KPMG International Limited is a private English company limited by guarantee and does not provide services to clients. No member firm has any authority to obligate or bind KPMG International or any other member firm vis-à-vis third parties, nor does KPMG International have any such authority to obligate or bind any member firm. The information contained herein is of a general nature and is not intended to address the circumstances of any particular individual or entity. Although we endeavor to provide accurate and timely information, there can be no guarantee that such information is accurate as of the date it is received or that it will continue to be accurate in the future. No one should act on such information without appropriate professional advice after a thorough examination of the particular situation.

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