Mexican controversies to rise as anti-abuse clause inserted into legislation

International Tax Review is part of Legal Benchmarking Limited, 1-2 Paris Garden, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement

Mexican controversies to rise as anti-abuse clause inserted into legislation

pwc-logo-small.jpg

On September 8 the Federal Executive Branch delivered its proposed tax package for 2014, which includes an important change in the Federal Tax Code (FTC) related to the substance over form concept, which derives from the proposed incorporation of an anti-abusive clause in article 5 of the FTC.

Existing law

Article 5 of the current FTC provides the option to apply a “strict application” to interpret any provision that refers to the subject, object, basis and rate of a tax.

In the proposed changes, the main argument to include an anti-abusive clause in the article referred to, is that some unfair taxpayer practices related to the tax legislation have been highlighted, which harm the proportionality standard provided in the Mexican Constitution. Therefore while some taxpayers are not paying taxes accordingly, this tax burden falls into the remaining taxpayers.

According to the OECD, the term tax evasion is generally used to mean illegal arrangements where liability to tax is hidden or ignored, that is, the taxpayer pays less tax than he is legally obligated to pay by hiding income or information from the tax authorities.

The modification proposed is to add two paragraphs in the aforementioned article which includes the anti-abusive clause.

During the process of a tax audit, the tax authorities may challenge either the formal aspect, such as whether tax returns are submitted on time, or the substantive aspect, such as supporting documentation, or both.

It is common for the tax authorities to challenge various deductions, arguing mostly that expenditures do not comply with the strictly indispensable standard, a concept which is not even defined by law.

Therefore, as the substance over form concept is very ambiguous, if the modification is approved to article 5 of the FTC, taxpayers shall enhance its supporting documentation of their records, not only taking into account the formal aspect, but also, by having sound evidence demonstrating subjective elements, such as a direct economic benefit.

For example, if an event took place to promote the company’s products, the taxpayer shall tie the amount of the expenses made in relation to the increase in the sales generated by the event, but generally, such increase in the sales cannot be measured accordingly, since, how can the branding exposure be measured accurately?

We are expecting an increase in tax controversies during tax audits due to the freedom that the tax authorities will have in regard to their criterion about the “substance over form” concept. The approval of the tax package is expected in mid November.

By principal Tax Disputes correspondents for Mexico, Fernando Lorenzo (fernando.lorenzo@mx.pwc.com) and Laura Enriquez (laura.enriquez@mx.pwc.com), of PwC.

more across site & shared bottom lb ros

More from across our site

While it’s great that the OECD is alive to multinationals’ fears of being caught in a compliance trap, the ‘common understanding’ illustrates a worrying lack of readiness
Rising demand for specialist expertise has fuelled the growth in tax partner headcounts, Cain Dwyer found; in other news, Switzerland has been urged to reconsider pillar two
An OECD report on the taxation of the digital economy is expected by the end of 2026, according to the group of nations
Trophy assets are evolving from personal indulgences to structured investments, prompting family offices to prioritise tax efficiency, governance discipline, and cross-border compliance
As demand for complex, cross-border private client counsel spikes, Patrick McCormick sees opportunity in starting from scratch
As part of an exclusive global alliance, KPMG will become one of Anthropic’s ‘preferred consultants’ for private equity
In the second part of this series, the focus shifts to how taxpayers can manage ongoing risks across the lifecycle of cross-border structures
Jurisdictions have moved to ensure that multinationals are not punished for late GIR filings due to a lack of available filing portals or exchange relationships
HMRC’s push for unified tax adviser registration won’t prevent every instance of improper conduct, but it is good for taxpayers and the UK’s reputation
Elsewhere, the UAE’s tax office has issued an update on registration penalties and two firms have been busy making lateral hires
Gift this article