{"id":6956,"date":"2026-05-13T23:03:22","date_gmt":"2026-05-14T04:03:22","guid":{"rendered":"https:\/\/guerrerosantana.com.mx\/substance-of-tax-transactions-what-the-tax-authority-really-reviews-today\/"},"modified":"2026-05-13T23:08:44","modified_gmt":"2026-05-14T04:08:44","slug":"substance-of-tax-transactions-what-the-tax-authority-really-reviews-today","status":"publish","type":"post","link":"https:\/\/guerrerosantana.com.mx\/ja\/substance-of-tax-transactions-what-the-tax-authority-really-reviews-today\/","title":{"rendered":"Substance of Tax Transactions: What the Tax Authority Really Reviews Today."},"content":{"rendered":"<p>The tax authority no longer reviews only whether an invoice exists.<\/p>\n<p>Today, the real focus is on proving that transactions actually took place.<\/p>\n<p>Following the 2014 tax reform and the incorporation of Article 69-B into the C\u00f3digo Fiscal de la Federaci\u00f3n, the authority gained the power to presume the nonexistence of transactions when taxpayers fail to demonstrate that they had the assets, personnel, or infrastructure necessary to carry them out.<\/p>\n<p>In this context, the \u201csubstance\u201d of transactions has become one of the most important elements in any tax audit or review.<\/p>\n<p>&nbsp;<\/p>\n<h3>What does the substance of transactions mean?<\/h3>\n<p>Although the term is not expressly defined in the C\u00f3digo Fiscal de la Federaci\u00f3n, legal doctrine and criteria issued by the Suprema Corte de Justicia de la Naci\u00f3n define it as the existence of reliable evidence demonstrating that a transaction actually occurred.<\/p>\n<p>In practical terms:<\/p>\n<p>Having a valid CFDI is not enough.<\/p>\n<p>Taxpayers must be able to demonstrate that the service was actually provided or that the goods were genuinely delivered.<\/p>\n<p>&nbsp;<\/p>\n<h3>What the authority currently reviews<\/h3>\n<p>When a taxpayer becomes subject to verification powers \u2014such as field audits, desk reviews, tax refund reviews, or information cross-checks\u2014 the authority does not review only the formal validity of documentation.<\/p>\n<p>It also evaluates:<\/p>\n<ul>\n<li>Economic substance<\/li>\n<li>Operational capacity<\/li>\n<li>Evidence of execution<\/li>\n<li>Financial traceability<\/li>\n<li>Logical connection between the transaction, contract, and payment<\/li>\n<\/ul>\n<p>If the actual execution of the transactions cannot be proven, the authority may determine that the supporting documents lack evidentiary value and may assess tax differences, reassessments, or contingencies.<\/p>\n<p>&nbsp;<\/p>\n<h3>Protection: the substance support file<\/h3>\n<p>The substance of transactions is demonstrated through strong evidence in three fundamental areas:<\/p>\n<h4>1. Technical and operational capacity<\/h4>\n<p>Demonstrating that the company has:<\/p>\n<ul>\n<li>Assets<\/li>\n<li>Personnel<\/li>\n<li>Infrastructure<\/li>\n<li>Real technical and operational capabilities<\/li>\n<\/ul>\n<h4>2. Evidence of execution<\/h4>\n<p>Maintaining evidence that proves the transaction was actually performed:<\/p>\n<ul>\n<li>Reports and logs<\/li>\n<li>Emails<\/li>\n<li>Presentations<\/li>\n<li>Photographs and videos<\/li>\n<li>Studies, plans, or technical deliverables<\/li>\n<\/ul>\n<h4>3. Legal and financial support<\/h4>\n<p>Ensuring documentary consistency through:<\/p>\n<ul>\n<li>Agreements with reliable date<\/li>\n<li>Bank statements<\/li>\n<li>Banking traceability<\/li>\n<li>Clear linkage between the agreement, invoice, and payment<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Accounting is no longer just recordkeeping<\/h3>\n<p>Today, accounting serves as the language through which the substance of transactions is explained to the tax authority.<\/p>\n<p>To achieve this, it must meet three essential elements:<\/p>\n<ul>\n<li>Economic substance<\/li>\n<li>Identifiability<\/li>\n<li>Documentary integrity<\/li>\n<\/ul>\n<p>Simply presenting invoices or accounting records no longer guarantees deductions or tax credits if the authenticity of the transaction is challenged.<\/p>\n<p>&nbsp;<\/p>\n<h3>The burden of proof falls on the taxpayer<\/h3>\n<p>Even when a CFDI complies with formal requirements, this alone does not guarantee tax effects if the transaction is questioned regarding its substance.<\/p>\n<p>In these cases, the taxpayer bears the burden of rebutting any presumption that the transaction did not exist.<\/p>\n<p>&nbsp;<\/p>\n<h3>Conclusion<\/h3>\n<p>The substance of tax transactions has become the essential evidentiary standard within today\u2019s tax system.<\/p>\n<p>The difference between a valid transaction and a significant tax contingency no longer lies in paperwork, but in the ability to support the transaction with real, consistent, and traceable evidence.<\/p>\n<p>Companies that understand this do not operate merely to justify.<\/p>\n<p>They operate to support.<\/p>\n<p>&nbsp;<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignleft wp-image-6939 size-large\" src=\"https:\/\/ecjn54vsxmr.exactdn.com\/wp-content\/uploads\/2026\/05\/Luis-Rodrigo-Aguilar.png?strip=all&lossy=1&resize=800%2C450&ssl=1\" alt=\"\" width=\"800\" height=\"450\" srcset=\"https:\/\/ecjn54vsxmr.exactdn.com\/wp-content\/uploads\/2026\/05\/Luis-Rodrigo-Aguilar.png?strip=all&lossy=1&resize=800%2C450&ssl=1 800w, https:\/\/ecjn54vsxmr.exactdn.com\/wp-content\/uploads\/2026\/05\/Luis-Rodrigo-Aguilar-1024x576.png?strip=all&amp;lossy=1&amp;ssl=1 1024w, https:\/\/ecjn54vsxmr.exactdn.com\/wp-content\/uploads\/2026\/05\/Luis-Rodrigo-Aguilar-300x169.png?strip=all&amp;lossy=1&amp;ssl=1 300w, https:\/\/ecjn54vsxmr.exactdn.com\/wp-content\/uploads\/2026\/05\/Luis-Rodrigo-Aguilar-768x432.png?strip=all&amp;lossy=1&amp;ssl=1 768w, https:\/\/ecjn54vsxmr.exactdn.com\/wp-content\/uploads\/2026\/05\/Luis-Rodrigo-Aguilar-1536x864.png?strip=all&amp;lossy=1&amp;ssl=1 1536w, https:\/\/ecjn54vsxmr.exactdn.com\/wp-content\/uploads\/2026\/05\/Luis-Rodrigo-Aguilar.png?strip=all&amp;lossy=1&amp;ssl=1 1920w, https:\/\/ecjn54vsxmr.exactdn.com\/wp-content\/uploads\/2026\/05\/Luis-Rodrigo-Aguilar.png?strip=all&amp;lossy=1&amp;w=160&amp;ssl=1 160w, https:\/\/ecjn54vsxmr.exactdn.com\/wp-content\/uploads\/2026\/05\/Luis-Rodrigo-Aguilar.png?strip=all&amp;lossy=1&amp;w=480&amp;ssl=1 480w, https:\/\/ecjn54vsxmr.exactdn.com\/wp-content\/uploads\/2026\/05\/Luis-Rodrigo-Aguilar.png?strip=all&amp;lossy=1&amp;w=640&amp;ssl=1 640w, https:\/\/ecjn54vsxmr.exactdn.com\/wp-content\/uploads\/2026\/05\/Luis-Rodrigo-Aguilar.png?strip=all&amp;lossy=1&amp;w=1600&amp;ssl=1 1600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The tax authority no longer reviews only whether an invoice exists. Today, the real focus is on proving that t [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":6949,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Substance of Tax Transactions: What the Tax Authority Really Reviews Today.","_seopress_titles_desc":"Learn what the substance of tax transactions means, how the authority reviews it, and what evidence businesses need to reduce tax exposure in Mexico.","_seopress_robots_index":"","footnotes":""},"categories":[81],"tags":[],"class_list":["post-6956","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-all-posts-ja"],"_links":{"self":[{"href":"https:\/\/guerrerosantana.com.mx\/ja\/wp-json\/wp\/v2\/posts\/6956","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/guerrerosantana.com.mx\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/guerrerosantana.com.mx\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/guerrerosantana.com.mx\/ja\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/guerrerosantana.com.mx\/ja\/wp-json\/wp\/v2\/comments?post=6956"}],"version-history":[{"count":1,"href":"https:\/\/guerrerosantana.com.mx\/ja\/wp-json\/wp\/v2\/posts\/6956\/revisions"}],"predecessor-version":[{"id":6958,"href":"https:\/\/guerrerosantana.com.mx\/ja\/wp-json\/wp\/v2\/posts\/6956\/revisions\/6958"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/guerrerosantana.com.mx\/ja\/wp-json\/wp\/v2\/media\/6949"}],"wp:attachment":[{"href":"https:\/\/guerrerosantana.com.mx\/ja\/wp-json\/wp\/v2\/media?parent=6956"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/guerrerosantana.com.mx\/ja\/wp-json\/wp\/v2\/categories?post=6956"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/guerrerosantana.com.mx\/ja\/wp-json\/wp\/v2\/tags?post=6956"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}