LFPDPPP Compliance Guide: What Your Company Needs to Know in 2026

What is the LFPDPPP and Why Should You Care?

The Federal Law on Protection of Personal Data Held by Private Parties (LFPDPPP, by its Spanish acronym) is the Mexican legislation that regulates how private companies collect, store, use, and share personal data. It came into effect in 2010, but in 2026 it is more relevant than ever — and most Mexican companies are not compliant.

Why should you care? Because fines range from 100 to 320,000 days of UMA (Mexico's measurement unit) — which in 2026 equals between MXN 11,300 and MXN 36.2 million. And that is without counting reputational damage, which in the social media era can be far worse than the fine itself.

The uncomfortable reality: according to INAI data (Mexico's National Transparency, Information Access, and Personal Data Protection Institute), investigations for LFPDPPP violations have increased by 45% between 2023 and 2025. The regulator is paying attention. The question is: is your company ready?

Who Does It Apply To?

The LFPDPPP applies to every natural or legal person of a private nature that processes personal data. If your company:

• •Has a customer database
• •Collects emails for marketing
• •Stores employee data
• •Uses contact forms on its website
• •Operates a CRM
• •Uses web analytics tools

...then it is subject to the LFPDPPP. It does not matter if you are a 3-person startup or a 3,000-person corporation. If you handle personal data of people in Mexico, the law applies.

Key Obligations Every Company Must Meet

#### 1. Privacy Notice

This is the foundational document. Every company must have a privacy notice that informs data subjects (the people whose data you collect) about:

• •Who is responsible for data processing
• •What personal data is collected
• •For what purposes it is used
• •With whom it is shared (transfers)
• •How they can exercise their ARCO rights
• •Whether cookies or tracking technologies are used

Common mistake: having a generic privacy notice copied from the internet. The notice must be specific to your company, your data, and your purposes. A generic notice does not protect you legally.

There are three types of notices: comprehensive (full), simplified (short version), and short (for limited spaces). Most companies need at least the first two.

#### 2. Consent

Before processing personal data, you need the data subject's consent. The LFPDPPP recognizes different types:

• •Tacit: when the data subject does not object after learning about the privacy notice
• •Express: when the data subject gives verbal, written, or electronic consent
• •Express and written: mandatory for sensitive data (health, sexual orientation, ethnic origin, biometric data, etc.)

What many companies do not know: consent must be free, specific, and informed. If you buried the consent in the fine print of a 30-page contract, it is probably not valid.

#### 3. ARCO Rights

Data subjects have four fundamental rights over their data:

• •Access: the right to know what data you have about them
• •Rectification: the right to correct inaccurate data
• •Cancellation: the right to have their data deleted
• •Opposition: the right to object to the use of their data for certain purposes

Your company must have a documented process to respond to ARCO requests within a maximum period of 20 business days. If you do not have this process, you are in non-compliance.

#### 4. Security Measures

The law requires you to implement administrative, technical, and physical security measures to protect personal data. This includes:

• •Internal data handling policies
• •Access control to databases
• •Encryption of sensitive data
• •Security incident response plans
• •Training for personnel who handle data

There is no specific standard in the law, but measures are expected to be proportional to the risk. A company handling financial data needs more robust measures than one that only has contact emails.

Common Violations and Their Consequences

Based on public INAI resolutions, these are the most frequent violations:

1. Not having a privacy notice (or having an incomplete one) The most basic and most common violation. Fine: 100 to 160,000 days of UMA.

2. Processing data without consent Using personal data for purposes not disclosed to the data subject. Fine: 200 to 320,000 days of UMA.

3. Not responding to ARCO requests Ignoring or responding late to data subject requests. Fine: 100 to 160,000 days of UMA.

4. Unreported security breaches If you suffer a breach and do not notify affected data subjects, the fine doubles.

5. International transfers without consent If you use cloud services with servers in another country (almost every company does), you need to inform and obtain consent for the international transfer.

INAI Statistics (2024-2025): - 2,340 investigation procedures initiated - MXN 187 million in fines imposed - 67% of sanctioned companies were SMEs - The sector with most violations: e-commerce, followed by financial services

How AI Changes the Compliance Landscape

Artificial intelligence introduces new challenges and opportunities for personal data compliance:

New risks: - AI models can process personal data in ways not anticipated in the original privacy notice - Training models with customer data may constitute data processing that requires specific consent - Generative AI systems can infer sensitive personal data from non-sensitive data - Automated decision-making (credit scoring, profiling) has specific legal implications

New opportunities: - AI can automate the detection of personal data in documents and systems - NLP tools can analyze privacy notices and detect compliance gaps - Automated systems can handle ARCO requests in minutes instead of days - AI can monitor compliance in real time and alert on deviations

What is coming: although Mexico does not yet have AI-specific regulation (like the EU AI Act), INAI has issued guidelines indicating that the LFPDPPP fully applies to the processing of personal data by AI systems. Companies that prepare now will be ready when specific regulation arrives.

7 Steps to Become Compliant

If your company has not done a formal compliance exercise, here is the path:

Step 1: Data inventory. Identify ALL personal data your company collects, stores, and processes. This includes CRM, emails, web forms, HR files, supplier databases, and any system containing information about individuals.

Step 2: Data flow mapping. Document how data flows within your organization: who collects it, where it is stored, who has access, with whom it is shared, and when it is deleted.

Step 3: Privacy notice. Draft (or update) your privacy notice based on the actual data you handle. Do not copy from the internet — your notice must reflect YOUR reality.

Step 4: Consent mechanisms. Implement clear processes to obtain and record data subject consent. This includes opt-ins on forms, checkboxes, and consent records.

Step 5: ARCO procedure. Create a documented process to receive and respond to ARCO requests. Designate a responsible person. Define response times. Test the process.

Step 6: Security measures. Implement protections proportional to the risk: encryption, access control, backups, incident response plan.

Step 7: Training and culture. Train all personnel who handle personal data. Compliance is not just a document — it is an organizational culture.

Do Not Wait for INAI to Knock on Your Door

Personal data compliance is not a luxury or a project you can postpone. It is a legal obligation with real financial consequences. And with AI transforming how companies handle data, the rules of the game are changing rapidly.

Companies that invest now in a robust compliance program will be legally protected, will build trust with their clients, and will be prepared for any future regulation.

Those that do not are playing Russian roulette with million-peso fines and reputational damage.

*Need to know if your company complies with the LFPDPPP? At OwnCX, our Legal & Compliance team performs complete data protection diagnostics. Book a consultation and identify your gaps before INAI finds them.*