Mexico's 2026 Tax Reform: What Cabo Property Owners Need to Know Now

What Changed on January 1, 2026

Mexico's 2026 Economic Package, approved by the Senate on October 29, 2025, introduced a series of tax and enforcement measures effective January 1, 2026. If you own property in Los Cabos — or are considering a purchase — several of these changes affect you directly. I'm going to break down what actually changed, what it means in practice, and what you should do about it.

The headline: SAT (Mexico's tax authority) got significantly more enforcement power, the government wants to bring offshore capital home at a 15% rate, and anti-money laundering rules for real estate now require identifying the real person behind every transaction. None of this means you should panic — it means you should have a Mexican tax advisor, and if you've been winging it, the window for that approach is closing.

Key Takeaways

• SAT's enforcement and audit powers were significantly expanded under the 2026 Economic Package — expect more scrutiny on foreign-owned property transactions, rental income reporting, and fideicomiso structures.
• A new capital repatriation program allows individuals and entities to bring legally sourced funds held abroad back to Mexico at a flat 15% income tax rate, with no deductions — potentially useful for foreign owners who've accumulated offshore rental income.
• Anti-money laundering rules now require identifying beneficial owners behind corporate structures, fideicomisos, and nominee arrangements in real estate transactions.
• Non-resident landlords face a 25% ISR withholding on gross rental income — but can reduce this to approximately 15–20% effective rate by electing the net income regime through a Mexican fiscal representative (requires an RFC).
• The 183-day rule remains in effect: spending 183+ days in Mexico in a calendar year can trigger Mexican tax residency, making your worldwide income subject to Mexican taxation.

SAT Gets Sharper Teeth

The most significant change isn't a new tax — it's how aggressively the existing taxes will be enforced. The 2026 reform, per BDO Global, strengthens SAT's capacity to audit, investigate, and enforce compliance in several ways:

• Digital invoicing crosschecks: SAT can now cross-reference CFDI (digital tax receipts) data more aggressively. If your rental management company issues invoices for your property but you're not reporting that income, the discrepancy is now flagged automatically.
• Information sharing: Enhanced information-sharing agreements between SAT, SRE (foreign affairs, which approves fideicomisos), and financial institutions mean your fideicomiso bank, your property manager, and SAT are increasingly connected.
• Third-party verification: SAT can now require third parties (banks, notarios, property managers) to verify income declarations during audits.

What this means practically: the "gray zone" where some foreign property owners in Cabo have operated — collecting rental income without an RFC, not filing Mexican taxes on that income, relying on the assumption that SAT wouldn't notice — is shrinking rapidly.

Capital Repatriation: The 15% Opportunity

The reform introduces a capital repatriation benefit that allows individuals and legal entities to return legally sourced funds maintained abroad as of September 8, 2025, by paying a final income tax of 15% with no deductions.

This is potentially relevant for foreign Cabo property owners who have:

• Accumulated rental income in offshore accounts
• Proceeds from property sales that haven't been properly reported
• Business income generated through Mexican corporations (SA de CV) that was distributed abroad

The 15% rate is a discount compared to standard rates (up to 35% for individuals). However, the key qualifier is "legally sourced" — this isn't an amnesty for illegal funds. If you have undisclosed rental income, consult a Mexican tax attorney before attempting to use this provision, because the disclosure itself creates a paper trail.

The 25% Rental Withholding — And How to Reduce It

This isn't new in 2026, but it's worth reviewing because enforcement is tightening. If you're a non-resident earning rental income in Mexico, the default is:

• 25% ISR on gross rental income — no deductions allowed
• Plus 16% IVA (VAT) on short-term rentals
• Plus 2–5% state lodging tax (BCS charges 3%)

On a property generating $5,000/month in gross rental income, the 25% ISR alone is $1,250/month — $15,000/year — before you deduct a single peso for maintenance, HOA fees, management fees, insurance, or depreciation.

The Net Income Alternative

Under Article 159 of the LISR (Mexico's income tax law), non-residents can elect to be taxed on net income instead of gross. Per PwC Tax Summaries, this requires:

1. Obtaining an RFC (Registro Federal de Contribuyentes — Mexican tax ID)
2. Appointing a Mexican fiscal representative (representante legal)
3. Filing annual tax returns in Mexico

Under the net income regime, you pay approximately 35% on net rental income after deductions — but those deductions (maintenance, HOA, property management fees, insurance, depreciation, mortgage interest) typically reduce your taxable base by 40–60%. Net result: your effective rate drops to approximately 15–20% of gross income, compared to the flat 25% on gross.

The election is made at RFC registration and cannot be applied retroactively within the calendar year. If you're currently paying the 25% gross rate, talk to your accountant about switching for 2027.

AML and Beneficial Ownership

The 2026 reform strengthens Mexico's anti-money laundering framework for real estate transactions. The most significant change for foreign buyers: every transaction must now identify the beneficial owner — the real person who ultimately controls and benefits from a property held through a corporate structure, fideicomiso, or nominee arrangement.

This means:

• If you hold property through a Mexican corporation (SA de CV), the beneficial ownership chain must be documented and disclosed.
• Fideicomiso trustees (banks) must verify and report the identity of all beneficiaries.
• Notarios conducting real estate closings must verify beneficial ownership as part of their due diligence.

For most foreign buyers who hold property in their own name via a standard fideicomiso, this changes nothing — you're already the identified beneficiary. But for those using multi-layered structures (a US LLC that owns a Mexican SA de CV that holds a fideicomiso), expect more documentation requirements at closing and during renewals. See our fideicomiso guide and SA de CV guide for structure details.

The 183-Day Residency Trap

This isn't new, but it's increasingly enforced. If you spend 183 or more days in Mexico during a calendar year, you may be considered a Mexican tax resident — making your worldwide income subject to Mexican taxation at progressive rates up to 35%.

For snowbirds and part-time residents who split their year between the US/Canada and Cabo, this is a real risk. Per Rio Times Online, the rule is straightforward: Mexico counts physical presence days, not work days. If you arrive October 1 and leave April 30, that's 212 days — well past the 183-day threshold.

Strategies to manage this:

• Track your days precisely — immigration records at SJD airport are timestamped
• If you're close to the line, spend November in the US/Canada to reset
• If you've already triggered residency, you may actually benefit from it (Mexican residents get a more favorable tax structure on rental income and capital gains)
• Consult both a US/Canadian and a Mexican tax advisor — the US-Mexico tax treaty prevents double taxation but requires proper filing

What You Should Do Now

1. Get an RFC if you don't have one. You need it to elect the net income regime, to comply with AML requirements, and to interact with SAT. Our RFC guide walks through the process.
2. Hire a Mexican CPA (contador) who speaks English. Budget $1,000–$2,500/year for annual tax filings. This is not optional if you're earning rental income.
3. Review your property structure. If you're using a multi-layered corporate arrangement, verify that beneficial ownership is properly documented.
4. Track your days in Mexico. If you're anywhere near 150+ days per year, you need to be deliberate about your schedule.
5. Evaluate the capital repatriation option. If you have undisclosed rental income in offshore accounts, the 15% rate may be your best available resolution — but get legal advice first.