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Reviewed on March 2026 by the Compass Abroad editorial team

Mexico vs Portugal Taxes: Head-to-Head for Canadian Property Owners

Mexico wins on annual property taxes (predial ~0.1–0.3% vs Portugal's IMI 0.3–0.8%) and overall cost of living. Portugal wins on capital gains (14% effective vs 25–35% in Mexico), pension withholding (10% treaty vs 15% in Mexico), and the IFICI residency tax regime. Your total tax burden depends on whether you rent, your pension income level, and how long you hold the property.

This is the most complete head-to-head tax comparison available for Canadians choosing between the two most popular non-US foreign property destinations. Every category compared with actual rates.

Key Takeaways

  • Mexico's purchase tax (ISAI) runs 2–5% of transaction value; Portugal's transfer tax (IMT) is 0–8% on a progressive scale — both countries add roughly 5–8% in total closing costs.
  • Annual property tax strongly favours Mexico: predial averages 0.1–0.3% of assessed value annually versus Portugal's IMI at 0.3–0.8% of cadastral value — a materially higher ongoing cost in Portugal.
  • Rental income tax in Mexico is 25% gross for non-residents (or progressive net-basis with an RFC number). Portugal levies 28% flat on gross rents for non-residents — both countries apply similar headline rates.
  • Capital gains treatment diverges significantly: Mexico applies 35% on net gain (with allowable deductions) or 25% on gross sale price. Portugal applies 28% for non-residents — but Portugal exempts main-residence gains under reinvestment rules.
  • Canada has a tax treaty with Mexico (Art. 18 reduces OAS/CPP withholding to 15%). Canada also has a treaty with Portugal (reduces withholding to 10% for pensions) — Portugal has the more generous pension treaty rate.
  • Portugal's IFICI tax regime (NHR replacement) offers a 20% flat rate on Portuguese-source income for 10 years — a significant structural advantage for Canadians who establish residency in Portugal.
  • T1135 obligations apply equally to both countries: any property costing over $100,000 CAD (excluding personal-use exemption) must be reported annually on T1135.
  • The total tax burden comparison depends heavily on whether you rent, whether you establish residency, and how much of your income is pension-based — there is no simple winner.

The 10 Tax Categories: Complete Comparison

Most Mexico vs Portugal comparisons focus on purchase price or cost of living. This one focuses exclusively on the tax layer — every levy you will encounter as a Canadian buying, owning, renting, and eventually selling in each country.

Mexico vs Portugal: full tax comparison for Canadian property owners (2026 rates)
Tax CategoryMexicoPortugalAdvantage
Purchase Tax (Transfer)ISAI: 2–5% of transaction value (state-level, varies)IMT: 0–8% progressive; 6.5% flat for non-primary investment propertyMexico (slightly) for lower-priced properties; roughly equivalent above €200K
Stamp Duty / Notary TaxISR stamp: 0.5–1.5%; notario fees: 1–2%Imposto de Selo: 0.8% on all transactionsRoughly comparable total closing cost
Annual Property TaxPredial: ~0.1–0.3% of assessed value/yearIMI: 0.3–0.8% of cadastral value/yearMexico — significantly lower ongoing tax
Rental Income Tax (non-resident)ISR: 25% gross OR progressive net (with RFC). Treaty with Canada.IRS: 28% flat on gross rental incomeMexico (with RFC number and net-basis filing)
Capital Gains (non-resident)35% net gain OR 25% gross sale — taxpayer choice28% on 50% of gain (14% effective rate)Portugal — 14% effective rate beats Mexico's 25–35%
Wealth / Net Worth TaxNone for non-residentsAIMI surcharge: 0.7% on properties >€600KMexico for high-value property owners
Inheritance / Estate TaxNo inheritance tax on direct family transfers in MexicoIS on inheritance: 10% for non-immediate family; 0% for spouses/childrenRoughly comparable (both low to nil for children)
OAS/CPP Withholding (treaty rate)15% Canada-Mexico treaty10% Canada-Portugal treatyPortugal — lower pension withholding
RRIF Withholding (treaty rate)15% Canada-Mexico treaty10% Canada-Portugal treatyPortugal
Residency Tax RegimeNo preferential regime for foreign retirees (some state-level exemptions)IFICI: 20% flat on PT-source income for 10 yearsPortugal — IFICI is a major structural advantage

Purchase Tax: ISAI (Mexico) vs IMT (Portugal)

Mexico's property transfer tax is called the ISAI (Impuesto Sobre Adquisición de Inmuebles). It is a state-level tax — rates vary by state. In Jalisco (Puerto Vallarta), ISAI is 2% of transaction value. In Quintana Roo (Riviera Maya, Cancun, Tulum), it is 3%. In Baja California Sur (Cabo), approximately 2%. In Yucatán (Mérida), approximately 2–3%. Total closing costs in Mexico typically run 5–8% including notario fees, ISAI, and bank trust (fideicomiso) setup.

Portugal's transfer tax is the IMT (Imposto Municipal sobre as Transmissões Onerosas de Imóveis). It operates on a progressive scale: 0% below €92,407 for primary residence; a flat 6.5% for investment and non-primary-residence properties above €92,407. Non-residents purchasing holiday homes or investment properties almost always pay 6.5% IMT. Portugal also levies an 0.8% Imposto de Selo (stamp duty) on top. Total Portugal closing costs typically run 7–10% including IMT, Imposto de Selo, notary, and legal fees.

Verdict:Roughly comparable. Mexico may be slightly cheaper for lower-priced properties; Portugal's flat 6.5% rate is predictable. Both countries have significant closing costs that must be budgeted.

Annual Property Tax: Predial (Mexico) vs IMI (Portugal)

This is the starkest difference between the two countries. Mexico's predial is among the lowest in the world. A $300,000 USD condo in Puerto Vallarta might pay $400–$800 USD/year in predial. A $500,000 USD property in Los Cabos might pay $800–$1,500/year. Assessed values (base taxable values) in Mexico are typically 30–50% below market value, and the rate itself is only 0.1–0.3%. Moreover, many Mexican municipalities offer 10–30% discounts for early payment in January.

Portugal's IMI is substantially higher. A €300,000 apartment in Lisbon might pay €1,500–€2,400 per year. The rate for urban buildings runs 0.3–0.8% depending on municipality — Lisbon is approximately 0.3%, but many Algarve municipalities are higher. Additionally, Portugal levies the AIMI (Adicional ao IMI) — an additional surcharge of 0.7% on properties with cadastral value above €600,000 (or 1% above €1,000,000). For Canadians buying premium Algarve villas, the AIMI can add thousands of euros annually.

Verdict: Mexico wins clearly. Annual property tax in Mexico is often 3–5× lower than Portugal for comparable-value properties.

Rental Income Tax: ISR (Mexico) vs IRS (Portugal)

Both countries tax non-resident rental income — the mechanism differs. In Mexico, the default for non-residents is a 25% withholding on gross rental income (remitted by the tenant or, in the case of Airbnb, collected directly by Airbnb and remitted to SAT). However, if you obtain a Mexican RFC (Registro Federal de Contribuyentes — Mexican tax ID), you can elect to be taxed on the net basis at progressive rates, often resulting in an effective rate of 10–20% after deductions for property management, maintenance, insurance, and depreciation.

Portugal levies a flat 28% on gross rental income for non-residents. Unlike Mexico, there is no straightforward mechanism for non-residents to file on a net basis and access deductions. The 28% applies to your gross receipts before expenses. If you establish Portuguese tax residency (D7 Visa), you can deduct expenses and be taxed at the progressive IRS scale, which can be lower than 28% depending on your total income.

In Canada, you report the gross foreign rental income, deduct allowable expenses on Form T776, and claim the foreign tax paid as a Foreign Tax Credit on Form T2209. Both countries trigger this Canadian reporting obligation.

Verdict: Mexico wins if you obtain an RFC and file on a net basis. Otherwise, roughly comparable headline rates (25% gross vs 28% gross).

Capital Gains: Mexico vs Portugal

Capital gains treatment is Portugal's biggest tax advantage over Mexico for long-term property holders. Mexico gives non-residents a binary choice: pay 25% of the gross sale price (no deductions), or pay 35% on the net gain (purchase price + inflation adjustment + allowed improvements). For most appreciating properties, the 35% net option is lower. The notario at closing calculates and collects this tax.

Portugal applies a much more favourable structure: non-residents pay 28% on only 50% of the gain — an effective rate of 14%. No exemption for reinvestment (that exemption only applies to primary residences for Portuguese residents). So if you buy a Lisbon apartment for €250,000 and sell for €400,000, your Portuguese CGT is: 28% × (€150,000 × 50%) = 28% × €75,000 = €21,000. In Canada, you report the same gain and claim the Portuguese tax as a foreign tax credit.

Verdict:Portugal wins clearly. The 50% CGT exemption for non-residents produces an effective rate of ~14% vs Mexico's 25–35% range.

Canadian Pension Withholding: Treaty Rates Compared

Both Mexico and Portugal have tax treaties with Canada that reduce the standard 25% non-resident withholding on OAS, CPP, and RRIF income. The Canada-Mexico Tax Convention (Article 18) sets a 15% rate. The Canada-Portugal Tax Convention (Article 17) sets a 10% rate. Portugal's treaty is more generous.

To access the reduced treaty rate, you must file Form NR301 (Declaration of Eligibility for Benefits under a Tax Convention) with Service Canada before you receive your first payment. Without this form, the standard 25% applies by default. The treaty rate reduction applies to OAS, CPP, and employer Registered Pension Plans (RPPs).

Practical impact: On $40,000/year in combined OAS+CPP+RRIF income: Portugal (10%) = $4,000/year withholding; Mexico (15%) = $6,000/year withholding; No treaty (25%) = $10,000/year withholding. Portugal saves $2,000/year versus Mexico on pension withholding alone. Over a 20-year retirement, that is $40,000.

T1135 Obligations: Same Rules Apply to Both Countries

T1135 (Foreign Income Verification Statement) obligations are country-agnostic — the rules are identical whether you own in Mexico or Portugal. The form is required if your specified foreign property exceeds $100,000 CAD in adjusted cost base and is not exclusively personal-use. Property used exclusively for your personal vacations (zero rental use) is exempt regardless of value.

For Canada's foreign tax credit (Form T2209), both Mexico and Portugal are treaty countries — taxes paid in either country reduce your Canadian tax dollar-for-dollar up to the Canadian tax owed on that income. The treaty prevents double taxation in both directions.

Related reading: T1135 Compliance: What Happens If You Don't File? and Canadian Tax Guide for Foreign Property.

Key Facts for Canadian Buyers

Mexico purchase tax (ISAI)
2–5% of transaction value (varies by state)(Mexican state tax codes)
Portugal transfer tax (IMT)
0–8% progressive scale; 6.5% flat for non-primary-residence properties over €92,407(Portuguese Tax Authority (AT))
Mexico annual property tax (predial)
~0.1–0.3% of assessed value/year(Mexican municipal tax offices)
Portugal annual property tax (IMI)
0.3–0.8% of cadastral value/year (urban); 0.8% rural(Portuguese AT 2026)
Mexico rental income (non-resident, no RFC)
25% of gross rents withheld(LISR Art. 158)
Portugal rental income (non-resident)
28% flat on gross rental income(IRS (Portuguese) Art. 71)
Mexico capital gains (non-resident)
25% of gross sale price OR 35% of net gain — taxpayer choice(LISR Art. 160)
Portugal capital gains (non-resident)
28% on 50% of the gain (50% exemption applies)(IRS Art. 43 + Art. 72)
Canada-Mexico OAS/CPP treaty rate
15% (vs 25% standard NR withholding)(Canada-Mexico Tax Convention Art. 18)
Canada-Portugal OAS/CPP treaty rate
10% (reduced from 25% standard NR withholding)(Canada-Portugal Tax Convention Art. 17)

Mexico or Portugal — Which Is Right for Your Tax Situation?

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