The big shifts shaping US-side tax exposure in Portugal: the NHR regime closed to new applicants in 2024 (the successor IFICI regime is research-and-innovation-focused, not retiree-friendly), Portuguese non-resident capital gains tax at 28% on the full gain, and the US-Portugal income tax treaty (signed 1994, in force since 1995) handling most double-taxation. Purchase itself isn't US-taxable — basis is purchase price plus closing costs in USD at the transaction-date spot rate.
What's not taxable: the purchase itself
A US buyer of Portuguese property does not owe US tax on the purchase. The acquisition is a non-taxable event for US purposes — the buyer's cost basis is established at the purchase price plus closing costs (in US dollars, converted at the spot rate on the transaction date), and that basis sits on the buyer's books until the property is sold or otherwise disposed of.[IRS, basis rules for foreign real estate (Publication 551, Basis of Assets), 2026-04]
Portugal's IMT (transfer tax), Imposto do Selo (stamp duty), and other one-time acquisition taxes are not US taxes and do not generate a foreign tax credit at purchase. They are treated for US purposes as costs of acquisition added to basis, similar to US state-level transfer taxes.
For a €500,000 EUR purchase with €40,000 EUR in IMT and other one-time costs, the US dollar basis is the €540,000 EUR all-in cost converted at the transaction-date USD/EUR rate. If the rate at acquisition is 1.10 USD/EUR, the US basis is USD €594,000 EUR.
Annual reporting: FBAR and Form 8938
US persons who hold property in Portugal in personal name typically open a Portuguese bank account to handle property carrying costs (utilities, IMI, condomínio dues, any rental income flow). The bank-account threshold triggers FBAR and potentially Form 8938.
FBAR (FinCEN Form 114) is required of any US person with financial interest in or signature authority over one or more foreign financial accounts with aggregate value exceeding €10,000 EUR at any time during the year.[US Treasury FinCEN, Report of Foreign Bank and Financial Accounts (FBAR), 2026-04] The threshold is aggregate — Portuguese EUR-denominated bank accounts contribute to the threshold along with any other foreign accounts. A US person with a Portuguese checking account holding equivalent of €6,000 EUR for property carrying costs and a separate account holding €5,000 EUR for renovation reserves crosses the threshold and must file.
Form 8938 is required of US persons with specified foreign financial assets above thresholds varying by filing status and residency. For an unmarried US person filing from the US, the threshold is €50,000 EUR at year-end or €75,000 EUR at any point. For married filing jointly from US, €100,000 EUR and €150,000 EUR. For US persons living abroad (e.g., D7 residents in Portugal), the thresholds are higher (€200,000 EUR / €300,000 EUR single, €400,000 EUR / €600,000 EUR joint).[IRS, Form 8938 reporting thresholds and filing requirements, 2026-04]
Corporate-entity holding structures: Portuguese property is most commonly held in personal name by foreign buyers. Some buyers elect Portuguese corporate-entity structures (Sociedade por Quotas — Lda — is the typical SME structure) for asset-protection or estate-planning reasons. When the corporate-entity structure is used, the entity may be reportable as a foreign corporation (Form 5471) if the US person holds 10%+ ownership or is an officer/director. Form 5471 has substantial reporting depth and meaningful penalties for non-filing (€10,000 EUR per form per year minimum).[IRS, Form 5471 reporting requirements for US persons with foreign corporate holdings, 2026-04]
For property held in personal name (the simpler and more common structure), Form 5471 does not apply — only FBAR and Form 8938 on the associated bank accounts.
The closed NHR regime — what it means for new buyers
The Non-Habitual Resident (NHR) regime — which gave new Portuguese tax residents substantial preferences over a 10-year window — closed to new applicants in 2024 for most categories. The successor NHR 2.0 / IFICI (Tax Incentives for Scientific Research and Innovation) is much narrower — research and high-skill employment, not retirees.[Autoridade Tributária, NHR closure and IFICI framework, 2026-04]
Three buyer scenarios for 2026:
- Registered NHR before closure: existing benefits run through the original 10-year window. Consult your Portuguese tax advisor on the year-by-year framework for your income mix.
- New Portuguese tax resident in 2026+: NHR not available. Standard rates apply — global income reporting, 10%–48% progressive, treaty-based relief.
- IFICI-eligible: narrow eligibility, unlikely for typical retiree profiles.
For most US D7 retirees in 2026, model income under the standard Portuguese framework. The US-Portugal treaty provides relief on certain categories (notably US Social Security treatment for US persons resident in Portugal), but treaty relief is narrower than the historic NHR exemption.[US-Portugal Income Tax Treaty (signed 1994), treaty relief framework, 2026-04]
Rental income: reportable in both countries
US persons who rent out their Portuguese property — long-term lease or short-term Local Lodging (Alojamento Local) — owe Portuguese income tax on the rental income (28% flat rate option, or progressive rate option) and US federal income tax on the same income reported on Schedule E of Form 1040.[Autoridade Tributária, rental income tax framework for non-resident and resident property owners, 2026-04]
The double exposure is reconciled through the Foreign Tax Credit (Form 1116), which credits Portuguese income tax paid against US tax owed on the same income, dollar for dollar, up to the US tax that would have been owed.[IRS, Foreign Tax Credit (Publication 514), 2026-04]
In practice, the Portuguese 28% flat rate is comparable to the US marginal rate for higher-income filers — the foreign tax credit typically covers most of the US tax owed. For lower-income filers, the credit may fully cover with no residual US tax.
Local Lodging (Alojamento Local) — the regulated STR regime — has separate Portuguese registration requirements and operates under specific Portuguese tax provisions. STR-investment-focused buyers should engage Portuguese tax advisors specifically experienced with the AL regime; the calculations are more involved than long-term-rental treatment.
Depreciation: US persons depreciating Portuguese rental property under Section 168 use the 30-year recovery period for foreign residential rental real estate, vs. the 27.5-year period for US residential rental.[IRS, alternative depreciation system for foreign-use property under Section 168(g), 2026-04] The slower depreciation reduces annual deductions and can leave the US person with positive net rental income for US purposes even when the Portuguese-tax-basis income is closer to break-even.
Sale: capital gains in both countries
When a US person sells Portuguese property, the gain is taxable in Portugal and in the US.
Portuguese capital gains tax: for non-residents, Portugal applies 28% on the full gain (calculated as registered sale price minus registered acquisition cost minus deductible improvement costs, with limited inflation indexing for longer holds). For Portuguese tax residents, 50% of the gain is taxable at progressive rates (which can be more or less favorable depending on the resident's marginal rate).[Autoridade Tributária, capital gains tax framework on real estate sales, 2026-04]
US capital gains is calculated on the dollar-converted basis: cost basis converted to USD at acquisition-date FX rate, sale price converted to USD at disposition-date FX rate. The EUR/USD movement between acquisition and disposition can produce meaningful FX adjustments — a US buyer who acquired at 1.10 USD/EUR and sells at 1.30 USD/EUR has a USD gain that includes both real-estate appreciation and EUR appreciation.
The foreign tax credit applies to the Portuguese capital gains tax against the US capital gains tax. Because the Portuguese non-resident rate (28%) is higher than the US long-term capital gains rate (15-20% federal plus 3.8% NIIT for higher-income filers), the Portuguese tax typically more than covers the US tax owed — meaning the US person owes additional Portuguese tax that the FTC cannot fully credit (foreign tax exceeds US tax). For Portuguese tax residents (50% of gain at progressive rates), the relative position depends on the resident's marginal rate.
Section 121 exclusion
US homeowners are familiar with the Section 121 exclusion: up to €250,000 EUR (single) or €500,000 EUR (married) of capital gain on the sale of a primary residence excluded from US income tax. The exclusion is available on foreign-situs property if the standard requirements are met: the property must have been owned and used as the seller's primary residence for at least two of the five years preceding the sale.[IRS, Section 121 exclusion of gain from sale of principal residence (Publication 523), 2026-04]
For US persons who have moved to Portugal under D7 residency, established Portuguese residence as their primary residence, and lived there for at least two years, Section 121 can shelter substantial capital gain on sale. For US persons who maintained their primary residence in the US and used the Portuguese property as a second home or rental, Section 121 does not apply.
The Section 121 exclusion does not affect Portuguese capital gains tax — Portugal has its own primary-residence treatment with separate criteria (notably the rollover-relief provisions for Portuguese tax residents who reinvest sale proceeds in another Portuguese primary residence). For a US seller, the analysis is two-track.
Estate and gift tax
US persons gifting Portuguese property during life or transferring it on death face the standard US estate and gift tax framework, which applies to the worldwide estate of US persons regardless of where the property is located.[IRS, US estate tax on worldwide assets of US persons (Publication 559), 2026-04]
For 2026, the US estate tax exemption is in the multi-million-dollar range. Most US-person estates with Portuguese property under €5,000,000 EUR in total worldwide net worth are not in estate-tax-exposure territory.
Portugal does not impose an estate tax on the property at death for direct heirs (children, spouse, parents). Other heirs may face stamp-duty implications. The succession framework in Portugal applies forced-heirship rules (legítima) — a portion of the estate is reserved for direct descendants and surviving spouse regardless of will provisions. The EU Succession Regulation (Regulation 650/2012) allows non-EU testators to elect their national-law succession for Portuguese-situs property, which can override the forced-heirship default if properly elected in a Portuguese-recognized will.[EU Succession Regulation 650/2012, application to Portuguese-situs property, 2026-04]
US owners should execute a Portuguese-recognized will electing US-state-law succession (typically) and engage a Portuguese attorney with cross-border estate practice for the will preparation.
What a typical filing year looks like
For a US person who owns a Portuguese apartment (held in personal name), maintains a Portuguese bank account for property carrying costs, and rents the property occasionally on the Local Lodging regime, a representative annual filing package looks like:
- Form 1040 with Schedule E for rental income and expenses
- Form 1116 for foreign tax credit on Portuguese rental tax paid
- FinCEN Form 114 (FBAR) for the Portuguese bank account if it crossed the €10,000 EUR aggregate threshold
- Form 8938 if specified foreign financial assets crossed the applicable threshold
- Schedule B for interest from the Portuguese account
- Form 4562 for depreciation of the rental portion of the property (if applicable)
For Portuguese tax-resident US persons (post-D7 relocation), the filing is more involved — global income reporting on the US side, Portuguese-resident tax filing on the Portuguese side, treaty-based reconciliation. Cross-border-competent preparation typically runs €2,000 EUR-€5,000 EUR per year for residents.[Greenback Tax Services, fee schedules for US expat tax preparation, 2026-04]
For property held via a Portuguese corporate entity (Lda or other), the package additionally includes:
- Form 5471 if the US person is a 10%+ shareholder or officer/director
Where buyers commonly stumble
Three recurring failure modes:
- Planning around the closed NHR regime. Buyers who studied Portugal during NHR's active years sometimes plan around preferences that no longer apply to new applicants. Reset to the standard framework.
- Missing FBAR. A Portuguese EUR-denominated checking account counts as a foreign financial account. The aggregate €10,000 EUR threshold is easy to cross with property carrying costs.
- Underestimating FX impact at sale. EUR/USD movement between acquisition and disposition produces meaningful USD-basis gain even when EUR-denominated property values are flat — a 20% EUR appreciation on a €500,000 EUR property creates USD €100,000 EUR of US-side gain with zero real-estate appreciation. Track basis carefully.
For a quarterly read on Portugal post-NHR planning and US-Portugal treaty interactions, our newsletter covers what changes for cross-border buyers.
For broader country context, see /portugal/. For Portugal-side closing and process mechanics, see /portugal/how-to-buy-property/. For D7 residency that creates the Portuguese tax-residency consequences, see /portugal/d7-visa/. For the parallel Canadian-side framework, see /portugal/taxes-canadian-buyers/.
Disclaimer
This article is for informational purposes only and does not constitute tax advice. Tax laws change frequently and individual circumstances vary. Consult a qualified cross-border tax advisor before making decisions based on this information. CrossingHQ does not provide tax preparation, advice, or representation services.
Current as of 2026-06-26. We review tax content quarterly and update on rule changes. To report an error, contact us.