Editorial intelligence only. Not tax advice. Engage a qualified US-Portugal tax professional.
The Core Principle: US Citizens Are Taxed Worldwide
US citizens are subject to US federal income tax on worldwide income regardless of where they live. Moving to the Algarve does not eliminate US obligations. Americans must continue to file US federal returns, comply with FBAR and FATCA reporting, and report all foreign income. The US-Portugal treaty and IFICI reduce the total burden — they do not eliminate US obligations.
What IFICI Is
Portugal's Non-Habitual Residency (NHR) regime was replaced in 2024 by the IFICI programme. New Portuguese tax residents can access a flat 20% tax rate on Portuguese-sourced employment and self-employment income for ten years. Foreign-sourced income — the most relevant category for American retirees — may be exempt from Portuguese tax entirely under the US-Portugal treaty.
Property Acquisition Taxes
| Tax | Rate | Notes |
|---|---|---|
| IMT (Transfer Tax) | 0–8% | ~6–7.5% for luxury properties |
| Stamp Duty (IS) | 0.8% | On full purchase price |
| IMI (Annual Property Tax) | 0.3–0.45% | Annual municipal tax on assessed value |
| Total acquisition costs | ~8–11% | Budget 10% above purchase price |
US Reporting Obligations
- FBAR (FinCEN 114): Required annually if aggregate value of foreign financial accounts exceeds $10,000 at any point. Penalties for non-filing are severe.
- Form 8938 (FATCA): Required for higher foreign asset thresholds. Separate from FBAR.
- Form 1116 (Foreign Tax Credit): Mechanism for offsetting Portuguese taxes paid against US liability on the same income.
The intersection of US worldwide taxation, the US-Portugal tax treaty, and IFICI requires a professional who has handled this situation for American clients specifically. A general US CPA without international experience will miss treaty positions that significantly reduce total liability.