Portugal, Costa Rica, Spain: Which Second Residency Actually Works for Americans Exiting the US Tax System

Portugal was, for most of the 2010s and early 2020s, the default first answer for Americans asking about second residency. The Non-Habitual Resident tax regime offered a flat 20% rate on Portuguese-source income and exemptions on most foreign-source income for ten years. Combined with the Golden Visa real estate route to residency and eventual citizenship, it was a complete package. Both have now materially changed.

The NHR regime was closed to new applicants effective January 1, 2024, and replaced with the IFICI regime — a narrower program focused on specific professional categories, researchers, and qualified investment activities. Most financially independent Americans who would have qualified under NHR do not qualify under IFICI. The Golden Visa real estate route was closed to residential property in 2023; qualifying investments now require venture capital funds, cultural contributions, or job creation. The Portugal package that circulates in most discussions online describes a version of the country that no longer exists in its original form.

Portugal still has a path — the D7 passive income visa for financially independent individuals — but it no longer comes with the tax regime that made it strategically compelling for the US exit. The D7 grants residency; it does not resolve your Portuguese tax exposure. Portugal taxes worldwide income for tax residents, and without the NHR shield, your US-source investment income may be taxable in Portugal at standard rates. This requires treaty analysis that was largely unnecessary when NHR was in play.

Costa Rica's Pensionado and Rentista residency programs remain among the most accessible for Americans. Pensionado requires a guaranteed monthly income of $1,000 from a qualifying source — Social Security qualifies. Rentista requires $2,500 per month in demonstrated passive income. Both grant legal residency with a path to permanent residency after three years and citizenship after seven. The programs are straightforward and the requirements are stable.

Costa Rica operates on a territorial tax system — meaning it taxes only income earned within Costa Rica. Foreign-source income is not taxed by Costa Rica regardless of your residency status. For Americans whose income comes from US investments, remote work for non-Costa Rican entities, or foreign business activities, this means effectively zero Costa Rican income tax exposure on that income stream. This is architecturally clean: you remove US tax obligations through the exit process, and your destination country does not add new obligations on the same income.

The limitation is the absence of a US-Costa Rica tax treaty. This means that US-source income paid to a former US citizen who is now a Costa Rican resident is subject to US withholding at statutory rates — typically 30% on dividends and other passive income — with no treaty to reduce that rate. For Americans with substantial US-source passive income who intend to renounce and then continue holding US assets, this matters significantly. Treaty-based withholding rate reductions — 15% on dividends in many treaties — are not available in Costa Rica.

Spain has a bilateral tax treaty with the United States that provides reduced withholding rates on US-source income paid to Spanish residents — 15% on dividends, 10% on interest. For Americans who will retain US-source investment income after renunciation, this treaty benefit is real and substantive. Spain also has a path to permanent residency after five years of legal residence and citizenship after ten.

The complication is Spain's residency and tax system. Spain's Non-Lucrative Visa — the primary route for financially independent Americans — prohibits working in Spain. It is a passive income residency. Spain taxes worldwide income for tax residents, including foreign-source income. The former Beckham Law flat tax regime, which offered a 24% flat rate on Spanish-source income and exemption of foreign income, has been modified — it is now primarily available for workers transferred to Spain by foreign employers, which covers fewer Americans than the original version did.

The net result: Spain offers real treaty benefits for Americans with US-source income post-renunciation, but it adds a Spanish worldwide income tax obligation during residency that requires separate analysis. For Americans with primarily US-source passive income who will remain in Spain as residents, the question is whether the treaty withholding savings outweigh the Spanish income tax exposure. The answer is asset-structure-specific and cannot be answered generically.