Moving to Europe does not make the IRS disappear.

The first truth

Americans still file with the US after moving abroad.

US citizens generally remain connected to the US tax system wherever they live. That means the European move should be planned with a US expat-tax professional before the residence route, property purchase and banking setup become real.

This does not automatically mean paying twice. It does mean the family should know which country can tax what, how treaty logic is expected to work, what reporting obligations appear and what timing should be avoided.

The local side

Europe adds a second tax system, not a replacement.

Each country decides tax residency differently. Days in country matter, but they are not the only factor. Home, family, center of life, employment, investment income, local registrations and treaty tie-breakers can all matter depending on the country.

That is why a move to France, Italy, Spain, Portugal, Greece or Monaco should not be framed as a visa question only. The residence route, property use and tax calendar sit together.

• France: powerful lifestyle and healthcare, but residence and estate planning need early coordination.
• Italy: attractive lifestyle and tax regimes for some new residents, but the timing has to be modeled.
• Spain: strong quality of life, with regional taxes and residency timing that need careful review.
• Portugal: a softer landing for many Americans, with tax rules that have changed and must be checked currently.
• Greece: residence and property routes can be attractive, but tax and remittance assumptions should be tested.
• Monaco: a narrow high-liquidity route where personal tax, housing, banking and French sequence must be coordinated.

The property trap

The house can create tax questions before the move is decided.

A property purchase can raise questions about ownership, rental income, local taxes, wealth reporting, inheritance and when the family becomes resident. A bank account opened for a deposit can also create US reporting duties.

The safest sequence is not romantic, but it works: tax review, residence route, bank readiness, FX plan, then property. That does not slow the dream down. It stops the dream from creating avoidable tax friction.

The team

Who should be in the room?

Before you choose

Ask these questions before moving to Europe.

• Which country would tax us if we spent the number of days we actually want there?
• What happens if we buy before becoming resident?
• Will the US advisor, US CPA and local tax specialist be aligned before the purchase?
• Which bank will accept the file as US citizens?
• What reports do foreign accounts and assets create for the US side?
• What should happen before December 31 of the year we move?

Related guides

Tax is connected to everything else.