Where do you pay tax after moving in the EU?

EU membership and rights · Last reviewed: 2026-08-23

Residence is a connection, not an address

Tax residence does not automatically follow your address registration or your residence card. Countries typically look at where you live, where the centre of your vital interests lies, and how long you were present during the year. The thresholds and definitions differ from state to state; for Bulgaria the criteria sit in the personal income tax legislation, whose current text is published on the official legal portal. This page deliberately gives no day counts, because the threshold varies by country and can change.

When two countries both claim you

This arises most often in the year of the move: part of the year in the old country, part in the new one, with both sets of rules reaching you. The answer lies in the treaty between the two states, which sets out tie-breaker criteria in order: permanent home, centre of vital interests, habitual abode and, last, nationality. The sequence is not arbitrary, and working through it against your own facts usually shows which country prevails.

Different income, different country

Social security runs on separate rails

This is the point most often confused. Social security in the EU is coordinated under rules of its own, and the governing principle is that a person is subject to the legislation of only one member state at a time. You can therefore be tax resident in one country and insured in another — this is design, not error. Portable documents exist to show which legislation applies where someone works temporarily in another state.

What to do in the year of the move

1. 1

   Close off the country you are leaving

   Ending residence is usually a separate notification. An unclosed residence tends to resurface years later as a filing request.
2. 2

   Register in the new country

   In Bulgaria tax registration and identification run through the revenue agency and the administrative registers; filings and refunds do not start without them.
3. 3

   List your income by source

   Write down where each stream arises — salary, rent, interest, freelance work. Treaty articles apply by type of income, not by person.
4. 4

   Keep the paperwork

   Residence certificates, withholding statements and returns are the basis for any credit. Without documents, relief is generally refused.
5. 5

   Know the route if a dispute arises

   Where two administrations tax the same income, the mutual agreement procedure under the treaty and the EU dispute resolution mechanism are available.

A note for arrivals from outside the EU

Where the other country is not an EU member, coordination rests on bilateral instruments instead: a double taxation treaty and, separately, a social security agreement. How income arising there is declared once you are resident in Bulgaria, and how tax withheld there is taken into account, depends on the text of those instruments rather than on EU rules.

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