Becoming tax resident somewhere new, properly

The relocation industry sells the permit. The permit is the part that gets you legally into the country, and it is genuinely the difficult, expensive, bureaucratic part — which is why it absorbs all the attention.

It is also not the thing that changes your tax position. A residence permit is issued by an immigration authority. Tax residence is asserted by a tax authority, on a different test, and evidenced by a different document. They are related in the way that a driving licence is related to owning a car.

This is the arriving checklist, in the order the steps actually have to happen.

The distinction, stated plainly

The second row of that last column is the whole point. When the country you left asks whether you really went, it is not asking to see a residence card.

The sequence

1. Establish the immigration right

Necessary first, because most of what follows requires you to be lawfully present and to have a local identifier. Nothing tax-related is available to someone who cannot legally stay.

2. Register with the tax authority and get a number

Every system has one — a tax identification number under whatever local name. This is the step founders skip, because nothing forces it in the first year and nobody chases them for it.

It is the step that creates you as a taxpayer in that country's records. Without it there is no file, and with no file there is nothing to issue a certificate from. Do it on arrival, not when you first need it.

3. Actually meet the domestic residence test

Registering does not make you resident. The statutory test does, and it varies enormously — a day count in some countries, a permanent home or centre-of-interests test in others, frequently several alternative routes any one of which is sufficient. Some measure the calendar year; some measure any rolling twelve months, which changes the arithmetic of a mid-year move completely.

Read the actual test for your destination before you plan the year. The 183-day rule is not a rule sets out how differently these are drafted, and why the number everyone repeats is usually the floor rather than the test.

4. Build the ordinary evidence, from day one

None of this is exotic. It is the paper trail of a person living somewhere, and its value is that it accumulates contemporaneously rather than being assembled later.

• A lease or deed in your name, for a home genuinely available to you
• Utilities and internet in your name, showing continuous consumption
• A local bank account, used for ordinary living expenses rather than held empty
• Health cover — public registration or a local policy
• A local phone contract rather than roaming
• Where applicable: municipal registration, driving licence exchange, school enrolments
• Day records, kept as you go

5. File a first tax return, even at nil

This is the one that surprises people, and it is close to non-negotiable. A filed return is what converts a registration into a demonstrable tax residence. In a territorial country with no local-source income, the return may show nothing owed — file it anyway. It is the artefact that proves you presented yourself as a resident taxpayer and were accepted as one.

6. Request the certificate of tax residence

Usually issued per year, often on a form specifying the treaty or purpose it is for. Request it for every year you will need to rely on, and request it while the year is recent — retrospective requests get harder, and some authorities will not issue one for a year in which you filed nothing.

7. Deregister from the country you left

Several countries maintain you as resident until you formally notify them of departure, and the notification is a specific procedure with a specific form. Failing to do it is the most avoidable way to remain resident in a country you no longer live in — and it hands that country the strongest possible position in any later argument.

Timing the move

The calendar decides more than the paperwork does, and three features of the destination's rules are worth checking before you book anything.

What to stop doing

Arriving well is partly about what you leave behind. In treaty terms, these are the facts the old country will point at, in roughly descending order of damage — the reasoning behind the ordering is in tie-breaker rules.

1. 1Keeping a permanent home available. An empty, furnished flat you could return to tomorrow is the single strongest fact against you. Let it properly or give it up.
2. 2Leaving the household behind. If the family stays, the move is substantially incomplete however many days you personally count.
3. 3Continuing to run everything from there. Frequent long visits, an office you still use, clients seen in person. This risks both personal residence and a taxable presence for the company — see paying international contractors without creating a permanent establishment for the same doctrine applied to people you hire.
4. 4Keeping the administrative centre of your life in place. Primary bank, doctor, car, memberships, correspondence address. Individually trivial, collectively a pattern.
5. 5Not deregistering where the rules require it.

The arriving checklist

It is perhaps a day of administration spread across a year, and it is the difference between a residence you can prove and one you merely assert. The founders who get this wrong are almost never the ones who did something aggressive. They are the ones who did the expensive part — the permit — and assumed the cheap part had happened by itself.