Samordningsnummer or Personnummer: Which One You Actually Need

Almost every problem an arrival has in Sweden traces back to a number. Which number you are entitled to depends on one thing above all: how long you intend to stay.

The dividing line is one year

A personnummer, a personal identity number, comes with registration in the Swedish Population Register. Registration normally requires an intention to stay in Sweden for at least one year. Once issued, the Swedish Tax Agency states it stays the same for the rest of your life.

A samordningsnummer, a coordination number, is for someone who has never been listed in the Population Register. The Tax Agency describes it as being for people planning to stay less than a year who have a connection to Sweden and can show they need one.

What a coordination number is not

It is not a lesser personnummer and it is not a stepping stone you upgrade. It has the same ten-digit structure, which is exactly why people assume it works the same way and are then surprised when a bank, a housing company or a healthcare provider treats it differently. It is provisional: if you are later registered as living in Sweden, the Tax Agency replaces the coordination number with a personal identity number.

The identity levels most people have never heard of

Since 1 September 2023 coordination numbers carry a status of confirmed, probable or uncertain. Applying yourself and verifying your identity in person gets you “confirmed”. Numbers issued before that date are automatically marked confirmed if they are still active.

This matters more than it sounds. A number marked probable or uncertain is the reason some people find a bank will not proceed even though they have a number in hand. If you are being told no with a number that should work, check its status before assuming the institution is wrong.

They expire

A coordination number stays active for five years and then becomes inactive automatically. Reactivating it requires a new application and a fresh identity check. If you leave Sweden, notify the Tax Agency rather than letting it lapse silently.

Who requests it

You can apply yourself, or a public authority, university or college can request one on your behalf, for example in connection with a passport matter or F-tax approval. The route affects the identity level you end up with, so applying yourself and verifying in person is usually the stronger position.

The practical answer

If you are moving to Sweden with a permit or as an EU citizen exercising free movement, and you intend to stay a year or more, you are aiming at population registration and a personnummer. Do not settle for a coordination number because it is faster; you will be doing the work twice.

If you are here for a fixed short assignment, studying a single semester, or need to be paid or taxed in Sweden without living here, the coordination number is the correct instrument and there is nothing second-class about it.

Where employers get this wrong is defaulting the whole cohort to one or the other. It is an individual question and the answer changes with each person’s actual intention. See personnummer in Sweden and corporate immigration.

Source: Swedish Tax Agency (Skatteverket), pages on coordination numbers and personal identity numbers. Last reviewed 27 August 2026. General information, not individual legal or tax advice. Confirm your own position with Skatteverket or with us before acting.