The MOS System in Poland in 2026: How to File a Residence Permit Application Online

Is it true that everything — including citizenship — now goes through MOS?

No. MOS handles only residence applications under the Aliens Act (ustawa o cudzoziemcach): temporary residence, permanent residence and EU long-term resident status. An application for Polish citizenship is not filed through MOS — that is a separate procedure under a different law (the Polish Citizenship Act), handled through the voivode: recognition as a Polish citizen (uznanie za obywatela) is decided by the voivode, and grant of citizenship (nadanie) goes through the voivode to the President of Poland. MOS does not touch these cases.

We put this caveat first on purpose: coverage of the MOS change often lumps "residence, settlement and citizenship" together, and people start looking for a citizenship form where there isn't one. If your goal is a passport, see our breakdown of all routes to Polish citizenship — MOS is not the channel.

What is MOS 2.0 and from when is it mandatory?

MOS (Moduł Obsługi Spraw) is the state online system of the Office for Foreigners (Urząd do Spraw Cudzoziemców) for filing residence applications. The current version launched on 27 April 2026; it is informally called "MOS 2.0" because an earlier version (MOS 1.0) existed, and accounts from it are not carried over — you create a new account.

The legal basis is the Act of 21 November 2025 amending the Aliens Act and certain other acts (Dz.U. 2025 item 1794), which made electronic filing through MOS mandatory, not optional, for the main residence categories.

Which applications are now online only, and which stay on paper?

Electronic filing through MOS is mandatory for three main categories:

The Office for Foreigners publishes the exact list of exceptions at mos.cudzoziemcy.gov.pl and gov.pl/web/udsc. If your ground is atypical (an ICT-posted employee, or filing from abroad), check your category before filing — for it, paper may be not only allowed but the only option.

What happens to a paper application filed after 27 April 2026?

A paper application in a MOS-mandatory category that reaches the voivodeship office after 26 April 2026 is left unexamined (pozostawione bez rozpoznania). Legally, the case never starts: the application is not reviewed, it does not extend your stay and it does not preserve your legal residence.

The trap to avoid: what counts is the moment the application reaches the office, not the postmark date. Posting a paper application on 25 April and relying on the postmark will not work — if the letter arrives at the voivodeship office on 28 April, it arrived in the electronic period and will not be examined. From 27 April, the only reliable route is MOS.

What do you need to file through MOS?

To log in to MOS you need a Trusted Profile (Profil Zaufany) — the state electronic-identification means you authenticate with. The application itself must be signed electronically: without a signature the system will not let you submit it. Three signing methods are accepted:

Practical takeaway: set up a Trusted Profile in advance, before filing — if you do not have one, start there, or you simply cannot log in to MOS. What a Trusted Profile is, how it differs from a qualified signature, and how to obtain each — see our separate article on the Trusted Profile and signature; it also explains why a free Trusted Profile is enough for most foreigner filings. The basic digital tools for newcomers (PESEL, meldunek, Trusted Profile) are collected in our glossary.

Supporting documents that require your handwritten signature can be signed by hand, scanned and attached; but the application itself is signed electronically by one of the three methods above.

How is your legal stay confirmed while the case is pending?

Your legal stay during processing is preserved on the same principle as before: if the temporary-residence application is filed on time (no later than the last day of your legal stay) and without formal defects, your stay is treated as legal until the decision becomes final. The statute states it directly:

"pobyt cudzoziemca na terytorium Rzeczypospolitej Polskiej uważa się za legalny od dnia złożenia wniosku do dnia, w którym decyzja w sprawie udzielenia zezwolenia na pobyt czasowy stanie się ostateczna" (Article 108(1) of the Aliens Act).

What changed technically: the confirmation used to be a stamp (stempel) placed in the passport at filing. Article 108, as amended, now provides for an electronic confirmation of filing — sealed with a qualified electronic seal, carrying a QR code, and delivered through MOS. So you receive proof of legal stay electronically in the system rather than as a physical stamp. That is easier to verify, but it means you need access to your MOS account and that confirmation at hand.

What changes for the employer — and why it is your risk?

If your residence permit is work-based, note that in MOS the employer is an active participant, not a bystander. The employer must electronically sign their part (confirmation of employment, working conditions) and acts through an individual link the system emails to them.

The practical consequence for you: an employer's delay stalls the legalisation of your stay. If they do not sign their part in time, the application does not proceed in full — and it is your deadline, not theirs. On work-based grounds it is worth agreeing in advance who signs the electronic part and by when, and confirming the link email actually arrived rather than landing in spam. How a basic work-based residence permit works — in a separate article.

When does online filing actually work in your favour?

There is one situation where MOS is objectively better than paper: when it comes down to the final days of your legal stay. A paper application "arrives" when it physically reaches the office — an electronic one is filed instantly, at the moment you submit, and that moment is recorded by the system. If the last day of your legal stay is today, filing a correct application through MOS today is realistic; hoping a paper letter arrives in time is not.

In other words, the change removes the very trap that used to cost people their deadlines — "sent on time, arrived late". In exchange there is a new requirement: have a Trusted Profile ready in advance and, for work cases, an employer who is engaged in the process. It is no harder than before, but the preparation has to happen before the last day, not on it.

Frequently asked questions

Can I still file a residence card application on paper after 27 April 2026? For MOS-mandatory categories (temporary residence on main grounds, permanent residence, EU long-term resident) — no. A paper application reaching the office after 26 April 2026 will be left unexamined. Exceptions apply to certain categories (in particular ICT and filing from abroad); check your category in advance.

Do I need a Trusted Profile to log in to MOS? Yes. You log in to MOS via state e-identification, which requires a Trusted Profile. The application itself is signed electronically — with a Trusted Profile, a qualified signature or a personal signature from an e-dowód. Set up a Trusted Profile before you start.

Is a Polish citizenship application filed through MOS? No. MOS is only for residence under the Aliens Act (temporary and permanent residence, EU long-term resident). Citizenship is handled separately, through the voivode, under the Polish Citizenship Act.

Will my account carry over from the old MOS? No. Accounts from the earlier version (MOS 1.0) are not migrated — you create a new account.

What about cases filed on paper before 27 April 2026? Applications that already reached the office before that date are processed under the previous rules. The mandatory electronic form applies to filings from 27 April 2026; for your specific case, confirm with the voivodeship office handling it.