How the Schengen 90/180 rule actually works

What the rule actually says

The Schengen Borders Code defines a short stay as “no more than 90 days in any 180-day period, which entails considering the 180-day period preceding each day of stay”. The same article says that “the date of entry shall be considered as the first day of stay” and “the date of exit shall be considered as the last day of stay”.

That is the whole rule. Everything else — the calculator, the stamp, the app — is a way of applying those two sentences to real dates. You can read the text in Regulation (EU) 2016/399.

The window moves with you

“Any 180-day period” does not mean a semester, a calendar year or a fixed period that starts when you first enter. It means that on every single day of your stay, you look at the previous 180 days and count how many of them you were inside the Schengen area.

This has a consequence that surprises people: there is no reset date. If you spent 60 days in the area and then left for two weeks, those 60 days are still inside the window when you come back, so you have 30 left, not 90. The old days start to leave the window one at a time, 180 days after each one happened.

The European Commission’s manual for the official short-stay calculator calls it a “moving” reference period: the calculation looks backwards at each day, whether that day is an entry, an exit or a check in the middle of a trip.

Which days count

• Entry and exit days count in full. A stay from 1 March to 3 March is three days, not two nights.
• Travel inside the area does not stop the clock. Moving from Spain to France is not an exit. The count is for the Schengen area as a whole.
• Iceland, Liechtenstein, Norway and Switzerland count. They apply Schengen rules even though they are not in the EU.
• Cyprus, Ireland and the United Kingdom do not count. They are outside the Schengen area, so days there do not use up the 90.
• Residence permits and long-stay visas are different. Periods of stay authorised by a residence permit or a long-stay visa are not taken into account under the short-stay rule.

Always check the date written on your entry stamp. It is the date the officer authorised, and it is the one that counts if there is a discrepancy.

A worked example

Suppose you enter on 1 March 2026 and leave on 29 April 2026. That is 31 days in March plus 29 in April: 60 days.

You come back on 1 July 2026. On that day, the 180-day window reaches back to early January, so all 60 days are still inside it. You have 30 days left. You stay until 30 July, which uses exactly those 30 days: 60 + 30 = 90. Staying one more day, to 31 July, would be day 91.

You leave on 30 July. If you want a full 90-day stay next time, you need to be outside for 90 uninterrupted days: from 31 July to 28 October. You can start a new 90-day stay on 29 October 2026. Coming back earlier is possible, but the days still inside the window reduce how long you can stay.

The mistakes that catch people out

1. Counting 180 days from the first entry. The window is not anchored to your first trip. It moves with every day you are there.
2. Assuming a weekend outside resets the clock. It does not. A short exit changes nothing about the previous days.
3. Counting only nights. Both the entry day and the exit day are days of stay.
4. Forgetting that overlapping trips count once. If two stays overlap, the shared days are not counted twice. The app handles this by counting occupied days, not by adding trip lengths.
5. Trusting a calculator over the stamp. A calculator is a planning aid. The border officer and the date on the stamp decide.

What Roamspan does

Roamspan applies the 90/180 rule on your iPhone. You log a trip with a country, an entry date and an exit date — or mark that you are still there — and the app shows the days used and the days left in the current window. The 90/180 count, the map and the history are free. The planner, which checks whether a future trip fits, and PDF export are part of Roamspan Pro at €24.99 per year.

There is no account. Dates, countries and notes stay on your device, and uninstalling the app deletes them. Roamspan is a planning tool, not legal advice, and border authorities always have the final decision.

FAQ

Does leaving the Schengen area reset the 90 days?

No. The 180-day window looks back from each day of your stay, so a short trip outside does not restart the count. Each day of an old stay stops counting only when it falls outside that window, one day at a time. There is no fixed reset date.

Do the day I arrive and the day I leave count?

Yes. Under the Schengen Borders Code, the date of entry is the first day of stay and the date of exit is the last day of stay. A trip from 1 March to 29 April counts as 60 days, not 59.

Do days outside the Schengen area count?

Days spent outside the Schengen area do not count. Days in Iceland, Liechtenstein, Norway and Switzerland do count, because they are part of the Schengen area. Cyprus, Ireland and the United Kingdom are not part of it.

What happens if I overstay the 90 days?

Border authorities decide. An overstay can lead to a fine, a refused entry or an entry ban. Roamspan is a planning tool, not legal advice, so confirm your situation with the immigration authority of the country you are in.

Sources

1. Regulation (EU) 2016/399 (Schengen Borders Code), Article 6 on the 90/180 rule.
2. European Commission: User manual for the short-stay “Schengen” calculator.

Rules and country list checked on 4 November 2026. This article is general information, not legal advice. Your passport stamp is what counts.

Know your days before you fly.

Roamspan keeps the running 90/180 count on your iPhone. The count is free, and there is no account.

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