Schengen compliance glossary
Plain-English definitions of the terms that come up when tracking employee travel against the 90/180-day rule.
Schengen Area
A group of 29 European countries that have abolished passport checks at their shared borders, plus four microstates with open borders to their neighbours.
The Schengen Area is not the same thing as the European Union, and conflating the two is the most common source of miscounted days. Twenty-nine states are full members. Four microstates — Monaco, San Marino, Vatican City and Andorra — are not formal members but have open borders with their Schengen neighbours, so time spent in them counts in practice.
Ireland and Cyprus are EU members that are not in the Schengen Area. Days spent there do not count towards the 90-day allowance. Norway, Iceland, Liechtenstein and Switzerland are in Schengen without being in the EU, and days there do count.
90/180-day rule
Non-EU visitors may spend at most 90 days inside the Schengen Area in any rolling 180-day period.
The rule applies to short stays for tourism or business. Since Brexit it applies to UK citizens, who were previously exempt as EU nationals.
The limit is 90 days of physical presence, not 90 days per trip and not 90 days per country. Days spent in France, Germany and Spain all draw down the same single allowance.
Rolling 180-day window
The 180-day period is measured backwards from any given day, not from a fixed start date. It moves every day.
This is the part people most often get wrong. The window is not a calendar period that resets on 1 January or on the anniversary of your first trip. To check any date, count back 180 days from it and total the days you were present in that span.
A practical consequence: your remaining allowance changes every single day even when you do not travel, because the oldest days continuously drop out of the back of the window. A position that was comfortable in March can be tight in June without a single new trip being taken.
Days used
The number of days of physical presence inside the Schengen Area within the current 180-day window.
Both the day of entry and the day of exit count as full days, regardless of the time you crossed the border. Arriving at 23:50 on Monday and leaving at 00:10 on Wednesday uses three days.
A single calendar day never counts twice, even if you visit two Schengen countries on it. If travel records overlap — a common artefact of importing from several sources — the day is counted once.
Days remaining
The 90-day limit minus days used. A negative figure means the limit has been exceeded.
Days remaining is only meaningful relative to a specific date, because the window moves. "42 days remaining" always means "42 days remaining as at this date".
ComplyEur bands this figure for quick scanning: 30 or more days remaining is treated as compliant, 10 to 29 as at risk, and fewer than 10 as high risk.
Overstay
Remaining in the Schengen Area beyond the 90 days permitted in the rolling 180-day window.
Consequences vary by member state and by the length of the overstay. They can include fines, a recorded entry ban, and complications for later visa or travel authorisation applications.
An overstay is assessed against the traveller, not the employer, but the disruption lands on the business: an employee barred from the Schengen Area cannot attend the site visit, the client meeting, or the project they were assigned to.
Entry ban
A formal prohibition on re-entering the Schengen Area, recorded against the traveller for a set period.
Entry bans are issued at the discretion of the member state that detects the breach, and the duration depends on the severity and circumstances. Once recorded, the ban applies across the Schengen Area rather than only in the issuing country.
A ban recorded electronically is materially harder to work around than a missed passport stamp was, because it is attached to a biometric record rather than to a physical document.
EES (Entry/Exit System)
The EU’s biometric border system, live since October 2025, which records every non-EU entry and exit electronically in place of passport stamping.
EES registers a traveller’s face and fingerprints on first crossing and logs each subsequent entry and exit automatically. It calculates days used against the 90/180 limit without relying on a border officer reading stamps.
For employers the practical change is that the margin for error has gone. Under stamping, a faded or missed stamp created genuine ambiguity. Under EES the authoritative record is electronic, complete, and cross-checkable — so a declared travel history that disagrees with it is a problem.
ComplyEur does not connect to EES and no commercial tool does. What these tools offer is a prediction of what the EES record will show, which is why the accuracy of your own trip data matters more than the software holding it.
ETIAS
A pre-travel authorisation that visa-exempt visitors, including UK citizens, must obtain before travelling to the Schengen Area.
ETIAS is an authorisation to travel, checked before boarding. It is separate from the 90/180 rule and does not change it: holding a valid ETIAS does not grant additional days, and it does not exempt anyone from the limit.
The two are frequently confused. ETIAS governs whether you may set off; the 90/180 rule governs how long you may stay once you arrive.
Type D (long-stay) visa
A national long-stay visa issued by a single Schengen state, which changes how time in that country is counted.
Days spent in the issuing country under a valid Type D visa or residence permit are generally not counted against the 90-day short-stay allowance, because the person is not present as a short-stay visitor.
This makes the arithmetic materially more complex, and it is a case where a general-purpose calculator — including ComplyEur’s — will mislead you. If your travellers hold long-stay visas or residence permits, use a tool built for immigration casework and take professional advice.
Earliest safe entry date
The first future date on which enough days have aged out of the rolling window to allow entry again.
When someone has exhausted their allowance, the position recovers automatically as old days pass out of the back of the 180-day window. The earliest safe entry date is the first day on which re-entry no longer breaches the limit.
It is a planning figure rather than a guarantee: it assumes the recorded travel history is complete and that no further trips are added in the meantime.
These definitions explain how the rules are applied in practice. They are not legal or immigration advice. Where a decision turns on interpretation rather than counting, take professional advice.