The controversial EES entry/exit system is due to go fully live on April 10 but a number of European countries are considering delaying the system and even lifting it during the peak summer months to avoid airport chaos at border controls for British travellers and other third-party visitors to the Schengen Area.
And it appears that the combination of the EES and the 90-day rule is already proving confusing and catching many Britons out. George Cremer, a software developer and digital nomad who founded Schengen Simple in 2022 after he became frustrated with the limitations of his complex travel spreadsheet – and the lack of accurate tools available to track the EU’s 90/180-day rule told the Bulletin that Since EES went live in October 2025, enforcement has changed completely.
“Previously, border officials had to manually check passport stamps to calculate stays, which was time-consuming and meant a lot of overstays fell through the cracks. Now every entry and exit is tracked biometrically and flagged automatically. The system has already caught 4,000 overstayers in its first few months.
“We see download spikes every time there’s a major announcement around EES or border enforcement. Awareness has been growing steadily since Brexit, and each new measure brings in a wave of travellers who realise they need to take compliance seriously.”
The rolling window confusion
“Most people think the 90 days work like a visa stamp: use up your days, leave, and the clock resets. It doesn’t. The 90/180 rule uses a rolling window, so every single day, the system looks back 180 days and counts how many of those you spent in the Schengen Area. A week in Portugal in January quietly eats into your summer allowance.
Common mistakes
1. “I left for two weeks so my days reset” – They don’t. Leaving and re-entering doesn’t reset anything. The window just keeps rolling.
2. “Each country tracks separately” – Especially common with Americans. All 29 Schengen countries share one 90-day pool. A weekend in Paris and a month in Spain are counted together.
3. “The rule is 90 days per half year” – People assume it’s a fixed Jan-Jun / Jul-Dec split. It’s not. The 180 days are counted backwards from each individual day.
What makes Schengen Simple different
Most tools designed to track the rule only look backwards, counting days you’ve already spent. That’s essentially what a border official checks, whereas Schengen Simple is predictive. It analyses your travel history and future plans together, so you can see the maximum number of days you could stay on any given date while protecting trips you’ve already booked. That forward-planning element is what the EU’s own calculator can’t do. Most calculators rely on oversimplified logic, fail to account for future trips, and ultimately put users at risk of overstaying. Like many post-Brexit, George found himself subject to the strict Schengen stay limit. www.schengensimple.com
