What is the Schengen visa and how does it affect expats traveling in Europe?

Master the Schengen 90/180-day rule: non-EU expats can travel border-free across 27 European countries for up to 90 days within any 180-day period. While a residence permit in one country grants visitor access to the others, overstaying triggers heavy fines and travel bans. Track your dates to stay compliant.