In 2026, the "90-day rule" in Poland refers to the Schengen Area regulation that allows citizens of "visa-exempt" countries (like the U.S., UK, Canada, and Australia) to stay for a maximum of 90 days within any 180-day period. This is a "rolling" window, meaning you must look back at the last 180 days from any given day to ensure you haven't exceeded the 90-day limit. This rule applies to the entire Schengen Zone as a single entity; days spent in France or Germany count toward your 90-day total in Poland. If you wish to stay longer than 90 days, you must apply for a National D-type Visa or a temporary residence permit before your initial allowance expires. Overstaying this limit in 2026 can lead to significant consequences, including heavy fines, immediate deportation, and a multi-year ban from entering the 29 countries that currently make up the Schengen Area.