How does the rolling 180-day window work?
The most common mistake is thinking the 90 days reset with a new year or after a short trip out. They do not. On any day of your stay a border officer can mentally go 180 days back and count how many of them you spent in Ukraine. If it is more than 90, you are in violation.
Example. Thomas arrived on March 1 and stayed 90 days until May 29. He left for a week and wants to return on June 5. He cannot: within the 180-day window counted back from June 5 his 90 days are already used. He can legally return once part of his March days falls out of the window.
How to count your days correctly
- 1Write down all entry and exit dates for the last year from your passport stamps.
- 2Take the planned entry date and go 180 days back.
- 3Count every day spent in Ukraine inside that window. Entry day and exit day both count as full days.
- 4If the total including the planned trip exceeds 90, shorten the trip or move the date.
What happens if you overstay?
Overstaying is an administrative violation. The consequences: a fine at exit, and for a substantial or repeated violation an entry ban of up to three years. The violation stays in the databases and can complicate future visas and permits.
If you see your period running out and cannot leave, do not wait for the violation: contact the Migration Service about extending your stay or urgently arranging a ground for a residence permit. Legal options almost always exist while the period is not yet violated.
Official sources
Frequently asked questions
Does the limit reset after leaving Ukraine?+
No. Leaving does not reset the counter because the 180-day window is rolling. Days only 'expire' once they are 180 days old.
Does the 90/180 rule apply to all foreigners?+
By default to citizens of visa-free countries. For visa holders the period is defined by the visa, and for residence permit holders the rule does not apply at all.
How can I legally stay longer than 90 days?+
Arrange a legal ground and a temporary residence permit (work, study, family, business), or apply to the Migration Service for an extension of stay if you have valid reasons.
This article is general guidance, not individual legal advice.