Croatia will adopt the euro on 1 January 2023. You can exchange up to
100 kuna banknotes and 100 kuna coins per transaction, free of charge.

Detailed terms of changeover https://www.ecb.europa.eu/euro/changeover/croatia/html/index.en.html

🐦🔗: https://n.respublicae.eu/ecb/status/1604055417381855234