How do you say Congratulations in Polish?

The most common way to say "Congratulations" in Polish is "Gratulacje!"

You can also use:

* "Serdeczne gratulacje!" (Sincere congratulations!)

* "Gratuluję!" (I congratulate you!)

* "Szczęśliwego dnia!" (Happy day!) - Used for less formal occasions like birthdays or promotions.

The best choice depends on the context and the level of formality.