The deadline may vary depending on the program. Limited number: January 15th. Courses with an open number: you are "safe" to enroll by May 1st, but some programs require a faster enrollment (March or April). Contact goingdutch to be 100% sure. These can vary depending on the program. For numerus fixus programs it is 15 January. For the other programs you are usually 'safe' when you apply before may first. But some programs want you to register before the first of April or even March. To be 100% sure, contact goingdutch!