 Budan was capped for the Croatian U-18 team at the 1998 UEFA European Under-18 Football Championship (now U-19 event) and the 1999 FIFA World Youth Championship (now FIFA U-20 World Cup).Budan also played in 1999 UEFA European Under-18 Football Championship qualification.On 7 February 2007, Budan made his international debut for Croatia in a 2–1 friendly win against Norway, coming on as a 62nd-minute substitute for Boško Balaban.