By taking extra-curricular honours courses you earn an additional 30 credits on top of the 180 credits of your regular bachelor studies. Out of the 30 EC in total, 12-18 EC have to be obtained by taking interfaculty courses at VU, UvA or AUC, and another 12-18 EC by taking faculty honours courses. You are free in how you plan your honours courses over the two years (except for obligatory faculty courses).
Honours courses usually have a study load of 6 EC, which means that with 5 honours courses you earn 30 EC. However, there are also courses of 12 EC and there is a possibility within some faculty programmes to do an extended final thesis for 6 credits extra.
Use the steps below as a guideline.