My university (math major) offers the option to write and present a bachelor thesis instead of taking 3 courses. Due to my changing tracks (from applied maths to pure maths) I have lost my ability to present a thesis this June and will instead have to wait until next June. It will however mean that I will have to delay my graduation by at least a semester, if not a year. I would like to avoid that because a) I am quite fed up with my current institution and b) Delaying my graduation would come with a significant personal and financial cost.
Now that context has been provided, how will not doing a bachelor thesis affect my chances of getting into a good masters and then PhD program?