If you want to follow a Master's programme after completing your Bachelor's programme, you can already prepare yourself during your Bachelor's programme.
During your Bachelor's, there are a few moments during which you can think about your Master's choice. For example, when choosing your specialisation or electives.
Entry requirements Master's programme
It's wise to check the entry requirements of the Master's programme of your choice. You may be able to take a few electives in preparation. The Choose a Master page lists Master's programmes that fit in well with your Bachelor's programme.
Internship and Minor
An internship and Minor can also be a good preparation for a Master's programme. For some Minors, the Master's programmes are explicitly mentioned in the description of the Minor.
Your Tutor and your Study Advisor can advise you in making choices in your study programme.