You can borrow up to ALL your points from the next use year. So if you have for example 200 points for 2003, you could borrow 50 points today, then next month borrow another 50, and two weeks later borrow another 30 and so on. You can borrow as often as you want until the whole 200 (or whatever you have) is gone. However, you cannot also borrow your 2004 points, 2005 points etc. You can only borrow one year ahead.