Apparently,you've been lucky in that you have not had to cancel a vacation that occurs late in your use year. That is when use year becomes important. If you cancel a vacation more than 31 days in advance of arrival, are past your banking deadline and cannot reschedule before the end of your use year, then the returned points expire at the end of your use year. If you were NOT past your banking deadline, you could at least save the current use year points (not the borrowed points) by banking them. True that it doesn't impact when you can make reservations. But actually, all of your points are already in your account for all use years. You match your desired vacation dates with your use year dates to determine the use year the points will be deducted from. If necessary, you can borrow points from the next use year or use points that were banked from the previous use year. Once banked or borrowed, a point must be used in the use year into which it was banked or borrowed. Otherwise they expire. Banking and borrowing are not reversible. I'm glad that this method has worked for you. I wouldn't recommend it to others, though. It has it's own set of risks and could result in the loss of points. IMO, it's best to take the time to understand all of the various rules around use year, points and reservations. Then you can make informed decisions and minimize your chances of losing points.