I do this all the time. I tend to use my points from the next year for the current year. This way I'm always ahead in that I don't have to worry about banking points and if I happen to get hit by a bus, I've maximized my points usage before my demise. 😛So right now, for my 2017 trips, I will be using my points from 2018. For my trips in 2016, I already booked them using my points from 2017.