Braided line can last for 4-5 years before needing to be replaced. You will need to cut away any line that gets damaged due to abrasion. Eventually after a few years you will have cut away enough line to the point where you dont have enough on the spool to fish effectively. This is when you will have to replace your braid. I have found braid lasts 1-2 years when fishing often and 4-5 years when you only fish occasionally.