I have had jerky I made sit in a large jar for 5 years with no issues. It had gotten packed up when I moved and I found it. Opened the jar and it was a little drier maybe but the flavor was good no mold or any off taste.
As long as you use cure and try to not have any fat in it, I would think it would last for many years, and if you can lay it in the freezer even better. I have found sucked jerky in the freezer 2 years later and it was as good as the day it was made.