i am entering each years amount in from ssa 1099. I can find the AGI on each old returm. i am not finding any 1099INT forms on old returns so assume i dont have any. I do not know how to tell how much the amount is for taxable social security benefits for each past year. The only prior year i have an ssa 1099 from besides 2018 is 2017 and do not know for that year either?? HELP
