In 2017 my wife got a lump sum social security payout for the years 2013 - 2017 and paid in 2017. I reported it on our 2017 return. Now I'm doing our 2019 federal return and Turbo Tax wont let me get passed the tax return review. It says: "Earlier year lump-sum Social Security Ws (2017): Earlier year taxable social security benefits for tax payer should not be more than $5023, 85% of the sum of line B earlier year SSA and RRB for the tax payer and spouse." First question what is line B on which form? Second is it telling me I should just enter the amount $5023 in that box (it can't be more than that because of the 85% limitation)? The actual amount of the lump sum payment was higher than that amount.
