I'm having the same error show up. I'm ready to file, but Turbo Tax keeps directing me back to the caculation for taxable social security benefits based on receiving a lump sum benefit in prior years. The message is:"Earlier year taxable social security benefits for taxpayer should not be more than $12471, 85% of the sum on Line B, earlier year SSA or RRB benefits for the taxpayer and spouse." Line B is the adjustments/exclusions claimed. However, the 85% should apply to social benefits, not adjustments/exclusions. I've gone through the Earlier YearTax Return Smart Worksheet in TurboTax and everything checks out, but I keep getting the error.
