My 2020 Federal refund was changed with this explanation: “We changed the amount of taxable Social Security benefits on your tax return because there was an error in the computation of the taxable amount”. I've reviewed the SS 1099R and the TurboTax “Social Security Benefits Worksheet”; the numbers match (don’t see any input errors). The “Earlier Year Lump-Sum Social Security Worksheet” also looks good. Any suggestions? Last resort will be to call the number on the “Adjusted refund…” letter and ask what was in error.
