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It is now March 20th of 2021 and I am just now getting our 2019 taxes ready to file.  I'm retired, my wife, turned 65 in March of 2019, she had a Marketplace policy for January, February and 11 days in March.  Policy was shared with our 24yr old son, who earned $11,000 that year, and qualified for his own job related insurance policy April 1st, 2019.  My wife's business generates a Schedule C, and paid $510.44 to BCBS for January and February.  Her 1095-A reads as follows:

21 January   Column A: $1,588.44    Column B: 1,229.23    Column C: 1,078.00

22 February                 A:   1,588.44                    B: 1,229.23                    C: 1,078.00

23 March                      A:       563.64                   B:  1,229.23                   C:     382.52        My question is about the percentages on the next screen.  I keep getting a message: "Shared Pct policy allocations for a form 1095-A linked to a business Related Premiums Smart Worksheet below, are not supported."  I've played with all kinds of percentages going back and forth with our son's return, and "90%, 90%, 10%" on our return and "10%, 10%, 90%" on his does the least damage.  we would owe $252, and he would owe $300.  I started by putting in 100% for all three for us, and we would owe two or three thousand.  I really don't understand why we would owe so much, and I'm suspicious abut that "not supported" message perhaps not transferring our information correctly.  What say you?