My AGI filled out by the senior center for 2018 was from Box 5 on Form SSA-1099. That amount was $12,996.00 and my Medicare was $1,608. My 2018 PIN from Mountain View Senior Center was 10878 on Form 8879. Today for the stimulus refund, Turbo Tax stated to fill in any number for a PIN, so I did that. It would make more sense to tell seniors to use 2018's PIN which is 10878 (since I hadn't done a 2019 tax refund as my income is so low and I was just filing for the stimulus). Anyway, my 2019 Form SSA-1088 lists Box 5 as $13,362 net benefits inclusive of $1,636 for Medicare Part B.
