I have read a few sources on this topic in these two days and I believe now I have a pretty good idea of how PPP loan forgiveness is to be reported on Form 1120S. Just want to make sure I do not miss anything.
(Schedule L and Schedule M-1 are not required in this tax return).
(1) Loan forgiveness amount goes on Form 1120S, Schedule K, Line 16b.
(2) Loan forgiveness amount goes on Schedule M-2, Column (a) Line 3 'Other additions' and use 'Expenses paid with forgiven PPP loan proceeds' as description.
(3) Loan forgiveness amount goes on Schedule M-2, Column (d) Line 3 'Other additions' and then back out on column (d) Line 5' other reductions'
(4) Loan forgiveness amount goes on shareholder's Schedule K1, Line 16 "Items affecting shareholder basis' with code (B) 'Other Tax-Exempt Income'.
(5) Attach a statement to the tax return in accordance with RP2021-48.
Have I listed everything that needs to be done? Please point it out if I have missed anything. Thank you in advance.