I made a mistake on last years 1120 form (Deductions for Pension plan). Note: we have a fiscal year starting 2/1. We inadvertantly included the prior years pension contribution with the current years contribution. This caused the deductions to be more than they should have been. The corp had a loss last year and now just not as big of a loss. So I need to fill out an 1120X for last year noting the before/after total decuction difference as well as the before/after taxable income (negative). No tax was owed and none still owed.
Question: as this affects the Schedule L balance sheet (liabilities and equity) as well as M-1 and M-2 do I need to include balance sheet/M1/M2 forms along with my 1120X filed with IRS? I thought the Fed/IRS doesn't care about the balance sheet, only (NY) would care which I have to file a NY amended return CT-3, etc.
This years 1120 needs to be based on the corrected 1120x amounts.
Thanks!