2020 Schedule M IL-1040 Instructions - Illinois

2020 Schedule M IL-1040 Instructions General Information income received from Social Security benefits and retirement plans (including Illinois Teacher’s Retirement). Eligible retirement income should be subtracted on Form IL-1040, Line 5. What must I attach to Form IL-1040? If you enter an amount on Form IL-1040, Line 3 or Line 7, you must ................
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