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June 6, 2019
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What do i need to mail with form IL-1040?

  • June 6, 2019
  • 1 reply
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before I mail my Form IL-1040, I want to make sure it is only two pages I send with our signatures. Do I need to attached all of our W-2's as well?
Best answer by Fern
If you are mailing your Illinois return in, you do need to attach copies of your W-2s. You generally need to send a copy of any form that documents Illinois taxes were withheld.

If you have social security or other retirement benefits, you need to attach a copy of page 1 of your Federal tax return. If you have taken credits on line 16-18, you will need to attach supporting forms. If you have payments and credits listed on lines 28 - 29, you should attach a supporting schedule. If you have any Schedule M items, you will attach a copy of the Schedule M for Illinois.

1 reply

FernAnswer
Employee
June 6, 2019
If you are mailing your Illinois return in, you do need to attach copies of your W-2s. You generally need to send a copy of any form that documents Illinois taxes were withheld.

If you have social security or other retirement benefits, you need to attach a copy of page 1 of your Federal tax return. If you have taken credits on line 16-18, you will need to attach supporting forms. If you have payments and credits listed on lines 28 - 29, you should attach a supporting schedule. If you have any Schedule M items, you will attach a copy of the Schedule M for Illinois.