Form St556X Amended Sales Tax Transaction Return printable pdf download
Form St 556. You can file it electronically using mytax illinois, a free online account. Web the illinois department of revenue dec.
You can file it electronically using mytax illinois, a free online account. Web the illinois department of revenue dec.
Web the illinois department of revenue dec. Web the illinois department of revenue dec. You can file it electronically using mytax illinois, a free online account.