Illinois (IL) automatically grants a 6-month extension to October 15. If you owe them taxes, submit payment by April 15 to avoid penalties. You can either mail a check along with Form IL-501-I or pay online at MyTax Illinois.
1 Replies
JenniferM
New Member
Jun 1, 2019 8:33:58 PM
Illinois (IL) automatically grants a 6-month extension to October 15. If you owe them taxes, submit payment by April 15 to avoid penalties. You can either mail a check along with Form IL-501-I or pay online at MyTax Illinois.