(50 ILCS 45/60)
Failure to file penalty.
If no return is
filed before the issuance of a notice of tax deficiency or of
tax liability to the taxpayer, any failure to file penalty
may not exceed 25% of the total tax due for the applicable
reporting period for which the return was required to have
been filed. A local tax administrator may determine that the
failure to file a return was due to reasonable cause and
abate the penalty.
(Source: P.A. 91-920, eff. 1-1-01.)