86 Ill. Adm. Code 424.150
Ordinances and Resolutions Imposing or Discontinuing a Tax
Section 424.150Â
Ordinances and Resolutions Imposing or Discontinuing a Tax
a)
An ordinance or
resolution imposing or discontinuing the Tax under the Law or effecting a
change in the rate of the Tax that is adopted on or after June 25, 2019 (the
effective date of Public Act 101-27), and for which a certified copy is filed
with the Department on or before April 1, 2020, shall be administered and
enforced by the Department beginning on July 1, 2020.
b)
For ordinances filed
with the Department after April 1, 2020, an ordinance or resolution imposing or
discontinuing the Tax or effecting a change in the rate of the Tax shall either:
1)
be adopted, with a
certified copy of the ordinance filed with the Department on or before the
first day of April. After the filing the Department will  proceed to
administer and enforce the Law as of the first day of July next following the
adoption and filing; or
2)
be adopted, with a
certified copy of the ordinance filed with the Department on or before the
first day of October. After the filing, after which the Department will
proceed to administer and enforce the Law as of the first day of January next
following the adoption and filing.
[55 ILCS 5/5-1006.8(f)].