86 Ill. Adm. Code 110.120
Oil Right Lessees and Producers
Section 110
Section 110.120 Oil Right
Lessees and Producers
a) Every lessee corporation, individual or unincorporated
business which leases oil or natural gas rights or which operates oil-producing
or natural gas-producing properties in Illinois shall make return of the real
property connected with such lease or the property it operates on Form No.
PTAX-186.
b) Form No. PTAX-186 shall be filed annually with the Chief
County Assessment Officer between the 1st day of April and the 1st day of June.