86 Ill. Adm. Code 470.175
Meter Readings
Section 470.175 Meter
Readings
a) When a taxpayer distributes, supplies, furnishes or sells gas
for use or consumption and not for resale through meters, the charge for the
services furnished being dependent upon the quantities metered, and when the taxpayer
has followed the custom and usage prior to the effective date of the Act of
making meter readings with respect to any particular consumer each quarter,
each half-year, every four months or at the end of any period of time other
than each calendar month, the taxpayer will be permitted to follow its custom
and usage with regard to meter readings and will not be required to make meter
readings at the end of each calendar month.
b) When a taxpayer files returns and pays tax upon a basis of the
gross amount of billings or transactions, he or she should include in the
measure of the tax the total amount of service under the Act billed within the
period for which the return is filed, irrespective of the dates of meter
readings. When no services under the Act have been billed within any return
period, this fact should be so indicated upon the return.
c) When a taxpayer files returns and pays tax upon a basis of
gross receipts, he or she should include in the gross receipts the total amount
of receipts received during the period for which the taxpayer's return is filed
with respect to services furnished, irrespective of the time that the services
may have been furnished or meter readings made.