For purposes of the provisions of IITA Sections 704 and
704A:
a) Date of withholding. Income
tax is withheld on the date payment of compensation is made to the employee.
(See IRS Revenue Ruling 74-126.)
EXAMPLE: An employer pays employees bi-monthly on the last
day of the month for services rendered through the
15th of the month and on the
15th of the month for services rendered from the
16th of the previous month through the end of the
previous month. Taxes withheld from compensation earned in the second half of
May and paid on June 15 are withheld on June 15 for purposes of determining
when the taxes must be reported and paid over to the Department.
b) Quarter-monthly period. A
quarter-monthly period ends on the 7th,
15th, 22nd and last day
of each calendar month. (IITA Section 704(b)) These dates are not affected by
weekends or holidays. That is, the 7th of a month is
the end of a quarter-monthly period, even if it is a Saturday, Sunday or
holiday.
c) Banking day. Saturdays,
Sundays, legal holidays and local bank holidays are not banking days. (IITA
Section 704(b))
d) Employer,
employee and compensation. The term "employer" includes all persons required to
withhold Illinois income tax; "employee" includes all persons from whom
Illinois income tax is required to be withheld; and "compensation" includes all
payments from which Illinois income tax is withheld or required to be withheld
under IITA Section 711(a). For purposes of determining when monthly,
quarter-monthly or semi-weekly payments must be made and whether an employer is
required to pay by electronic funds transfer, the amount of tax withheld or
required to be withheld by the employer shall include all taxes withheld or
required to be withheld under Article 7 of the IITA, other than taxes withheld
from domestic employees that are reported and paid pursuant to Section
100.7350.
(See IITA Section 711(a) and Section 2505-210 of the Department of Revenue Law
[
20 ILCS
2505/2505-210] .)
e) Look-back period. The term "look-back
period" for a calendar year means the 12-month period ending June 30 of the
preceding calendar year. For example, the look-back period for calendar 2008 is
the period from July 1, 2006 through June 30, 2007.