86 Ill. Adm. Code 1070.107.110
Electronic Signature
Section 107
TITLE 86: REVENUE
CHAPTER I: DEPARTMENT OF REVENUE
PART 107 TELEFILING OF ILLINOIS INDIVIDUAL INCOME TAX RETURNS
SECTION 107.110 ELECTRONIC SIGNATURE
Section 107.110 Electronic
Signature
a) The taxpayer's signature code, consisting of the taxpayer's
social security number and Personal Identification Number (PIN), is to be used
in lieu of a written signature when filing returns, forms or schedules with the
Department via TeleFile.
b) The use of the PIN in combination with the social security
number has the same legal effect as if the taxpayer had signed the return, form
or schedule that are part of that TeleFile filing.
c) TeleFile filed returns, forms or schedules will be considered
unsigned unless both components of the taxpayer's signature code are received
by the Department as part of the TeleFile filing. (See 35 ILCS 5/503.)
d) The signature code is considered to be valid until:
1) The taxpayer notifies the Department that the signature code
has been compromised, or
2) The Department determines that the signature code has been
compromised.