(810 ILCS 5/9-327)
Sec. 9-327. Priority of security interests in deposit account. The following rules govern priority among conflicting security interests in the same deposit account:
(1) A security interest held by a secured party having control of the deposit account under Section 9-104 has priority over a conflicting security interest held by a secured party that does not have control.
(2) Except as otherwise provided in paragraphs (3) and (4), security interests perfected by control under Section 9-314 rank according to priority in time of obtaining control.
(3) Except as otherwise provided in paragraph (4), a security interest held by the bank with which the deposit account is maintained has priority over a conflicting security interest held by another secured party.
(4) A security interest perfected by control under Section 9-104(a)(3) has priority over a security interest held by the bank with which the deposit account is maintained.
(Source: P.A. 91-893, eff. 7-1-01.)