Section 409.327 - Priority of security interests in deposit account The following rules govern priority among conflicting security interests in the same deposit account:
(1) CONTROL BY SECURED PARTY. A security interest held by a secured party having control of the deposit account under s. 409.104 has priority over a conflicting security interest held by a secured party that does not have control.(2) PRIORITY IN TIME OF CONTROL. Except as otherwise provided in subs. (3) and (4), security interests perfected by control under s. 409.314 rank according to priority in time of obtaining control.(3) PRIORITY OF BANK REGARDING DEPOSIT ACCOUNT. Except as otherwise provided in sub. (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) PRIORITY OVER BANK REGARDING DEPOSIT ACCOUNT. A security interest perfected by control under s. 409.104(1) (c) has priority over a security interest held by the bank with which the deposit account is maintained.