Go to the Bank Of Kimra (across the street from Rat's Place) and enter the passcode for one of the following bank cards to access that account with the corresponding amount of money:

Bank card, Passcode, Amount
Eliot's, 3532, $20
Kimra, 1008, $4000
Yucatan, 1861, $5700
Bermud, 1394, $6000