Answer:
Take a look at your state's version of the UTMA, particularly the powers of the custodian. In the model version the custodian does not have the power to pledge the assets as collateral. If the statute does not give them the power, they cannot do it regardless of the loan's purpose.
As a fiduciary, a custodian has what is called "naked possession." Translated, that means they have possession of the assets, but no power. If you take a security interest in a UTMA, you have an unsecured loan.
First published on BankersOnline.com 08/4/03