Each trust account referred to in rule 45.1 must be an interest-bearing or dividend-paying account in a bank, savings bank, trust company, savings and loan association, savings association, credit union, or federally regulated investment company selected by the law firm or lawyer in the exercise of ordinary prudence. The financial institution must be authorized by federal or state law to do business in Iowa and insured by the Federal Deposit Insurance Corporation or the National Credit Union Share Insurance Fund. Trust funds must be placed in accounts at credit unions only to the extent that each individual client's funds are eligible for insurance. Trust funds must be placed in accounts from which withdrawals or transfers can be made without delay when such funds are required, subject only to any notice period which the depository institution is required to observe by law or regulation.
Cli. Trust Acc. R. 45.3