https://www.fdic.gov/regulations/laws/rules/5000-4500.html
5. Compensation
Depository institution employees, including tellers, may receive a one-time nominal fee of a fixed dollar amount for each customer referral for nondeposit investment products. The payment of this referral fee should not depend on whether the referral results in a transaction.
Personnel who are authorized to sell nondeposit investment products may receive incentive compensation, such as commissions, for transactions entered into by customers. However, incentive compensation programs must not be structured in such a way as to result in unsuitable recommendations or sales being made to customers.
Depository institution compliance and audit personnel should not receive incentive compensation directly related to results of the nondeposit investment sales program.