Reg DD Truth in Savings (12 CFR 1030) With AI Deposit-Product Recommendations: The APY Formula the Rule Actually Prescribes, the Change-in-Terms Notice, and Where an AI Cross-Sell Crosses Into Deception
Reg DD is the deposit-side companion to Reg Z: it prescribes a single APY formula, requires specific account-opening and periodic-statement disclosures, and imposes a 30-day advance-notice regime for adverse changes in terms. The AI cross-sell that suggests a higher-yield product, the retention offer that promises a rate, and the chatbot that answers 'what's my rate?' are all Reg DD surfaces. Where the disclosures actually have to appear, and where an AI conversation crosses the line into a UDAAP problem.