The Terms & Conditions explicitly stated that the Maximum Effective Interest Rate (EIR) on the Stash Account is 3% p.a. (current total interest) and 2.04% p.a. (revised total interest).
Current total interest
"Maximum Effective Interest Rate (EIR) on the Stash Account is 3% p.a. for deposits of S$100,000, provided the customer’s Monthly Average Balance (MAB) for the present calendar month is equal to or more than the MAB for the preceding calendar month."
Revised total interest with effect from 1 July 2025
"Maximum Effective Interest Rate (EIR) on the Stash Account is 2.04% p.a. for deposits of S$100,000, provided the customer’s Monthly Average Balance (MAB) for the present calendar month is equal to or more than the MAB for the preceding calendar month."