Here's what we found out about the OCBC fixed deposit for CPF OA funds. This is higher than the prevailing CPF OA interest rate of 2.5%. OCBC now allows you to make a 8-month fixed deposit with their CPF Ordinary Account (CPF OA) funds and earn 3.88% p.a.Įarlier, OCBC started offering a 12-month fixed deposit for CPF OA funds at 3.40% p.a.