There's no community file for a particular "HDB accrued curiosity 90 27." This is likely an interior reference number or handle. Accrued desire is often a important part of HDB flat ownership, especially for owners who used their CPF Ordinary Account (OA) to finance their assets. After you provide your HDB flat, it's essential to refund the principal degree of CPF employed for the downpayment, grants, and regular installments, combined with the accrued curiosity, again into click here your CPF account. This desire is the amount your CPF financial savings would have gained if they'd remained inside your OA, calculated at the prevailing CPF OA desire fee (at present 2.five% for each annum) and compounded yearly. The refund is required, and It truly is deducted from your revenue proceeds. You can Look at the exact quantity of CPF made use of and accrued fascination within the CPF website's "Household Ownership" dashboard by logging in with your Singpass.