There isn't a public document for a specific "HDB accrued desire ninety 27." This is likely an internal reference number or handle. Accrued fascination is actually a crucial component of HDB flat possession, especially for proprietors who used their CPF Everyday Account (OA) to finance their residence. Any time you market your HDB flat, you have to refund the principal amount of CPF useful for click here the downpayment, grants, and regular installments, combined with the accrued interest, again into your CPF account. This curiosity is the quantity your CPF discounts might have earned if they'd remained within your OA, calculated at the prevailing CPF OA fascination charge (currently two.5% for every annum) and compounded yearly. The refund is required, and It can be deducted from your sales proceeds. You could Check out the exact volume of CPF utilized and accrued desire about the CPF website's "Household Ownership" dashboard by logging in with all your Singpass.