Maybe 99.co can correct my interpretation if I am wrong. The accrued interest is not the amount being paid to CPF nor HDB and disappear. It is mentioned in the article that "On the other hand, if the property was sold at a market price, after paying off the outstanding loan, if the remaining balance is less than the amount of CPF savings to be returned, they would not have to top up the difference in cash." So it should not be considered as debt. It is the additional amount that should had been parked into my CPF account after house sales. This can be withdrawn by cash at 55 under their terms and conditions fulfilled, or given back to me for retirement as CPF Life Payout, or given to my beneficiary when I die. Is my understanding correct?