Check out hdb website for more information. For BTO, you are able to use cash and CPF to finance the purchase of your new home. Taking a hdb loan will allow you to loan up to 90%. You can use your cpf to fund your installment and that’s what many Singaporeans are doing. The pros of using cash is of course you save on the interest. The cons is that the opportunity cost is higher and there will be cash flow risk. For cpf, if you use cpf, there will be accrued interest. Let’s say you take out 100k, with an interest rate of 2.5% a year, that is 2.5k worth of accrued interest. Please note that in the event that you sell off your property, you are required to return cpf the amount of cpf funds + accrued interest.