Minimum Initial Deposit is simply the minimum amount of money required to open an account with BDO.
As you can see in the table below (second column from left), the minimum initial deposit varies depending on the type of savings account.
The higher the interest rate (as in the case of Optimum Savings), the higher the required initial deposit.
Keep in mind that the initial deposit is part of your savings, not a payment to BDO so you can open a savings account with them.
Go to the main article: How to Open a BDO Savings Account in the Philippines