Any contributions during the month only start earnings dividend/interest on the last day of that month.
Irrespective the actual day the monthly contribution is deposited.
Thereon, dividend earning/interest is calculated daily based on your account balances.

For withdrawal, dividend for the withdrawal sum is only eligible up to the day prior to withdrawal day. No dividend will be given on the withdrawal day.

In a way, dividend/interest calculation is similar like a normal banking saving account for the withdrawal part.
But for deposit, the balance is only effective at the end of the month of deposit. Thereon, it is calculated based on daily based on your balances.

At the end of the calendar year, the dividend earned will be credited to your account balance and will be parted of your next year dividend/interest calculation.

maybe EPF should start buying insurance coverage for all its members (of course it won't be free, but again this will be a case where everyone gets the same group insurance coverage) and reduce the burden of government hospital. Because it is a insurance, one can get treatment from private hospital too.

There, this idea is better than what DAP wanted EPF to do to pay for government hospital expenses.

Of course must have minimum conditions. To be entitled to this coverage, EPF balance must be minimum 60K rm.