I have classified 3 levels of war chests to store cash and unlock for deployment into different purposes. 
Primary
Savings Accounts, Money Market Fund   The first level is the most liquid cash in savings accounts that can be withdrawn from ATMs for daily cash expenses in coffees hops or paynow, paylah to pay cash to others instantly. It is also used to receive incoming cash flows from salary, allowances, dividends.
I do not use any of the high interest savings accounts i.e. DBS Multiplier, UOB One or OCBC 365 accounts that pay higher interest rates but dictate the credit of salary, the amount of spending through credit cards, purchase of insurance or endowment plans and loans because I usually have very low cash levels in my savings accounts and prefer freedom and flexibility in using any credit card to make purchases or pay bills.
As...