An emergency fund is essential for financial security, allowing individuals to manage unexpected expenses without resorting to debt. Financial experts suggest that the fund should ideally cover three to six months of living expenses, with a recommendation to extend this to six to twelve months for those with unstable incomes. To build this fund, individuals can cut non-essential expenses, automate savings, and direct bonuses or tax refunds into the fund. It is advisable to track expenses regularly to ensure the fund remains adequate. For investment, experts recommend splitting the fund: 30-40% should be in immediate access options like savings accounts or bank fixed deposits, while 60-70% should be in low-risk debt options such as liquid mutual funds. This strategy ensures that the fund is both accessible and capable of generating returns, while avoiding high-risk investments that could jeopardize financial stability.