How big should your emergency fund be?

An emergency fund is not an investment and it is not meant to grow. It exists so that a job loss, a hospital bill or a broken-down car does not force you to sell an investment at a bad price or borrow at a worse rate. Judged as an investment it looks like a waste of money. Judged as insurance against forced decisions, it is one of the highest-return things you can hold.

Months of expenses, not months of salary

The first correction most people need: the target is months of expenses, not months of income. If you take home ₹1.2 lakh and live on ₹70,000, six months is ₹4.2 lakh, not ₹7.2 lakh. Size it against the spending that would continue if your income stopped.

Include everything that does not pause: rent, EMIs, premiums, groceries, utilities, school fees, family support. Exclude what genuinely would pause — holidays, discretionary shopping, the SIPs you would suspend.

How many months is yours?

The right number depends almost entirely on how quickly your income could be replaced.

• Three months — dual-income household, both in demand, no dependants, no large EMI. A gap is inconvenient rather than dangerous.
• Six months — the default for a single salaried earner with dependants or a home loan.
• Nine to twelve months — self-employed, commission-heavy income, a niche role where the next job takes time to find, or a sole earner supporting several people.

If you are the only person earning in your household, take the higher end of whatever band you land in. The cost of overshooting is a slightly lower long-run return. The cost of undershooting is selling equity in a downturn to pay rent.

Where to keep it

The buffer needs to be available within a day or two, stable in value, and slightly annoying to reach. A savings account meets the first two and fails the third, which is why buffers kept in the salary account tend to quietly disappear.

A common arrangement is to split it: enough in a separate savings account to cover the first few weeks, and the remainder somewhere that takes a day to liquidate and pays a little more. What it must not be is equity, or anything with a lock-in or an exit penalty. An emergency fund that is only available if markets are cooperative is not an emergency fund.

You can compare what different places would pay on the same balance with the FD calculator, but do not let a small difference in rate push the money somewhere you cannot reach it quickly. Accessibility is the product here.

Building it without stalling everything else

Filling a six-month buffer from zero can take a year or more, and pausing all investing for that long is its own cost. A reasonable compromise: get to one month quickly, since that alone removes most small emergencies, then build the rest alongside a reduced SIP rather than instead of it.

Bonuses, tax refunds and arrears are the fastest route. That money has not yet entered your spending and never needs to.

Using it is not failing

People build a buffer and then refuse to touch it, putting the emergency on a credit card instead. That defeats the entire purpose. The fund is there to be spent on exactly this. Use it, then refill it as the next priority above new investing.

The one discipline worth keeping: a definition of emergency that does not stretch. Job loss, medical, urgent repair, family crisis. Not a sale, not a holiday, not an opportunity.

Where this fits

This is the Stability pillar of your Financial Health Score, and it is the one that most often turns out to be the weak link for people who otherwise look like they are doing everything right. Stability is what lets the other six pillars survive a bad year.