How big should your emergency fund be?

An emergency fund is there so that a job loss, a hospital bill or a car repair does not force you to sell investments at a bad price or borrow at a high rate. It is not meant to grow. If you judge it by its returns, it looks like idle money. Its value shows up in the year something goes wrong and you can pay for it without selling your equity funds or taking a personal loan.

Months of expenses, not months of salary

Start with the right base. The target is months of expenses, and income is the wrong measure. 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 carry on if your salary stopped.

Count everything that keeps running: rent, EMIs, insurance premiums, groceries, utilities, school fees and money you send to family. Leave out what would stop, such as holidays, discretionary shopping and the SIPs you would pause.

How many months do you need?

The answer depends mostly on how quickly you could replace your income.

• Three months: a dual-income household where both earners are in demand, with no dependants and no large EMI. A gap in income would be inconvenient but manageable.
• Six months: the default for a single salaried earner with dependants or a home loan.
• Nine to twelve months: self-employed people, those on commission-heavy pay, anyone in a niche role where the next job takes a while to find, and sole earners supporting several people.

If you are the only earner in your household, aim for the top of your band. An extra month or two in the fund costs you a small amount of long-run return, which is cheap compared with selling equity in a falling market to pay rent.

Where to keep it

The money should be reachable within a day or two, hold its value, and be a little inconvenient to get at. A savings account does the first two but not the third. That is why buffers kept in a salary account tend to get used up bit by bit.

Many people split it. They keep enough in a separate savings account to cover the first few weeks, and put the rest somewhere that takes a day to withdraw and pays a little more. Keep it out of equity and anything with a lock-in or exit penalty, because you may need the money in the same month the market is down.

You can compare what different options would pay on the same balance with the FD calculator. A slightly higher rate is not worth moving the money somewhere you cannot reach quickly.

Building it while you keep investing

Filling a six-month buffer from zero can take a year or longer, and stopping all investing for that long has a cost too. A sensible middle path is to reach one month of expenses quickly, which covers most small emergencies, and then build the rest while running a smaller SIP.

Bonuses, tax refunds and salary arrears fill it fastest. You have not started spending that money yet, so it is easier to move it straight into the fund.

Use it when you need it

Some people build a buffer and then refuse to touch it, putting the emergency on a credit card instead. That defeats the purpose. The fund is meant for these situations. Use it, then make refilling it your next priority, ahead of new investments.

Do keep a strict definition of an emergency: job loss, a medical expense, an urgent repair or a family crisis. A sale, a holiday or an investment opportunity does not qualify.

How this affects your Health Score

This is the Stability pillar of your Financial Health Score. It is often the weak spot for people who otherwise seem to be doing everything right, and it is what keeps the other six pillars intact through a bad year.