How big should your emergency fund be?

Almost every article on personal finance opens with "keep six months of expenses aside". It is repeated so often that people either follow it without thinking or ignore it entirely. Both are mistakes, because the right number depends on facts about your life that a rule of thumb cannot know.

An emergency fund does one job: it buys you time. Time to find another role after a layoff. Time to recover from an illness without selling investments at the worst possible moment. The question is not "what does the internet say" but how long might my income realistically stop, and what must I keep paying while it does?

Start with outflow, not income

The common error is sizing the fund against salary. What matters is what leaves your account each month whether or not you are earning.

That means your genuine living costs — rent, groceries, utilities, school fees, medicines, transport — plus every EMI you are contractually obliged to pay. A home loan does not pause because you lost your job. Miss enough payments and you damage your credit record at exactly the moment you can least afford to.

It does not include your SIPs. You would pause those in a genuine emergency, and treating them as fixed inflates your target unnecessarily.

Then adjust for how your income behaves

Here is where the six-month rule breaks down.

| Your situation | Reasonable runway | | --- | --- | | Salaried, stable employer, in-demand skills | 6 months | | Salaried with large variable or bonus component | 9 months | | Self-employed, freelance, or commission-based | 12 months |

Add roughly one month for each person who depends on your income, up to about three. A single earner supporting parents and a child cannot job-hunt with the same freedom as someone with no dependents, and the fund has to reflect that.

Where the money should sit

An emergency fund has exactly two requirements: it must be there when you need it, and it must not have fallen in value in the meantime. Return is a distant third priority — this is not the money you are trying to grow.

• Sweep-in fixed deposit — behaves like a savings account with a better rate. Money moves back automatically when you withdraw. For most people this is the sensible default.
• Liquid mutual funds — invest in very short-maturity debt. Redemption typically reaches your account the next working day, and many offer instant redemption up to ₹50,000. Slightly better returns than savings, with slightly more friction.
• Plain savings account — keep at least one month here regardless. Instant access matters more than yield for the first tranche.

What it should never be in: equity funds, stocks, real estate, or anything with a lock-in. The whole point is availability on a day you do not get to choose — and markets have a habit of being down precisely when the economy is shedding jobs.

Building it from zero

If the target looks impossible, that is normal and not a reason to skip it.

1. Get to one month first. This alone removes most small financial emergencies from your life.
2. Automate a transfer on salary day, before you can spend it. Treat it like an EMI you owe yourself.
3. Send windfalls here — bonus, tax refund, gift money — until the target is met.
4. Then stop. An oversized emergency fund is money that should have been compounding. Once you hit the number, redirect the flow into investing.

Until this buffer exists, a SIP is built on sand: the first genuine emergency forces you to redeem it, usually at a loss, and the compounding you were counting on resets to zero.

Size yours with the calculator →