“Six months of expenses” is the number most of us have heard. It is repeated so often that it has stopped being questioned. Let us be clear: it is not bad advice. It is simply a rule of thumb, and rules of thumb are, by definition, built for the average case, not your case.
The number means something very different depending on how easily you can be re-employed. If your job has fifty openings a week, six months is generous. If it does not, as is the case with my own fairly niche role, six months may not be enough. The story is completely different if you are self employed. The question worth asking is, how replaceable is your specific income.
It is also worth being precise about what counts as an expense here, since most people are not. Your rent does not pause because your emergency fund policy says so. Neither does your EMI. These are fixed, committed outflows that continue irrespective of what happens to your income. That, not your full monthly spending, is the number that should anchor this calculation.
One risk I weigh more heavily than job loss is a medical emergency, and I would argue most people underweight it. Job loss is a slow-moving risk. There is usually some runway before the impact is felt. Hospitalisation is not. Health insurance helps, but it does not close the gap as cleanly as most assume. Claims take time to settle. Certain costs are excluded. And the difference between what is billed and what is eventually reimbursed does not wait for your claim to clear, you do.
Put these factors together and arriving at a number takes longer than most people expect. Mine has moved more than once, and will likely move again. There is no single figure that applies to everyone, and this is not a way of avoiding the question, it is simply a function of the inputs being different for each person. Two individuals with identical salaries can reasonably arrive at different numbers, because one has a more stable job, or dependents, or a lower tolerance for risk than the other. None of this shows up in a generic thumb rule, but all of it matters.
What gets me to a number, in practice, is weighing job stability and medical exposure alongside a few other factors, then applying a simple test to the result: if the worst realistic outcome occurred tomorrow, what would you actually do? If the honest answer involves selling an asset at a loss, or borrowing from someone, the number you have arrived at is too low. This test will not do the thinking for you, but it is a reliable check on whether the thinking was sufficient.
I built a calculator that accounts for what has been discussed here, along with a few additional factors, dependents, age, a second income, to help you arrive at a figure specific to your situation rather than a generic average. [(Free) Emergency Fund Calculator]
This post is meant to help you think about emergency funds. It’s general education, not personalised financial advice, and I’m not a SEBI registered investment adviser.