Why "3 to 6 months" is not an answer
The range exists because the right size genuinely varies — but repeating the range leaves you to guess. What actually drives the number is how long it would take you to replace your income, and how many people are counting on you while you do it.
A salaried nurse with no dependants and a partner who also works can rebuild quickly and has a second income in the meantime. A freelance designer supporting two children has neither cushion. Same expenses, very different fund.
How this calculator sizes it
It starts at three months of essential expenses and adds time for each thing that makes recovery slower:
- Steady salary: nothing added. Three months is a reasonable base.
- Variable or insecure income: +1.5 months. Commission, shift work or a shaky employer all lengthen the gap between paychecks.
- Self-employed or freelance: +3 months. No notice period, no severance, no unemployment safety net in most places, and client income can stop all at once.
- Each dependant: +0.5 months, up to +1.5. More people means less ability to cut back in a bad month.
- Single-earner household: +1 month. With two incomes, one job loss halves your income. With one, it removes all of it.
The result is capped at 12 months. Beyond that, money is better used paying down debt or invested — an oversized cash pile quietly loses value to inflation every year.
Use expenses, not income. The most common mistake is multiplying your salary. Your fund only needs to cover what you would actually spend with no job: housing, utilities, food, transport, insurance and the minimum payments on your debts. Restaurants, subscriptions and holidays are not in that list — and leaving them out makes the target dramatically smaller and more reachable.
Where to keep it
Three requirements, in order: you can get to it within a day or two, the balance cannot fall, and it is not the account your card is attached to. A high-yield savings account at a different bank from your everyday one hits all three. The friction of a transfer is a feature.
What it should not be: invested in stocks, locked in a long CD, or sitting in your checking account. The first can be down 30% exactly when you need it, the second cannot be reached without a penalty, the third gets spent.
What counts as an emergency
The test is simple: is it unexpected, necessary and urgent? A boiler failing in February is all three. Christmas is none of them — it is on the calendar every year and belongs in your monthly budget. A holiday is a savings goal, not an emergency.
Being strict about this is what keeps the fund intact for the day it actually matters.