Free emergency fund calculator. It sizes your target on the variable that actually matters — how replaceable your income is — rather than the flat “three to six months” rule, then shows a staged build timeline so the number is not just a wall.
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Emergency fund calculator
Enter your survival expenses — the bare-bones month: housing, utilities, food, insurance, minimum debt payments, transport. Not your full spending.
Targets follow the income-replaceability framework in the article above, not a flat “3–6 months” rule. Educational tool — not financial advice.
Why “3 to 6 months” is the wrong question
An emergency fund insures your income. So the right size depends on how likely that income is to stop and how long it would take to replace — not on a universal number. Two stable household incomes is a different risk from one specialized income in a thin job market, and the calculator prices that difference.
It also runs on survival expenses, not income and not total spending: housing, utilities, food, insurance, minimum debt payments, transport. Using income instead inflates the target by a third or more for most people, and an inflated target is one people abandon.
Build it in stages
The staged timeline is the useful part. A $17,000 target is demoralizing arithmetic on day one; a $1,000 starter fund is three months away and stops the next surprise going on a credit card. Each stage buys real protection while the full number is still being built.
If the calculator shows a full-target timeline beyond five years, that is a signal to bank the first two stages and reassess rather than grinding at an abstract number for half a decade.
Where the money should sit
Liquid, boring, and never in anything that can be down 30% the week you need it — which in practice means a high-yield savings account. The full framework, including the “but my credit card is at 24%” objection, is in How Big Should Your Emergency Fund Be?
Related: the debt payoff calculator, sinking funds for the predictable expenses that are not emergencies, and the paycheck-to-paycheck exit sequence.
Educational tool, not personalized financial advice.