How big should an emergency fund be?
How big should an emergency fund be? Start with essential costs, reliable replacement income and one plausible urgent bill.
Start with the job, not a slogan
An emergency fund pays for an expense that is necessary, unexpected and time-sensitive without forcing you to sell investments or borrow. “Three to six months” is a useful prompt, not a universal answer. A renter with two stable salaries and strong sick-pay protection faces a different loss than a sole trader, homeowner or family relying on one income.
Calculate essential months
List only costs that continue during a crisis: housing, utilities, basic food, insurance, transport needed for work, minimum debt payments and essential care. Exclude holidays, optional subscriptions and normal investing. If that total is €2,000, three months is €6,000 and six is €12,000. The same household may also need a separate known-cost reserve for annual tax, tuition or car servicing; predictable bills are not emergencies.
Then estimate the income gap. Include reliable unemployment insurance, contractual severance or a second salary, but do not count credit-card limits or hoped-for help. A household spending €2,000 with dependable replacement income of €1,200 has an €800 monthly gap. Six months of that gap is €4,800, though one-off risks still need room.
Add the risks that months miss
Months of spending do not capture a €2,500 heating repair or a €1,000 insurance excess. Add the largest plausible short-notice cost that is not already insured. Avoid adding every imaginable disaster: the goal is resilience, not an unreachable number.
A practical range is one month for a highly protected dual-income household, three to six months for many employees, and six to twelve months where income is variable, dependants rely on one earner, or re-employment may take longer. These are decision ranges, not guarantees.
Build it in stages
First target a small interruption buffer, perhaps €1,000 or one month of essentials. Next cover your chosen income gap period. Finally add the specific property, health or work risk. Keep the money accessible and separate from daily spending. Deposit protection depends on the institution and local scheme, so verify that the provider is authorised and understand the applicable limit.
Review the number after rent changes, a child arrives, employment changes or insurance deductibles rise. Do not automatically inflate the target because your discretionary lifestyle grew.
Rebuilding rules matter too. If the fund is used, pause optional goals and restore it at a deliberate monthly rate; do not treat one withdrawal as proof that the target failed. Conversely, a fund that has never been touched is not necessarily excessive. Its value is the option to avoid a forced, costly decision, not the interest it earns or how often it is spent.
What the calculator can and cannot decide
Use the emergency-fund calculator to turn essential monthly costs and a chosen number of months into a target. Test a shorter and longer job-search period. The output is arithmetic; your employment protection, household structure and likely one-off costs determine which result is sensible.
Next: compare a savings account with an ETF for emergency money.