🛟 Emergency Fund Calculator
Replace a one-size-fits-all savings rule with a transparent range based on essential expenses, income stability, dependents, insurance exposure, and a realistic job-search period.
Transparent planning rules
This is a planning heuristic, not an official requirement. The model starts with a lower range for steady income, a larger range for variable income, and the largest range for seasonal income. It then considers dependents and your expected time to replace income. The insurance deductible is added as a separate cash exposure instead of being disguised as another month of expenses.
Before pursuing the full target, a smaller cash buffer can reduce the chance that an ordinary surprise goes on a high-cost credit card.
Monthly essential expenses multiplied by risk-adjusted months supports a job loss, client gap, medical leave, or seasonal slowdown.
A known deductible or similar household exposure can occur while income is interrupted, so the calculator adds it to the expense reserve.
Context: the Federal Reserve reported that in 2025, 55% of adults said they had set aside enough emergency savings to cover three months of expenses. See the 2025 Survey of Household Economics and Decisionmaking.