How the emergency fund calculator works
The 3–6 month rule, tuned
The rule is a range, not a lottery: stable dual-income households sit near 3 months; single-income households with kids near 6; freelancers and volatile incomes at 8+. The calculator converts your situation into months of your real essential expenses — because a "6-month fund" for a $2,500 lifestyle and a $6,000 one are different machines.
Essential vs total expenses
The fund replaces needs, not lifestyle: in a real emergency, dining out, subscriptions, and extra debt payments stop. Sizing on essential expenses (housing, food, utilities, insurance, transport, minimums) typically cuts the target 25–35% versus total spending — the difference between a fund that takes 14 months and one that takes 9.
Fund vs debt: the sequence
The standard order: $1,000 starter fund immediately (it breaks the borrow-for-emergencies loop), employer match captured, then high-interest debt — with a trimmed mini-fund (~1 month) maintained during payoff — then the full fund. The reason: a $1,000 fund prevents the 24% APR borrowing that undoes months of debt progress.