Short answer: multiply your essential monthly expenses by the months of cover you want — that’s your target. This calculator shows the target, your gap, and the month you’ll be fully funded at your current pace. Example: $3,200 of monthly essentials × 6 months = a $19,200 target; with $5,000 saved and $400 a month going in at 4% APY, the $14,200 gap closes in 33 months.
| Still to save (the gap) | — |
| Months until fully funded at your pace | — |
| Fully funded by | — |
| Starter milestone: a $1,000 cushion | — |
See the full breakdown
Educational estimate only — not financial advice. ‘Essential expenses’ means the stripped-down month: housing, utilities, food, transport, insurance, and minimum payments — not your full lifestyle spend. Interest assumes the stated APY is paid monthly on the growing balance; actual HYSA rates vary.
How this calculator works
Target = essential monthly expenses × months of cover. The projection then adds your monthly contribution and compounds any interest monthly at the APY you enter, until the balance reaches the target. Financial planners most often cite 3–6 months; the right number depends on how stable your income is and how many people depend on it — single-income households and freelancers usually aim higher.
Worked example
- Essentials $3,200/mo, 6 months → target $19,200; saved $5,000 → gap $14,200; at $400/mo + 4% APY → funded in 33 months.
- Already-there check: essentials $2,500, 3-month target $7,500, saved $7,500 → gap $0.
- No-interest check: essentials $4,000, 9-month target $36,000, $2,000 saved, $750/mo at 0% → 46 months.
FAQs
How many months do I really need? Three is a floor for a dual-income household with stable jobs; six is the common target; nine to twelve suits single earners, freelancers, and commission income. Where should the fund live? Somewhere boring, insured, and reachable in a day or two — a high-yield savings account is the usual answer. Not invested: the fund’s job is to be there, not to grow. What counts as essential expenses? The month with everything optional stripped out. Use your real stripped-down number, not your average spend — it makes the target honest and smaller.
Sources: CFPB: an essential guide to building an emergency fund, FDIC national rates and rate caps Figures last verified Report a wrong number