Emergency Fund Calculator — How Long Will Your Savings Last?
Enter your current savings and two spending levels — normal and bare-minimum — to see your real runway in months, not just a generic "3-6 months" rule. Also shows your target fund size and how long until you reach it.
🛟 Your Numbers
📅 Your Runway
Disclaimer: This calculator is for educational and planning purposes only and does not constitute financial advice. It assumes your entered expenses stay constant and does not account for one-time costs, medical emergencies, or income changes beyond what you enter. Consult a licensed financial advisor for personal financial planning.
Normal Runway vs Survival Runway — Why Both Matter
Most emergency fund calculators only tell you one number: how many months your savings cover at your current lifestyle. That's useful, but it hides your real worst-case buffer.
Normal Runway answers: "If I kept living exactly as I do now, with zero income, how long could I last?" This is realistic for planning, but it's not your true floor.
Survival Runway answers: "If I cut everything down to rent, utilities, groceries, insurance, and minimum debt payments — how long could I actually stretch this money?" This is your real safety margin, and it's always longer than your normal runway.
Knowing both numbers changes how you plan: a thin gap between the two means you have little room to cut back in a real emergency; a wide gap means you have meaningful flexibility if things get tight.
The Formulas
Normal Runway (months) = Current Savings ÷ Monthly Normal Expenses
Survival Runway (months) = Current Savings ÷ Monthly Minimum Expenses
If you enter a monthly income you'd still receive during the emergency (severance, notice pay, freelance work, a partner's income), the calculator nets it against your expenses first — Monthly Shortfall = max(0, Expenses − Income) — and stretches your runway accordingly, since you're not burning through savings at the full expense rate.
Worked Example
You have ₹1,50,000 saved, spend ₹45,000/month normally, could survive on ₹28,000/month if needed, and have no income during the gap.
- Normal Runway = 1,50,000 ÷ 45,000 = 3.3 months
- Survival Runway = 1,50,000 ÷ 28,000 = 5.4 months
- If your target is 6 months of normal expenses (₹2,70,000), you're short by ₹1,20,000 — at ₹5,000/month saved, that's 24 more months to fully close the gap.
How Many Months Should You Target?
| Situation | Suggested Target | Why |
|---|---|---|
| Stable salaried job, dual income | 3-4 months | Lower income-loss risk, faster re-employment likely |
| Salaried, single income, dependents | 6 months | More people relying on one income source |
| Freelancer / business owner | 9-12 months | Irregular, less predictable income |
| Nearing a major expense (home, medical) | Add a buffer on top | Reduces the chance of raiding the fund for a planned cost |
These are general guidelines, not rules — your own job security, health, dependents, and risk tolerance matter more than any fixed number.