🛩️ Savings Runway Calculator

If your income stopped tomorrow, how long could you last? Enter your available savings and monthly expenses to see your financial runway — the cushion that turns a job loss into a manageable gap.

Available savings / cash ($) Monthly expenses ($) Any remaining monthly income ($) (partial work, benefits, partner)

What "runway" means for a household

Borrowed from the startup world, "runway" is how long you can keep going before the cash runs out. For a household it answers a reassuring, clarifying question: if my income stopped, how many months could I cover my expenses from savings? Knowing this number turns a vague fear of job loss into a concrete, manageable figure — and tells you exactly how much cushion you have to make decisions calmly.

How it's calculated

Runway is your available savings divided by your monthly net burn (expenses minus any income that would continue). $20,000 in savings with $3,500 of monthly expenses and no other income is about 5.7 months of runway. If a partner's income or partial work would continue, your net burn is lower and your runway stretches further — which is why the calculator lets you enter remaining income.

Why knowing your runway matters

It quantifies your safety net. This is the practical flip side of the [emergency fund](/calculators/emergency-fund-calculator/): the fund is the target to build; the runway is how long what you have would actually last.
It informs big decisions. Enough runway gives you the freedom to leave a bad job, weather a layoff, take a career risk, or start a business without panic.
It reveals urgency. A runway under a month or two is a clear signal to prioritize building a buffer above almost everything else.

How to extend your runway

Two levers, both within your control:

Increase savings — the numerator. Every extra dollar saved adds directly to your runway. Automate it (see [how to stop living paycheck to paycheck](/articles/stop-living-paycheck-to-paycheck/)).
Lower your essential burn — the denominator. Knowing your bare-bones "survival budget" (below your normal spending) means your runway in a real emergency is actually longer than this everyday figure suggests, since you'd cut discretionary costs.

Aim to build toward at least 3–6 months of runway. Beyond the money, the peace of mind of knowing you have breathing room is one of the most valuable things savings can buy.

Frequently asked questions

How long should my savings last?

A common target is 3–6 months of expenses in accessible savings — more if your income is variable or you have dependents. This calculator shows your actual runway based on your savings and monthly burn.

What's the difference between this and an emergency fund calculator?

The emergency fund calculator sizes the target you should build (months × expenses). This runway calculator tells you how long the savings you already have would actually last if income stopped.

How can I make my savings last longer?

Save more (raising the total) and lower your essential monthly expenses (reducing the burn rate). In a real emergency you'd cut discretionary spending, so your true runway is often longer than your everyday-budget figure suggests.

This calculator is for educational purposes only and does not constitute financial advice. Results are estimates based on the inputs and assumptions shown.