Career Break Runway Calculator
See how many months your savings last on a career break or sabbatical and the gap if the break is longer.
What does the undefined do?
It shows how long your savings last on a career break and how much more you need if the break runs longer than the fund covers.
- Inputs: monthly expenses, savings set aside, any income during the break and the planned break length.
- Output: the runway in months and the shortfall in money at the planned break length.
- Method: savings divided by the net monthly drawdown, plus a shortfall check against the planned break.
Quick answer
With 2,000 of monthly expenses, 10,000 saved and no income, the runway is five months. A twelve-month break leaves a shortfall of about 14,000.
What This Calculator Really Does
A career break, sabbatical or study gap is easier to take once you know the number that matters: how long your money lasts. The net drawdown is what you spend each month minus anything you earn during the break, so a part-time project or rental income stretches the runway. This tool divides your savings by that drawdown and compares it with the length you plan. Where the break is longer, it quantifies the shortfall so you know how much to save first or how much side income to line up. It counts regular monthly spending only, so add a buffer for one-off costs like travel, health cover and the costs of returning to work, such as new clothes or certification.
The formula it uses
Runway months = savings / (monthly expenses minus monthly income). Shortfall = max(0, planned months x net drawdown minus savings).
Worked example with real numbers
Expenses of 2,000 a month, savings of 10,000 and no income give a net drawdown of 2,000 and a runway of five months. A planned twelve-month break leaves a shortfall of 12 x 2,000 minus 10,000, which is 14,000.
Common mistakes to avoid
- Forgetting health insurance and pension contributions, which often stop when employment stops.
- Assuming savings grow, when a break usually spends the cash rather than investing it.
- Leaving no buffer for returning to work, when job hunting can take months.
Assumptions and limitations
Regular monthly spending is assumed steady, savings earn nothing during the break, and no tax or benefit changes are modelled. One-off costs and investment returns are excluded.
Disclaimer
This is a personal budgeting estimate, not financial advice. Tax, benefits and health cover depend on your situation, so confirm the effect of a break on your income and pension before you commit.
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Frequently Asked Questions
How is the undefined calculated?
Net drawdown is expenses minus income, runway is savings divided by drawdown, and the shortfall is the extra cash needed if the planned break is longer. The steps panel shows each part.
What do I need to use the undefined?
Monthly expenses, savings set aside, any income during the break and the planned break length.
What does the result from the undefined show?
The runway in months and the shortfall at your planned break length, so you know whether to save more before you start.
How much should I save before a career break?
A common target is the runway you need plus three to six months of buffer. This tool shows the runway, so add the buffer on top for re-entry and one-off costs.
Does a career break hurt my career?
A planned, well-explained break is usually fine. Keep your skills current, frame the break positively, and line up references before you leave.
Is the undefined really free?
Yes — 100 percent free, no sign-up, and everything runs in your browser.