This calculator estimates how many months of essential spending might be covered by emergency cash and a chosen share of accessible investments. It is not a retirement calculator and it is not financial advice. It is a simple way to think about breathing room: how long your current buffer might last, how much of a target buffer may already be covered and how long extra saving could take.
What this calculator assumes
- Monthly essential spending is the amount used for every month-covered estimate.
- Emergency cash is counted in full.
- Only the selected percentage of accessible investments is counted.
- Investment values can fall and may not be available at the value shown.
- The result is educational only and is not financial advice.
What counts as flexible money
The cash emergency fund is counted in full. The accessible portfolio is counted only by the percentage you enter, because invested money can fall in value and may not be sensible to treat like cash. This is a cautious simplification. Some investments may be accessible but volatile, while pensions and locked accounts may not be available when you need them.
How to read months covered
Cash months covered divides emergency cash by monthly essential spending. Total months covered adds the chosen accessible share of the portfolio before dividing by essential spending. If your essential spending estimate is too low, the result will look stronger than reality. If the portfolio falls in value, the accessible part may also be lower than shown.
Why the target is personal
A useful buffer depends on job security, household responsibilities, debt, insurance, health, housing costs and how variable your income is. The calculator lets you test a target number of months, but it does not know what is right for you. Treat it as a planning prompt, then stress-test the assumptions.
Useful official sources
FAQs
Should investments count as emergency money?
Usually cash is easier to rely on for emergencies because investments can fall in value. This calculator lets you include only a chosen percentage of accessible investments so you can stay cautious.
What does total months covered mean?
It divides emergency cash plus the selected accessible share of the portfolio by monthly essential spending. It is a rough buffer estimate, not a guarantee.
Can this replace an emergency fund?
No. It helps compare buffers, but it cannot decide the right emergency fund for your circumstances.