Life Insurance Needs Calculator
Estimate how much cover your family would need.
Your figures
Result
How to use this tool
- Enter your own figures over the defaults — Annual income to replace, Years of support needed, Debts to clear and the rest.
- The answer updates as you type. There is no button, and nothing is sent anywhere.
- Change Debts to clear on its own to see how much it moves the result — the worked example below shows exactly that.
This uses the income-replacement approach: years of income to replace, plus debts to clear, minus what you already have. It is one of several methods and deliberately simple.
How it works
This takes 4 inputs — annual income to replace, years of support needed, debts to clear, existing savings and cover — and returns estimated cover needed, income replacement, debts and less existing assets. The whole calculation happens in this page as you type: there is no submit button, no request, and nothing stored.
Because it recalculates on every keystroke you can use it as a sensitivity test rather than a one-shot answer. Moving debts to clear alone from 250,000 to 275,000 changes estimated cover needed from 1,250,000.00 to 1,275,000.00 — the worked example below sets that out in full.
A worked example
Worked through with the figures the page already has in it: annual income to replace of 70,000 and years of support needed of 15, and the rest as shown, giving estimated cover needed of 1,250,000.00. These numbers come from running the calculator’s own code, not from being typed in here, so they cannot drift away from what you see on screen.
Starting from:
- Annual income to replace: 70,000
- Years of support needed: 15
- Debts to clear: 250,000
- Existing savings and cover: 50,000
| Result | Value |
|---|---|
| Estimated cover needed | 1,250,000.00 |
| Income replacement | 1,050,000.00 |
| Debts | 250,000.00 |
| Less existing assets | 50,000.00 |
What happens when one input moves
Holding everything else steady and changing Debts to clear from 250,000 to 275,000 — 10% — moves the answer like this:
| Figure | 250,000 | 275,000 |
|---|---|---|
| Estimated cover needed | 1,250,000.00 | 1,275,000.00 |
| Income replacement | 1,050,000.00 | 1,050,000.00 |
| Debts | 250,000.00 | 275,000.00 |
| Less existing assets | 50,000.00 | 50,000.00 |
That is usually the number worth arguing over: it is easier to move than the headline amount, and the difference compounds across the whole term.
Life Insurance Needs Calculator — frequently asked questions
How many years of income should I replace?
Commonly until the youngest child is financially independent, or until a surviving partner reaches retirement. Ten to twenty years is typical.
Should I include my mortgage?
Yes, in the debts figure — clearing it removes the largest fixed cost your family would face.
Term or whole life?
Term is far cheaper for the same cover and suits most people covering a defined period. Whole life is a different product with an investment element and much higher premiums.
Is this calculator free?
Yes, with no account, no limits and no data collection. It runs entirely in your browser.
Should I rely on this for a financial or medical decision?
No. It is a planning estimate built on standard formulas and stated assumptions. For decisions that matter, speak to a qualified professional who can account for your full circumstances.
How accurate is the Life Insurance Needs figure?
The arithmetic is exact. With the defaults on this page — annual income to replace 70000, years of support needed 15, debts to clear 250000 — it returns estimated cover needed of 1,250,000.00. What limits accuracy is the assumptions, not the maths: change debts to clear to 275000 and the same formula gives 1,275,000.00. Treat it as a well-founded estimate, not a quotation.
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Background reading: Loan, Mortgage and Investment Calculators Explained
Nothing is sent anywhere. The figures you type stay in this page and are never transmitted or stored — how that works.
Disclaimer. The formula is exact; the answer is only as good as the figures and assumptions above. Not financial, tax, medical or legal advice. Full disclaimer.