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Life Insurance Calculator (UK)

Work out how much life cover your family would actually need if your income stopped tomorrow — and see what a level term policy might cost per month. Everything is calculated in your browser; nothing is uploaded, stored or shared.

Your details

What your family would need D·I·M·E

Quick assumes 10 years of income replaced, £30,000 per child, and typical debts and savings for the UK. Switch to Detailed to use your own figures.

Include death-in-service or group life from your employer under existing cover.

Cover schedule

Debt clearance£5,000
Income replacement£350,000
Mortgage repayment£150,000
Education fund£30,000
Total need£535,000
Less existing cover & savings−£10,000

Recommended cover

£530,000

Indicative premium /month

£38.31

The same cover at other ages

Age when you applyMonthly premium
35 you£38.31
40 £50.35
45 £71.21
50 £100.70
55 £142.41

Your premium is fixed at the age you apply, not recalculated as you get older. Waiting is what costs money.

Level term assurance, healthy applicant. Illustrative only — not a quote.

Why use a life insurance calculator?

Most people in the UK either have no life insurance at all or hold a round number — £100,000, £250,000 — chosen because it sounded sensible rather than because it matched their commitments. Both mistakes are expensive. Too little cover leaves a partner unable to keep the mortgage going; too much means paying premiums for decades on protection you never needed.

This calculator sizes your cover from your real financial picture: what you owe, what your household lives on, what is left on the mortgage, and what you would want set aside for each child’s education. It then subtracts what you already have — existing policies, death-in-service benefits and accessible savings — so you only insure the genuine gap.

The premium shown is an indicative figure for level term assurance, the simplest and cheapest form of life insurance in the UK: the payout stays fixed for a set term and the policy simply ends when the term does. Decreasing term cover (which tracks a repayment mortgage down) is usually cheaper still.

How the calculation works: the DIME method

The calculator uses the DIME framework, a standard approach used by financial planners to size life cover. DIME stands for Debt, Income, Mortgage and Education — the four commitments that survive you.

Debt covers everything outside the mortgage: car finance, personal loans, credit cards and overdrafts, so they are cleared immediately rather than pursued against your estate. Income is your annual after-tax income multiplied by the number of years your household would need to replace it — ten years is a common choice for families with young children, five for households where a partner could realistically re-establish income sooner. Mortgage is your outstanding balance, so the family home is paid off outright. Education is a lump sum per child; £30,000 per child is a reasonable UK baseline covering school-age support through to university living costs, though private schooling changes the figure dramatically.

From that total the calculator deducts your existing life cover (including any death-in-service benefit from your employer, typically 2–4× salary) and savings that could realistically be spent. The result is rounded up to the nearest £10,000 — the increments in which UK insurers actually sell cover.

Frequently asked questions

Where these figures come from

The tax and bereavement-benefit figures on this page are taken from the bodies that set them, and checked against those bodies rather than against other websites.

  • HM Revenue & Customsinheritance tax, and how writing a policy in trust keeps the payout outside your estate
  • GOV.UKBereavement Support Payment — what the state actually pays a surviving partner
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This tool provides general information and indicative figures only. It is not financial advice, not a quote, and no insurer is affiliated with it. Premiums shown are illustrative estimates for a healthy applicant on level term assurance; actual premiums depend on underwriting. Consider speaking to an FCA-regulated adviser before buying cover.