How Much Life Insurance Do I Need? The DIME Method Explained

The ten-times rule is popular because it is easy to say. It ignores every fact that matters: whether you have a mortgage, how old your children are, whether your partner earns, and how much you already hold in savings and existing cover.

A 28-year-old renter with no children and a 44-year-old with a $380,000 mortgage and two pre-teens can earn identical salaries and need coverage amounts that differ by a factor of three. Salary multiples cannot see that difference; DIME can.

Use a multiple only as a sanity check at the end. If DIME produces a number wildly outside six to fifteen times income, re-check your inputs before you re-check the method.

Add up every non-mortgage balance: credit cards, personal loans, car finance, student loans, medical debt, and any business debt you have personally guaranteed. Personal guarantees are the item most often missed and frequently the largest.

In most of the United States, unsecured debt is paid from the estate rather than inherited — but paying from the estate still drains the assets your family was going to live on. In community property states, and where a spouse co-signed, the debt attaches directly.

Add final expenses to this bucket: a funeral typically runs $8,000–$12,000 in the US and £4,000–£5,500 in the UK, plus probate and legal costs. Budget $15,000 unless you have a prepaid arrangement.

Multiply your annual after-tax contribution to the household by the number of years it needs to continue. The usual anchor is the years until your youngest child finishes full-time education, or until your partner reaches retirement age — whichever is longer.

Use net income, not gross: the family needs spending power, not payroll. Then subtract the portion of your income you spent only on yourself — commuting, your own insurance, personal spending — which typically trims 20–25%.

If your partner earns, replace only the shortfall. If your partner would have to reduce hours to take over caregiving, add the value of that reduction back in. A stay-at-home parent should be covered too: replacing childcare, transport, and household management realistically costs $30,000–$50,000 a year.

Worked example: $70,000 net contribution, minus 20% personal spend, is $56,000 a year. Over 15 years that is $840,000 — before any adjustment for investment returns.

Use the current outstanding balance from your latest statement, not the original loan and not the home's market value. If you hold a rental property with its own mortgage, include it only if the rent would not comfortably cover the payments without you.

Consider whether the family would actually stay in the home. Clearing the mortgage removes the single largest fixed cost and usually keeps children in the same school — which is why most families choose it even when downsizing would be cheaper on paper.

If you already hold decreasing-term mortgage protection through your lender, subtract that cover here rather than ignoring it. Check whether the policy pays your estate or the lender directly; the difference matters.

Estimate the full cost per child, then subtract what is already saved in a 529, RESP, JISA, or equivalent. Only the gap needs insuring.

As a planning figure, four years at a US in-state public university runs roughly $100,000–$120,000 all-in, and a private university $220,000–$300,000. UK undergraduate costs including maintenance typically land around £60,000. Private schooling before university, if you intend to continue it, is a separate and often larger line.

Education inflation has consistently outpaced general inflation, so avoid discounting these figures too aggressively. Insuring today's cost is a reasonable middle position for a 20-year term.

DIME gives a gross need. Deduct liquid assets your family would actually spend: cash savings, taxable brokerage accounts, and any death-in-service or group life benefit from your employer.

Be careful with two items. Group life cover disappears the day you leave the job, so treat it as a temporary offset, not a permanent one — many planners ignore it entirely when sizing an individual policy. And retirement accounts are usually earmarked for the surviving partner's own retirement; spending them at 40 solves one problem and creates another.

The result after subtraction is your target death benefit. Round up to the nearest $50,000 — the premium difference between $700,000 and $750,000 is usually a few dollars a month.

Single earner, two young children, age 38. Debts $22,000 plus $15,000 final expenses; income replacement $56,000 × 20 years = $1,120,000; mortgage $310,000; education $200,000 for two children less $18,000 saved. Gross need $1,649,000, less $60,000 savings and no group cover counted: roughly $1.6 million of 25-year term.

Dual earners, one child aged 12, age 45. Debts $9,000 plus $15,000; the surviving partner's income covers most living costs, so income replacement is the $28,000 annual shortfall × 10 years = $280,000; mortgage $180,000; education $110,000 less $45,000 saved. Gross $549,000, less $70,000 in savings: roughly $500,000 of 15–20 year term.

Stay-at-home parent, three children under 10, age 34. No income to replace directly, but $42,000 a year of childcare and household costs × 12 years = $504,000; debts and final expenses $18,000; no separate mortgage need if the earning partner is already covered; education $150,000 net. Roughly $650,000 of 20-year term — a policy that is frequently skipped entirely.

The amount and the term are one decision. Set the term to the year your largest obligation ends: the mortgage payoff date, or your youngest child's expected graduation, whichever is later.

Laddering is the cheapest way to match a declining need. Instead of one $1.5 million 30-year policy, buy $750,000 for 30 years and $750,000 for 15 years. The second policy expires when the children are independent, and you stop paying for coverage you no longer need — usually saving 25–35% over the full period.

Prioritise a convertibility rider over a longer term. It lets you convert to permanent coverage later without a medical exam, which protects you if your health changes before the term ends.

Estate tax planning, a business buy-sell agreement, or a special-needs dependant who will require lifelong support all push the number well above DIME, and generally point toward permanent rather than term coverage.

Conversely, if your partner has a strong independent income, your home is nearly paid off, and your children are financially independent, the honest answer may be that you need very little cover — or none beyond final expenses.

Re-run the calculation after every major life event: a birth, a move, a remarriage, a business start, or a large change in income. Coverage sized for one stage of life is rarely right for the next.