How much life insurance do I need? The DIME method, explained

Life insurance answers one blunt question: if your income disappeared tomorrow, would the people who depend on you be financially fine? "How much do I need?" is really asking how big a check would keep them in their home, out of debt, and on track — for as long as they need it. Buy too little and you leave a gap; buy too much and you waste premium you could invest instead. The goal is to insure the shortfall, not a round number someone shouted on a podcast.

The quick answer: the 10–12x income rule

The fastest rule of thumb is to take your annual income and multiply it by 10 to 12. Earn $70,000? That points to roughly $700,000 to $840,000 of coverage. It's popular because it's instant and usually lands in the right ballpark for a working parent.

But it's a blunt instrument. It ignores your mortgage size, your debts, how many children you have, how many years they actually need support, and whether your spouse earns enough to carry part of the load. Two families earning the same salary can have wildly different real needs. Use 10–12x as a sanity check — then size it properly with DIME.

The DIME method: a needs-based estimate

DIME is the standard way agents and planners build a needs-based figure. You add four numbers, then subtract what you already have. Each letter is a category of money your family would suddenly have to cover on their own.

• D — Debt. Everything you owe that isn't the mortgage: car loans, credit cards, student loans, personal loans. Add a few thousand for final expenses (a US funeral commonly runs $7,000–$12,000).
• I — Income replacement. The big one. Multiply the annual income your family relies on by the number of years they'd need it replaced — until the youngest child is independent, or until a surviving spouse reaches retirement. Ten years of a $60,000 contribution is $600,000.
• M — Mortgage. The remaining balance on your home loan, so the family can stay put or pay it off outright.
• E — Education. Estimated future cost of your children's schooling and college. A common planning figure is $100,000–$250,000 per child for a four-year degree, depending on public vs private.

Then subtract what's already in place:

(Debt + Income + Mortgage + Education) − (savings + investments + existing life insurance) = coverage you still need

That last subtraction is the step most people skip — and it's the one that keeps you from over-buying. Your 401(k), emergency fund, brokerage account and any group life policy through work all shrink the gap.

The factors that move your number

How many dependents — and for how long

A couple with no kids and a newborn family have very different time horizons. The income-replacement years usually run until the youngest child finishes school, so younger children push the number up. Once the kids are independent and the house is paid off, the need often shrinks dramatically.

Whether your spouse works

If your partner earns a salary that already covers a big share of the household, you may only need to replace the gap between their income and your combined spending — not your full paycheck. A single-income family, by contrast, typically needs more.

Existing coverage and savings

Group life through an employer (often 1–2x salary) is a useful base, but it's rarely enough on its own and it usually disappears when you leave the job. Count it, but don't rely on it as your whole plan. Substantial savings or a nearly paid-off mortgage can cut your target sharply.

A worked DIME example

Meet Sami, 34, earning $75,000. His wife works part-time; they have two young children, a mortgage, and a car loan. Here's his DIME breakdown:

Illustrative figures only. Your real number depends on your debts, income, mortgage, number of dependents, savings and existing coverage. Round to a clean policy size (most insurers sell in $250k/$500k/$1M bands).

Notice the contrast: the 10x rule would have suggested $750,000 for Sami, but DIME lands closer to $930,000 because of his mortgage and two kids. Most people would round up to a clean $1,000,000 20-year term policy — enough to carry the family until the children are grown and the house is paid.

Term vs whole life: which fits the need?

Once you know how much, the next question is what kind. The need you just calculated is mostly temporary — it shrinks as the mortgage gets paid and the kids grow up. That's exactly what term life is built for.

Premium ranges are illustrative and depend on age, health, term length and insurer. Get real quotes before deciding.

For the great majority of families, the answer is buy term and invest the difference: get the large death benefit you need for the cheapest possible premium, and put the money you save versus whole life into your own retirement and brokerage accounts. Whole life earns its place mainly for lifelong dependents (such as a child with special needs) or specific estate-planning goals. We break the comparison down in detail in our term vs whole life guide, and you can run the cost difference yourself with the term vs whole life calculator.

A few practical tips before you buy

• Match the term to the need. A 20-year term often covers the exact window until the kids are independent and the mortgage is gone.
• Buy young and healthy. Premiums rise with age and health changes, so locking in early is usually cheapest.
• Don't double-count income. If your spouse earns a real salary, replace only the shortfall, not the full household budget.
• Revisit after big life events. A new baby, a bigger mortgage or a paid-off house all change the right number — re-run DIME every few years.

Frequently asked questions