Ask five people how much life insurance they need and at least three will say some version of "ten times my salary" — a number they've heard somewhere but never actually calculated. It's not a bad starting instinct. It's also not a real answer, because a flat multiple has no idea whether you have a mortgage, how old your kids are, whether your spouse's income alone could cover the bills, or whether you're carrying debt that would otherwise fall on someone else.
Life insurance exists to answer one specific question: if you weren't here, what would the people who depend on your income actually need, in dollars, to keep going? That's a number you can build from your own numbers — not borrow from a rule of thumb.
Why the salary-multiple rule falls short
The appeal of "multiply your income by some number" is that it's fast. The problem is that income was never really the thing at risk — your family's expenses and obligations were. Two people earning the identical salary can have wildly different real needs: one has a paid-off house, an working spouse, and grown kids; the other has a fresh mortgage, a one-income household, and toddlers who are eighteen years from being financially independent. A flat multiplier treats them the same. A calculation doesn't.
The other issue with a rule of thumb is that it tends to get "rounded down" in practice — people anchor to whatever number sounds affordable rather than whatever number is actually needed, then work backward to justify it. Building the number from real line items removes that temptation, because you can see exactly what each piece is for.
The DIME method: add up what your family would actually need
One of the more durable ways to size a policy is to walk through four categories and add them up. It's commonly shortened to DIME — Debt, Income, Mortgage, Education — and each letter maps to a real, concrete gap that a death benefit would need to fill.
| Letter | What it covers | How to estimate it |
|---|---|---|
| D — Debt | Everything besides the mortgage that wouldn't disappear with you — car loans, credit cards, personal loans, co-signed debt. | Add up current balances. This is usually the easiest number on the list. |
| I — Income | The years of income your household would need replaced while your dependents rely on it — until kids are grown, a spouse could retrain, or retirement was already close. | Estimate the number of years of support needed, multiplied by the income being replaced (not necessarily all of it, if a surviving spouse also earns). |
| M — Mortgage | What's left on the home loan, so a surviving spouse or partner isn't forced to sell or refinance under pressure. | Your current mortgage payoff balance, not the original loan amount. |
| E — Education | Future costs you'd still want funded — college, trade school, or anything else already part of the plan. | A rough per-child estimate based on the kind of education you're aiming for, times the number of kids. |
Add the four together, then subtract what you already have working in your favor — existing savings, investments, and any coverage you already carry through a workplace plan. What's left is a reasonable starting target for new coverage, not a final answer, but a number built from your actual life instead of a guess.
How long the coverage should actually last
For most households working through this exercise, term life insurance — coverage for a fixed number of years rather than for life — is the tool that matches the job. The length should track your longest real obligation, not an arbitrary round number. If your mortgage has two decades left and your youngest child is eight, a term that runs at least until the mortgage is paid off and the kids are grown covers the years when the gap would actually hurt.
It's worth revisiting the number periodically rather than setting it once and forgetting it. A mortgage balance shrinks, kids age out of the "still eighteen years from independence" category, and a spouse's income can grow into covering more of the gap on its own. Coverage that made sense at thirty can be oversized by fifty — and coverage that felt like plenty at the start of a mortgage can look thin ten years and one more kid later.
When you might need less coverage — or none at all
Life insurance solves a specific problem: someone else's finances depending on income that would stop. That means the honest answer for some people is genuinely "not much" or "not yet."
- No dependents and no shared debt. If nobody relies on your income and you haven't co-signed anything, there's no financial gap for a policy to fill — though that can change fast with a marriage, a child, or a cosigned loan.
- You're already well covered by savings. If your household's investments and savings could realistically replace your income outright, a large policy is doing less work.
- You're near or in retirement with the mortgage paid off. Once the big obligations are gone and retirement income is already arranged, the case for a large death benefit weakens considerably.
None of that is an argument against ever having coverage — it's a reminder that the right amount is a moving target tied to your actual obligations, and "zero" is a legitimate answer at some life stages, not a failure to plan.
Mistakes that leave people over- or under-insured
- Relying only on a workplace policy. Employer-provided coverage is often a flat amount or a small multiple of salary, and it typically ends the moment you leave the job — not a full plan on its own.
- Forgetting a stay-at-home parent needs coverage too. Replacing unpaid childcare, household management, and everything else that income doesn't capture is a real cost, even without a paycheck attached to it.
- Buying once and never adjusting. A new mortgage, a new baby, or a paid-off car loan all change the real number — a policy set at twenty-five and never revisited may no longer match the life it's meant to protect.
- Letting the fine print go unread. How a policy defines its terms, what can change it, and what would keep a claim from paying out are worth understanding before you sign, not after.
- Sizing coverage to what feels affordable instead of what's needed. It's reasonable to phase coverage in as your budget allows, but it helps to know the real target first, rather than backing into a number that was never actually calculated.
