How Much Life Insurance Do I Need? The DIME Method, Explained
Most people either guess at their life insurance number or skip the decision entirely. You don't need an actuary — you need a framework. The DIME method gets you a defensible amount in a few minutes, and the rest of this guide shows how to adjust it to your life.
Why "10x your income" isn't the answer
The common shortcut — buy ten times your salary — is a reasonable starting guess, but it's blind to the things that actually determine the number: how much debt you carry, how long your family needs support, and what coverage you already have. Two people earning the same income can need wildly different amounts. So use 10x to sanity-check, not to decide.
The DIME method
DIME adds up the four things your policy should cover. Total them, subtract what you already have, and you have your target death benefit.
| Letter | Stands for | What to add up |
|---|---|---|
| D | Debt | All debts except the mortgage: cards, car loans, student loans, personal loans |
| I | Income | Your annual income × the number of years your family would need it replaced |
| M | Mortgage | The remaining balance on your home |
| E | Education | Estimated cost to get your children through school |
Add D + I + M + E, then subtract existing coverage and meaningful savings. The result is roughly how much new coverage to buy.
A worked example
Say you have $20k in non-mortgage debt (D), earn $70k and want 10 years of income replacement = $700k (I), owe $250k on your mortgage (M), and want $120k for your kids' education (E). That's $1.09M. If you already have $200k through work, you'd look for roughly $890k of additional term coverage. Change the income-replacement years and the number moves a lot — which is exactly the point.
The lever that matters most: income-replacement years
The "I" in DIME is where the real decision lives. Ask: how many years until your family would be financially independent — until the kids are grown, the mortgage is manageable, or a partner's income can carry things? Common answers range from 10 to 20+ years. Fewer years means a smaller, cheaper policy; more years means a larger one. Match the number to your actual timeline, not a round guess.
Match the term length to the need
Sizing the death benefit is half the decision; the other half is how long you need it. A level term policy locks your premium for a set period — often 10, 20 or 30 years. A good rule: choose a term that lasts until your biggest obligations are behind you (youngest child independent, mortgage paid). Buying a 30-year term in your early 30s, for example, carries protection through the whole child-raising and mortgage stretch.
Don't forget the non-earner
If one partner stays home, their work still has real economic value — childcare, logistics, household management — that would cost money to replace. Size a policy for them too, based on what replacing that work would cost.
Keep it simple and honest
The goal isn't a perfect number; it's a sufficient one your family can rely on. Run DIME, pick an income-replacement horizon you believe, choose a term that outlasts your obligations, and buy level term unless you have a specific reason not to. For that last decision, read term vs whole life insurance, and see what life insurance costs by state so your quote has context.
FAQ
Is 10x my income enough life insurance?
The '10x income' rule is a fast starting estimate, not a real answer. It ignores your debts, how many years your family actually needs support, and coverage you already have. Use it to get in the right ballpark, then refine with the DIME method below.
Should I buy term or whole life?
For most people protecting a family during their working and child-raising years, level term life covers the need for far less money. Whole life costs much more for the same death benefit and is usually only worth considering for specific estate or lifelong-dependent situations. See our term vs whole life guide.
Do stay-at-home parents need life insurance?
Often yes. A stay-at-home parent provides childcare, household management and more that would cost real money to replace. Covering that cost protects the surviving partner from a sudden new expense on top of their grief.