How to calculate how much life insurance you need (DIME method).

To calculate how much life insurance you need, add four numbers together and subtract two. Add total debt, the income the household needs replaced, the remaining mortgage balance, and projected education costs. Then subtract existing in-force coverage and liquid assets available to the survivors. The difference is the coverage gap, and that gap is the face amount worth quoting. The life insurance calculator runs the full version of this in a few seconds if you want the number before reading the method.

That framework is usually called DIME, for Debt, Income, Mortgage, and Education. It exists because the common shortcuts are unreliable. Ten times income is a starting estimate, not an answer. It says nothing about whether the mortgage is nearly paid off or freshly written, whether there are two children five years from college or none, or whether the client already carries a group policy that disappears when the job does.

The four inputs, in order

Debt

Total every non-mortgage obligation that would survive the client: credit cards, auto loans, personal loans, outstanding medical balances, co-signed student debt, and any business debt personally guaranteed. Add a final-expense allowance on top, typically ten to twenty thousand dollars for funeral costs, estate administration, and the small bills that arrive in the first ninety days.

Income

This is the largest and most judgment-heavy number. Decide how many years of income the survivors need and multiply. A household with young children commonly needs replacement until the youngest is independent, which can be fifteen to twenty years. A household five years from retirement with a funded plan may need three to five. Use net income rather than gross, since the goal is replacing spendable dollars, and subtract the deceased's own consumption if you want a tighter figure.

Mortgage

Use the current payoff balance, not the original loan amount and not the home value. If the plan is for the survivors to stay in the home, the balance belongs in the total. If the plan is to downsize, a portion of the balance may be covered by sale proceeds, and the input should reflect only the shortfall.

Education

Estimate per child rather than in aggregate. Multiply the expected annual cost of the target school type by four, then adjust for existing 529 balances and any expected aid. This is the input clients most often guess low on, because they price today's tuition rather than tuition in the year the child actually enrolls.

What to subtract

Two categories reduce the need. The first is existing coverage, including individual policies and employer group coverage. Group coverage deserves a caution: it is usually a multiple of salary, it usually ends at termination, and it is frequently the only coverage a client has. Counting it fully against the need can leave a household uninsured at exactly the moment income has already stopped.

The second is liquid assets the survivors can actually reach. Taxable brokerage accounts, cash, and inherited retirement accounts count, with the caveat that retirement accounts carry income tax on distribution and, for most non-spouse beneficiaries, a ten-year drawdown window. Illiquid assets such as a closely held business interest or a second property should generally be excluded, because forcing a sale in the first year is not a plan.

The number that matters is not the coverage amount. It is the coverage amount the household still lacks after everything already in place is counted honestly.

A worked example

A forty-two year old with two children, ninety thousand in net income, a two hundred eighty thousand dollar mortgage balance, thirty-five thousand in non-mortgage debt, and two children eleven and thirteen years from college.

• Debt: 35,000 plus a 15,000 final-expense allowance equals 50,000.
• Income: 90,000 replaced for 16 years equals 1,440,000.
• Mortgage: 280,000.
• Education: 140,000 per child at a public in-state estimate, so 280,000, less 40,000 already in 529 accounts equals 240,000.
• Gross need: 2,010,000. Subtract 180,000 in group coverage and 120,000 in liquid assets. Coverage gap: 1,710,000.

The useful part of the exercise is not the final figure. It is that the client can see which input is driving it. Change the income replacement window from sixteen years to ten and the number drops by more than five hundred thousand. That is a conversation about what the household actually wants, not a debate about a rule of thumb.

Edge cases worth catching

• Stay-at-home spouse. Replace the cost of the services provided, not a salary of zero. Childcare, transportation, and household management commonly total thirty to fifty thousand a year.
• Business owners. Personal coverage and buy-sell funding are separate calculations. Running them together understates both.
• Estate liquidity. A taxable estate may need coverage purely to pay the tax without forcing a sale. Check exposure with the estate tax calculator before sizing the policy.
• Existing permanent policies. Cash value is not death benefit. Count the death benefit against the need and treat cash value as a liquid asset only if the client would actually access it.

Common questions

What is the DIME method?

DIME stands for Debt, Income, Mortgage, and Education. You total those four obligations, subtract existing coverage and liquid assets, and the remainder is the coverage gap.

Is ten times income a good rule of thumb?

It is a reasonable starting estimate and a poor final answer. It ignores mortgage balance, existing coverage, education plans, and how many years of income the household actually needs replaced.

Should I include a stay-at-home spouse in the calculation?

Yes. Replace the cost of the services that household provides, typically childcare, transportation, and household management, which commonly runs into five figures per year.

How often should the number be recalculated?

At any event that changes the inputs: a new mortgage, a birth, a job change, a large debt payoff, or a change in group coverage at work.

Run the numbers in the life insurance calculator, or get in touch if you want help positioning the result in a client meeting.

Written for licensed life and annuity producers. This article is educational and is not financial, tax, or legal advice. Confirm current figures and client-specific outcomes with a qualified tax professional.