How Much Life Insurance Do You Need? The DIME Method With a Worked Example
October 21, 2026
Life insurance replaces the financial contribution of a person whose death would hurt dependents. The right amount depends on who relies on your income, what debts you have, and what resources your family already has. Rules of thumb like '10 times your income' are simple but crude. The DIME method is a more tailored way to estimate need: add up Debt, Income replacement, Mortgage, and Education costs.
For example, take a 38-year-old earning $80,000 with two children, a $250,000 mortgage, $20,000 of other debt, and a goal of funding $100,000 of college for each child.
Skip the math and get your answer instantly:
Open the Retirement Calculator →The DIME Calculation
D (Debt): non-mortgage debts such as car loans, credit cards, and student loans: $20,000. I (Income): the number of years your family would need the income replaced, multiplied by annual income. If you want to replace income for 10 years until the children are independent: 10 × $80,000 = $800,000. M (Mortgage): the balance of the mortgage so your family can keep the home: $250,000. E (Education): future education costs: 2 × $100,000 = $200,000.
The total is $20,000 + $800,000 + $250,000 + $200,000 = $1,270,000.
| Component | Example | Amount |
|---|---|---|
| Debt | Car loan and credit cards | $20,000 |
| Income | 10 years x $80,000 | $800,000 |
| Mortgage | Remaining balance | $250,000 |
| Education | 2 children x $100,000 | $200,000 |
| Total need | $1,270,000 |
Subtract What You Already Have
Reduce the total by existing resources that would be available to your family: savings and investments, group life insurance through an employer (often 1 to 2 times salary), and survivor benefits from Social Security or pensions, which can be significant for families with young children. If the family has $150,000 in liquid savings and $80,000 in employer coverage, the gap is $1,270,000 − $230,000 = $1,040,000.
Also consider the survivor's own income, childcare costs that will arise if you are the caregiver, final expenses of $10,000 to $15,000, and inflation over the replacement period.
Term vs. Permanent Insurance
Term insurance covers a fixed period, such as 20 or 30 years, at a fixed premium, and is generally the most cost-effective way to cover temporary needs such as a mortgage and raising children. Permanent insurance (whole life, universal life) covers a lifetime and includes a cash value component, but costs much more per dollar of coverage. For most families with a coverage gap, term insurance delivers the necessary protection at lower cost. A healthy 38-year-old might pay a few hundred dollars a year for $500,000 of 20-year term coverage, though quotes vary by health, location, and insurer.
Match the term length to the longest obligation, often the youngest child reaching independence and the mortgage payoff date.
Common Mistakes
Insuring only the main earner and ignoring the cost of replacing a stay-at-home parent's contributions (childcare, household management), relying only on employer coverage that disappears if you change jobs, buying a policy that is too small because of a rule of thumb, and not reviewing coverage after life changes such as a new child, a new mortgage, or a promotion. Review at least every few years.
Getting Quotes
Compare quotes from several insurers or use an independent broker. Be accurate on the application because misrepresentation can lead to denied claims. Name beneficiaries and keep them updated. A life insurance needs analysis from a licensed adviser can refine the numbers. This article is educational and not personalized financial advice.
Frequently Asked Questions
What does DIME stand for?
Debt, Income, Mortgage, and Education.
How many years of income should I replace?
Typically until children are independent and a surviving spouse can adjust, often 10 to 20 years.
Is term life insurance enough?
For most families with temporary needs, yes, because it is the least expensive way to buy large coverage.
Does employer life insurance count?
Yes, but it often ends if you leave the job, so it should not be your only coverage.
Should a stay-at-home parent have life insurance?
Usually yes, to cover the cost of replacing childcare and household work.