How Much Life Insurance Do You Need? Walk the DIME Method

Ask an insurance agent how much life insurance you need and the answer tends to match whatever they are selling. Ask the internet and you get "ten times your income," a shortcut that is wrong in both directions depending on your life. The honest answer takes about twenty minutes: add up four numbers, subtract what you already have, and buy plain term coverage for the difference. That is the DIME method, and it is worth walking through by hand once before you let the life insurance calculator do it for you forever after.

DIME: four letters, one total

DIME stands for Debt, Income, Mortgage, Education: the four holes your death would leave in the household finances.

• Debt: everything except the mortgage that would outlive you: car loans, credit cards, personal loans, private student loans with a cosigner. Many people add $10,000–15,000 here for final expenses.
• Income: your annual take-home multiplied by the number of years your family would need it replaced. A common anchor is the years until your youngest child is independent.
• Mortgage: the remaining balance, so the house becomes a paid-off given rather than a monthly question.
• Education: a college contribution per child, whatever amount matches your intentions rather than a sticker-price fantasy.

Worked out on a real family

Maya earns $85,000. Her spouse Jordan earns $55,000. Their kids are three and six. Here is Maya's DIME math:

• Debt: a $14,000 car loan, $4,000 of credit card balances, and $10,000 set aside for final expenses: $28,000.
• Income: fifteen years of replacement, until the three-year-old is eighteen: 15 × $85,000 = $1,275,000.
• Mortgage: $260,000 remaining.
• Education: $60,000 per child: $120,000.

Gross total: $1,683,000. Now subtract what already exists to fill those holes: the family holds about $90,000 in savings and investments (a number you can pull straight from the net worth calculator), and Maya carries $85,000 of free group coverage through work. That brings the gap to roughly $1.5 million. Maya shops for a $1.5 million term policy, and Jordan runs the same math on his own numbers, because each earner needs their own policy sized to their own hole.

Notice what DIME quietly assumes: the payout sits in cash and gets spent down dollar for dollar. It ignores Jordan's ongoing income, any survivor benefits, and the fact that a lump sum can be invested while it is drawn down. In other words, DIME rounds up. Most families treat that as a feature, not a bug: the extra margin covers the things no worksheet lists.

The 10x-income shortcut and where it goes blind

Multiplying income by ten is fine as a gut check: for Maya it says $850,000, meaningfully under her DIME number. The shortcut has three blind spots worth naming:

• It ignores your balance sheet. Two families with identical salaries can have a $260,000 mortgage or a paid-off house, $4,000 of card debt or $40,000. Income multiples cannot see any of it.
• It ignores time. A parent of a newborn needs income replaced for nearly two decades; a parent of a high school senior needs a few years. Ten times income treats them identically.
• It prices a stay-at-home parent at zero. No salary, no multiple, no coverage: an obviously wrong answer, covered below.

Why term is the default answer

Term life insurance is pure coverage: you pay a level premium for 10, 20, or 30 years, and if you die during the term your beneficiaries receive the payout. No cash value, no investment component, which is exactly why a healthy thirty-something can often buy a seven-figure death benefit for the price of a few streaming subscriptions a month. Permanent policies (whole and universal life) bundle insurance with a savings vehicle at many times the cost, and they solve narrower problems: estate planning, a dependent who will never be financially independent. For a household whose need is "replace my income while the kids grow up and the mortgage exists," the need itself expires, so coverage that expires with it is the efficient match. That is why term is the standard answer among planners who do not earn commissions.

One piece of housekeeping matters as much as the amount: the beneficiary designation. Name a primary and a contingent, revisit both after any marriage, divorce, or birth, and know that naming a minor child directly creates a legal mess: many parents route the money through a trust or a custodial arrangement instead.

The stay-at-home parent has a salary too

If Jordan left work to run the household, his DIME income line would read zero, and the shortcut would suggest no coverage at all. Then price what his death would force Maya to buy: full-time care for a toddler, after-school coverage for years, and the thousand hours of logistics that currently cost nothing. In many metros that replacement bill runs well into the tens of thousands per year for a decade or more, which is why several hundred thousand dollars of term coverage on a non-earning parent is a common and reasonable position. Insure the labor, not the paycheck.

Laddering, in one paragraph

Your need is not flat: it peaks now and shrinks every year as the mortgage amortizes and children age toward independence. Laddering matches that shape by splitting one big policy into several smaller ones with staggered terms: for Maya, perhaps $500,000 for 30 years, $500,000 for 20, and $500,000 for 10. All three overlap during the maximum-need years, then coverage steps down as each term expires, and the total premium runs meaningfully below one $1.5 million 30-year policy. It adds paperwork, saves money, and changes nothing about the protection when it matters most.

The DIME inputs all live on your balance sheet: the debts, the mortgage, the savings that offset the need. Keeping that picture current in one net worth view means the twenty-minute recalculation, every few years or after every big life change, starts with the numbers already filled in.