How Much Life Insurance Do I Actually Need? (Three Honest Methods)
Three practical ways to size your life insurance coverage — the income-multiplier rule, the DIME method, and the human-life-value approach.
"How much life insurance do I need?" is the single most common question in personal finance, and the answer is almost always more than people instinctively guess. The point of life insurance is to replace the financial role you play in your family if you die — not to make survivors rich, but to keep their life intact. Here are three honest ways to size that.
Method 1: The income multiplier (fast and rough)
Multiply your annual gross income by 10 to 12. A 35-year-old earning $60,000 should carry roughly $600,000 to $720,000 of coverage. This rule undercounts for young parents (who have more years of exposure) and overcounts for people near retirement, but it gets you in the right ballpark in under a minute.
Method 2: The DIME formula (best for most families)
DIME stands for Debt, Income, Mortgage, Education. Add them up:
- Debt: total non-mortgage debt (credit cards, car loans, student loans).
- Income: years of income replacement needed (often the years until your youngest child finishes college) multiplied by your annual after-tax income.
- Mortgage: outstanding mortgage balance.
- Education: estimated cost of college for each child.
The total is your coverage need. A 35-year-old with $20,000 in debt, $50,000 net income, 18 years until the youngest is 22, a $200,000 mortgage, and two kids at $80,000 each for college would need roughly $20,000 + (50,000 × 18) + $200,000 + (80,000 × 2) = $1,280,000 in coverage.
Method 3: Human-life-value (precise but heavy)
Project your future after-tax earnings until retirement, subtract what you would consume yourself, then discount back to present value at a realistic investment rate (3–5 percent real). This is the gold-standard method used by professional planners. It is more accurate but requires assumptions about inflation, raises, and investment returns that most people would rather not guess.
How to choose between them
Use the income multiplier as a sanity check, but base the actual purchase on DIME if you have a family with debt and kids. The human-life-value method is worth running once if you can find a fee-only planner (a planner who charges hourly and does not sell policies), but for most people DIME is close enough and far easier.
Coverage is cheaper than people expect. A healthy 35-year-old non-smoker can usually buy a 20-year, $1,000,000 term policy for around $50 per month. The right question is rarely "can I afford the premium," it is "what happens to my family if I do not have it."
Things that change the answer
- Stay-at-home parents need real coverage too — replace the cost of childcare, household management, and lost-future-income.
- If you have employer-provided coverage, count it but assume it disappears when you change jobs.
- Existing savings reduce the need: every $100,000 of liquid net worth subtracts roughly the same from the coverage gap.
Recommendation
Run the DIME formula. Round up to the nearest $250,000. Get quotes from three independent brokers. Buy the policy. Revisit every five years or after any major life change (kid, house, divorce, large windfall).