Personal Finance · 6 min read · 2026-03-06
The 9-variable term life sizing.
Term life insurance is the right answer for most households. Nine variables size it correctly.
Most households are under-insured by 30–60%.
Industry studies consistently find that the median U.S. household is under-insured by 30–60% relative to actual income-replacement need. The 'rule of thumb' methods (10x income) are insufficient for households with young children, mortgage balances, and education obligations. The DIME framework is more accurate.
The nine indicators
The nine variables of right-sized term.
Each is a specific obligation or income need. The composite produces the actual coverage requirement, not a guess.
Debt outstanding (mortgage + non-mortgage)
Source: actual balances
Mortgage balance plus credit card, auto, student loans. Coverage replaces the cash to extinguish debt.
Income replacement need × years
Threshold: 10–15× income typical
Cover the income gap until dependents are self-sufficient or until surviving spouse can independently support the household.
Mortgage payoff with non-employment income
Pattern: spouse's earning capacity
If surviving spouse cannot maintain mortgage on solo income, the coverage must include payoff capacity.
Education obligations for dependents
Threshold: $200–500K for college
Future education costs should be funded by the policy if dependents are pre-college and current 529 balances are insufficient.
Final expenses and estate liquidity
Threshold: $20–50K
Funeral costs, probate, immediate liquidity needs. Often underestimated in the planning.
Existing employer-provided coverage
Pattern: 1–3× salary typical
Employer term coverage reduces the need for individual policy. But it disappears at job change; not durable enough alone.
Existing assets that offset need
Pattern: investment portfolio, equity
Existing assets reduce the gross coverage need. The net coverage required is need minus existing assets.
Spouse's income and earning capacity
Pattern: dual-income households
Dual-earner households need lower coverage. Single-earner households have higher coverage needs.
Term length matched to obligation duration
Pattern: 20-year vs 30-year
Term should match the period of greatest dependency. Young parents need 20–30 year terms; near-empty-nesters can use shorter terms.
DIME formula vs 10x income
The 'multiply your income by 10' rule is a marketing simplification. It produces approximately the right answer for some households and is materially wrong for most. The DIME framework — Debt + Income replacement + Mortgage + Education — produces a more accurate coverage need by adding up the specific obligations.
For a household with $80,000 income, $300,000 mortgage, $25,000 of non-mortgage debt, two children needing $400,000 of future education, and 15 years of income replacement, DIME produces approximately $1.9 million of coverage need. The 10x rule produces $800,000 — less than half the actual need.
Term length matters as much as coverage amount
Term life insurance is fixed-duration coverage. A 20-year term on a 30-year-old expires when they're 50; a 30-year term on the same person expires at 60. The choice should match the period of dependency. Households with young children typically need 25–30 year terms to cover until the youngest child is independent.
Most term insurance can be renewed or converted, but the conversion options become expensive in older years. Buying the right term length at the start avoids the painful late-life conversion or re-underwriting at higher rates.
Pricing dynamics — buy young, healthy, big
Term life pricing is dramatically age-sensitive. A 30-year-old non-smoker can typically buy $1M of 30-year term for $40–60/month. The same person at 45 pays roughly 3–4× as much. At 55, term coverage becomes prohibitively expensive for most households.
The discipline is to buy the maximum needed coverage as young and healthy as possible. Multi-policy laddering (some 20-year, some 30-year) can lower aggregate premium while matching coverage to declining need over time.
When to drop term coverage
Term insurance becomes unnecessary when the obligations it covers are extinguished or self-funded. The mortgage paid off, the children independent, the retirement portfolio adequate to support the surviving spouse — at that point, the insurance is paying premium for protection that is no longer needed.
Many households over-insure for years past the point of need because the policy is on auto-pay and never reviewed. Annual review of coverage need against current obligations and assets is the discipline.
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Common questions
Questions.
How much term life do I need?
DIME analysis typically produces 8–15× annual income for households with young children. Run the analysis specifically; don't rely on the rule of thumb.
Term or whole life?
Term for nearly all households. Whole life has narrow estate-planning use cases but is not the right answer for general protection.
What's level term vs annual renewable term?
Level term has fixed premium for the entire term (10, 20, 30 years). Annual renewable term increases premium each year. Level term is more common and predictable.
Can I buy term at 60?
Yes, but expensive. Some carriers offer 10- or 15-year term to age 75. The premiums are 5–10× younger-age pricing.
What about supplemental employer coverage?
Useful but not portable. Employer coverage typically lapses at job change; relying entirely on it is risky.
How do I find the right policy?
Compare quotes from multiple carriers via licensed brokers. Term life is commodity priced; the structural differences are smaller than advertised.
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