New on FinoLib · Volume V: Personal Finance
My latest article is now live on FinoLib, the free finance library I write: How Much Life Insurance Do You Need? A Household Calculation, from Volume V: Personal Finance. It is part 2 of a 3-part guide. Read the summary below for the substance of the topic, then continue to FinoLib for the complete treatment.
A closer look
Disability insurance replaces a portion of income (typically 50%–70%) if illness or injury prevents working — and the risk it covers is, for most working adults, meaningfully more likely than the risk life insurance covers. The Social Security Administration has estimated that more than one in four of today’s 20-year-olds will become disabled before reaching retirement age, yet disability coverage is bought far less often than life insurance.
Short-term disability typically covers a few months, often for common events like recovery from surgery or childbirth; long-term disability can extend for years or until retirement age; a commonly quoted rule of thumb puts an individual policy at roughly 1%–3% of annual income per year, more for riskier occupations and richer policy terms (quotes vary by insurer).
The gap is smaller than it looks — a disabled worker stops the 6% 401(k) deferral and most commuting costs — but it is still a gap of roughly $940–$1,210 a month for as long as the disability lasts. Where the employer offers the choice, paying the premium with after-tax dollars narrows it — you pay a little tax on the premium now so that any benefit later arrives tax-free.
The standard homeowners form, the HO-3, bundles property and liability coverage in six parts; the dwelling limit you choose sets most of the others:
Replacement cost vs actual cash value. Replacement cost pays to repair or replace with like materials, with no deduction for wear; actual cash value (ACV) subtracts depreciation. The standard HO-3 settles the house at replacement cost but belongings at ACV unless you add a replacement-cost endorsement (roughly 10% more premium). The house gets full replacement cost only if you insure it for at least 80% of what it would cost to rebuild.
Claims and future price. Insurers check a database (CLUE) holding seven years of claims on you and the house. A claim can raise your premium, and repeated claims can cost you the policy: Texas, for example, lets an insurer refuse to renew after three or more non-weather claims in three years. Save the policy for losses that would hurt and pay small ones yourself. Where no company will insure a home, a state FAIR Plan sells basic coverage at a higher price.
A worked example
Worked Example — Compare the Scenarios: Which Homeowners Deductible?
The year-eight household (Part 14.3) gets illustrative quotes: $2,000 a year with a $1,000 deductible, $1,760 with $2,500 and $1,580 with $5,000. In 2023, 5.3% of insured homes had a claim, and the average claim paid was $20,062, far above any of these deductibles. Expected yearly cost = premium + claim frequency × deductible. Deductible Premium Expected Deductible Paid Expected Yearly Cost Share of the Year-One $14,063 Fund $1,000 $2,000 5.3% × $1,000 = $53.00 $2,053.00 7% $2,500 $1,760 5.3% × $2,500 = $132.50 $1,892.50 18% $5,000 $1,580 5.3% × $5,000 = $265.00 $1,845.00 36% Break-even.
Under the hood
Under the Hood: Why Social Security Disability Is Not Enough
Social Security Disability Insurance is built to pay only for severe, long-lasting disability. You qualify only if your condition stops you from doing any substantial work, not just your own job; it has lasted or is expected to last at least 12 months, or to end in death; and you have waited five months, since the first benefit is paid for the sixth full month. “Substantial” means earning more than $1,690 a month in 2026 ($2,830 if blind), or $1,690 × 12 = $20,280 a year: a $75,000 earner who can still earn $21,000 at another job generally does not qualify. Private and group policies define disability more generously.
Why It Matters
Whole life is not inherently a scam — its cash-value and permanent-coverage features serve legitimate purposes in specific estate-planning situations. But for the large majority of households whose actual need is replacing income during working years while dependents are financially reliant on them, that need has a natural expiration date, which is precisely what term insurance is priced for — paying decades of whole-life premiums for coverage needed only for two or three of those decades is a mismatch between…
When This Breaks
The 10–12× income rule exists because most people will never run a DIME calculation, and for a mid-career earner with young children and a mortgage it often lands near the right range. It assumes dependents who rely on the income for many years, modest other assets and ordinary debts. It breaks in both directions: Too much.
What the full article covers
The full article includes worked examples, a look under the hood at the mechanics, a recap, a reveal-on-click quiz and the official sources behind every figure.
Volume V: Personal Finance
Read the full article on FinoLib
The complete article, How Much Life Insurance Do You Need? A Household Calculation, with every worked example, diagram, quiz and source, is free to read in Volume V, Personal Finance on finolib.com.
Explore the Finance Education Series: Vol. II — Capital Markets · Vol. I — Global Economy · Vol. III — Finance Encyclopedia · Vol. IV — Finance Careers · Vol. V — Personal Finance