The math
You probably insured the wrong risk.
Most households with a working-age earner carry life insurance and no disability cover. Social Security's own actuaries put the chance of becoming disabled before retirement at 23.7% and the chance of dying at 12.8%. The event almost nobody insures is the one roughly twice as likely to happen.
The numbers, from the people who keep them
The Social Security Administration's Office of the Chief Actuary publishes a table every year giving the probability that a young insured worker will become disabled or die before reaching retirement age. It is not a marketing document and nobody is selling anything with it.
For a worker insured at age 20 in 2025, with a normal retirement age of 67:
Before reaching retirement age
SSA Actuarial Note 2025.6, Tables A and B, all insured workers
- Becomes disabled
- 23.7%
- Dies at all
- 12.8%
- Dies without ever being disabled
- 8.0%
- Reaches 67 with neither
- 68.3%
Disability is 1.9 times as likely as dying, and 3.0 times as likely as dying without ever having been disabled. Nearly a third of workers experience one or the other before 67.
And it is not close at any age
| By age | Men: disabled | Men: died | Women: disabled | Women: died |
|---|---|---|---|---|
| 30 | 1.7% | 1.4% | 1.4% | 0.5% |
| 40 | 3.8% | 3.2% | 3.7% | 1.3% |
| 50 | 7.3% | 4.9% | 8.0% | 2.2% |
| 60 | 16.1% | 7.8% | 17.4% | 3.9% |
| 67 | 23.5% | 10.6% | 24.0% | 5.4% |
The gap widens with age and it is far larger for women, whose chance of disability by 67 is 24.0% against 5.4% for death. That is roughly 4.4 to one.
Death is the risk people imagine, because it is vivid and final. Disability is the risk that actually arrives.
The asymmetry that makes it worse, not just likelier
Here is the part that gets missed even by people who know the probabilities.
When someone dies, the household loses their income. It also loses their living costs. That is a brutal thing to write down, and it is why life insurance is sized against a net figure rather than a gross one.
When someone becomes disabled, the household loses the income and keeps the person, which is the good news, and keeps all their costs, and usually adds more: medical care, equipment, adaptations, sometimes a second earner cutting hours to provide care.
The same income, two different events
An earner on $80,000 in a household spending $70,000 a year
- Annual gap if they die
- $59,000
- Annual gap if they are disabled
- $90,500
- Disability is worse by
- 1.53x
The cost assumptions are illustrative and yours will differ. The direction does not: one event removes an income and some expenses, the other removes an income and adds expenses.
So the more likely event is also the more expensive one, and it is the one most households have no cover for at all.
Why people get this wrong
Life insurance is sold; disability insurance is bought. Term life is cheap, simple and heavily marketed. Disability cover is complicated, the definitions matter enormously, and nobody rings you about it.
People assume their employer has it covered. Many do have group long-term disability, and it is usually thinner than assumed. A typical policy replaces around 60% of income, and if your employer paid the premium the benefit is taxable, so the net replacement is closer to 46%.
On $80,000 of income that is $36,480 against expenses that have gone up rather than down, a shortfall of $43,520 a year before anything else. Group cover also typically ends when the job does, which is a problem given that the job ending is precisely what you are insuring against.
And people assume Social Security will catch them. It might, eventually. The definition is strict: SSA itself notes that its disability beneficiaries are among the most severely impaired in the country, and that the standard is an inability to engage in any substantial gainful activity expected to last at least twelve months or result in death. There is a five-month waiting period before benefits begin. It is a floor against destitution, not income replacement.
What actually matters in a policy
If you take one thing from this essay it should be this: with disability cover the definition is the product. Two policies with identical premiums and replacement rates can behave completely differently.
Own-occupation versus any-occupation. An own-occupation policy pays if you cannot do your specific job. An any-occupation policy pays only if you cannot do any work you are reasonably suited to. A surgeon who loses fine motor control is disabled under the first definition and quite possibly not under the second. This single clause matters more than the headline percentage.
Whether it is non-cancellable and guaranteed renewable. Meaning the insurer cannot change the premium or the terms once issued.
The elimination period. How long before benefits start, typically 90 to 180 days. Longer is cheaper, and it has to be covered by your emergency fund, which is one of the clearer arguments for holding one.
Who pays the premium. If you pay with after-tax money, the benefit is generally tax-free. If your employer pays, it generally is not. That distinction can be worth more than a difference in the replacement rate.
Whether benefits are inflation-adjusted, since a claim at 40 might run for twenty-five years.
Where this sits among everything else
Insurance is not an investment and should not be thought of as one. It is the purchase of a floor, and the right amount is the smallest that prevents a catastrophe rather than the largest you can afford.
That said, this belongs near the top of the order of operations, above most of the optimization this site writes about. Getting asset location right is worth real money over decades. Losing your income for twenty years without cover is not a suboptimal outcome, it is a different life.
Term life still matters. Nothing here argues against it. If people depend on your income, you need it, it is cheap, and term is almost always the right structure. The argument is that life cover alone leaves the larger risk uninsured.
And if nobody depends on your income, you may need neither. Disability cover protects your own earning power, which matters whether or not you have dependents. Life insurance mostly protects other people, which is why a single person with no dependents often needs the first and not the second. The common pattern of buying the second and skipping the first is close to exactly backwards.
What this essay cannot tell you
Prices. They depend on age, occupation, health and the definitions above, and any figure here would be wrong for you. Get quotes.
Whether you already have it. Check your benefits summary rather than assuming. Many people have short-term cover and no long-term cover, which protects against the disruption they could have absorbed anyway.
The SSA figures describe a cohort, not you. They are for an illustrative worker insured at 20 in 2025, maintaining insured status to 67. Your occupation and health move your own odds in both directions.
The thing worth sitting with is simply that the risk you are most likely to face during your working life is the one you probably have no cover for, and it is the more expensive of the two when it arrives.
Sources and further reading
Every probability in this essay is read directly from SSA's actuarial tables. The cost illustration is our own and its assumptions are stated above.
- Actuarial Note 2025.6: Disability and Death Probability Tables for Insured Workers Who Attain Age 20 in 2025, SSA Office of the Chief Actuary, September 2025. Table A gives the 23.7% disability probability and the 8.0% death-and-never-disabled probability; Table B gives the 12.8% total death probability; Table E gives the age-by-age figures reproduced above.
- Disability Benefits, SSA publication 05-10029, for the definition of disability, the work requirements and the application process.
- my Social Security, which shows your own estimated disability benefit alongside your retirement estimate. Most people have never looked at it.