Disability Insurance Basics

Most people with jobs have life insurance. Very few have disability insurance. That priority is backwards.

A 35-year-old has roughly a 1 in 4 chance of becoming disabled for three months or longer before reaching retirement age. The probability of dying before 65 is significantly lower. Life insurance protects against the less likely event. Disability insurance protects against the more likely one. The gap in coverage patterns isn't rational — it's a product of how hard each type of insurance is to market. Death is binary and dramatic. Disability is gradual, varied, and uncomfortable to discuss.

The financial consequence of a long-term disability without income replacement can be more severe than death — because the expenses don't stop, and neither does the need to eat, pay rent, and cover medical costs that the disability itself may be generating.

Short-term vs. long-term disability — what each covers

Short-term disability insurance (STD) covers a portion of your income for a limited period — typically three to six months — after a qualifying disability. It activates quickly, often after a one or two week waiting period. Most employer plans pay 60% of your base salary. STD covers the gap between the injury or illness and when long-term disability kicks in.

Long-term disability insurance (LTD) covers income loss for extended periods — typically to age 65 or Social Security full retirement age — after the short-term period ends. The elimination period (the waiting period before benefits begin) is usually 90 days, meaning you need to cover three months of expenses through savings or short-term disability before LTD activates.

The most important disability insurance is long-term. A broken leg covered by short-term disability is manageable. An MS diagnosis, a severe back injury, a mental health condition that prevents returning to work — those are the scenarios where long-term disability coverage determines whether a financial life recovers or collapses.

The definition of disability — the most important policy term

How a policy defines 'disability' determines whether a claim is approved. There are two main definitions, and they produce dramatically different outcomes.

Own-occupation disability means you're considered disabled if you can't perform the specific duties of your own job. A surgeon who loses fine motor control in one hand is disabled under this definition even if they could theoretically work in an administrative role. This is the stronger definition — it's common in policies sold to physicians, lawyers, and other professionals whose earning power is tied to specific skills.

Any-occupation disability means you're only considered disabled if you can't perform any work for which you're reasonably qualified by education, training, or experience. Under this definition, the surgeon with the hand injury who could still teach or consult might not qualify. Group employer policies often start with own-occupation for two years and then switch to any-occupation — a transition that surprises many claimants.

When reviewing any disability policy, find the definition of disability and read it carefully. It's the clause that determines whether the insurance pays when you need it to.

How much coverage you need

Most disability policies replace 60% to 70% of your pre-disability income. Whether disability benefits are taxable depends on who paid the premiums: employer-paid premiums mean benefits are taxable as income, while individually-paid premiums mean benefits are received tax-free. A 60% benefit on a policy with employer-paid premiums may net to 45% to 50% of your pre-disability take-home — enough to cover essentials but not much more.

The coverage adequacy question: would 60% to 70% of your income cover your fixed monthly expenses — rent or mortgage, minimum debt payments, insurance premiums, food, utilities? For many people with full mortgage payments, car loans, and families, the answer is no without significant lifestyle changes. Supplemental individual policies can increase the replacement percentage.

Group coverage through your employer — what it usually misses

Many employers provide group long-term disability coverage as a benefit, often at no cost to the employee. This coverage is worth taking — but it comes with limitations that individual policies don't have.

Group policies are typically not portable — when you leave the job, coverage ends. An individual diagnosed with multiple sclerosis at 38 who leaves their job at 42 may find themselves uninsurable for individual disability coverage exactly when they need it most. Individual policies you own and pay for yourself continue as long as you pay the premiums, regardless of employment changes.

Group policies often cap the benefit at a monthly dollar amount — $5,000 or $8,000 a month is common. For higher earners, that cap represents a much smaller percentage replacement. A person earning $180,000 a year ($15,000 a month) receiving an $8,000 monthly benefit is getting about 53% replacement. An individual supplemental policy can close that gap.

What disability insurance doesn't cover

Disability insurance replaces income. It doesn't cover medical bills (that's health insurance), lost retirement contributions during the disability period, or costs that increase due to the disability itself — adaptive equipment, home modifications, paid caregiving. The income replacement is necessary but not sufficient for covering everything a long-term disability generates in new expenses.

Most policies also have exclusions for pre-existing conditions — conditions diagnosed or treated within a specific lookback period before the policy was issued. This is a key reason to obtain coverage while healthy rather than waiting. A back problem you're currently treating when you apply could be excluded from coverage, leaving you without benefits for the most likely cause of a disability.

The right time to get disability coverage is before you need it, before a diagnosis gives an insurer a reason to exclude the most relevant risk. By then, the window that was open is closed.