Disability insurance calculator

Disability insurance: protecting your most valuable asset

Your ability to earn income is almost certainly your largest financial asset. A 35-year-old earning $100,000/year has $3 million in future earnings potential over a 30-year career. Yet most Americans spend far more insuring their homes and cars than their income — and far fewer have disability coverage than life insurance, despite disability being statistically far more likely during working years.

The probability problem

The Social Security Administration estimates that a 20-year-old worker has a 1-in-4 chance of becoming disabled before retirement. For people in their 30s and 40s, a disabling illness or injury is roughly 3–5 times more likely than death during their working years. Back injuries, cancer, heart disease, and mental health conditions are the leading causes of long-term disability claims — not dramatic accidents as most people imagine.

How the benefit calculation works

The industry standard is to replace 60–70% of gross monthly income. This target is based on two observations: (1) disability benefits paid on personally-purchased policies are usually tax-free, so 60% gross ≈ 80–85% of net take-home; and (2) maintaining a financial incentive to return to work is important for both the insurer and the insured. The formula is simple:

Monthly benefit = Gross monthly income × replacement rate

Most individual policies cap at 60–70% regardless of what percentage you request. Your income must be documented at claim time, so keeping records of bonuses and self-employment income matters.

The elimination period: your time deductible

The elimination period (also called a waiting period) is the number of days you must be continuously disabled before benefits begin. The most common options are 30, 60, 90, and 180 days. Choosing a longer elimination period reduces your premium — moving from 30 days to 90 days cuts the premium by roughly 30–40%. The tradeoff is that you need sufficient emergency savings to cover expenses during the waiting period.

Benefit period: how long protection lasts

Short-term disability (STD) policies cover 3–6 months. Long-term disability (LTD) policies begin where STD ends and can last 2 years, 5 years, 10 years, or to age 65. For most professionals under 50, a to-age-65 benefit period is worth the additional premium — it protects against the relatively low-probability but catastrophic scenario of a permanent disability in your 40s.

Premium estimation

Individual disability insurance premiums typically run 1–3% of annual income per year. Women pay more than men (30–40% higher rates), and occupation class matters — a surgeon pays more than a CPA for the same coverage because surgical hands are more disability-prone and harder to replace. The premium estimate in this calculator uses industry averages and should be treated as a planning ballpark; get actual quotes from 3+ insurers for accurate pricing.

Employer group vs. individual policy

Group disability through an employer is usually cheaper but has significant limitations: benefits are taxable if the employer pays premiums, coverage often ends when you leave the job, monthly caps ($10,000–$15,000) underserve high earners, and group policies rarely offer true own-occupation definitions. An individual policy is portable, can use your specific occupation definition, and continues regardless of employment changes — the gold standard for anyone whose income is critical to their household.