Disability Insurance Calculator
Calculate how much disability coverage you actually need, your gap from employer plans, how long savings last during the elimination period, and estimated premium for supplemental coverage.
How Disability Insurance Works
Disability insurance replaces a portion of your income if you are unable to work due to illness or injury. One in four Americans will experience a disability lasting 90 days or more before age 65, according to the Social Security Administration. Yet most workers either rely entirely on employer group coverage — which often has significant gaps — or carry no individual coverage at all.
Short-Term vs. Long-Term Disability
These are two distinct products that work in sequence:
- Short-term disability (STD): Covers the first 3–6 months of disability after a brief elimination period (typically 7–14 days). Benefits are 60%–70% of salary. Most employers include STD in their benefits package; cost is often fully or partially employer-paid.
- Long-term disability (LTD): Picks up where STD ends and provides income replacement for years or until a defined retirement age. Employer group LTD typically replaces 60% of salary but caps benefits at $5,000–$10,000/month — a significant shortfall for high-income earners.
The typical design: injury occurs → use sick time/PTO → STD kicks in after 7–14 days → LTD kicks in at 90–180 days. If your employer has no STD, you bridge the first 90 days entirely from savings.
The Employer LTD Cap Problem
Employer LTD plans typically replace 60% of salary up to a monthly cap. If you earn $150,000/year ($12,500/month), 60% is $7,500 — but if your employer's plan caps benefits at $5,000/month, your effective replacement rate is only 40% of income. This gap is why high-income earners often need supplemental individual LTD policies.
Disability insurance is a core pillar of financial protection that becomes even more critical when a household has dependents or high fixed obligations. If you carry a mortgage, have children in childcare, or are the primary earner, losing your income without LTD coverage could force liquidation of retirement accounts or a home sale within months. The disability insurance guide covers exactly how to size a policy and what riders are worth the premium.
What Disability Insurance Costs
| Monthly Benefit | Age 30 | Age 40 | Age 50 |
|---|---|---|---|
| $3,000/month | $50–$80 | $80–$130 | $130–$200 |
| $5,000/month | $80–$130 | $130–$210 | $200–$320 |
| $8,000/month | $125–$200 | $200–$330 | $320–$500 |
Estimated monthly premiums for own-occupation individual LTD with 90-day elimination, to age 65, professional/office occupation class. Rates vary significantly by insurer, health, and state.
Managing disability risk is one part of a broader strategy for handling major life expenses. See the guide to managing major life expenses on one budget for how disability coverage fits into a complete financial protection picture alongside childcare costs and debt obligations.
Frequently Asked Questions
How much disability insurance do I need?
The standard recommendation is coverage equal to 60%–70% of gross income. Start by calculating your essential monthly expenses (housing, debt payments, food, utilities, insurance) — this is your minimum replacement need. If employer LTD covers only 40% of your income due to benefit caps, you need supplemental individual coverage for the remaining 20%–30%.
What is the elimination period and how long should it be?
The elimination period is the waiting period before benefits start — similar to a deductible in time. A 90-day elimination period (the most common choice) balances premium savings with savings requirements: you need 90 days of expenses in liquid savings before benefits start. A 180-day period further reduces premium by 20%–30% but requires 6 months of cash reserves. A 30-day period costs more but requires less savings.
Is employer disability insurance enough?
Often not, particularly for higher earners. Employer group LTD is typically capped at $5,000–$10,000/month. If you earn $180,000/year, 60% is $9,000/month — but a $6,000 cap leaves a $3,000/month gap. Additionally, employer group coverage is not portable: if you change jobs, your coverage disappears. Individual policies follow you regardless of employment.
Are disability insurance benefits taxable?
It depends on who paid the premium. If your employer paid the premiums (most employer group coverage), benefits are taxable income. If you paid premiums with after-tax dollars (individual policies or voluntary group plans), benefits are tax-free. This tax treatment affects how much coverage you actually need — tax-free benefits cover more effective purchasing power per dollar of benefit.
What are the most important disability insurance riders?
The three most valuable riders: (1) Own-occupation definition — ensures you're covered if you can't do your specific job, not just any job; (2) Non-cancelable and guaranteed renewable — the insurer can't cancel or raise rates as long as you pay premiums; (3) Future purchase option (FPO) — lets you increase coverage as your income grows without new medical underwriting. Cost of living adjustment (COLA) riders are valuable for long-term claims, adding 3%–5% to the benefit annually.