How to use Disability / Income Protection Calculator
The disability insurance calculator determines how much income-protection coverage you need, showing your monthly benefit target, benefit period and the coverage gap versus your existing short-term and long-term disability policies. It incorporates the standard 60–70% income-replacement guideline and your essential monthly expenses.
- Enter your gross and net monthly income.
- Add essential monthly expenses (mortgage/rent, utilities, food, minimum debt payments).
- Enter existing employer short-term and long-term disability coverage (% of income).
- Set your desired benefit period (2 years, 5 years or to age 65).
- Review the monthly benefit needed and your coverage gap.
Your data never leaves your device — 100% private processing.
Short-term vs long-term disability
Short-term disability (STD) covers the first 90 days to two years of an illness or injury, typically paying 60–80% of salary. Long-term disability (LTD) kicks in after STD expires and can run to age 65 for total disability. The most common cause of disability claims is musculoskeletal issues (back, joint), followed by cancer and mental health. Most employer LTD covers 60% of salary, but is taxable if premiums are employer-paid — meaning net replacement may be only 40–45%.
| Type | Waiting period | Benefit period | Typical coverage | Notes |
|---|---|---|---|---|
| STD (employer) | 7–14 days | 90 days – 2 yr | 60–80% of salary | Usually employer-provided |
| LTD (employer) | After STD | To age 65 | 60% of salary | Taxable if employer-paid |
| Individual LTD | 30–180 days | 2–10 yr or to 65 | 50–70% of income | Portable; non-taxable benefits |
| Social Security DI | After 5 months | To retirement age | ~40% avg income | Strict definition; hard to qualify |
"Own occupation" vs "any occupation" definitions
The disability definition in a policy determines when you can claim. "Own occupation" (most favourable) pays if you cannot perform your specific job — a surgeon who loses hand function collects even while working in another capacity. "Any occupation" only pays if you cannot work in any job for which you are reasonably qualified. "Modified own occupation" is a common middle ground. Professionals should seek own-occupation coverage.
Worked examples
$6,000/month gross income
Inputs: 65% × $6,000
Result: ≈ $3,900/month benefit target
Gap vs employer LTD (60%, taxable)
Inputs: $3,600 gross benefit ≈ $2,700 after tax
Result: ≈ $1,200/mo short of $3,900 target
Longer elimination period lowers premium
Inputs: 90-day vs 30-day waiting period
Result: Premium drops; you self-fund the first 90 days
Glossary
- Own occupation
- Disability definition covering inability to perform your specific career role.
- Elimination period
- The waiting period before benefits begin; similar to a deductible in time.
- Benefit period
- How long disability benefits are paid after the elimination period.
- SSDI
- Social Security Disability Insurance — federal program for total, long-term disability.
Related reading
Frequently Asked Questions
Why use Disability / Income Protection Calculator?
- Applies the 60–70% income-replacement standard to show your actual monthly shortfall if you become disabled
- Nets out existing employer STD and LTD benefits so you only need to shop for the true coverage gap
- Compares benefit periods — 2 years, 5 years, to age 65 — to show long-term financial exposure
- Accounts for the tax difference between employer-paid and individually purchased LTD benefit amounts
Common use cases
- Determine whether a self-employed consultant's LTD policy fully covers essential monthly expenses
- Calculate the monthly income gap a nurse would face if injury limited her to light-duty work only
- Assess disability coverage needs when transitioning from an employer group plan to individual coverage
- Estimate benefit shortfall for a sole breadwinner whose illness would leave the household without income
- Compare own-occupation and any-occupation benefit scenarios for a high-earning specialist
Get weekly tool tips & updates
New tools, power-user tips, and productivity hacks — delivered free every Friday.
No spam, ever. Unsubscribe with one click.
Related Insurance
Child Support Calculator
Estimate monthly child support payments using the Income Shares model. Enter parent incomes, custody split, and children count. Free child support estimator.
Term Life (DIME) Calculator
Calculate how much life insurance you need using the DIME method. Enter your debt, income, mortgage, and education costs to find the right coverage amount.
Loan Calculator
Calculate your loan monthly payment, total interest, and payoff. Compare rates and terms instantly with this free online personal loan calculator.
Health Insurance Cost Estimator
Estimate your health insurance monthly premium and annual out-of-pocket costs. Compare plan tiers (Bronze/Silver/Gold/Platinum) to find the best value
Life Insurance Calculator
Calculate how much life insurance coverage you need using the DIME method. Accounts for income, mortgage, debts, and children's education.
Personal Injury Settlement Estimator
Estimate your personal injury settlement value. Enter medical bills, lost wages, pain and suffering multiplier, and liability percentage for a settlement range.
Explore all Insurance.