Disability Insurance Needs Calculator
Reviewed by Hamza Gujjar, Algorithm Architect & Software Developer
Last updated: July 27, 2026Disability Insurance Needs Calculator
How much monthly disability benefit would you actually need if you couldn't work? This gap analysis compares your essential expenses against other income sources you'd still have available.
Monthly Benefit Needed = Monthly Essential Expenses - Other Available Monthly Income
Example
$4,000 monthly essential expenses, $1,000 other available monthly income:
Monthly Benefit Needed = 4,000 - 1,000 = $3,000/month ($36,000/year)
An Important Caveat About Real Policies
Most disability insurance policies only replace 60-70% of pre-disability income by design - this intentional gap is meant to preserve some financial incentive to return to work when medically able, rather than a coverage limitation to be worked around. This means the benefit figure calculated here should be interpreted alongside your specific policy's actual benefit percentage, not treated as a literal dollar-for-dollar coverage target.
What Counts as "Other Income"
This might include a working spouse's income, planned savings drawdown, Social Security disability benefits (if eligible), or existing short-term disability coverage through an employer - accurately identifying these other sources is what makes this gap calculation meaningful rather than just estimating gross replacement of your full current income.