Estimate your Social Security Disability Insurance (SSDI) monthly benefit based on your average indexed monthly earnings and work credits.
Social Security Disability Insurance (SSDI) provides monthly income to individuals who can no longer work due to a qualifying disability. Your benefit amount depends on your Average Indexed Monthly Earnings (AIME) — essentially your career earnings adjusted for wage inflation — run through a progressive formula that replaces a higher percentage of income for lower earners.
This calculator estimates your Primary Insurance Amount (PIA) using the SSA's bend-point formula. The 2025 bend points are $1,174 and $7,078. The formula replaces 90% of the first bend point, 32% of earnings between the two bend points, and 15% above the second.
This is an educational estimate only. Actual SSDI benefits depend on your complete earnings history. Check ssa.gov for your personalized benefit statement. Whether you are a beginner or experienced professional, this free online tool provides instant, reliable results without manual computation. By automating the calculation, you save time and reduce the risk of costly errors in your planning and decision-making process.
Understanding your potential SSDI benefit helps you plan private disability insurance coverage. Since SSDI benefits are typically modest ($1,500-$2,000/month average), most professionals need supplemental private disability coverage. This calculator shows the gap between SSDI and your actual income needs. Having a precise figure at your fingertips empowers better planning and more confident decisions.
AIME = Total Career Earnings / (Years Worked × 12) PIA = 90% of first $1,174 + 32% of AIME from $1,174 to $7,078 + 15% of AIME above $7,078 2025 Maximum SSDI Benefit: ~$3,822/month Work Credits: Need 40 credits (10 years), with 20 credits in last 10 years (younger workers may need fewer)
Result: $2,384/month estimated SSDI benefit
AIME: $70,000 × 20 years / (20 × 12) = $5,833. PIA: 90% of $1,174 = $1,057 + 32% of ($5,833 − $1,174) = $1,491 + 15% of $0 = $0. Total PIA: $1,057 + $1,491 = $2,547/month. With rounding, the estimated benefit is approximately $2,384/month.
The Social Security Administration uses a progressive benefit formula designed to replace a higher percentage of income for lower earners. The bend-point formula ensures that workers who earned less during their careers receive a proportionally larger replacement rate, while higher earners still receive meaningful benefits up to the maximum.
SSDI has a very strict definition of disability — you must be unable to perform any substantial gainful activity, not just your own occupation. The 5-month waiting period and lengthy approval process (often 1-2 years with appeals) make it unreliable as your only disability protection. Private disability insurance typically has a more favorable "own occupation" definition and shorter elimination periods.
Use your estimated SSDI benefit as a foundation, then build private disability coverage on top. Most financial advisors recommend total disability income replacement of 60-70% of gross income. Subtract your estimated SSDI benefit from that target to determine how much private coverage you need.
Average Indexed Monthly Earnings (AIME) is your career earnings adjusted for wage inflation, then averaged over your highest-earning 35 years and divided by 12 to get a monthly figure. It's the basis for calculating your SSDI benefit.
The 2025 bend points are $1,174 and $7,078. The formula replaces 90% of AIME up to $1,174, 32% of AIME between $1,174 and $7,078, and 15% of AIME above $7,078. These bend points are adjusted annually for wage inflation.
Initial SSDI applications take 3-6 months on average, and about 65% are initially denied. Appeals can take 1-2 years. Many applicants need to appeal through a hearing before an Administrative Law Judge. Having a disability attorney can significantly improve approval odds.
SSDI has a Trial Work Period (9 months in a rolling 60-month period) where you can earn any amount. After that, earning above the Substantial Gainful Activity (SGA) limit ($1,550/month in 2025 for non-blind individuals) may cause benefits to stop.
No. SSDI is based on your work history and earnings (you paid into Social Security). SSI (Supplemental Security Income) is a needs-based program with much lower benefits ($943/month maximum in 2025) for disabled individuals with limited income and resources.
SSDI requires that you cannot perform substantial gainful activity due to a medical condition expected to last at least 12 months or result in death. The SSA uses a 5-step evaluation process. Unlike private disability insurance, there is no "own occupation" definition — the SSA considers any work you could do.
Many private policies have a "social insurance offset" that reduces your private benefit by the amount you receive from SSDI. Check your policy for offset provisions. Some policies are "true own-occupation" and pay regardless of SSDI benefits.