SSDI Calculator

This calculator estimates your Social Security Disability Insurance (SSDI) backpay based on your application date, disability onset date, and monthly SSDI benefit amount. It gives a clear picture of how much you might receive in retroactive payments.

Key Takeaways
  • Application Date: The date you officially submitted your SSDI application, typically found on your confirmation letter from the Social Security Administration (SSA).
  • Disability Onset Date: The date SSA determines your disability began, usually noted in your approval letter or medical records.
  • Monthly SSDI Benefit Amount: The amount listed in your SSA award letter or available by logging into your account on the SSA website.

Example Calculations

Sarah

Sarah applied for SSDI on August 1, 2023, after being diagnosed with multiple sclerosis in June 2023. The SSA determined her disability onset date as July 1, 2023. With her monthly SSDI benefit set at $1,500 and the 5-month waiting period starting from July 2023, Maria’s benefits began in December 2023. Now, in March 2024, she’s eligible for 7 months of backpay totaling $6,000.

James

James applied for SSDI on July 1, 2023, after suffering a disabling back injury in May 2023. The SSA determined his disability onset date as June 1, 2023. With his monthly SSDI benefit set at $1,800 and the 5-month waiting period starting from June 2023, his benefits began in November 2023. Now, in March 2024, James is eligible for 5 months of backpay—covering November 2023 through March 2024—totaling $9,000.

Wonder how much you'll get?
View the SSDI Pay Chart for 2025