Disability Back Pay Calculator
Calculate the retroactive disability benefits (back pay) you may be owed from the date of disability onset to the date of approval.
Results
Visualization
How It Works
SSDI back pay covers the period from your disability onset date to the date your claim is approved, minus a mandatory 5-month elimination period. If you used an attorney, their fee (up to 25%, capped at $7,200) is deducted from the lump sum.
The Formula
Net Back Pay = (Monthly Benefit x Payable Months) - Attorney Fee
Variables
- Payable Months — Months from onset to approval, minus the 5-month elimination period
- Attorney Fee — Lesser of 25% of back pay or $7,200 federal cap
- Elimination Period — Mandatory 5-month waiting period before benefits begin
Example
With $2,000/month benefit and 18-month wait: Payable months = 13, Gross back pay = $26,000, Attorney fee = min($6,500, $7,200) = $6,500, Net back pay = $19,500.
Tips
- Keep records of your disability onset date with medical documentation.
- Back pay may be paid in installments for large amounts (SSI, not SSDI).
- Attorney fees for SSDI are strictly regulated -- never pay more than 25% or $7,200.
- You may also qualify for SSI back pay in addition to SSDI.
- Back pay is generally not taxable if it makes up less than the standard deduction.