How SSDI back pay works
SSDI has a waiting period of five full calendar months from the date Social Security decides your disability began. No benefits are paid for those months.
Benefits can also be paid for up to 12 months before the month you applied, as long as you were disabled (and past the waiting period) during those months. Together, that's why it matters when your disability is found to have started.
Back pay covers the months from when your benefits should have started until you're approved. It's usually paid in a lump sum.
How SSI back pay works
SSI doesn't pay for any months before you applied. SSI back pay starts from the month after you applied. Large SSI back payments may be paid in installments.
What comes out for lawyer fees
If you have an attorney under a standard fee agreement, the fee is generally 25% of your past-due benefits, capped at $9,200 (the cap since November 30, 2024). Social Security usually pays the attorney directly from your back pay. If you don't win, there's generally no fee.
Applied and stuck, or denied? See if you may qualify for a free case review →
Frequently asked questions
How long until I get my back pay?
It often arrives within a few months of approval, but it varies.
Is disability back pay taxable?
It can be, depending on your total income. Social Security sends a statement each year showing the benefits you received.
Does the waiting period apply to SSI?
No, the 5-month waiting period is for SSDI. But SSI doesn't pay for months before you applied.
Sources
- SSA, Fee Agreements: www.ssa.gov/representation/fee_agreements.htm
- SSA, Supplemental Security Income (SSI): www.ssa.gov/ssi
This guide is general information, not legal advice. Disability Drew is not affiliated with the Social Security Administration.