Direct answer
When do SSDI payments start?
SSDI payments start with the sixth full month after the SSA-established disability onset date, because federal law imposes a 5-month waiting period; back pay covers the months between onset (plus the waiting period) and approval.
Once you are approved, the SSA issues back pay in a lump sum and begins regular monthly payments on a schedule based on your birth date.
Sourced from ssa.gov — see citations below.
When does the first check arrive?
The first monthly check is for the sixth full month after your established onset date.
What about back pay?
Any months of entitlement before approval are paid as a lump-sum back-pay award.
When is the monthly payment date?
The SSA pays on the 2nd, 3rd, or 4th Wednesday of the month based on the recipient's birth date.
Topics
Sources
Every figure and rule on this page is drawn from official SSA publications. Verify at the links below.
- SSA — Apply for Disability Benefits (ssa.gov)