If you’re applying for Social Security Disability Insurance (SSDI) or appealing a denial, missing a key deadline could mean losing access to the benefits you need. From initial claims to appeals and medical evidence, here’s what every applicant needs to know about critical Social Security deadlines in 2025.
The 60-day appeal rule
If your SSDI claim is denied, you have just 60 days from the date you receive the denial notice to file an appeal. The Social Security Administration (SSA) adds 5 days for mail time, but any appeal received after that total 65-day window may be rejected unless you prove a valid reason for delay.
Missed the deadline? You’ll need to provide written justification to request a late appeal—and approval is rare.
Understanding your “alleged onset date”
The alleged onset date (AOD) is the date you became unable to work due to disability. This date directly affects how much back pay you can receive. However, the SSA requires a 5-month waiting period after your AOD before benefits can start.
- To receive the full 12 months of back pay, your AOD must be at least 17 months before your application date.
- The SSA may revise your AOD if evidence suggests a different timeline.
Medical evidence: The 5-day rule
For hearings, any medical evidence or documentation must be submitted at least 5 days before your scheduled court date. This includes:
- Doctor’s reports
- Test results
- Employer statements
Failing to submit these in time may result in evidence being excluded.
How long does approval take?
Applicants often ask how long it takes from submission to approval. Here’s what to expect:
- 1 to 6 months: If approved on the initial application
- Several months to years: If your case goes to appeal or hearing
Common deadlines to remember
- Initial Application Window: You can apply as soon as you become eligible, but waiting too long could impact retroactive pay.
- Medicare Sign-Up: Even if you’re not ready to retire, sign up for Medicare 3 months before your 65th birthday.
- Work & Earnings Reporting: If you’re under full retirement age and working while receiving benefits, report changes in earnings promptly to avoid penalties.
Why legal help matters
The SSDI process is legally complex and deadline-driven. Missing a requirement or submitting the wrong evidence can delay or derail your claim. That’s why many choose to work with disability law firms for guidance.
What happens next?
Deadlines can define the outcome of your Social Security claim. If you’re preparing to apply or recently received a denial, acting quickly can preserve your benefits. Contact a legal professional to help you stay on track.