The core requirements for SSDI haven't changed, but here's what matters right now

To receive Social Security Disability Insurance (SSDI) in 2025, you must meet three basic requirements: you need enough work credits from paying Social Security taxes, you must have a medical condition that meets Social Security's definition of disability, and your condition must be expected to last at least 12 months or result in death. The work credits you've already earned don't expire, so if you worked in the past, those credits stay on your record. What changes year to year is the dollar amount you need to earn to get one work credit—in 2025, you earn one credit for every $1,550 of wages, up from $1,470 in 2024.

The medical part is where most people focus, but it's also where the process takes the longest. Social Security doesn't straightforward accept your doctor's word that you can't work. They send your medical records to a state agency called Disability information Services (DDS), where a doctor and a vocational informed review everything to decide whether your condition prevents you from doing any kind of work—not just your old job, but any job that exists in the economy.

Key Takeaways

  • You need 40 work credits total, with at least 20 earned in the 10 years before you became disabled, though younger workers need fewer credits.
  • In 2025, you earn one work credit for every $1,550 of wages you pay Social Security taxes on, and you can earn a maximum of four credits per year.
  • Your medical condition must prevent you from working for at least 12 months or be expected to result in death—temporary or part-time work disqualifies you.
  • Social Security uses its own medical standards, not your doctor's opinion alone, so your condition must match one of their listed impairments or be equally severe.
  • The process typically takes three to six months for an initial decision, though many people are denied on the first try and must request reconsideration or a hearing.

How work credits work and why the 2025 earnings amount matters

A work credit is straightforward a measure of how much you've paid into Social Security. You earn one credit for every $1,550 you earn in wages subject to Social Security tax in 2025—that's the amount that goes up each year with inflation. You can earn a maximum of four credits per year, which means you need to earn at least $6,200 in 2025 to max out your credits for the year. If you earned $775, you'd get one credit; if you earned $3,100, you'd get two.

Most people need 40 work credits total to be insured for SSDI, with at least 20 of those credits earned in the 10 years when ready before you became disabled. This is called the "recent work requirement." If you became disabled at age 35, you'd need 26 credits total with 13 earned in the past 10 years. If you became disabled at age 24, you'd need only 12 credits with six earned in the past three years. The younger you are when you become disabled, the fewer credits you need—Social Security assumes you haven't had as much time to work.

The 2025 earnings threshold ($1,550 per credit) is slightly higher than 2024 ($1,470), which means you need to earn a bit more to reach each credit. If you're self-employed, the same rule applies, but you report your net earnings from self-employment on your tax return, and Social Security uses that figure to calculate your credits.

Medical requirements: what "disabled" means to Social Security

Social Security has a specific definition of disability that is stricter than most people expect. You must have a medical condition that prevents you from doing "substantial gainful activity"—in 2025, that means earning more than $1,550 per month. If you can work and earn that amount, you don't meet the medical requirement, even if your condition is severe. This is why people sometimes say SSDI is about inability to work, not inability to do your old job.

Social Security maintains a list called the Blue Book of impairments that automatically may have access to if your condition matches and meets the severity requirements. The list includes conditions like advanced cancer, severe arthritis, blindness, heart failure, and many others. If your condition is on the list and your medical records show it meets the criteria, the process moves faster. If your condition isn't on the list, Social Security must decide whether it's "medically equivalent"—meaning it's as severe as something on the list.

Your own doctor's opinion matters, but it's not the deciding factor. Social Security sends your medical records to Disability information Services, where a state doctor reviews them. That doctor may order additional tests or ask your doctor for more information. They're looking for objective evidence—test results, imaging, exam findings—not just your report of pain or fatigue. If the evidence doesn't support that you can't work, the claim is denied.

The 12-month duration requirement and what it means for your condition

Your condition must be expected to last at least 12 months or result in death. This rules out temporary injuries, short-term illnesses, and conditions expected to improve. If you have a broken leg that will heal in three months, you don't meet this requirement. If you have a condition that comes and goes—like some mental health conditions or migraines—Social Security looks at whether it prevents you from working consistently over a 12-month period, not whether you have good days and bad days.

The 12-month clock starts when your condition began, not when you explore. If you became disabled in January 2024 and explore in December 2024, Social Security will wait until January 2025 to make a decision, because they need to see that your condition has lasted or is expected to last the full 12 months. In some cases, if the evidence clearly shows your condition will last longer than 12 months, they don't wait—but this is the exception, not the rule.

If your condition improves enough that you can work and earn more than $1,550 per month, your benefits stop. Social Security calls this a "medical improvement." If you return to work, you have a trial work period where you can earn any amount for nine months without losing benefits, but after that, your benefits end if your earnings stay above the limit.

Age-related differences in how requirements are applied

The work credit requirement changes based on your age when you become disabled. If you're 31 or older, you need 40 credits with 20 earned in the past 10 years. If you're between 24 and 30, you need 20 credits with half earned in the past three years. If you're 22 or 23, you need only 12 credits with six earned in the past three years. If you became disabled before age 22, you need only six credits earned in the three years before disability began.

The medical requirement is the same at any age—your condition must prevent substantial gainful activity—but Social Security recognizes that younger workers have had less time to build a work history. This is why a 20-year-old with limited work experience can still may have access to for SSDI if they meet the medical requirement and have just six work credits.

What happens after you meet the requirements: the decision process

Once you submit your process, Social Security sends it to your state's Disability information Services office. DDS obtains your medical records from your doctors and hospitals, and a medical consultant (a doctor or psychologist) reviews them. If your condition is straightforward and clearly meets the requirements, you may get an approval within three months. Most cases take longer—typically three to six months for an initial decision.

If DDS denies your claim, you have the right to request reconsideration, which sends your case to a different examiner at DDS. If reconsideration is also denied, you can request a hearing before an Administrative Law Judge (ALJ). At a hearing, you can present new evidence and testify about how your condition affects your ability to work. Many people who are denied initially are approved at the hearing stage, which is why the hearing request is an important step.

Throughout this process, Social Security is checking your work credits against their records. If there's a discrepancy—if you believe you earned credits in a year that Social Security doesn't show—you can request a wage adjustment by providing tax returns or W-2 forms. This must be done within three years, three months, and 15 days of the year in which you earned the wages.

Changes that might affect your SSDI in 2025

The earnings threshold for substantial gainful activity increased to $1,550 per month in 2025, which affects both the medical requirement and the trial work period. If you're currently receiving SSDI and working, your benefits will continue as long as you earn less than $1,550 per month during the trial work period. After the trial work period ends, any month you earn $1,550 or more counts as a month of work, and your benefits stop.

The work credit earnings amount ($1,550 per credit) also increased, which means if you're still working and building credits, you need to earn slightly more to earn each credit. This doesn't affect people already receiving SSDI, but it matters if you're working while waiting for a decision or if you're considering returning to work.

Social Security's Blue Book is reviewed periodically, and new conditions are sometimes added or criteria are updated. In 2025, the requirements themselves haven't changed, but it's worth checking the Blue Book on Social Security's website if your condition is newly diagnosed or if you're preparing to explore.

Frequently Asked Questions

Do I lose my work credits if I don't work for several years?

No. Work credits never expire once you've earned them. If you worked for 10 years and earned 40 credits, those credits stay on your record even if you haven't worked in 20 years. The recent work requirement (20 credits in the past 10 years) is separate—you need both the total credits and the recent credits to meet the work requirement.

Can I get SSDI if I'm still working part-time?

Not while you're working. If you earn more than $1,550 per month, you don't meet the medical requirement, because Social Security defines disability as inability to do substantial gainful activity. You can work and earn less than $1,550 per month during a trial work period after you're approved, but you can't be approved while working above that threshold.

What if my doctor says I'm disabled but Social Security denies me?

Social Security uses its own medical standards, not your doctor's opinion alone. If they deny you, you can request reconsideration or a hearing. At a hearing, you can present additional medical evidence and have your doctor testify if possible. Many denials are overturned at the hearing stage, especially if you have new or more detailed medical records.

How do I know if my condition is on the Blue Book?

You can search the Blue Book on Social Security's website (ssa.gov). It lists impairments by body system—musculoskeletal, cardiovascular, respiratory, and so on. If your condition matches, read the specific criteria to see whether your medical records meet all the requirements, because matching the diagnosis alone isn't enough.

Can I explore for SSDI before the 12 months have passed?

Yes, you can explore anytime. But Social Security won't make a decision until 12 months have passed since your condition began, unless the evidence clearly shows your condition will last longer than 12 months or will result in death. explore early doesn't hurt—your process date becomes your "onset date" for benefit purposes if you're approved.