What a per diem disability attorney is
A per diem disability attorney is a lawyer who charges by the day rather than taking a percentage of your back pay. Instead of waiting until your case ends to pay them, you pay a set daily rate for each day they work on your SSDI or SSI case. This is different from the more common arrangement, where a disability lawyer takes 25 percent of any back pay you receive (up to a legal maximum of $6,000).
Per diem arrangements are less common than contingency fees, but they exist because some people prefer knowing their costs upfront rather than losing a chunk of their award at the end. The trade-off is that you pay as you go, whether you win or lose.
This fee structure is legal under Social Security rules, but it comes with real constraints on what the attorney can charge and how the arrangement works. Understanding those constraints matters before you agree to one.
Key Takeaways
- Per diem attorneys charge a set daily rate instead of a percentage of back pay, so you know the cost before the case ends.
- Social Security limits what per diem attorneys can charge, and the total fee cannot exceed what they would have earned under a contingency arrangement.
- You pay per diem fees out of pocket as the work happens, not from your back pay award.
- Per diem arrangements work best if you have money available now and want to avoid losing a large percentage of your award later.
- Most disability lawyers use contingency fees instead, so finding a per diem attorney may require calling multiple offices.
How per diem fees are limited by Social Security
The Social Security Administration does not set a specific daily rate that per diem attorneys must charge. Instead, it sets a ceiling: the total fee the attorney collects cannot exceed what they would have earned under a standard contingency arrangement (25 percent of back pay, capped at $6,000).
This means if your case wins and you receive $20,000 in back pay, the attorney's total fee—whether charged daily or as a percentage—cannot go above $5,000. If you paid $200 per day for 30 days of work, that is $6,000, which exceeds the limit. The attorney would have to refund the overage or adjust the rate downward.
The attorney must also get written approval from Social Security before charging per diem fees. This approval comes through a fee agreement form filed with the Appeals Council or the court handling your case. Without that approval, the fee arrangement is not valid.
When you pay and what happens if you lose
With a per diem arrangement, you pay the attorney's bill as work progresses—typically monthly or at the end of each hearing or filing. You do not wait for a decision. This means if your case is denied, you have already paid the attorney's fees out of your own money. There is no refund mechanism tied to the case outcome.
This is the biggest risk of per diem arrangements. A contingency attorney only gets paid if you win. A per diem attorney gets paid regardless. If you cannot afford to lose that money, per diem is not the right choice for you.
If you do win, the attorney's total fee still cannot exceed the Social Security cap. Any amount you paid above that cap should be refunded to you, though you may need to request it or have your attorney calculate it at the end of the case.
Comparing per diem to contingency fees
A contingency fee attorney takes a percentage of your back pay award—usually 25 percent, capped at $6,000 by Social Security. You pay nothing upfront and nothing if you lose. The attorney absorbs the cost of your case and only profits if you win.
A per diem attorney charges a daily rate and you pay as you go. You know the cost per day but not the total cost until the case ends. You pay whether you win or lose.
For most people, contingency is simpler: no out-of-pocket cost, no risk if you lose, and the attorney is motivated to win because they only get paid if you do. Per diem works if you have cash available now and want to avoid giving up a large percentage of your award later. It also works if you believe your case is strong and unlikely to drag on for years, keeping daily costs low.
How to find a per diem disability attorney
Most disability lawyers advertise contingency fees because that is what most clients want. Finding a per diem attorney requires direct contact. Call disability law offices in your area and ask whether they offer per diem arrangements. Many will say no. Others may say yes but only under certain conditions—for example, only if the case is expected to be straightforward or only if you are already at the hearing stage.
When you find an attorney willing to discuss per diem, ask for their daily rate in writing. Ask how they estimate the total number of days your case will take. Ask what happens if the case takes longer than expected. Ask whether the rate changes if the case goes to federal court (which is more complex and time-consuming than the Appeals Council).
Before you commit, compare the estimated total cost to what you would pay under a contingency arrangement. If your back pay is likely to be $15,000, a 25 percent contingency fee is $3,750. If a per diem attorney charges $300 per day and estimates 20 days of work, that is $6,000—more than the contingency route, and you pay it upfront.
What to ask before agreeing to per diem fees
Get the fee agreement in writing before any work begins. The agreement should state the daily rate, what counts as a billable day, whether partial days are charged at full rate or prorated, and whether the attorney will seek Social Security approval of the fee arrangement.
Ask whether the rate covers all work or whether certain tasks (like filing motions or attending hearings) cost extra. Ask whether you will receive an itemized bill showing which days were worked and what was done. Ask how often you will be billed and whether you can request an estimate of remaining costs at any point.
Ask what happens if Social Security denies the fee arrangement. Some attorneys will refund your fees if the arrangement is not approved. Others will not. This matters because without approval, the fee structure may not be enforceable.
Ask whether the attorney will still represent you if you run out of money to pay the daily fees. Some will continue; others will withdraw from the case. Knowing this upfront prevents a surprise later.
Frequently Asked Questions
Can a per diem attorney charge more than a contingency attorney?
No. Social Security caps the total fee at what a contingency attorney would earn—25 percent of back pay, with a maximum of $6,000. If your per diem fees exceed that amount, the attorney must refund the overage. However, per diem fees can reach that cap faster than contingency fees if your case is short and the daily rate is high.
What if I cannot afford to pay per diem fees while my case is pending?
Per diem is not a good fit if you do not have money available now. Contingency fees are better because you pay nothing until you win. If you are in financial hardship, tell the attorney upfront and ask whether they offer contingency arrangements instead.
Do I get a refund if my case is denied?
No. Per diem fees are earned when the work is done, not when the case is won. If you lose, the attorney keeps the fees you paid. This is why per diem carries more risk than contingency arrangements.
Can an attorney switch from per diem to contingency partway through my case?
Yes, if both you and the attorney agree in writing and Social Security approves the new arrangement. This might happen if your case becomes more complex than expected and the per diem costs are climbing higher than a contingency fee would be.
What if the attorney's estimate of days needed is wrong?
You are responsible for paying for all days worked, even if the estimate was too low. This is why it is important to ask how the attorney will handle cost overruns and to request updated estimates as the case progresses.