What a Discrepancy Letter Does and When You Need One

A discrepancy letter is a written statement you send to Social Security explaining why you believe their overpayment calculation is wrong. It is not a request for forgiveness or a legal appeal—it is a factual challenge to the math or the facts they used to determine you owe money back.

You need one when Social Security sends you a notice saying you were overpaid (usually on a form called a SSA-632 or SSA-632-BK, the "Notice of Overpayment") and you disagree with either the amount they say you owe or the reason they say you were overpaid. Common reasons to write one include: they counted income you reported, they did not account for a work incentive you used, they made an arithmetic error, or they did not credit a month when you should have been ineligible.

The letter goes into your case file and becomes part of the record if you later request a hearing before an administrative law judge. It does not stop collection, but it creates a documented reason why you think the overpayment notice is incorrect.

Key Takeaways

  • A discrepancy letter challenges Social Security's overpayment calculation by presenting facts or math errors, not by asking for mercy or a waiver.
  • Send it to the Social Security office that issued the overpayment notice within 10 days if you want it considered before they start collection, though you can send it later.
  • Include the notice number, the specific months in dispute, the income or circumstance they miscounted, and what the correct amount should be.
  • Keep a copy and send it certified mail so you have proof it arrived; Social Security loses mail regularly.
  • If Social Security does not change the amount after your letter, you can request a hearing before an administrative law judge, where the letter becomes evidence.

Before You Write: Gather the Documents That Prove Your Point

Do not write the letter until you have the evidence in front of you. Pull together: the overpayment notice itself (read it line by line for the month range and the reason given), your own records of income for those months (pay stubs, self-employment records, bank statements), any work incentive forms you submitted (Plan to Achieve Self-Support forms, Impairment Related Work Expenses worksheets), and any correspondence with Social Security about the income in question.

If the overpayment is based on work income, check whether you reported it on a SSA-777 (Work Activity Report) or a SSA-777-F3 (Work Activity Report—Self-Employment). If you did, that document is your proof that you disclosed the income. If the overpayment is based on a benefit you received from another source (a pension, unemployment, workers' compensation), pull the award letter or payment stub from that program.

The goal is to have every fact you mention in the letter backed up by a document you can send along with it. Social Security will not take your word for it; they will only change the decision if you show them something in writing that contradicts what is in their file.

The Structure and Content of the Letter

Keep the letter short and organized. Use a standard business letter format: your name and address at the top, the date, the Social Security office address, and a clear subject line. Address it to the "Social Security Administration" or the specific field office if you know which one handles your case (the overpayment notice will say).

Open with a single sentence stating what you are writing about: "I received an overpayment notice dated [date] saying I owe $[amount] for the months of [month/year] through [month/year]. I believe this calculation is incorrect for the following reasons:" Then list each reason separately, with the month or months it applies to, the fact or figure Social Security used, and what the correct fact or figure should be.

For example: "For June 2023, Social Security counted $1,200 in self-employment income. I reported this income on my SSA-777-F3 dated June 15, 2023, and claimed $400 in Impairment Related Work Expenses (IRWE) for transportation. The countable income should be $800, not $1,200. I am enclosing a copy of the IRWE worksheet I submitted." Or: "For August 2023, Social Security says I received a pension payment of $600. I did not receive any pension payment that month. My pension began in September 2023. I am enclosing a copy of my pension award letter showing the start date."

Close with a request for action: "Please review this letter and the enclosed documents and recalculate the overpayment. If you need additional information, please contact me at [phone number]." Sign it by hand if you are mailing it, or type your name if you are sending it by email or through your Social Security online account.

What to Include and What to Leave Out

Include: the overpayment notice number or date, the specific months in dispute, the dollar amounts Social Security used and the dollar amounts you believe are correct, the documents that prove your point, and your contact information. Be factual and unemotional. Do not argue that you deserve a break or that the overpayment is unfair; Social Security does not care. Do not ask for a waiver of the overpayment; that is a separate process and a discrepancy letter is not the place for it.

Leave out: complaints about Social Security's service, stories about hardship, requests for leniency, or arguments about whether the rule itself is fair. These things do not change the math. If you later want to ask for a waiver (which is possible if you were not at fault for the overpayment and repaying it would cause financial hardship), that is a different letter to a different office, and your discrepancy letter should not mix the two.

Where to Send It and How to Track It

Send the letter to the Social Security field office listed on the overpayment notice. If no office is listed, send it to the address on the notice itself. Do not send it to the national toll-free number or the online message center; those do not route to the right place for overpayment disputes.

Use certified mail with return receipt so you have proof of delivery. Write "Discrepancy Letter—Overpayment Notice [date]" on the envelope. Keep a copy for yourself. If you have a my Social Security account, you can also upload the letter and documents there, but do this in addition to mailing it, not instead of it, because the online system does not always route documents to the right team.

Social Security is supposed to respond within 30 days, but they often take longer. If you do not hear back within 60 days, call the field office and ask whether they received it and what stage the review is in. Have your case number ready.

What Happens After You Send It

Social Security will review your letter and the documents you sent. They may recalculate the overpayment and send you a new notice with a lower amount, or they may send you a letter saying they reviewed it and the original amount stands. If they change the amount, the new notice will explain what they changed and why. If they do not change it, you have the right to request a hearing.

A hearing is a meeting with an administrative law judge (not a Social Security employee) where you can present your evidence and argue your case. You request a hearing by filing a form called an SSA-501 (Request for Hearing by Administrative Law Judge) within 60 days of the notice saying they upheld the overpayment. Your discrepancy letter becomes part of the hearing record, so make sure it is clear and well-documented.

While you wait for a response or a hearing, Social Security may begin collecting the overpayment by reducing your monthly benefit check. You can ask them to stop collection while the dispute is pending, but they do not have to grant this unless you show that repaying it would cause severe financial hardship. A discrepancy letter does not stop collection on its own.

Common Mistakes to Avoid

Do not assume Social Security has your records. Even if you reported income on a form, they may have lost it, misfiled it, or entered it wrong into their system. Assume nothing and prove everything with documents you send along with the letter.

Do not write the letter in anger or use language that sounds like you are accusing Social Security of fraud. Stick to facts. "Social Security counted income I did not report" is a factual statement. "Social Security is stealing from me" is not and will not help your case.

Do not miss the 10-day window if you want the letter considered before collection starts. Social Security is supposed to hold off on collection for 10 days after sending the overpayment notice if you request reconsideration in writing. After 10 days, they can start collecting even while your letter is being reviewed. Send it as soon as you receive the notice.

Do not send the original of any document you need to keep. Make copies and send those. Social Security does not always return documents, and you may need the originals later for a hearing or for another purpose.

Frequently Asked Questions

Can I call Social Security instead of writing a letter?

You can call to ask questions about the overpayment, but a phone call does not create a written record. If you later request a hearing, the judge will want to see a written statement of your position. Write the letter so there is proof of what you said and when you said it.

What if I do not have all the documents Social Security is asking for?

Send what you have and explain what you do not have. For example: "I no longer have my pay stubs from June 2023, but I am enclosing my bank deposits from that month showing the income I received." Then ask Social Security to contact your employer directly for the pay stubs. They can do this if you give them permission.

Does writing a discrepancy letter stop Social Security from taking money out of my check?

No. Social Security can continue collecting the overpayment while your letter is being reviewed. If you cannot afford the collection, you can ask them to reduce the monthly collection amount, but that is a separate request. A discrepancy letter challenges whether you owe the money; a hardship request asks them to collect it more slowly.

What if Social Security says I owe an overpayment but I never received the money?

This sometimes happens when a benefit was paid to a representative payee (someone managing your money on your behalf) or when it was deposited to an account you no longer use. Write the letter explaining that you never received the payment and ask Social Security to investigate where it went. Include any bank statements showing the deposit did not reach your account.

Can I ask for a waiver in the same letter as my discrepancy?

No. A discrepancy letter says the overpayment calculation is wrong. A waiver request says you owe the money but should not have to repay it because you were not at fault and repaying would cause hardship. These are two separate processes with two separate forms. Write the discrepancy letter first. If Social Security upholds the overpayment after reviewing it, then file a waiver request using form SSA-632-BK.