What a CP91 is
A CP91 is a notice of intent to levy Social Security benefits. The IRS's own wording: "We intend to levy up to 15% of your Social Security benefits for unpaid taxes." The notice itself puts it more concretely: "We will seize (levy) up to 15% of the Social Security benefits you receive in order to pay your unpaid federal taxes until they are paid in full."
The mechanism is a continuing levy under section 6331(h) of the tax code, which provides that such a levy "shall attach to up to 15 percent of any specified payment due to the taxpayer." Social Security benefits are one of the payment types that provision covers.
Two words in that sentence do a lot of work. Continuing means it does not stop after one payment — it attaches to each one until released or until the balance is paid. Up to means 15% is a ceiling rather than a fixed amount.
What this notice does not do
It does not stop your benefit. A capped continuing levy is a deduction, not a suspension.
It does not give you Form 12153. This is the part most likely to matter and it is easy to miss. Neither the IRS's CP91 page nor the notice itself refers to a Collection Due Process hearing or offers the form for requesting one, and CP91 does not appear on the Taxpayer Advocate Service's list of notices that carry Collection Due Process rights.
That is not the same as having no right to a hearing, and nobody should read it that way. The law requires written notice of a hearing right before a levy of this kind, which means if one has been given it arrived on a different letter — a Final Notice: an LT11, a Letter 1058 or a CP90.
Here is the part that changes what you should do. A CP91 is an additional final notice, and in the way this program is sequenced it normally issues only after that Final Notice has already been on the account for some weeks. So by the time a CP91 arrives, the 30-day window to request a Collection Due Process hearing has usually closed. Looking for it is not the best use of your time.
What is generally still open is the smaller door. An equivalent hearing can be requested for one year from the date of the Final Notice — the same form, and it gets you a conversation with the Independent Office of Appeals. It is a lesser remedy and the three ways it is lesser have to be said together: levy is not prohibited during it, the ten-year collection period is not suspended, and Publication 1660 is explicit that "You cannot go to court if you disagree with Appeals' decision."
There is also the Collection Appeals Program, which is quicker and looks at a wider range of collection decisions, and which is worth asking the IRS about on the number on your notice.
Which of those is available depends on dates that are on your account and not on this letter — specifically, the date of whichever Final Notice came before this one.
Sources: IRS, "Understanding your CP91 notice"; IRS Notice CP91; 26 U.S.C. § 6331(h); Taxpayer Advocate Service. Reviewed 27 August 2026.
If reading a transcript is not something you want to take on: we will do it with you on the free call. (800) 236-3741, or Book thirty minutes →.
What to do
1. Do not call Social Security about it. The Social Security Administration cannot stop the levy or resolve the tax issue, and the IRS's own guidance says so. The number to call is on the notice.
2. Work out whether this is a hardship case, because that is the question the IRS can actually act on. Currently not collectible status is a formal recognition that collection would prevent you meeting basic living expenses. It is not available to everyone and it does not erase the debt — but it is decided on your actual income, expenses and assets rather than on how the situation feels, and a fixed benefit income is exactly the fact pattern it exists for. What currently not collectible status actually is →
3. Pull the transcript and find the date of the Final Notice that came before this one. Free, and you can request it yourself. That date is what an equivalent-hearing request is measured from, and it is the only date that decides whether the smaller door is still open. Reading the transcript is the harder part; the account is written in three-digit transaction codes and the dates on them are not the dates you would assume. How to pull IRS transcripts without calling →
4. Check whether the balance is even right. Benefit-age taxpayers get here disproportionately often through an old year that was never resolved, a return the IRS prepared on their behalf, or a payment applied to the wrong period.
5. If the balance is genuinely old, ask how old. The IRS generally has ten years from assessment to collect, and each year carries its own clock. That is a question with a real answer on the account, and it is one of the few places where doing nothing has ever been the right advice — which is precisely why it should be checked rather than assumed.

