IRS Collection Due Process hearings: what the 30-day window really buys

As of mid-August 2026, the federal notices we most often see arrive at Oklahoma businesses in a summer stack are the two that carry a hearing right: the IRS's final notice of intent to levy and its notice that a federal tax lien has been filed. Both open a short window for a Collection Due Process hearing, and the window closes whether or not the owner has read the letter.

This is a "what if" walkthrough. What if that notice is on your desk today? What can you do with the hearing, what can't you do with it, and what happens if you're already past the thirty days? We're working from the statute, the Treasury regulation, and the IRS's own publications, and we'll flag where the answer depends on facts a lawyer would need to see.

What a Collection Due Process hearing actually is

A Collection Due Process hearing, usually shortened to CDP, is a hearing before the IRS Independent Office of Appeals that Congress attached to the two most consequential collection steps. Under Internal Revenue Code section 6330, the IRS may not levy on a person's property until it has given written notice of the right to a hearing at least thirty days before the first levy. Under section 6320, once the IRS files a notice of federal tax lien, it must tell the taxpayer within five business days and offer a hearing on that filing.

Whoever hears the case must have had no prior involvement with the unpaid tax, and the hearing is informal. The regulation allows it to be held by correspondence, by telephone, or face to face. In our experience the great majority are handled by phone with a written record, which is why what you put in the request and the follow-up correspondence carries so much weight.

The right is limited to one hearing per tax period for each type of notice. Use it on a period, and a later levy notice for the same period doesn't open a fresh one.

What if the notice says "intent to levy"?

Not every IRS collection letter is a CDP notice. The IRS's own FAQ draws the line: the earlier balance-due notice that precedes the final notice does not carry CDP rights. The notice that does is the final notice, typically labeled a Notice of Intent to Levy and Notice of Your Right to a Hearing, sent by certified mail to the last known address or delivered in person.

From that notice, the taxpayer has thirty days to request a hearing in writing. The regulation counts the thirty days from the day after the date of the notice, not from the day it was opened. The IRS asks for Form 12153, though the regulation recognizes any signed written request that identifies the taxpayer, the tax and periods, and the reasons for disagreement. The request goes to the address on the notice, not to Appeals directly.

While a timely request is pending, the levy that is the subject of the hearing is suspended, and so is the collection statute of limitations. Section 6330 provides that the ten-year period for collection doesn't run during the hearing and any appeal, and in no event expires before the ninetieth day after a final determination. That last clause is the trade the taxpayer makes: the IRS can't levy, but the clock stops too.

What if the notice says a lien has been filed?

The lien side runs a little differently. A federal tax lien under section 6321 arises by operation of law when tax is assessed and unpaid; the filing of a notice of that lien with the county clerk is what makes it public and what triggers section 6320. The IRS must send notice not more than five business days after filing, and the thirty-day request period begins after that five-day period ends.

Two practical differences follow. First, a CDP request on a lien filing doesn't undo the lien; it's already on record with the county and already visible to lenders. What Appeals can consider is withdrawal of the notice, subordination, or discharge, alongside the same collection alternatives available on the levy side. Second, there's no levy to suspend, so the immediate benefit is a forum, not a pause in enforcement.

For an Oklahoma company with a bank line, the filed lien notice is often the first thing the lender's monitoring service catches, and a lender covenant may already be tripped by the time the owner reads the IRS letter. That's the moment we'd want to see both the notice and the loan documents together, because the two problems have to be solved in the same order.

What can be raised, and what can't

Section 6330(c)(2) lists what the hearing is for: appropriate spousal defenses, challenges to the appropriateness of the collection action, and offers of collection alternatives. The IRS's publication spells the alternatives out as installment agreements, offers in compromise, and hardship claims, plus lien withdrawal, subordination, or discharge on the lien side.

Challenging the underlying liability, meaning whether the tax is owed at all or in what amount, is allowed only if the taxpayer did not receive a statutory notice of deficiency and did not otherwise have an opportunity to dispute it. The regulation defines that prior opportunity to include an offered Appeals conference, before or after assessment, even one the taxpayer didn't take. So an owner who ignored an audit report and the thirty-day letter that came with it generally can't relitigate the audit in CDP. An owner facing a trust fund recovery penalty who never got the pre-assessment letter offering an Appeals conference sometimes can.

Section 6330(c)(4) also blocks issues that were raised and considered in a prior administrative or judicial hearing where the person participated meaningfully. One bite at each issue.

The verification and balancing test

The part of section 6330(c)(3) that practitioners lean on is the basis for the determination. Appeals must verify that the requirements of applicable law and administrative procedure were met, consider the issues raised, and weigh whether the proposed collection action balances the need for efficient collection against the legitimate concern that the action be no more intrusive than necessary.

That balancing language is where a well-prepared collection alternative wins. If the owner puts a documented installment proposal or an offer on the table and Appeals rejects it without explaining why a levy is less intrusive than the proposal, the determination is vulnerable on review. If the owner puts nothing on the table, the balancing is easy for the government.

The condition nobody mentions in the letter

Here's the practitioner's wrinkle. The regulation says a face-to-face conference on a collection alternative won't be granted unless other taxpayers would be eligible for that alternative in similar circumstances, and being current on required returns is a standard condition of those alternatives. An owner who requests a hearing to propose an installment agreement while two payroll quarters are unfiled is asking for something Appeals is unlikely to consider. The returns have to go in first, often within the same thirty-day window.

Current compliance works the same way. An operating business proposing to pay old employment tax over time while it isn't making current federal deposits is proposing an alternative Appeals is unlikely to accept. The hearing request and the compliance clean-up are one project, not two.

What if the thirty days have already passed?

The CDP window is short and it isn't extendable, so keep proof of when the request was mailed. Miss it, and there's a second door: the equivalent hearing.

An equivalent hearing is a creature of the regulation, not the statute. It's available when the request is made within one year after the date of the levy notice, or within one year plus five business days after the lien filing. Appeals holds substantially the same hearing and considers the same issues. The differences are the ones that matter most to a business under active collection:

• Levy isn't suspended. The IRS may proceed while the equivalent hearing is pending.
• The collection statute keeps running. The regulation is explicit that the suspension applies only to timely CDP hearings.
• The result is a Decision Letter, not a Notice of Determination, and there's no right to petition the Tax Court from it.

So the equivalent hearing is a real forum for negotiating an installment agreement or an offer, and Appeals officers do resolve cases there. What it can't give you is a court. For an owner whose real dispute is over the amount of a penalty or an assessment they never had a chance to contest, that's the difference between a hearing and a hearing that can be reviewed.

What if you disagree with Appeals?

After a timely CDP hearing, Appeals issues a Notice of Determination. Section 6330(d) gives the taxpayer thirty days from that determination to petition the United States Tax Court. The Tax Court is the only court with jurisdiction, and it reviews the determination rather than starting over.

Under the regulation, the court's review is tied to the record you built. A taxpayer can ask the court to consider only issues that were raised at the hearing, and an issue isn't raised if the taxpayer requested consideration but then failed to give Appeals evidence on it after a reasonable opportunity. In plain terms, a financial statement or a hardship argument mentioned on the phone but never documented in writing is an argument the court may treat as never made. Build the file during the hearing, not after the determination.

The statute also has Appeals retain jurisdiction over its own determination, including later hearings on collection actions taken under it and, once administrative remedies are exhausted, on a change in circumstances that affects the determination. That's the mechanism that lets a business whose cash position changed after the hearing get another look without a new notice.

The counter-considerations

The government's side deserves an honest statement. CDP was designed as a check on collection, not a pause button, and Congress built in the tools to keep it from being one. A hearing request that raises only positions the IRS has identified as frivolous, or that's made to delay, can be disregarded under section 6330(g). The one-hearing-per-period limit prevents serial requests. And because a timely request suspends the collection statute, a taxpayer who files a request with nothing to propose has extended the IRS's time to collect with no offsetting benefit.

From the taxpayer's side, the value of the hearing comes almost entirely from preparation. The thirty days are best spent getting delinquent returns filed, current deposits made, and a documented proposal ready, because those are the things the balancing test rewards. A bare request buys a delay of a few months and a hearing at which Appeals has little to consider.

One Oklahoma-specific note. A CDP hearing addresses federal collection only. An owner with both IRS and Oklahoma Tax Commission balances, which describes most of the payroll-tax situations we see, doesn't get any state relief from the federal hearing, and the OTC's own protest and collection procedures run on separate timelines. The two have to be managed in parallel, and the cash available to settle one is the cash that isn't available to settle the other.

How we think about the decision

One question decides most of this, and we'd want it answered in the first conversation: is the dispute about how to pay, or about whether it's owed? If it's about how to pay, the CDP hearing is the best forum available, provided the compliance work gets done inside the thirty days. If it's about whether it's owed, the first thing to check is whether there was a prior opportunity, because that decides whether the liability can even be raised. And if the thirty days are gone, the equivalent hearing still resolves most payment disputes; it simply can't reach a court.

If a notice of intent to levy or a lien filing notice has reached your business, the window is short and the order of operations matters more than the form. We'd rather look at the notice with you in the first week than in the fourth. Reach us through the contact page or our Oklahoma City office; an early conversation is nearly always cheaper than a levy that's already landed.

This article is general information about Oklahoma, Texas, and federal law, not legal advice, and it does not create an attorney-client relationship. Facts matter; talk to a lawyer about yours.