Representation before the IRS · Representing a taxpayer in the collection process

IRS Collection Summons (e.g., purposes)

Q: An IRS summons may be issued for all of the following except:

D. Compelling a taxpayer to waive the statute of limitations — The four purposes are in IRC § 7602(a).

Q: A third party summoned for a taxpayer's records. The taxpayer's proceeding to quash must be begun:

A. Within 20 days after the notice is given — IRC § 7609(b)(2)(A), and a copy of the petition must be mailed to the person summoned and the IRS in the same period.

Q: A Justice Department referral is in effect against a taxpayer. The IRS:

B. May neither issue a summons nor begin an enforcement action — IRC § 7602(d)(1).

Q: The IRS wishes to inspect a taxpayer's books for a year already examined. It may do so:

B. If the taxpayer requests it, or the Secretary notifies the taxpayer in writing that an additional inspection is necessary — IRC § 7605(b).

Q: A taxpayer ignores a summons. The immediate consequence is:

B. The IRS must apply to a United States district court under § 7604 to enforce it — The summons is administrative to issue and judicial to enforce.

Verification 2026 Verified
tax year · reviewed 2026-08-18 · I. Ohu

The summons is the IRS’s compulsory process, and its limits matter more to a representative than its scope. It is administrative — the IRS issues it itself, without a court — but it is only enforceable through one, and several things switch it off entirely. The deadlines attached to a third-party summons are short and unforgiving.

The rule

The four purposes. The Secretary may issue a summons for the purpose of ascertaining the correctness of any return, making a return where none has been made, determining the liability of any person for internal revenue tax — or the liability at law or in equity of a transferee or fiduciary — and collecting any such liability (IRC § 7602(a)). Collection is one of the four, which is why the summons sits in this section as well as in examinations.

What it can compel. Examination of any books, papers, records or other data that may be relevant or material to the inquiry; the appearance of the person liable, their officers or employees, anyone with custody of relevant books, or any other person the Secretary may deem proper, to produce records and give testimony under oath; and the taking of such testimony (IRC § 7602(a)(1)–(3)).

Service. By attested copy delivered in hand to the person, or left at their last and usual place of abode; the certificate of service is evidence of the facts it states. Records need only be described with reasonable certainty. A summons to a third-party recordkeeper may also be served by certified or registered mail (IRC § 7603(a), (b)).

How service is actually recorded. The certificate of service records one of four methods: hand delivery; left at the last and usual place of abode, naming the person it was left with if any; certified or registered mail where the recipient is a § 7603(b) third-party recordkeeper; or another method conforming to IRS procedure with the witness’s consent, such as facsimile (IRM 25.5.2).

A corporation has no place of abode. Because § 7603(a)‘s abode method presupposes one, a summons may not be served by fixing it to the door of a corporate building, and may not simply be left at the corporate offices or with an officer’s secretary. It must be served in person on someone authorised to receive process, unless the witness is summoned as a third-party recordkeeper (IRM 25.5.2).

Timing. The date fixed for appearance is not less than 10 days from the date of the summons^TY2026 (IRC § 7605(a)). Time and place must be reasonable under the circumstances.

One inspection a year. No taxpayer shall be subjected to unnecessary examination, and only one inspection of a taxpayer’s books of account per taxable year unless the taxpayer requests otherwise or the Secretary notifies the taxpayer in writing that an additional inspection is necessary (IRC § 7605(b)).

Third-party summonses carry notice and a right to quash. Where a summons requires testimony or records relating to a person other than the one summoned, notice must be given to that person within 3 days of service, and no later than the 23rd day before the day fixed in the summons for examining the records^TY2026, with a copy of the summons and an explanation of the right to quash (IRC § 7609(a)). A person entitled to that notice may intervene in any enforcement proceeding, and may begin a proceeding to quash not later than the 20th day after notice is given, with a copy of the petition mailed to the person summoned and to the IRS within the same period^TY2026 (IRC § 7609(b)).

Third-party contacts generally need advance warning. Separately from the summons power, the IRS may not contact anyone other than the taxpayer about determining or collecting their liability unless it has given the taxpayer notice at least 45 days before a period of not more than one year in which third-party contacts are intended^TY2026, and only where there is an actual intent to make such contacts (IRC § 7602(c)(1)).

A Justice Department referral switches the power off. No summons may be issued, and no enforcement action begun, while a Justice Department referral is in effect against that person — which happens when the Secretary recommends grand jury investigation or criminal prosecution, or a § 6103(h)(3)(B) disclosure request is made (IRC § 7602(d)).

Two further limits. The IRS shall not use financial status or economic reality examination techniques to determine unreported income without a reasonable indication that unreported income is likely (IRC § 7602(e)). And no person other than an IRS officer or employee or Office of Chief Counsel may question a witness under oath on the Secretary’s behalf (IRC § 7602(f)).

Enforcement is judicial. A summons is enforced by application to a United States district court under § 7604; the IRS cannot enforce it itself.

Witness fees. Persons summoned are paid fees and mileage, and reimbursed reasonably necessary search, reproduction and transport costs — but not where the person has a proprietary interest in the records, and not where the person summoned is the taxpayer or their officer, employee, agent, accountant or attorney acting as such (IRC § 7610(a), (b)).

Current figures

Item	Value
Date fixed for appearance	not less than 10 days from the date of the summons^TY2026
Notice to the third party	within 3 days of service, and no later than the 23rd day before the day fixed in the summons for examining the records^TY2026
Proceeding to quash	not later than the 20th day after notice is given, with a copy of the petition mailed to the person summoned and to the IRS within the same period^TY2026
Notice before third-party contacts	at least 45 days before a period of not more than one year in which third-party contacts are intended^TY2026

How it works in practice

Twenty days is the number to diary, and it runs from notice, not from the summons. A client who learns their bank has been summoned has until the twentieth day after the § 7609(a) notice to petition to quash — and must mail a copy of the petition to the person summoned and to the IRS within the same twenty days. Both steps are jurisdictional in practice. Nothing else in this area moves that fast.

“Any other person the Secretary may deem proper” is genuinely that broad. The relevance standard is “may be relevant or material”, which is lower than evidentiary relevance. Arguing about scope rarely succeeds. The productive arguments are the categorical ones: a Justice Department referral in effect, a second inspection without the written notice § 7605(b) requires, or financial status techniques used without the reasonable indication § 7602(e) demands.

The referral bar is absolute and worth checking early. Once the Secretary has recommended prosecution or a grand jury investigation, the administrative summons power is gone — the IRS cannot issue one and cannot enforce one already issued. A client under criminal investigation who receives a summons has a complete answer, and the timing of the referral is the whole question.

Enforcement being judicial is the practical protection. Ignoring a summons is not costless, but it does not itself produce sanctions: the IRS must go to a district court under § 7604, and that proceeding is where objections get heard. A client should not be told a summons is self-executing, and should not be told it can safely be ignored either.

Twenty days from the wrong date

A client's accountant is served with a summons on 3 March for records relating to the client. The client receives the § 7609 notice on 5 March. The summons fixes 30 March for production. The representative calendars twenty days from the summons date.

Analysis. Wrong start. Section 7609(b)(2)(A) runs the quash period from the day the notice is given, so it closes on 25 March, not 23 March — and the copy of the petition must reach the person summoned and the IRS within the same period. Calendaring from the summons date happens to be conservative here, but the reverse error, calendaring from the production date, loses the right entirely.

The second look nobody authorised

A client's 2023 books were examined in 2024 and the case closed. In 2026 a revenue officer asks to inspect the same year's books again in connection with collection. No written notice has been given.

Analysis. Section 7605(b) permits only one inspection of a taxpayer's books of account for each taxable year unless the taxpayer requests otherwise or the Secretary notifies the taxpayer in writing that an additional inspection is necessary. The written notice is the condition, not a formality. Raising it is more productive than arguing relevance, because the limit is categorical.

The summons that could not issue

A client under examination learns from counsel that the case was referred for criminal prosecution two months ago. A summons for business records arrives the following week.

Analysis. Section 7602(d) bars issuing a summons, and bars beginning a § 7604 enforcement action, while a Justice Department referral is in effect — which it is once the Secretary has recommended grand jury investigation or prosecution. The summons should not have issued. The date of the referral relative to the date of the summons decides the point, and it is worth establishing before responding to anything.

Traps

The quash period runs from notice, not from the summons or the production date. Twenty days, and the copies go out inside them.

Collection is one of the four statutory purposes. A summons is not confined to examinations.

A Justice Department referral switches the power off entirely.

One inspection per taxable year, absent the taxpayer's request or written notice from the Secretary.

A summons is not self-enforcing. Enforcement runs through a district court under § 7604.

A corporation cannot be served by fixing the summons to its door. It has no place of abode; service must be in person on someone authorised to receive process.

The taxpayer and their own agents get no witness fees. IRC § 7610(b).

How this has changed

The protections around the summons are all later additions to a very old power. Section 7609’s third-party notice and the right to quash came from the Tax Reform Act of 1976; § 7602(d)‘s Justice Department referral bar dates from the same period and settled a question the courts had been answering inconsistently. The Restructuring and Reform Act of 1998 added § 7602(e)‘s limit on financial status techniques and the original third-party contact notice in § 7602(c). That last provision was rewritten by the Taxpayer First Act of 2019, which replaced a general advance-notice regime with the current one — notice at least 45 days before a specified period of no more than one year, and only where there is an actual intent to make contacts. Material written before 2019 describes a different rule.

Exam focus

The four purposes in § 7602(a), including collection. Who may be summoned — the taxpayer, their officers and employees, custodians of relevant books, and any other person the Secretary deems proper. The 10-day minimum before appearance. The § 7609 third-party notice within 3 days and no later than the 23rd day before production, and the 20-day quash period running from notice. That a Justice Department referral bars both issuance and enforcement. Section 7605(b)‘s one-inspection rule and its written-notice exception. That enforcement is judicial under § 7604.

Check yourself

1. An IRS summons may be issued for all of the following except: (A) Ascertaining the correctness of a return (B) Making a return where none has been made (C) Collecting a tax liability (D) Compelling a taxpayer to waive the statute of limitations Answer: D. The four purposes are in IRC § 7602(a).

2. A third party summoned for a taxpayer’s records. The taxpayer’s proceeding to quash must be begun: (A) Within 20 days after the notice is given (B) Within 30 days of the summons (C) Before the date fixed for production (D) Within 10 days of service Answer: A. IRC § 7609(b)(2)(A), and a copy of the petition must be mailed to the person summoned and the IRS in the same period.

3. A Justice Department referral is in effect against a taxpayer. The IRS: (A) May issue a summons but not enforce it (B) May neither issue a summons nor begin an enforcement action (C) May issue a summons with Chief Counsel approval (D) Is unaffected Answer: B. IRC § 7602(d)(1).

4. The IRS wishes to inspect a taxpayer’s books for a year already examined. It may do so: (A) Freely (B) If the taxpayer requests it, or the Secretary notifies the taxpayer in writing that an additional inspection is necessary (C) Only with a court order (D) Never Answer: B. IRC § 7605(b).

5. A taxpayer ignores a summons. The immediate consequence is: (A) Automatic penalties (B) The IRS must apply to a United States district court under § 7604 to enforce it (C) Immediate levy (D) Referral to the Justice Department Answer: B. The summons is administrative to issue and judicial to enforce.

Change log

2026-08-18Initial publication from IRC §§ 7602, 7603, 7604, 7605, 7609 and 7610.