Representation before the IRS · Related Issues
Third-party correspondence (e.g., witness communications, employment records)
tax year · reviewed 2026-08-18 · I. Ohu
Two regimes govern the IRS going to someone other than the taxpayer, and they are constantly confused. IRC § 7602(c) governs talking to third parties and requires advance notice of a contact period — covered at IRS authority to investigate. IRC § 7609 governs summonsing them, with its own notice, its own deadline, and a right to go to court. This page is about the second.
The rule
Who gets notice. Where a summons requires testimony about, or production of records made or kept on or relating to, “any person (other than the person summoned) who is identified in the summons,” notice must be given to that person — see the figures table for the timing (IRC § 7609(a)(1)). It must be accompanied by a copy of the summons served and contain an explanation of the right to bring a proceeding to quash.
How notice is given. By service in the manner of IRC § 7603, by certified or registered mail to the last known address, or, absent one, left with the person summoned (IRC § 7609(a)(2)). Mailing to the last known address suffices “even if such person … is then deceased, under a legal disability, or no longer in existence.”
What the summons must say. It must identify the taxpayer to whom it relates, or the person to whom the records pertain, and give enough information to let the summoned person locate the records (IRC § 7609(a)(3)).
Service, and who is a recordkeeper. See the figures table for both (IRC § 7603). One entry should stop any enrolled agent: enrolled agents are themselves third-party recordkeepers (IRC § 7603(b)(2)(I)), alongside attorneys and accountants — so a summons for an EA’s client records may be served by certified or registered mail.
Two rights, one deadline. A person entitled to notice may intervene in any § 7604 enforcement proceeding (IRC § 7609(b)(1)) and may begin a proceeding to quash — see the figures table for the deadline and the service requirement that runs with it (IRC § 7609(b)(2)). The person summoned may also intervene, and “shall be bound by the decision … whether or not the person intervenes.”
The pause on production. No examination of the summoned records may be made before the close of the 23rd day after notice is given; and where a quash proceeding was begun within the 20 days and the petition properly served, not at all except by court order or with the petitioner’s consent (IRC § 7609(d)).
When none of this applies. See the figures table for the five exceptions (IRC § 7609(c)(2)). The two that matter most are a summons served on the taxpayer or their officer or employee — not third-party at all — and one in aid of collection of an assessment or judgment already made against the taxpayer, or of a transferee’s or fiduciary’s liability.
The limitation suspension, and its two branches. See the figures table (IRC § 7609(e)). Note the asymmetry: bringing a quash proceeding suspends the clock while it and any appeals are pending; and even where the taxpayer does nothing, the clock is suspended from six months after service until the summoned party’s response is finally resolved.
John Doe summonses. Where the summons does not identify the person whose liability is in issue, it may be served only after a court proceeding establishing the matters in the figures table, and the information sought must be “narrowly tailored” to the identified non-compliance (IRC § 7609(f)).
The concealment exception. Notice may be dispensed with where a court finds, on the Secretary’s petition, reasonable cause to believe that giving it “may lead to attempts to conceal, destroy, or alter records … to prevent the communication of information from other persons through intimidation, bribery, or collusion, or to flee to avoid prosecution, testifying, or production of records” (IRC § 7609(g)). A client who receives no notice has not necessarily been overlooked.
Where a quash proceeding goes. The district court for the district in which the person to be summoned resides or is found (IRC § 7609(h)(1)).
Current figures
| Item | Rule | Authority |
|---|---|---|
| Service of a summons | an attested copy delivered in hand to the person to whom it is directed, or left at that person's last and usual place of abode — with the additional option, for a third-party recordkeeper, of certified or registered mail to the last known addressTY2026 | IRC § 7603(a)–(b)(1) |
| Third-party recordkeepers | banks, savings institutions and credit unions; consumer reporting agencies; persons extending credit through credit cards or similar devices; brokers; attorneys; accountants; barter exchanges; regulated investment companies and their agents; enrolled agents; and owners or developers of computer software source codeTY2026 | IRC § 7603(b)(2) |
| Notice of a third-party summons | notice to the identified person within 3 days of service, and no later than the 23rd day before the day fixed in the summons for examination of the records — accompanied by a copy of the summons served and an explanation of the right to bring a proceeding to quashTY2026 | IRC § 7609(a)(1) |
| Petition to quash | a proceeding to quash must be begun not later than the 20th day after notice is given, and within the same 20 days a copy of the petition must be mailed by registered or certified mail to the person summoned and to the office the Secretary directs in the noticeTY2026 | IRC § 7609(b)(2) |
| Exceptions | 5 — a summons served on the person whose liability is in issue or their officer or employee; one issued to determine whether records of an identified person's business transactions have been made or kept; one issued solely to identify a person with a numbered account; one issued in aid of collection of an assessment or judgment against that person, or of a transferee's or fiduciary's liability; and one issued by an IRS criminal investigator and served on someone who is not a third-party recordkeeperTY2026 | IRC § 7609(c)(2) |
| Limitation suspension | the § 6501 assessment and § 6531 criminal periods are suspended while a proceeding brought by the taxpayer under § 7609(b) and any appeals are pending; and, for anyone else, from 6 months after service of the summons until the summoned party's response is finally resolvedTY2026 | IRC § 7609(e) |
| John Doe summons | 3 findings a court must make before a John Doe summons may be served — that it relates to the investigation of a particular person or ascertainable group or class; that there is a reasonable basis for believing they may have failed to comply with an internal revenue law; and that the information is not readily available from other sources — and the information sought must be narrowly tailored to that failureTY2026 | IRC § 7609(f) |
How it works in practice
Diary the twentieth day the moment the notice arrives. The right to petition to quash lasts 20 days from notice and is not extendable — the shortest and least forgiving deadline in an examination, and it usually arrives as an envelope the client does not recognise. Tell clients to forward IRS mail the day it comes.
Filing the petition is only half the requirement. Within the same 20 days the petitioner must mail by registered or certified mail a copy of the petition to the person summoned and to the office the Secretary directs in the notice. A petition filed in time but not served in time does not stop production — § 7609(d)(2) protects the records only where “the requirements of subsection (b)(2)(B) have been met.”
Petitioning stops the clock in both directions. It suspends the § 6501 assessment and § 6531 criminal periods while the proceeding and any appeals are pending. Say so before filing: quashing a summons buys time for the IRS too, and where the statute is the client’s best asset the petition may cost more than the records are worth.
The six-month branch operates without anyone doing anything. If the summoned party’s response is unresolved, the limitation periods are suspended from six months after service until final resolution, whatever the taxpayer does. A bank that simply sits on a summons extends the statute. Compute no assessment period without asking whether an unresolved third-party summons is outstanding.
“In aid of collection” is the exception that surprises people. Once an assessment is made or a judgment entered, a summons issued to collect it carries no notice right and no right to quash. A client in an examination has these protections; the same client in collection, on an assessed liability, generally does not. Tell them when the transition happens.
A summons to the client’s own employer is still a third-party summons. The exception covers a summons served on “the person with respect to whose liability the summons is issued, or any officer or employee of such person” — that is, of the taxpayer. Where an individual’s employer is summonsed for payroll records, the taxpayer is identified in the summons and entitled to notice.
Everything turns on being identified in the summons. The notice right attaches to a person “identified in the summons” whose records or testimony are sought. A summons drafted so as not to identify the taxpayer is a John Doe summons, which Congress dealt with separately by requiring advance court authorisation on three findings, narrowly tailored.
The envelope on the kitchen table
A client mentions in passing, 26 days after it arrived, that he received "some IRS thing about the bank." It is a § 7609(a) notice with a copy of a summons served on his bank.
Analysis. The right to petition to quash is gone. IRC § 7609(b)(2)(A) allows a proceeding to be begun "not later than the 20th day after the day such notice is given," with no extension, and the 23-day bar on examining the records has also expired. What remains is intervention in any § 7604 enforcement proceeding. The lesson is operational.
The petition that was filed but not served
A representative files a petition to quash on day 18, then mails copies to the summoned bank and the IRS office named in the notice on day 24, by ordinary first-class post.
Analysis. Two defects. IRC § 7609(b)(2)(B) requires the copy to be mailed "not later than the close of the 20-day period," by registered or certified mail. Because (b)(2)(B) was not met, the protection in § 7609(d)(2) — no examination except by court order or with the petitioner's consent — does not attach, and the bank may produce. The petition may proceed, but the records will already be in IRS hands.
The bank that did nothing
A summons is served on a client's bank in February. The bank neither complies nor refuses, and correspondence drifts. The following year the representative calculates that the assessment period expires in April and tells the client the IRS is nearly out of time.
Analysis. The advice is wrong. Under IRC § 7609(e)(2), where the summoned party's response is unresolved the § 6501 and § 6531 periods are suspended from six months after service until the response is finally resolved — regardless of what the taxpayer did. The clock stopped in August of the earlier year and has not restarted. Any outstanding third-party summons belongs in the limitation calculation.
The summons that came after assessment
A client's liability was assessed two years ago and a revenue officer is collecting. The officer summonses the client's employer for payroll records, and the client asks the representative to petition to quash.
Analysis. There is no right to quash. IRC § 7609(c)(2)(D) excepts a summons issued in aid of the collection of an assessment made or judgment rendered against the person whose liability is in issue, so the notice and quash machinery does not apply at all. The client's protections at this stage lie in the collection due process and appeal routes, and the representative should redirect them there.
20 days from notice to petition to quash, and the copy must be mailed to the summoned person and the named IRS office by registered or certified mail within the same 20 days.
A summons in aid of collection carries no notice and no right to quash. The protections belong to the examination stage.
Petitioning suspends the assessment and criminal limitation periods while the proceeding and any appeals are pending. Weigh that before filing.
An unresolved summons suspends the statute after six months even if the taxpayer does nothing. Always ask whether one is outstanding before computing a limitation date.
How this has changed
The John Doe standard was tightened. Section 7609(f) has always required the three court findings, but the closing sentence — that the Secretary shall not issue such a summons “unless the information sought to be obtained is narrowly tailored to information that pertains to the failure (or potential failure)” of the person or class to comply with identified provisions — came in with the Taxpayer First Act of 2019. A John Doe summons sweeping beyond the identified non-compliance is now vulnerable in a way it was not.
Section 7602(c) was rewritten in the same Act, and the two are easy to conflate. The third-party contact notice requires a specific notice at least 45 days before a contact period of no more than one year. The § 7609 third-party summons notice is a different requirement with different timing — within 3 days of service and no later than the 23rd day before the examination date. Neither substitutes for the other.
The six-month suspension branch is not the original rule. Section 7609(e) once suspended the limitation periods only where the taxpayer took action. The second branch — from six months after service until the response is finally resolved, whoever acts — closes the gap an unresponsive third party would otherwise open.
Exam focus
Know that § 7602(c) governs contacting third parties and § 7609 summonsing them — separate regimes with different notice rules.
Know the § 7609 notice timing: within 3 days of service and no later than the 23rd day before the examination date, with a copy of the summons and an explanation of the right to quash.
Know the 20-day deadline to begin a proceeding to quash, and that a copy must be mailed by registered or certified mail within the same 20 days to the person summoned and the office named in the notice.
Know the exceptions, especially a summons served on the taxpayer and one issued in aid of collection of an assessment or judgment.
Know that the limitation periods are suspended while a quash proceeding is pending, and separately from six months after service until an unresolved response is resolved.
Know the three findings required before a John Doe summons may be served, and that the information must be narrowly tailored.
Know that enrolled agents, attorneys and accountants are third-party recordkeepers (IRC § 7603(b)(2)), so a summons for their client records may be served by certified or registered mail.
Check yourself
1. How long does a person entitled to notice have to begin a proceeding to quash a third-party summons? (A) 10 days from notice (B) 20 days from notice (C) 23 days from notice (D) 30 days from service of the summons Answer: B. And within the same 20 days a copy of the petition must be mailed by registered or certified mail to the person summoned and the office the notice names.
2. A revenue officer summonses an employer for payroll records to collect an assessment already made against the taxpayer. What rights does the taxpayer have under § 7609? (A) Notice and the right to quash (B) Notice only (C) None — a summons in aid of collection of an assessment is excepted (D) The right to intervene only Answer: C. IRC § 7609(c)(2)(D). The taxpayer’s protections at that stage lie in the collection appeal routes.
3. A summoned bank never resolves its response. What happens to the assessment period? (A) It runs normally (B) It is suspended from six months after service until the response is finally resolved (C) It is suspended only if the taxpayer petitions to quash (D) It is extended by one year Answer: B. IRC § 7609(e)(2) operates regardless of whether the taxpayer acts.
4. Which must a court find before a John Doe summons may be served? (A) Only that the summons relates to a particular person or ascertainable class (B) That there is probable cause of a crime (C) That the summons relates to a particular person or class, there is a reasonable basis for believing non-compliance, and the information is not readily available from other sources (D) That the taxpayer consented Answer: C. And since 2019 the information sought must also be narrowly tailored to the identified non-compliance.
5. When must notice of a third-party summons be given? (A) Within 3 days of service and no later than the 23rd day before the examination date (B) 45 days before the contact period (C) Within 20 days of service (D) At the same time the summons is served Answer: A. The 45-day rule belongs to the § 7602(c) third-party contact notice, which is a different provision.
Change log
- Initial publication from IRC §§ 7609, 7602, 7603 and 6501, each opened at source.