26 CFR § 156.6694-4 - Extension of period of collection when tax return preparer pays 15 percent of a penalty for understatement of taxpayer's liability and certain other procedural matters.

---
identifier: "/us/cfr/t26/s156.6694-4"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "26 CFR § 156.6694-4 - Extension of period of collection when tax return preparer pays 15 percent of a penalty for understatement of taxpayer's liability and certain other procedural matters."
title_number: 26
title_name: "Internal Revenue"
section_number: "156.6694-4"
section_name: "Extension of period of collection when tax return preparer pays 15 percent of a penalty for understatement of taxpayer's liability and certain other procedural matters."
chapter_name: "INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY"
subchapter_number: "D"
subchapter_name: "MISCELLANEOUS EXCISE TAXES"
part_number: "156"
part_name: "EXCISE TAX ON GREENMAIL"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "26 U.S.C. 6001, 6011, 6061, 6071, 6091, 6161, and 7805."
regulatory_source: "T.D. 8379, 56 FR 65685, Dec. 18, 1991, unless otherwise noted."
cfr_part: "156"
---


# 156.6694-4 Extension of period of collection when tax return preparer pays 15 percent of a penalty for understatement of taxpayer's liability and certain other procedural matters.

(a) *In general.* For rules relating to the extension of period of collection when a tax return preparer who prepared a return or claim for refund for tax under section 5881 of the Internal Revenue Code pays 15 percent of a penalty for understatement of taxpayer's liability and procedural matters relating to the investigation, assessment and collection of the penalties under section 6694(a) and (b), the rules under § 1.6694-4 of this chapter will apply.

(b) *Effective/applicability date.* This section is applicable to returns and claims for refund filed, and advice provided, after December 31, 2008.

[T.D. 9436, 73 FR 78461, Dec. 22, 2008]