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Treasury Regulations · 26 CFR

§ 2.1-25. Assessment and collection of deficiencies.

In effect eCFR current as of October 15, 2026

Regulation text, no changes From the eCFR, current as of October 15, 2026. The eCFR is an authoritative but unofficial editorial compilation of the Code of Federal Regulations; the official text is the annual CFR on govinfo. Compare it with this section on ecfr.gov (external site) or the official annual CFR on govinfo (external site).

Regulation under 26 U.S.C. § 1

Cite as 26 CFR § 2.1-25

At a glance

Read from the text and its source citation. Not part of the regulation.

Status
In the current eCFR
Source
T.D. 6820, 30 FR 6030, Apr. 29, 1965, unless otherwise noted.
Issued under
26 U.S.C. § 1
Length
127 words · about 1 min to read

Any additional tax, including the 1.1 percent amount imposed by section 511(i) of the Act, due on account of withdrawal from a construction reserve fund, or failure to comply with section 511 of the Act or the regulations in this part, is collectible as a deficiency. Interest upon such deficiency will run from the date the withdrawal or noncompliance occurs. The amount of any deficiency, including interest and additions to the tax, determined as a result of such withdrawal or noncompliance, may be assessed, or a proceeding in court for the collection thereof may be begun without assessment, at any time and without regard to any period of limitations or any other provisions of law or rule of law, including the doctrine of res judicata.

Where it sits in 26 CFR

  1. Subchapter A Income tax
  2. Part 2 Maritime construction reserve fund

Nearby sections