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Electronic Code of Federal Regulations

We invite you to try out our new beta eCFR site at https://ecfr.federalregister.gov. We have made big changes to make the eCFR easier to use. Be sure to leave feedback using the Feedback button on the bottom right of each page!

Important Information for the User

What is the e-CFR, and what is the legal status of this publication?

  • The Electronic Code of Federal Regulations (e-CFR) is a web version of the Code of Federal Regulations (CFR) that we update daily to better reflect its current status. The e-CFR is an editorial compilation of CFR material and amendments published in the daily Federal Register.
  • The Administrative Committee of the Federal Register (ACFR) has authorized the National Archives and Records Administration’s Office of the Federal Register (OFR) and the Government Publishing Office (GPO) to develop and maintain the e-CFR as an informational resource. The OFR/GPO partnership is committed to presenting accurate and reliable regulatory information on the e-CFR with the objective of eventually establishing the e-CFR as a publication officially recognized by the ACFR. While we try to ensure that the material on the e-CFR is accurate, those relying on it for legal research should verify their results against the most current official edition of the CFR, the daily Federal Register, and the List of CFR Sections Affected (LSA), all available online at www.govinfo.gov. For complete information about, and access to, our official publications and services, go to the OFR's website on www.archives.gov.
  • The OFR updates the material in the e-CFR on a daily basis. We do not update in real-time, but you can find how current the material is at the top of all e-CFR web pages. Generally, the e-CFR is current within two business days.
  • As of January 1, 2015, we capture the amendments posted each day so that you can look at what was posted on an earlier day. The previous e-CFR material is clearly identified and separated for the reader to avoid any confusion with currently-effective material. If you are searching for an incorporated amendment based on a recent effective date, remember that we do not integrate amendments on their effective date in real-time. Amendments are typically available about 2 business days after their effective date.

How does the e-CFR function?

  • The OFR updates the e-CFR according to the effective dates of amendments published in the daily Federal Register.
  • Shortly after the effective date of an amendment, the OFR integrates the changes into the e-CFR.
  • For amendments that are effective in the future, the OFR inserts hypertext links into the affected e-CFR provisions so that users can review these upcoming amendments. When the effective date arrives, the hypertext links are removed and the OFR integrates the changes into the e-CFR.
  • If the effective date of a regulation falls on a weekend or Federal holiday, the amendments are integrated into the current Code within two Federal business days.

What special rules and procedures apply to display of future amendments and effective dates in the e-CFR?

  • Publication of amendments and editorial information. The upcoming amendment, hyperlinked from relevant e-CFR provisions, show each amendment as it appeared in the daily Federal Register with some additional information. The information provided includes the amendatory instruction, the text of the amendment (if any), the effective date(s), the Federal Register publication date and page citation, and a link to the Federal Register page (PDF format) where the amendment was published.
  • Researching amendment files. Even if we link to amendments effective in the future, that does not guarantee that they become effective as originally stated in the Federal Register document. Agencies may correct, delay, or withdraw amendments before their effective dates. We advise users to check the e-CFR the day after a regulation is scheduled to go into effect to be certain that the agency did not publish a correction, delay, or withdrawal document in the daily Federal Register.
  • Temporary rules and other un-codified rulemaking actions. The e-CFR (like the annual editions of the CFR) does not include, or link to “temporary rules” or other regulations that will be in effect for less than one year. The e-CFR also does not link to Federal Register documents that do not change the text or effective date of regulations. These include waivers, most interpretive rules, policy statements, and clarifications, as well as documents that affect compliance dates and applicability dates. However, these types of documents are available in the daily Federal Register and are referenced in the LSA (List of CFR Sections Affected).
  • Amendments affected by the Paperwork Reduction Act. Under the Paperwork Reduction Act, certain material related to information collections is not effective until approved by the Office of Management and Budget (OMB). For the convenience of users, an amendment published in the daily Federal Register with OMB approval pending is provisionally incorporated into the text of the current Code, along with an effective date note carried at the end of the section.
  • Partially-effective CFR amendments. A new regulation may contain units of text with different effective dates. If a unit of text has a later effective date than the text in surrounding parallel units, the e-CFR includes the later-effective text in the current Code for the convenience of users. An effective date note carried at the end of the section alerts readers to the later effective date.
  • Changes to authority citations. If an authority citation is revised after publication of an amendment with a future effective date, the e-CFR amendment file links to the changed authority citation until the amendment is incorporated into the current Code.
  • Inconsistent or erroneous amendments. An amendment that was incorrectly drafted or that is clearly inconsistent with the codification structure or effectiveness of the current Code or pending amendments is cited in an editorial note, either within the text of the section where the amendment would appear, or at the end of the section.

How are editorial errors accounted for in the e-CFR?

  • The e-CFR Corrections Compilation lists editorial errors OFR made in processing e-CFR amendments. The Corrections Compilation cites the CFR title and section affected, the corrective action taken, the “current as of” date the error occurred, and the “current as of” date the error was corrected.
  • Errors made by issuing agencies are not reflected in the Corrections Compilation table. Agencies correct their errors by publishing documents to amend the CFR in the daily Federal Register. Those changes are integrated into e-CFR in the same manner as other amendments. Agency correction documents are generally called “final rule corrections” or “technical amendments.”

Retrieval Statistics

July 2021
June 2021
May 2021
April 2021
March 2021
September 2018
August 2018
July 2018
June 2018
May 2018
April 2018
March 2018

These Comma Separated Values files show the number of retrievals for each Title and Part by month. Any time there is a retrieval from the Part, whether it be the full Part, or a smaller portion of the part, it is counted. There is one row in the CSV file for each Title and Part that has had at least one retrieval. Each row consists of seven columns as follows:

TitleThe Title number of the CFR
PartThe Part Number that was retrieved from that Title
TotalThe total number of retrievals from this Part. This should equal the total of the next four columns.
Full PartThe number of times the full Part was retrieved
SubpartThe number of times a full Subpart was retrieved from that Part
AppendixThe number of times an Appendix was retrieved from that Part
SectionThe number of times a single Section was retrieved from that Part


This line in the .CSV file:


Specifies there were 68,480 total retrievals from Title 14, Part 91. Of that 68,480 retrievals, 33,551 were retrievals of the full Part, 1,400 were retrievals at the Subpart level, 642 were retrievals of Appendixes, and 32,887 were retrievals at the Section level.

33551 + 1400 + 642 + 32887 = 68480

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