Skip to main content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
To Find Regulations:
- The Government Publishing Office (GPO) publishes an official annual version of the CFR in print and on its website, as well as a more frequently updated, but unofficial, version called the eCFR.
- The official annual version of the CFR and the eCFR are linked at the bottom of this box.
- The above sources of the CFR can be navigated by keyword search, by using an index, or by annotations made in the USC
- Keyword search: both the annual CFR and eCFR have browse and search options.
- In the annual CFR, click "search" at the top right of the page to search by keyword, advanced options, or by citation.
- In the eCFR, search options are available by clicking in the menu to the left of the page.
- In either case, a keyword search can sometimes be a better locator than the index, so you may wish to try both.
- Index: the CFR index is a PDF that is updated with each publication
- The 2019 version is the latest
- You can use this to find where a term or topic is located in the CFR
- Annotations in the USC: code annotations often cite to the CFR.
- For one example, the USC available in Westlaw Edge may cite to relevant sections of the CFR in:
- the "Citing References" link
- the "Notes of Decision" tab
- the "Context & Analysis" tab
Electronic Code of Federal Regulations (e-CFR)
Not an official legal edition, e-CFR is an editorial compilation of CFR material and Federal Register amendments produced by the National Archives and Records Administration's Office of the Federal Register (OFR) and the Government Publishing Office. The OFR updates the material in the e-CFR on a daily basis.
Code of Federal Regulations (Annual Edition) [GovInfo FDsys]
The Code of Federal Regulations (CFR) annual edition is the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. It is divided into 50 titles that represent broad areas subject to Federal regulation. The 50 subject matter titles contain one or more individual volumes, which are updated once each calendar year, on a staggered basis.
Code of Federal Regulations Index and Finding Aids
The CFR Index and Finding Aids website containing the most recent index as well as those from prior years. Revised yearly as of January 1.
The official CFR is updated once a year in a series of 4 updates to a group of titles. The schedule for these updates is as follows:
- Titles 1-16 are updated January 1st
- Titles 17-27 are updated April 1st
- Titles 28-41 are updated July 1st
- Titles 42-50 are updated October 1st
There are two methods listed below to help you make sure that you are looking at the most current version of federal regulations.
To Update Regulations:
There is a 'quick' way to update regulation which does not use the official version of the CFR. While you are becoming more familiar with updating regulations, it may be a best practice for you to use the "Official" method detailed below.
- "Quick" Method: The eCFR is a quick way to determine updates, and the versions on Lexis and Westlaw platforms are also updated more frequently than the official version.
- To update this way, determine how current the regulation is in the CFR and then search the Federal Register for information from that date to present.
- "Official" Method: Follow the below 'steps' to update regulations in the official CFR:
- Find the text of the regulation in the annual edition of the C.F.R., and make note of the revision date of the title.
- Check the most recent pamphlet of LSA: List of CFR Sections Affected. (click on Monthly LSA) References in the LSA are to page numbers in the Federal Register.
- Check for changes after the dates listed on the title page of the LSA by using the cumulative list of "CFR Parts Affected during [month]" in the Reader Aids section of the latest Federal Register issue.
- Check the Federal Register issues cited, if any, to see the text of the changes to the regulation.
List of CFR Sections Affected
Lists proposed, new, and amended Federal regulations that have been published in the Federal Register since the most recent revision date of a CFR title.
CFR Parts Affected from the Federal Register
Tool to help find final and proposed rules that affect the CFR and have been published in the Federal Register within the past 24 hours, week, month, or within a specific date range.
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.