R Observatory: Metrics for fixest version 0.14.2

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

fixest

0.14.2

Fast Fixed-Effects Estimations

54packages depend

585.4Kdownloads / year

56.3%test coverage

13/13checks pass

Overview

About

Maintained by Laurent BergeFirst published 2019-09-0334 releasesCRAN page ↗GitHub ↗

Fast and user-friendly estimation of econometric models with multiple fixed-effects. Includes ordinary least squares (OLS), instrumental variables (IV), generalized linear models (GLM), maximum likelihood estimation (ML), and the negative binomial. The core of the package is based on optimized parallel C++ code, scaling especially well for large data sets. The method to obtain the fixed-effects coefficients is based on Bergé, Butts, McDermott (2026) doi:10.48550/arXiv.2601.21749. Further provides tools to export and view the results of several estimations with intuitive design to change the standard-errors.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("fixest", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("lrberge/fixest")

Development version from lrberge/fixest. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-fixest

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-fixest

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-fixest

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 10.4 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.06

56.3%

Coverage · measured lines

100%

Documentation · exports

12

Dependencies · direct

Check history

OK2026-08-05
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-07-24
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-07-23
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Show 5 earlier snapshots

ERROR2026-06-08
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-04-25
12 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-04-22
11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
10 OK · 3 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
NOTE2026-03-10
11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 696 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 67% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 98%
Return-value docs: 86%
References docs: 12%

Downloads

585.4K

CRAN downloads in the past year

Rank #532 · ~1.6K/day · ~48.8K/mo

Releases R versions

Daily download trend is not available in this view yet.

38.9K30 days

135.4K90 days

585.4K1 year

Compare downloads with other packages →

Also on6.6K r2u20 autocran21.3K conda_forge41 c2d4u

Repository

GitHub ↗ lrberge/fixest

452Stars

77Forks

99Open issues

5Open PRs

7Releases

2,294Commits

19Contributors

2,294 commits · Last activity 2026-06-26 · +0.9% stars, 30d

Stars over time

2025-08-01 · 4162026-08-18 · 452

Repository practices

Upstream repositoryBeta

2 development-tooling and community-health practices detected across 2 families in the upstream repository

Checks run against github.com/lrberge/fixest on 2026-08-16.

Continuous integration (1)

GitHub Actions

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

18 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.5.0

Imports (12)

statsgraphicsgrDevicestoolsutilsmethodsnumDerivnlmesandwich Rcpp dreamerr stringmagic

LinkingTo (1)

Rcpp

Suggests (14)

knitr rmarkdown data.table plmMASSpander ggplot2 lfe tinytex pdftools emmeans estimability AERMatrix

Enhances (0)

none

Dependency license breakdown →

Code & Tests

Datasets

People & History

People (5)

Maintainer (1)

Laurent Berge

Author, Maintainer

Authors (1)

Laurent Berge

Author, Maintainer

Contributors (4)

Kyle Butts

Contributor · added in 0.13.2

Sebastian Krantz

Contributor · added in 0.8.0

Russell Lenth

Contributor · added in 0.12.0

Grant McDermott

Contributor · added in 0.9.0

Package Timeline

34 releases. Pick two to compare their code metrics. R releases are shown for context.

0.14.2Latest
2026-06-26 · current release · diff ↗
0.14.1
2026-05-04 · diff ↗
R
R 4.6.0 released · 2026-04-24
0.14.0
2026-03-18 · diff ↗
0.13.2
2025-09-08 · diff ↗
R
R 4.5.0 released · 2025-04-11
0.12.1
2024-06-13 · diff ↗
R
R 4.4.0 released · 2024-04-24
0.12.0
2024-04-18 · diff ↗
0.11.2
2023-11-24 · diff ↗
R
R 4.3.0 released · 2023-04-21
0.11.1
2023-01-10 · diff ↗
0.11.0
2022-10-19 · diff ↗
R
R 4.2.0 released · 2022-04-22
0.10.4
2022-04-01 · diff ↗
0.10.3
2022-03-02 · diff ↗

Show 28 earlier events

0.10.2
2022-02-18 · diff ↗
0.10.1
2021-10-31 · diff ↗
0.10.0
2021-09-28 · diff ↗
0.9.0
2021-06-19 · diff ↗
R
R 4.1.0 released · 2021-05-18
0.8.4
2021-03-29 · diff ↗
0.8.3
2021-03-01 · diff ↗
0.8.2
2021-02-11 · diff ↗
0.8.1
2021-01-13 · diff ↗
0.8.0
2020-12-14 · diff ↗
0.7.1
2020-10-27 · diff ↗
0.7.0
2020-10-24 · diff ↗
0.6.0
2020-07-13 · diff ↗
0.5.1
2020-06-18 · diff ↗
0.5.0
2020-06-10 · diff ↗
R
R 4.0.0 released · 2020-04-24
0.4.1
2020-04-14 · diff ↗
0.4.0
2020-03-29 · diff ↗
0.3.1
2020-02-09 · diff ↗
unarchivedReturned to CRAN
2020-02-09
archivedRemoved from CRAN
2020-02-08
array overrun was not corrected in time
0.3.0
2020-02-01 · diff ↗
0.2.1
2019-11-23 · diff ↗
0.2.0
2019-11-19 · diff ↗
0.1.2
2019-10-04 · diff ↗
0.1.1
2019-09-20 · diff ↗
0.1.0
2019-09-03
R
R 3.6.0 released · 2019-04-26

Package metadata

First published: 2019-09-03
Total releases: 34 / 7 yrs
License: GPL-3 OSI
Minimum R: ≥ 3.5.0
Bundled data: 214 KB / 6 files
Download size: 4.8 MB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Causal Inference Econometrics

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("fixest")

Format

Berge, L., Butts, K., Krantz, S., Lenth, R., & McDermott, G. (2026). fixest: Fast Fixed-Effects Estimations (Version 0.14.2) [Computer software]. https://doi.org/10.32614/CRAN.package.fixest

This is what citation() produces when a package has no citation file of its own. If it prints something else, use that.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for fixest version 0.14.2 [Data set]. HJJB, LLC. Data release v2026-08-18. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-18, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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