Fast and user-friendly estimation of econometric models with multiple fixed-effects. Includes ordinary least squares (OLS), generalized linear models (GLM) 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 Berge (2018) <https://github.com/lrberge/fixest/blob/master/_DOCS/FENmlm_paper.pdf>. Further provides tools to export and view the results of several estimations with intuitive design to cluster the standard-errors.
| Version: | 0.13.2 | 
| Depends: | R (≥ 3.5.0) | 
| Imports: | stats, graphics, grDevices, tools, utils, methods, numDeriv, nlme, sandwich, Rcpp (≥ 1.0.5), dreamerr (≥ 1.4.0), stringmagic (≥ 1.2.0) | 
| LinkingTo: | Rcpp | 
| Suggests: | knitr, rmarkdown, data.table, plm, MASS, pander, ggplot2, lfe, tinytex, pdftools, emmeans, estimability, AER, Matrix | 
| Published: | 2025-09-08 | 
| DOI: | 10.32614/CRAN.package.fixest | 
| Author: | Laurent Berge [aut, cre],
  Sebastian Krantz [ctb],
  Grant McDermott | 
| Maintainer: | Laurent Berge <laurent.berge at u-bordeaux.fr> | 
| BugReports: | https://github.com/lrberge/fixest/issues | 
| License: | GPL-3 | 
| URL: | https://lrberge.github.io/fixest/, https://github.com/lrberge/fixest | 
| NeedsCompilation: | yes | 
| Citation: | fixest citation info | 
| Materials: | README, NEWS | 
| In views: | CausalInference, Econometrics | 
| CRAN checks: | fixest results | 
| Reference manual: | fixest.html , fixest.pdf | 
| Vignettes: | On collinearity (source, R code) Exporting estimation tables (source, R code) fixest introduction (source, R code) Multiple estimations (source, R code) On standard-errors (source, R code) | 
| Package source: | fixest_0.13.2.tar.gz | 
| Windows binaries: | r-devel: fixest_0.13.2.zip, r-release: fixest_0.13.2.zip, r-oldrel: fixest_0.13.2.zip | 
| macOS binaries: | r-release (arm64): fixest_0.13.2.tgz, r-oldrel (arm64): fixest_0.13.2.tgz, r-release (x86_64): fixest_0.13.2.tgz, r-oldrel (x86_64): fixest_0.13.2.tgz | 
| Old sources: | fixest archive | 
| Reverse depends: | did2s, didimputation, ggfixest | 
| Reverse imports: | conleyreg, DIDmultiplegt, effClust, etwfe, fect, fixes, fwlplot, inters, ivDiag, panelsummary, partialling.out, penppml, speccurvieR, tradepolicy, TwoWayFEWeights | 
| Reverse suggests: | broom, broom.helpers, clarify, clubSandwich, collapse, DAGassist, DiDforBigData, fplot, getspanel, ggeffects, insight, marginaleffects, modelsummary, multcomp, parameters, performance, plm, RoBMA, sensemakr, subincomeR, summclust, unvs.med | 
| Reverse enhances: | texreg | 
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