LaTeX Business Documents: Letters, Reports, and Professional Writing

\documentclass[12pt]{letter}

\signature{Your Name}
\address{Your Address \\ City, State ZIP}

\begin{document}

\begin{letter}{Recipient Name \\ Address \\ City, State ZIP}

\opening{Dear Recipient Name,}

Body of the letter goes here. You can have multiple
paragraphs and they'll be properly formatted.

\closing{Sincerely,}

\encl{Enclosure 1 \\ Enclosure 2}
\cc{Other Recipients}

\end{letter}

\end{document}

\usepackage[paper=letterpaper,margin=1in]{geometry}
\usepackage{fontspec}

\begin{letter}{Recipient Name}

\thispagestyle{firstpage}
\vspace*{2em}

\textbf{Date:} \today

\textbf{To:} Recipient Name \\
Address

\vspace{1em}

\textbf{Re: Subject Line}

\bigskip

Letter content here...

\bigskip

Sincerely, \\[2em]
Your Name

\end{letter}

\documentclass[12pt]{report}

\title{Quarterly Business Report}
\subtitle{Q1 2026 Analysis}
\author{Author Name}
\date{\today}

\begin{document}

\begin{titlepage}
\begin{center}
\Large\textbf{\thecompany}\\[2em]
\LARGE\textbf{\@title}\\[1em]
\textbf{Prepared by: \@author}\\[1em]
\textbf{Date: \@date}
\end{center}
\end{titlepage}

\begin{abstract}
Executive summary of the report...
\end{abstract}

\chapter{Introduction}
\chapter{Analysis}
\chapter{Recommendations}
\chapter{Conclusion}

\end{document}

\documentclass[12pt]{article}
\usepackage[margin=1in]{geometry}

\begin{document}

\begin{center}
\textbf{MEMORANDUM}
\end{center}

\bigskip

\begin{tabular}{ll}
\textbf{TO:} & Name, Title \\
\textbf{FROM:} & Your Name, Your Title \\
\textbf{DATE:} & \today \\
\textbf{RE:} & Subject Line \\
\end{tabular}

\bigskip
\hrule
\bigskip

Memo content here...

\end{document}

\documentclass[12pt]{letter}
\usepackage[paper=letterpaper,margin=1in]{geometry}

\signature{Your Company}
\address{Your Company \\ Address}

\begin{document}

\begin{letter}{Client Name \\ Address}

\opening{Invoice \#2026-001}

Dear Client,

\bigskip

\textbf{Services Provided:}

\begin{tabular}{lrr}
Description & Hours & Amount \\
\hline
Consulting Services & 10 & \$1,500.00 \\
Development Work & 20 & \$4,000.00 \\
\hline
& \textbf{Total:} & \textbf{\$5,500.00} \\
\end{tabular}

\bigskip

Payment is due within 30 days.

\closing{Payment can be sent to:}

\end{letter}

\end{document}

% company.sty
\usepackage{geometry}
\usepackage{fontspec}

% Company colors
\definecolor{companyblue}{RGB}{0,51,102}
\definecolor{companygray}{RGB}{128,128,128}

% Custom commands
\newcommand{\companyname}{Company Name}
\newcommand{\tagline}{Your Tagline Here}

% Header
\def\header{
\begin{center}
{\color{companyblue}\Large\textbf{\companyname}}\\
\textit{\tagline}
\end{center}
\hrule
}