\documentclass{scrartcl}
\usepackage[latin1]{inputenc}
\usepackage{tabularx}
\usepackage[letterpaper,top=2cm,bottom=-3cm,left=1.1cm,right=1.5cm]{geometry}
\usepackage{graphicx}
\setlength{\parindent}{0pt}

\begin{document}

\pagestyle{myheadings}
\thispagestyle{empty}

\fontfamily{cmss}\fontsize{10pt}{12pt}\selectfont

<%include letterhead.tex%>

\centerline{\textbf{A R} \hspace{0.3cm} \textbf{T R A N S A C T I O N}}

\vspace*{0.5cm}

\parbox[t]{.5\textwidth}{
<%name%>

<%address1%>

<%address2%>

<%city%>
<%if state%>
\hspace{-0.1cm}, <%state%>
<%end state%>
<%zipcode%>

<%country%>

\vspace{0.3cm}

<%if contact%>
<%contact%>
\vspace{0.2cm}
<%end contact%>

<%if customerphone%>
Tel: <%customerphone%>
<%end customerphone%>

<%if customerfax%>
Fax: <%customerfax%>
<%end customerfax%>

<%email%>

<%if customertaxnumber%>
Tax Number: <%customertaxnumber%>
<%end customertaxnumber%>
}
\hfill
\begin{tabular}[t]{ll}
  \textbf{Invoice \#} & <%invnumber%> \\
  \textbf{Date} & <%invdate%> \\
  \textbf{Due} & <%duedate%> \\
  <%if ponumber%>
    \textbf{PO \#} & <%ponumber%> \\
  <%end ponumber%>
  <%if ordnumber%>
    \textbf{Order \#} & <%ordnumber%> \\
  <%end ordnumber%>
  \textbf{Employee} & <%employee%> \\
\end{tabular}

\vspace{1cm}

\begin{tabularx}{\textwidth}[t]{@{}llrX@{\hspace{1cm}}l@{}}
<%foreach amount%>
  <%accno%> & <%account%> & <%amount%> & <%description%> & <%projectnumber%> \\
<%end amount%>

  \multicolumn{2}{r}{\textbf{Subtotal}} & <%subtotal%> & \\
<%foreach tax%>
  \multicolumn{2}{r}{\textbf{<%taxdescription%> @ <%taxrate%> \%}} & <%tax%> & \\
<%end tax%>

  \multicolumn{2}{r}{\textbf{Total}} & <%invtotal%> & \\
  
\end{tabularx}

\vspace{0.3cm}

<%text_amount%> ***** <%decimal%>/100 <%currency%>

<%if notes%>
\vspace{0.3cm}
<%notes%>
<%end notes%>

\vspace{0.3cm}

<%if paid_1%>
\begin{tabular}{@{}lllr@{}}
  \multicolumn{5}{c}{\textbf{Payments}} \\
  \hline
  \textbf{Date} & & \textbf{Source} & \textbf{Amount} \\
<%end paid_1%>
<%foreach payment%>
  <%paymentdate%> & <%paymentaccount%> & <%paymentsource%> & <%payment%> \\
<%end payment%>
<%if paid_1%>
\end{tabular}
<%end paid_1%>

\vspace{0.5cm}

<%foreach tax%>
\textbf{\scriptsize <%taxdescription%> Registration <%taxnumber%>} \\
<%end tax%>
  
\end{document}