An Invoice (`isodoc.cls`)

\documentclass{isodoc}

\setupdocument
{
  language={en-GB},
  company={University of Somewhere},
  who={Mr Big Head},
  street={Academic Lane},
  city={Some City},
  zip={AB3 4YZ},
  country={United Kingdom},
  countrycode={GB},
  areacode={44},
  cityzip,
  date=2014-03-01,
  subject=Sample Project,
  currency={\pounds}
}

\begin{document}
\invoice
[
  ourref=1234,
  to={Miss Polly Parrot\\42 The Lane\\Some Town\\Noshire AB1 2XY}
]
{%
  \itable
  {%
    \iitem{Proof-reading}{300.00}
    \iitem{Train Fare}{43.95}
    \itotal{342.95}
  }
  \\[3ex]\accountdata
}
\end{document}

Download isodoc-sample2.tex or isodoc-sample2.pdf.

An Invoice (isodoc.cls)

An Invoice (`isodoc.cls`)