title: Why are four decimal places suggested when using decimal to represent money?
body: <p>When looking for the difference between SQL data types money and decimal I came across several posts that suggested that <code>decimal(19,4)</code> was best used to represent currency in SQL Server</p>
  
  <p>Why are four places to the right of the decimal needed? I would think that only two places are required as money is represented as </p>
  
  <pre><code>$23.47
  $5.00
  $4200.50
  </code></pre>
  
  <p>I don't recall ever seeing money represented as </p>
  
  <pre><code>$23.4700
  $5.0000
  $4200.5000
  </code></pre>