Use printf in template

web/budget.html

@@ -19,7 +19,9 @@
         <td>
             <a href="transaction/{{.ID}}">{{.Memo}}</a>
         </td>
-        <td style="text-align: right;{{if .GetPositive()}}{{else}}color: red;{{end}}">{{.GetAmount}}</td>
+        <td style="text-align: right;{{if .GetPositive}}{{else}}color: red;{{end}}">
+            {{printf "%.2f" .GetAmount}}
+        </td>
     </tr>
     {{end}}
 </table>