| Value | Category |
|---|---|
| -2 | na |
| -1 | missing |
| 0 | no income |
| 1 | collected net of tax on income at source and social contribution+nc |
| 2 | collected net of tax on income at source+nc |
| 3 | collected net of tax on social contributions+nc |
| 4 | collected gross |
| 5 | unknown |
| 6 | mix (parts of the component collected according to different ways) |