Field help:
Income from a mini-job (taxed at a flat rate)
Please enter here all income from a mini-job if it was taxed at a flat rate.
You do not have to declare the income from a mini-job taxed at a flat rate in your tax return. However, the income received is needed to determine the disposable income.
If your employer records the mini-job on an employment tax card, you do not have to declare it here.