Is there an income requirement for Dutch permanent residence?

To obtain permanent residence you must show that you have sufficient long-term means of support. The IND looks for income that is independent (your own), sustainable (likely to continue), and sufficient (at least the applicable required amount).

The required amounts are updated periodically and vary by situation. Self-employment income and certain benefits are treated differently, so if your income is irregular it is worth confirming in advance whether it will be accepted as sustainable and sufficient.