USCIS fee waiver N-400

How many persons are in your family/household? If your family/household annual income is less than or equal to this amount*, you are eligible for a fee waiver.
1 $17,820
2 $24,030
3 $30,240
4 $36,450
5 $42,660
6 $48,870
7 $55,095
8 $61,335
For families/households with more than 8 persons, add $6,240 for each additional person.