For Request for a Fee Reduction, you can now request a reduced fee on Form N-400. To qualify for the reduced fee, your household income must be less than our equal to 400 percent of the Federal Poverty Guidelines, at the time of filing, based on your household size. Parts 11, 12, ...
for naturalization at the time of filing the Form N-400. For example, an applicant filing under section 319(a) of the INA must meet all other requirements as the spouse of a U.S. citizen at the time of filing. Your application must be accompanied by the appropriate filing fee. ...