How much income for an affidavit of support?

Could you please clarify what you mean by "How much income for an affidavit of support?"? Are you asking about the minimum income requirement for a sponsor to meet in order to sign an affidavit of support for an immigrant or non-immigrant visa applicant? If so, the income requirement for an affidavit of support varies depending on the type of visa and the number of individuals being sponsored. For example, the income requirement for sponsoring a family member on an immigrant visa can be quite high, as it is meant to ensure that the sponsor has the financial means to support the immigrant at a level that meets or exceeds the poverty guidelines set by the U.S. government. In general, the income requirement for an affidavit of support is based on the federal poverty guidelines, adjusted for household size and inflation. To determine the specific income requirement for your situation, you would need to consult the relevant regulations or speak with an immigration attorney or other qualified professional.