The sponsor needs to show an income of at least 125% of the Federal Poverty Guidelines for their household size, typically through tax returns and recent pay stubs.

A joint sponsor can be used if the primary sponsor doesn't meet the income requirement, and the joint sponsor's income will be considered for the Green Card application.

Assets like savings, stocks, or property can also be used to supplement income if the sponsor doesn't meet the required income threshold, with specific requirements for valuing these assets.