Affidavit of Support (Form I-864) Basics

Most family-based immigrants must have a financial sponsor who promises to support them, and that promise is formalized in the Affidavit of Support, Form I-864. This is a legally binding contract between the sponsor and the U.S. government in which the sponsor agrees to maintain the immigrant at a specified income level. The requirement exists to reduce the likelihood that new immigrants will need to rely on certain public benefits.

The affidavit is required in most family-sponsored cases and in some employment-based cases where the petitioner is a relative of the immigrant. It is submitted during the green card process, either with the adjustment of status application or at the consular interview abroad. Without an adequate affidavit, the immigrant is generally found inadmissible on public charge-related financial grounds.

Who can sponsor and what income is needed

The primary sponsor is usually the petitioner, the U.S. citizen or permanent resident who filed the underlying immigrant petition. The sponsor must be at least 18 years old, be a U.S. citizen or lawful permanent resident, and be domiciled in the United States. In some cases the petitioner does not meet the income requirement on their own, and a joint sponsor may step in. A joint sponsor must independently meet all sponsor requirements, including the income threshold, and does not need to be related to the immigrant.

The income requirement is tied to the Federal Poverty Guidelines, which are updated annually. Generally, the sponsor's household income must be at least 125 percent of the poverty guideline for the household size, with a lower threshold for sponsors on active military duty sponsoring a spouse or child. Household size for this purpose includes the sponsor, the sponsor's dependents, the immigrant, and any immigrants previously sponsored who are still under obligation.

If income alone is insufficient, the sponsor may supplement with assets, which are generally counted at a fraction of their net value. The rules for valuing assets and combining household members' income are detailed, and the agency's instructions describe which documentation, such as tax returns and employment letters, is expected.

How long the obligation lasts

The Affidavit of Support creates an enforceable obligation that lasts until one of several terminating events occurs: the immigrant becomes a U.S. citizen, the immigrant earns or is credited with 40 qualifying quarters of work, the immigrant dies, the sponsor dies, or the immigrant permanently leaves the United States and abandons residence. Divorce does not end the obligation, a point that surprises many sponsors.

The sponsored immigrant, and in some cases government agencies that provided certain benefits, can enforce the affidavit in court. Because the commitment is long-term and legally binding, potential sponsors are generally advised to understand the full scope of the undertaking before signing. Immigration and agency guidance on the affidavit have changed over time, so current instructions and poverty guidelines should always be consulted.

Joint sponsors, household members, and enforcement

When the petitioner's income falls short, a joint sponsor can fill the gap, but the joint sponsor must independently meet the full income requirement for their own household plus the immigrant. A joint sponsor's obligation is equal to the primary sponsor's, and the immigrant can enforce it the same way. Household members, such as a working spouse living with the sponsor, can also contribute income through a separate contract, combining earnings to reach the threshold without a full joint sponsor.

The affidavit's enforceability is not theoretical. Sponsored immigrants have sued sponsors for support, and courts have enforced the obligation, calculating support as the difference between the required income level and the immigrant's actual income. Government agencies that provide means-tested benefits to the immigrant can also seek reimbursement from the sponsor. These cases establish that the affidavit is a real contract with real remedies.

Sponsors sometimes ask whether the obligation can be transferred or ended by agreement with the immigrant. It cannot: the contract runs to the government as well as the immigrant, and private agreements do not terminate it. Only the statutory terminating events, citizenship, forty work quarters, death, or abandonment of residence, end the duty. Prospective sponsors are generally advised to treat the signature as a decade-long financial commitment.

The Federal Poverty Guidelines that set the income thresholds are updated annually by the Department of Health and Human Services, and the applicable guidelines are those in effect when the affidavit is filed. The domicile requirement also deserves attention: the sponsor must be domiciled in the United States, though sponsors living abroad temporarily can show they have taken steps to reestablish domicile. Military sponsors on active duty benefit from a lower income threshold when sponsoring a spouse or child, set at 100 percent rather than 125 percent of the guideline, recognizing the realities of military compensation.

In short, the Affidavit of Support is the financial backbone of family immigration sponsorship: a binding promise, measured against annually updated guidelines, that lasts far longer than most people expect.

Related reading: Modifying Child Support in Arizona

This article provides general information only and is not legal advice.

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This article is general information, not legal advice. It does not create an attorney-client relationship.