Affidavit of Support Explained (Form I-864)

Published on: November 2, 2025

When sponsoring someone for a Green Card, USCIS requires proof that the immigrant will not become a public charge. The Affidavit of Support (Form I-864) is a legally binding promise showing you, the sponsor, have enough income or assets to support the intending immigrant.

💼 What Is the Affidavit of Support?

The Affidavit of Support is a contract between the sponsor and the U.S. government. By signing it, the sponsor agrees to provide financial support if necessary until the immigrant becomes a U.S. citizen or earns enough work credits (usually 10 years).

Failure to support the immigrant can make the sponsor legally responsible for certain public benefits the immigrant receives.

👥 Who Must File Form I-864?

Most family-based immigrants (spouses, parents, children, or siblings of U.S. citizens and green card holders) must have a sponsor.

The petitioner is always required to file Form I-864.
If the petitioner’s income is too low, a joint sponsor can also file one.

Certain cases use Form I-134 instead — mainly for temporary visas like the K-1 fiancé visa or humanitarian programs.

💰 Income Requirements

Sponsors must show income at least 125% of the Federal Poverty Guidelines for their household size (100% for active-duty military sponsoring a spouse or child).
You can include:

Your own income
Your spouse’s income (if living together and filing jointly)
Certain assets like savings, real estate, or stocks

📄 Supporting Documents

To prove income, attach:

Recent tax returns (most recent year)
W-2s or 1099s
Pay stubs or employment letters
Bank statements or property appraisals if using assets

Make sure all documents are clear, consistent, and match your claimed income.

✅ Tips for a Strong I-864

Always use the latest version of the form.
Include every page, even blank ones.
Double-check that signatures and household size match your tax return.
If your income is close to the limit, add joint sponsor evidence or assets.