Affidavit of Support

#What this actually means

The Affidavit of Support is a legally binding contract between the sponsoring family member and the U.S. government. By signing Form I-864, the sponsor promises to financially support the immigrant at 125% of the federal poverty guidelines. It's the government's way of making sure immigrants won't need to rely on public benefits.

And "legally binding" isn't just a figure of speech here. If the sponsored immigrant receives certain means-tested public benefits (like Medicaid, SNAP, or SSI), the government can sue the sponsor to recover those costs. The obligation lasts until the immigrant becomes a U.S. citizen, earns 40 qualifying quarters of work (roughly 10 years), permanently leaves the country, or dies.

#Why it matters

The I-864 is required for virtually every family-based green card case. No Affidavit of Support, no green card — it's that simple. USCIS will deny or delay your case if the form is missing, incomplete, or shows insufficient income.

The income threshold trips people up. It's 125% of the federal poverty guidelines, which change every year and go up with household size. Our I-864 income calculator uses the current figures. "Household size" includes the sponsor, any dependents they already support, and the person they're sponsoring — plus anyone else on their tax return.

If the sponsor's income falls short, there are options. They can count assets (generally at one-fifth of their net value, or one-third when a U.S. citizen petitioner is sponsoring their spouse or an unmarried child aged 18 to 20), or bring in a joint sponsor — someone else willing to take on the same legal obligation. The joint sponsor must be a U.S. citizen or permanent resident and meet the income threshold independently.

#Where this comes up

The I-864 is required in:

• Marriage-based green card cases (both adjustment of status and consular processing)
• Green cards for parents of U.S. citizens
• Green cards for children (IR-2, F2A, F2B categories)
• K-1 fiancé(e) visa cases (filed during the adjustment phase after marriage)
• Most employment-based cases where a family member filed the petition

#Key things to know

• The obligation survives divorce. If you sponsor a spouse for a green card and later divorce, you're still on the hook financially until one of the termination events happens
• Self-employed? You'll need to provide tax returns, and USCIS may scrutinize your income more closely. Make sure your tax returns actually reflect enough income
• You can use assets to bridge an income gap, but only certain assets count — cash, stocks, and real estate are common; retirement accounts generally aren't counted at full value
• A joint sponsor is a full backup. They take on the exact same legal obligation as the primary sponsor — it's not a lighter commitment
• USCIS requires the most recent year's federal tax return plus supporting documents (W-2s, 1099s, etc.). Three years of returns is recommended to show a consistent income pattern