What Is Form I-864, the Affidavit of Support?

Quick answer: Form I-864, the Affidavit of Support, is a legally binding contract in which a sponsor promises to financially support an immigrant relative and reimburse the U.S. government for certain means-tested benefits the immigrant might use. It's required for most family-based green card cases and some employment-based ones, and the sponsor must show income at or above 125% of the federal poverty guideline for their household size, according to U.S. Citizenship and Immigration Services. The obligation doesn't end when the green card is approved — it lasts until the immigrant becomes a U.S. citizen, earns 40 work credits under the Social Security Administration, leaves the country permanently, or dies.

Key takeaways

• Form I-864 creates a contract enforceable in court — the sponsor can be sued by the immigrant, by a government agency, or by any agency that paid the immigrant means-tested benefits, per USCIS guidance.
• The sponsor must meet 125% of the federal poverty guideline for their household size, or 100% if the sponsor is active-duty military sponsoring a spouse or child, according to USCIS.
• A joint sponsor can step in if the petitioning relative doesn't earn enough, but the joint sponsor takes on the full legal obligation too — not a partial one.
• The support duty ends only at citizenship, 40 qualifying work credits, permanent departure from the U.S., or death — divorce does not cancel it.

Who Actually Has to File Form I-864?

Any U.S. citizen or lawful permanent resident who files a family-based petition, like Form I-130, generally must also submit Form I-864 for the relative they're sponsoring. This includes spouses, parents, children, and siblings being petitioned for a green card. Some employment-based green card cases require it too, specifically when a relative owns 5% or more of the sponsoring company or filed the underlying petition.

If you've already gone through the I-130 stage, you may have seen this requirement mentioned as part of what comes next — we cover that transition in more detail in What Happens After You File Form I-130. The affidavit of support typically gets filed alongside Form I-485 for adjustment of status, or sent to the National Visa Center for consular processing cases.

A few groups are exempt from filing I-864 entirely:

• Self-petitioning widows or widowers of U.S. citizens
• Battered spouses or children filing under the Violence Against Women Act (VAWA)
• Immigrants who have already earned 40 quarters of work credit through the Social Security Administration
• Certain other narrow categories USCIS identifies on the form instructions

If you're not sure which category applies, USCIS's own instructions for Form I-864 spell out every exemption in detail, and it's worth reading them directly before assuming you qualify.

What Financial Requirement Does the Sponsor Have to Meet?

The sponsor's household income must be at or above 125% of the federal poverty guideline for their household size, based on the guidelines the U.S. Department of Health and Human Services publishes annually. This isn't a one-time snapshot — USCIS looks at the sponsor's most recent federal tax return, along with current income documentation like pay stubs or an employer letter.

Here's roughly how the math works, using illustrative numbers to show the logic (always confirm the actual current guideline amount on the USCIS website before filing):

*Figures are illustrative only — the exact dollar thresholds change every year and vary by whether the sponsor lives in Alaska, Hawaii, or the other 48 states. Confirm the current-year numbers on the USCIS Form I-864 instructions page before you file.

"Household size" isn't just the sponsor and the immigrant — it includes the sponsor's spouse, dependents, anyone else they're already sponsoring under a separate I-864, and the immigrant's own dependents moving with them. That number can climb faster than people expect, which is often why a sponsor who looks financially comfortable on paper still falls short of the threshold.

Don't skip this: if your income alone doesn't clear 125% of the guideline, you have options — adding a joint sponsor, counting significant assets, or including a household member's income with a separate form — but you cannot simply submit I-864 anyway and hope it's approved. USCIS will issue a Request for Evidence or deny the case outright if the support obligation isn't clearly met.

What If the Petitioner Doesn't Earn Enough on Their Own?

They don't have to carry the whole obligation alone — a joint sponsor can fill the gap, but that person takes on the full legal responsibility, not just a portion of it. A joint sponsor must be a U.S. citizen or lawful permanent resident, at least 18 years old, and meet the 125% income threshold independently, using their own household size and income.

There's no limit of one joint sponsor per case, but each joint sponsor must independently qualify — you can't add two people's incomes together to clear the bar. A few other ways to strengthen a weak application:

• Household member's income: A relative living with the sponsor can combine income using Form I-864A, but they must also agree to the same legal obligation.
• Assets instead of income: Significant liquid assets (cash, stocks, real estate equity) can sometimes substitute for income, though USCIS typically requires assets worth several times the income shortfall.
• Active-duty military exception: If the sponsor is on active duty and sponsoring their own spouse or child, the required threshold drops to 100% of the poverty guideline instead of 125%, according to USCIS.

Choosing a joint sponsor is not a decision to make lightly. It's a real financial commitment, not a formality, and family members sometimes agree to it without fully understanding what they're signing up for.

How Long Does the Sponsor's Obligation Actually Last?

The obligation continues until one of four specific things happens — it does not end just because the marriage ends or the relationship sours. Per USCIS, the affidavit of support terminates when the sponsored immigrant:

• Becomes a U.S. citizen
• Earns 40 qualifying quarters of work (about 10 years) as tracked by the Social Security Administration
• Permanently leaves the United States and gives up their green card
• Dies

Divorce is the one that surprises people most. If a sponsor divorces the immigrant they sponsored, the financial obligation under I-864 stays in force until one of the four conditions above is met. USCIS and federal courts have consistently treated this as a separate contractual duty from the marriage itself — ending the marriage doesn't end the paperwork.

This is also why the government, or any means-tested benefit-granting agency, can sue a sponsor directly to recover costs if the sponsored immigrant receives benefits like Supplemental Security Income or Temporary Assistance for Needy Families. It's a genuine legal exposure, not just a box to check during the green card process.

What Documents Does the Sponsor Need to Gather?

Most of the delay in filing I-864 comes from tracking down paperwork, not from the form itself, which is a good reason to start collecting documents early. A typical sponsor's packet includes:

• Complete a federal tax return transcript or copy for the most recent tax year, including all W-2s or 1099s
• Gather recent pay stubs (usually the last several months) as proof of current income
• Request an employment verification letter stating job title, salary, and how long you've worked there
• Calculate your exact household size, including dependents and anyone else you already sponsor
• Identify a joint sponsor early if your income alone won't clear the threshold
• Collect proof of joint sponsor's income and immigration or citizenship status, if applicable
• Confirm the current federal poverty guidelines for your state and household size on the USCIS website
• Sign and date the form correctly — an unsigned I-864 is one of the most common reasons for rejection

Because adjustment of status cases bundle I-864 together with several other forms, it helps to see the whole document set at once rather than tackling I-864 in isolation. Our guide on what an immigration filing checklist actually covers walks through how these pieces fit together.

Consular Processing vs. Adjustment of Status: Does I-864 Work Differently?

The form itself doesn't change, but where and how it's submitted does. If the immigrant is adjusting status from inside the U.S., I-864 goes to USCIS along with Form I-485. If the immigrant is completing consular processing abroad, the affidavit goes through the National Visa Center before the visa interview, and the National Visa Center will flag any income shortfall before the case ever reaches the embassy.

We go deeper on how that overseas process works, including what documents the consulate expects, in Consular Processing Explained: What Happens Outside the USA. Either path, the underlying financial obligation on the sponsor is identical — the paperwork just travels through a different office first.

Staying on Top of a Case That Depends on One Person's Finances

An affidavit of support case often has more moving parts than a straightforward filing — tax transcripts, a joint sponsor's documents, income verification letters, and the standard adjustment-of-status paperwork all have to land at the right office at the right time. Missing a Request for Evidence deadline because a document got lost in email is a common, avoidable setback.

The MyCheck app tracks your USCIS case status in real time once you've filed, so you're not refreshing the USCIS website wondering if a Request for Evidence has been issued. It also generates an AI-powered checklist specific to your visa type, which is useful when you're juggling I-864 alongside I-485 or I-130 paperwork and want to make sure nothing falls through the cracks.

If you're the sponsor rather than the immigrant, it's worth remembering this form is a long-term commitment, not a formality you complete and forget. Understanding exactly when the obligation ends — and what triggers it — protects both the sponsor and the person they're supporting.

Ready to keep your case organized from filing to approval? Download MyCheck to track your status, get a personalized checklist, and never miss a USCIS deadline.

Related articles

• What Happens After You File Form I-130
• Consular Processing Explained: What Happens Outside the USA
• What Is an Immigration Filing Checklist and Why It Matters