I-864 Affidavit of Support - Marriage Green Card Guide (2026 Edition)

Applying for a marriage green card involves a lot of paperwork, but few forms cause as much anxiety as the financial documents. You want to bring your spouse to the United States, or help them stay here, but the government wants to make sure they won’t rely on public welfare.

This is where the I-864 Affidavit of Support comes in.

It is arguably the most scrutinized form in the entire green card application package. One math error or a missing tax document can delay your case by months. But don’t worry—while the stakes are high, the rules are clear if you take them step-by-step.

In this comprehensive guide, we will break down exactly what the I-864 Affidavit of Support is, the 2026 income requirements you need to meet, and how to fill out the form without making common mistakes.

What is the I-864 Affidavit of Support?

The I-864 Affidavit of Support is a contract between the sponsor (the U.S. citizen or green card holder) and the U.S. government.

By signing this form, the sponsor agrees to use their financial resources to support the intending immigrant. The goal is to ensure the immigrant does not need to rely on means-tested government benefits (like food stamps or Medicaid).

If the immigrant does receive certain government benefits, the government can sue the sponsor to get that money back. This is why the form is taken so seriously.

Who Must File the I-864?

In a marriage-based green card case, the petitioner (the U.S. spouse) must always submit an I-864. This is true even if the petitioner is unemployed or has zero income. In that case, the petitioner still files the form but will likely need a Joint Sponsor (which we will cover later).

Marriage Green Card Process - Complete 2026 Guide

2026 Income Requirements: The “125% Rule”

The most common question we get at Greenbroad is: “How much money do I need to make?”

To qualify as a sponsor, your household income must generally be at least 125% of the Federal Poverty Guidelines for your household size.

(Note: If you are an active-duty member of the U.S. Armed Forces petitioning for your spouse, you only need to meet 100% of the guidelines.)

Calculating Household Size

Before looking at the dollar amount, you must calculate your household size correctly. This includes:

1. Yourself (the sponsor).
2. Your spouse (the immigrant).
3. Any dependent children (under 21 and unmarried).
4. Anyone else listed as a dependent on your most recent tax return.
5. Anyone else you have previously sponsored using an I-864 whom you are still obligated to support.

Scenario:

Mark lives alone. He marries Ana, the intending immigrant. Mark has no children. Mark’s household size is 2 (Mark + Ana).

Scenario:

Sarah has two children from a previous marriage who live with her. She marries Diego. Sarah’s household size is 4 (Sarah + Diego + 2 children).

2026 Minimum Income Estimates

While USCIS updates these numbers annually (usually in early spring), here is a general breakdown based on the 2026 Federal Poverty Guidelines. Please note: These figures apply to the 48 contiguous states. Alaska and Hawaii have higher thresholds.

Always check the official USCIS I-864P Page for the exact current figures before filing.

What If I Don’t Make Enough Money?

If your current annual income falls below the requirement for the I-864 Affidavit of Support, don’t panic. You have two main options to bridge the gap.

Option 1: Using Assets

You can use the value of your assets (savings, stocks, bonds, property) to make up the difference.

For marriage-based cases, your assets must equal three times (3x) the difference between your income and the requirement.

Example:

• Requirement: $27,100
• Your Income: $22,100
• Shortfall: $5,000
• Assets Needed: $15,000 ($5,000 x 3)

Option 2: The Joint Sponsor (Co-Sponsor)

This is the most common solution. A Joint Sponsor is a U.S. citizen or green card holder who agrees to accept full financial responsibility for the immigrant, alongside the main sponsor.

The Joint Sponsor must:

• Be a U.S. citizen or Green Card holder.
• Live in the United States.
• Make enough money (125% of poverty guidelines) for their own household size PLUS the immigrant.
• File their own separate I-864 form.

Note: A joint sponsor does not need to be related to you. It can be a friend, family member, or employer.

Joint Sponsor Requirements - Who Can Be One

How to Fill I-864: A Step-by-Step Guide

The I-864 form is long and detailed. Here is a simplified walkthrough of the most critical sections to help you understand what is required.

Part 1: Basis for Filing

This section simply asks why you are filing. In 99% of marriage cases, you will check box 1.a: “I am the petitioner. I am filing for… my spouse.”

Part 2 & 3: Information About You and the Immigrant

Basic biographical data. Ensure names match passports and birth certificates exactly.

Part 5: Sponsor’s Household Size

This is where most people make mistakes. The form asks you to enter numbers.

• Item 1: Provide the number you are sponsoring (usually 1).
• Item 2: Yourself (automatically 1).
• Item 3: If you are married, enter 1 (unless you are sponsoring your spouse, in which case they are already counted in Item 1. Do not double count!).

Tip: The form has a “Total Household Size” box at the bottom. Ensure this number matches the reality of your living situation and tax returns.

Part 6: Sponsor’s Employment and Income

You must list your current employer and your “Current Individual Annual Income.”

• This is what you expect to earn this year (2026).
• If you are employed, you can estimate this by looking at your pay stubs (Hourly wage x hours worked x 52 weeks).
• If you are self-employed, use your most recent net profit estimate.

Federal Income Tax Information

You must provide information from your federal tax returns for the last three years (at minimum, the most recent year is required).

• Important: You must use the “Total Income” figure from your IRS tax return (e.g., Line 9 on the 2025 Form 1040), not your Gross Income or W-2 wages.

Required Documents Checklist

The I-864 Affidavit of Support is just a piece of paper without evidence to back it up. You must include the following supporting documents in your application package:

1. Proof of Citizenship/Status: Copy of the sponsor’s U.S. passport, birth certificate, or green card.
2. Federal Tax Transcript: The most recent year is mandatory. We strongly recommend downloading the official “Tax Return Transcript” from the IRS website rather than submitting photocopies of your 1040 forms. Transcripts are preferred by USCIS.
3. W-2s and 1099s: For the most recent tax year.
4. Proof of Current Income:
   • Employed: Pay stubs from the last 6 months and an employment verification letter.
   • Self-Employed: Business bank statements, business license, and estimated tax payments.
5. Asset Documentation (If applicable): Bank statements (12 months), property deeds, or stock portfolio summaries.

The Ultimate Marriage Green Card Documents Checklist (2026 Update)

Common Mistakes to Avoid

The I-864 is a minefield for errors. Here are the top reasons USCIS issues a “Request for Evidence” (RFE) for this form:

• Using Gross Income instead of Total Income: When copying numbers from your tax return, ensure you use the “Total Income” line (often Line 9) and not your W-2 wages. Deductions change your qualifying income!
• Counting Household Size Incorrectly: Do not count the intending immigrant twice.
• Missing Pages: The I-864 is a long form. Even if a page is blank, you must submit every single page.
• Electronic Signatures: While USCIS is modernizing, they are strict about signatures. Unless you are filing online through specific portals, it is safest to sign the form in black ink by hand.
• Forgetting the Joint Sponsor’s Proof: If you use a joint sponsor, they need to prove they are a U.S. citizen or resident, just like the main sponsor.

Conclusion: Get Your I-864 Right the First Time

The I-864 Affidavit of Support is the financial backbone of your marriage green card application. It requires precision, honesty, and a clear understanding of your financial history. While the 2026 guidelines may seem strict, they are designed to provide security for the immigrant spouse.

Remember:

1. Check your household size carefully.
2. Use the correct line from your tax return.
3. Don’t hesitate to use a Joint Sponsor if your income is on the borderline.

This form is the number one reason for application delays, but it doesn’t have to be a stumbling block for you.

Let Greenbroad Handle the Paperwork

You focus on your marriage; let us focus on the math.

For a flat fee of $749, Greenbroad provides a complete marriage green card service. We don’t just give you the forms; we guide you through them.

• Smart Eligibility Check: We flag income issues before you file.
• Joint Sponsor Support: We help you determine if you need a co-sponsor and prepare their forms too.
• Document Review: We ensure you have the right tax transcripts and evidence to avoid RFEs.

Ready to start your new life in the U.S. without the paperwork headache?

Get Started with Greenbroad Today

Disclaimer: I am not an attorney, and this article is not legal advice. Immigration laws and income guidelines change frequently. If you have complex financial situations, criminal history, or previous immigration violations, please consult with a qualified immigration attorney.