If you recently filled out the Free Application for Federal Student Aid (FAFSA), you will see a specific number at the end of your application. This number is the Student Aid Index (SAI).
If you have older siblings who went to college, your parents might talk about the Expected Family Contribution (EFC). The government completely replaced the EFC with the SAI starting with the 2024-25 school year.
At FAFS Info, we want to help you understand your college costs without the confusing terms. This guide will explain exactly what the Student Aid Index is, how the government calculates it, and how colleges use it to determine your financial aid.
What is the Student Aid Index (SAI)?
The Student Aid Index (SAI) is an eligibility index for student aid. Your college financial aid office uses this specific number to calculate how much federal and state aid you should receive.
The SAI is not a bill, and it is not a determination of what an applicant will pay. The old EFC name misled families into thinking it was the exact amount they had to pay out of pocket, which was not true.
When you submit your FAFSA, the federal government runs your family’s tax data through a math formula. The result is your SAI. The numbers range from -1,500 to 999,999.
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A low or negative SAI (like -1,500 or 0): This means you have significant financial need. You will likely qualify for the most generous need-based aid, like Pell Grants and subsidized loans.
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A high SAI (like 50,000): This means the government estimates that you have more ability to pay for college. Students with higher SAIs are less likely to qualify for need-based federal aid.
SAI vs. EFC: What Changed?
The FAFSA Simplification Act changed the form and the math formula drastically. The government reduced the overall FAFSA application from 108 questions down to just 36 questions.
Here are the biggest differences between the old EFC and the new SAI:
| Feature | Old EFC System | New SAI System |
| Lowest Possible Score | The EFC did not calculate amounts less than zero. | The SAI allows for a negative number as low as -1,500. |
| Sibling Discount | The formula gave an advantage to families with several college students. |
The number of family members currently enrolled in college no longer reduces the index. |
| Tax Allowances | Included an allowance for state and local taxes. | The allowance for state and local taxes was eliminated. |
| Income Protection | Sheltered a smaller amount of parental income. | Increases the Income Protection Allowance (IPA) to shelter a certain amount of parental income. |
How is the Student Aid Index Calculated?
You do not have to calculate the SAI yourself. The FAFSA system does the math automatically. Most of the time, your financial details are pulled directly from the IRS into the FAFSA. The form uses tax returns from two years before the award year, which is known as the “prior-prior year”. For example, the 2027-28 FAFSA uses your 2025 tax information.
The formula looks at four main factors to build your index number:
1. Parents’ Income
The formula considers 22% to 47% of the parents’ modified adjusted gross income (MAGI) that falls above a protected amount. The exact protection amount is based on factors like household size.
2. Parents’ Assets
A maximum of 5.64% of the parents’ assets are considered in the calculation. This includes bank accounts, investments, and parent-owned 529 college savings accounts. However, the government excludes the parents’ primary residence and qualified retirement accounts, such as 401(k)s and IRAs.
3. Student’s Income
Students are expected to contribute a larger percentage of their own money. The formula considers 50% of the student’s income that falls above a protected amount. For the 2025-2026 school year, the protected amount for student income is $11,140.
(Note: Independent students do not report parental income or assets. Learn more in our guide on FAFSA independent student requirements 2026-2027.)
4. Student’s Assets
The formula considers 20% of the student’s assets. This includes bank accounts, investments, and UTMAs (Uniform Transfers to Minors Act accounts). Student-owned retirement accounts, such as Roth IRAs, are excluded.
A Note on Grandparents: The assets and income of grandparents are not included in the SAI calculation. If grandparents own a 529 account, those distributions are no longer reported as the student’s income.
What Does a Negative SAI (-1,500) Mean?
Under the old system, the lowest score you could get was a zero. Now, the SAI can drop to -1,500.
Many students panic when they see a negative number. Do not worry. A negative SAI is actually a great thing for financial aid. It helps identify students with the greatest financial need.
If your SAI is negative or zero, you are likely eligible for the maximum Pell Grant award.
How Colleges Use Your SAI (The Formula)
Once the government calculates your SAI, they send that number to the colleges you listed on your FAFSA. The college then uses a simple math equation to build your financial aid package.
Cost of Attendance (COA) – Student Aid Index (SAI) – Other Financial Assistance (OFA) = Financial Need
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Cost of Attendance (COA): This includes tuition, fees, housing, meals, books, transportation, and other personal expenses.
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Other Financial Assistance (OFA): This is what the student will receive from other outside sources.
Financial Need Example
Let’s say your school’s annual cost of attendance is $40,000. Your FAFSA calculated an SAI of $5,000.
$40,000 – 5,000 = $35,000
In this example, your financial need would be $35,000. The college will try to offer you a mix of grants, scholarships, work-study jobs, and loans to help bridge that difference. However, colleges are not always required to meet 100% of your financial need.
To break down each section of your award offer, read our guide on the anatomy of a financial aid award letter.
How to Find and Appeal Your SAI Number
You will receive your SAI once the U.S. Department of Education processes your FAFSA. Online forms are usually processed in one to three business days.
To find your number:
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Login to your studentaid.gov account.
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View the FAFSA Submission Summary.
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Your SAI is located at the top of the first page.
You cannot directly challenge your SAI with the federal government. However, you can contact the financial aid offices at your colleges and submit a financial aid appeal letter. You can explain extenuating circumstances, such as a job loss, significant medical expenses, divorce, or the death of a parent. If you need help reviewing your initial package before appealing, check out our guide on how to read a financial aid offer letter.
Frequently Asked Questions (FAQs)
1. How do I find my Student Aid Index? After you submit your FAFSA, you will receive a document called the FAFSA Submission Summary. Your official SAI is located at the top of the first page of this summary.
2. Does a low SAI mean college will be completely free? No. A low SAI means you have significant financial need, but colleges are not always required to meet 100% of it. Many schools offer a mix of grants, loans, and work-study to bridge the difference between what you can afford and their total cost.
3. Can I get an estimate of my SAI before filing the FAFSA? Yes. You can use the Federal Student Aid Estimator, a free tool provided by the U.S. Department of Education. It asks basic questions about your income and household size to give you an early estimate.
4. Why is my SAI higher than my older sibling’s EFC was? The new formula removed the sibling discount. The number of siblings you have in college no longer reduces your SAI. This shift from the old system causes many families with multiple children to see a higher index number.
5. Does the FAFSA look at my current income?
No. The FAFSA uses tax returns from two years before the award year, which is known as the prior-prior year. For example, the 2027-28 FAFSA uses your 2025 tax information.