Your FAFSA gives you one number, and it can be hard to tell what it does. That number is your Student Aid Index, or SAI.
This guide explains it in plain words, using Federal Student Aid’s own pages, so you know how schools read it and where to find yours.
Federal Student Aid says the SAI is an eligibility index number that a college’s or career school’s financial aid office uses to determine how much federal student aid you would receive if you attended the school. The number comes from the information you, and any contributors, provide on the FAFSA form. How aid is calculated (StudentAid.gov)
It is a formula-based index number ranging from –1500 to 999999. It represents an estimated level of financial need. The SAI Explained (StudentAid.gov PDF)
A lower or negative SAI indicates higher financial need. Federal Student Aid says it also means a higher likelihood of qualifying for a Federal Pell Grant. 7 things to do after you submit your FAFSA form
The SAI is an index number. Federal Student Aid says it is separate from the dollar amount of aid you receive, from what your family is expected to pay, and from your financial aid offer. Each school sends its own aid offer with the actual amounts.
The financial aid office starts with the school’s cost of attendance (COA), then subtracts your SAI to find your financial need. You can receive need-based aid up to that amount.
Schools and private scholarship organizations may use their own SAI formula for their own aid, and a school-based SAI may appear on your aid offer letter. The SAI Explained
Review your FAFSA Submission Summary to confirm your answers. Federal Student Aid says an incorrect answer may cause errors in your SAI, and you may be able to fix it online with a correction. FAFSA Submission Summary: what you need to know
Your SAI is calculated each year you submit a FAFSA form. In most cases it changes every year, based on the formula set by law and the information on that year’s form.
Your SAI shapes federal and school aid. Scholarships from sponsors add to that. Our FAFSA guide walks through the steps before and after you file, and the free match lists scholarships that fit your background, each with its official link.
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Federal Student Aid calls the SAI an eligibility index number that a college’s or career school’s financial aid office uses to determine how much federal student aid you would receive if you attended the school. It comes from the information on your FAFSA form.
The SAI ranges from –1500 to 999999. Federal Student Aid says a lower or negative SAI indicates higher financial need and a higher likelihood of qualifying for a Federal Pell Grant.
The SAI is an index number. Federal Student Aid says it is separate from the dollar amount of aid you receive and from what your family is expected to pay. Each school’s aid offer shows the actual amounts.
An estimated SAI shows on the FAFSA confirmation page. Your official SAI is on your FAFSA Submission Summary, on the Eligibility Overview tab, in your StudentAid.gov account.
Federal Student Aid says your SAI is calculated each year you submit a FAFSA form, and in most cases it changes every year.
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Checked October 29, 2026. Facts above are from the StudentAid.gov pages listed under Sources. If a page changes, the official page wins.
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