How the Student Aid Index Decides What You Pay for College
By Muntasir Minhaz • Published Sep 18, 2026 • Updated Sep 18, 2026 • US Financial Aid & Scholarships
The Student Aid Index (SAI) replaced the Expected Family Contribution in 2024-25 as the number schools use to build your financial aid offer. It comes from your FAFSA answers, can go as low as negative 1,500, and no longer factors in how many family members are in college at once.
💵 SAI is not a bill, it is what colleges use to calculate your aid
Formula looks at income, assets, and family size
A negative SAI shows the highest level of financial need
Siblings in college no longer lower your SAI
Schools subtract SAI from cost of attendance to find your need
What the Student Aid Index replaced
Starting with the 2024-25 award year, the Student Aid Index (SAI) replaced the Expected Family Contribution (EFC) on the FAFSA. The new name reflects what the number does: it is an index schools use to build your aid package, not a bill you owe. A financial aid office subtracts your SAI from its cost of attendance to find your financial need.
Where SAI comes from
Your SAI is calculated from the answers you and your contributors give on the FAFSA. Depending on your dependency status, the formula factors in:
Your family's adjusted gross income and untaxed income
Certain assets, such as savings, investments, and business or farm value above a protection allowance
Family size
Your own income and assets, if you are an independent student
The FAFSA pulls most income figures directly from the IRS through the Direct Data Exchange once you and your contributors give consent, so you rarely type in tax numbers by hand.
The biggest formula change: no discount for siblings in college
Under the old EFC formula, having more than one family member enrolled in college at the same time divided the family contribution and lowered each student's number. The SAI formula removed that adjustment.
If you have a sibling in college with you, your SAI no longer drops because of it. Families with multiple students in school at the same time feel this change the most.
SAI can go negative
The SAI formula allows a minimum value of negative 1,500, unlike the old EFC, which stopped at zero. A negative SAI signals the highest level of financial need and can affect how a school prioritizes limited aid, such as Federal Supplemental Educational Opportunity Grant funds.
Dependency status changes whose information counts
If you are a dependent student, your SAI includes your parents' income and assets along with your own. Independent students, generally those 24 or older, married, veterans, or supporting their own dependents, build their SAI from their own finances and their spouse's, if married.
Getting your dependency status right on the FAFSA matters, since it decides whose financial details go into the formula.
How schools use your SAI
Every school you list on the FAFSA receives your SAI and applies it to its own cost of attendance:
| Calculation | What it shows |
|---|---|
| Cost of attendance minus SAI | Your financial need at that school |
| Financial need minus grants and scholarships | Remaining need that loans and work-study can cover |
Two schools with different costs build different aid offers from the same SAI, since a costlier school shows more need against the same index number.
Where to find your SAI
Your SAI appears on your FAFSA Submission Summary after you submit the form. You can run a preview before you file with the Federal Student Aid Estimator , which gives an early estimate using the same formula.
SAI does not guarantee an aid amount
Your SAI stays the same no matter which school you list. What changes is how much aid each school can offer once it subtracts your SAI from its own cost of attendance. A student with the same SAI could see a large aid package at an expensive private school and a much smaller one at a lower cost public school where less need exists to fill.
You can ask for a professional judgment review
If your family's financial situation changed since you filed taxes, a job loss, medical bills, or a similar hardship, contact your school's financial aid office directly. Financial aid administrators can adjust your SAI based on documentation, even though the FAFSA formula itself does not ask about circumstances like these.