The Student Aid Index (SAI) is the number that replaced the Expected Family Contribution (EFC) on the FAFSA. Both estimate how much aid you qualify for, but the SAI uses a new formula, can go as low as -$1,500, and no longer gives a discount for having multiple children in college at once. Despite the name, neither number is what your family actually pays; it is an index colleges use to award need-based aid.
The switch from EFC to SAI changed real outcomes for many families, helping some and hurting others. Knowing how they differ helps you understand your aid offer. Here is what changed.
What is the Student Aid Index (SAI)?
The SAI is a number, calculated from your FAFSA, that colleges use to measure your eligibility for need-based aid. Your financial need is your cost of attendance minus your SAI, so a lower SAI generally means more aid. The name "index" is deliberate: it is a measure of ability to pay, not a bill you owe.
For how this fits into the bigger picture, see our complete 2026-27 financial aid guide.
How is the SAI different from the EFC?
The SAI differs from the old EFC in three big ways: it can go negative, it dropped the multiple-students-in-college adjustment, and it uses an updated formula. The EFC could never fall below zero, but the SAI can reach -$1,500 to flag the deepest need. The EFC also reduced your expected contribution when siblings were in college at the same time; the SAI does not.
The key differences:
- Negative values: the SAI can be as low as -$1,500; the EFC stopped at 0.
- Multiple in college: the EFC split the contribution across siblings in college; the SAI no longer does.
- New formula: the SAI recalculates income and assets differently from the old EFC.
What does a negative SAI mean?
A negative SAI, down to -$1,500, signals extreme financial need and guarantees the maximum aid for the lowest-income families. A student with a negative SAI automatically qualifies for the maximum Pell Grant. It does not mean you owe nothing or that you get money back; it simply marks the deepest level of need on the index.
To see how need translates into an aid offer, read what financial need is and how it's calculated.
Does the SAI change how much I actually pay?
No. Like the old EFC, the SAI is not your bill; it is an input colleges use to build your aid package. What you actually pay is the net price: the cost of attendance minus the grants and scholarships you receive. Two schools can offer very different net prices from the exact same SAI.
That is why you should compare offers by net price. Use our guide on how to use a college net price calculator to estimate your real cost at each school.
Your next step
The SAI is the new EFC: a single FAFSA number that drives your need-based aid, now able to go negative and no longer discounted for siblings in college. File the FAFSA to get your SAI, then judge schools by the net price they offer, not the index itself. Read our complete 2026-27 financial aid guide, then create your free CollegeLens plan to see what each school will really cost.
You're doing the hard, smart work of understanding the number behind your aid. That's exactly how families read an offer with clear eyes.
-- Sravani at CollegeLens