What is the fafsa efc / sai calculator?
In short
The Student Aid Index (SAI) — which replaced the EFC in 2024-25 — estimates how much a family can contribute to college. It combines a portion of parent income and assets with student income and assets. A lower SAI means more need-based financial aid eligibility.
Estimates your Student Aid Index (SAI) from parent and student income and assets to gauge how much need-based financial aid you may qualify for.
How to use this calculator
- 1Enter parent income and assets (exclude retirement accounts and primary home).
- 2Enter student income and assets.
- 3Enter family size and number in college.
- 4See your estimated SAI and the parent/student contribution breakdown.
The formula
- parent
- — ~47% of available income + 5.64% of assets
- student
- — 50% of income + 20% of assets
- SAI
- — parent contribution + student contribution
Worked example
The scenario
$90,000 parent income, $50,000 parent assets, $5,000 student income, $3,000 student assets, family of 4.
The result
Estimated SAI ≈ $20,000–$24,000 — your need = cost of attendance minus this figure.
Common use cases
- Families estimating college financial aid eligibility before filing the FAFSA.
- Comparing how different schools' costs interact with your SAI.
- Understanding how student assets are assessed more heavily than parent assets.
Limitations & assumptions
- This is a simplified estimate — the official SAI uses the full federal methodology.
- The 2024-25 SAI no longer divides the parent contribution by number in college.
- Does not model the negative SAI (down to −$1,500) now possible for very low-income families.
Frequently asked questions
Disclaimer: KalkWise calculators are provided for general informational and educational purposes only and do not constitute financial, investment, tax, or legal advice. Results are estimates based on the figures you enter and the assumptions described above. Actual outcomes will vary. Consult a qualified professional before making financial decisions.