The FAFSA uses your family's income and assets to calculate Expected Family Contribution

The FAFSA formula takes your family's income, assets, household size, and number of family members in college, then produces a single number called your Expected Family Contribution (EFC) — now called the Student Aid Index (SAI) as of the 2024–25 school year. This number represents what the federal government believes your family can afford to pay toward college costs in a given year. Colleges subtract this number from their total cost of attendance to determine how much federal aid you may receive.

The calculation is not based on what you actually can afford or what you choose to spend. It follows a fixed federal formula that weighs income much more heavily than assets, treats parent income differently than student income, and ignores some types of money entirely.

Key Takeaways

  • The FAFSA formula produces your Student Aid Index (SAI), which colleges use to calculate how much federal aid you may receive.
  • Income is weighted much more heavily than assets — a family's income can reduce aid may be able to access far more than savings of the same dollar amount.
  • Student income and assets are treated more harshly than parent income and assets, meaning money in a student's name reduces aid more.
  • The formula ignores retirement accounts, primary home equity, and certain types of income like Social Security and veterans' benefits.
  • Your SAI is recalculated each year based on the prior year's tax return, so changes in family income or circumstances affect aid in the following academic year.

What income counts and what does not

The FAFSA asks for your adjusted gross income (AGI) from your tax return, plus certain types of untaxed income. Wages, salary, self-employment income, interest, dividends, and capital gains all count. So do untaxed portions of pensions, IRA distributions, and Social Security benefits — but only if you are not a dependent student. For dependent students, parent Social Security and veterans' benefits do not count as income at all.

Money that does not count includes retirement account balances (401k, traditional IRA, Roth IRA), the value of your primary home, child support received, and financial aid itself. If you receive a scholarship or grant, that does not increase your expected contribution. Inheritances and gifts are not counted as income, though if you deposit them into a savings account they become countable assets the following year.

How assets are treated differently for parents and students

The FAFSA asks about savings, investments, and real estate (other than your primary home). Parent assets are assessed at up to 5.64 percent of their value — meaning a parent with $10,000 in savings might see their expected contribution increase by roughly $564. Student assets are assessed at 20 percent — the same $10,000 in a student's name would increase expected contribution by about $2,000.

This difference matters most for families with significant savings. A family with $50,000 in a parent-owned investment account will see a smaller reduction in aid than if that same $50,000 sits in a student-owned account. Some families attempt to move assets into retirement accounts or pay down debt before filing FAFSA to reduce the asset count, though this strategy only works if done before the tax year used for the FAFSA calculation.

Why student income reduces aid much more than parent income

Student income is assessed at 50 percent — half of what a student earns counts toward expected family contribution. Parent income is assessed at 22 to 47 percent, depending on parent income level. This means a dependent student who works and earns $5,000 will see their aid reduced by roughly $2,500, while a parent earning an additional $5,000 might see aid reduced by $1,100 to $2,350.

The formula also gives students a small income protection allowance — roughly $6,660 for the 2024–25 year — meaning the first several thousand dollars a student earns do not count at all. Parents receive a much larger allowance based on family size and number of parents working. This structure assumes parents have other expenses and obligations, while student income is expected to go toward education.

How family size and number of students in college affect the calculation

A larger household reduces expected family contribution because the formula assumes more people depend on the same income. A family of four with $60,000 income will have a different expected contribution than a family of six with the same income — the larger family's contribution will be lower.

Similarly, if two or more family members attend college at the same time, the expected contribution is divided among them. If parents are expected to contribute $8,000 and have two children in college, each child's aid calculation uses $4,000 as the parent contribution. This means having a sibling in college increases your aid may be able to access. If your sibling graduates or leaves school, your aid will decrease the following year even if nothing else in your family's finances changed.

When your SAI changes and how it affects aid year to year

Your Student Aid Index is calculated based on the tax return from two years prior. The FAFSA filed in October 2024 for the 2024–25 school year uses your 2022 tax information. This means a job loss, inheritance, or major income change in 2024 will not affect your aid until the 2025–26 school year.

If your family's financial situation changes significantly during the school year — a parent loses a job, income drops, or unexpected expenses arise — you can file a FAFSA correction or contact your college's financial aid office to request a professional judgment review. Some colleges will recalculate your aid mid-year if circumstances warrant it, though this is at each college's discretion and is not may provide.

What the formula ignores that might affect your actual costs

The FAFSA formula does not account for medical expenses, childcare costs, private school tuition for younger siblings, or debt beyond a mortgage. It does not consider whether a parent is self-employed and has business expenses, or whether the family lives in a high-cost area. A family paying $3,000 a month in rent and a family paying $1,000 a month have the same expected contribution if their income and assets are identical.

The formula also does not distinguish between stable, long-term income and one-time earnings. A family that received a large bonus one year will have higher expected contribution that year, even if that bonus does not recur. This is why some families see their aid drop significantly in years when they have unusual income, then rise again the following year.

Frequently Asked Questions

Does the FAFSA formula change every year?

The percentages and income protection allowances change slightly each year, and Congress has modified the formula itself several times. The 2024–25 year introduced significant changes, including the new Student Aid Index name and adjusted assessment rates. You should review the current year's FAFSA instructions rather than assuming last year's calculation applies.

If I have a 529 plan in my name, does it count as an asset?

A 529 plan owned by a parent counts as a parent asset and is assessed at roughly 5.64 percent. A 529 owned by a student counts as a student asset and is assessed at 20 percent. Some families open 529 plans in a parent's name for this reason, though this strategy only works if the parent is the account owner on the FAFSA.

Can I reduce my expected contribution by paying off debt before filing FAFSA?

Paying off debt does not directly reduce your expected contribution because debt is not counted in the FAFSA formula. However, if you use savings to pay off debt, you reduce your countable assets, which does lower your expected contribution. The trade-off is that you no longer have that savings cushion.

What happens to my aid if my parents' income drops mid-year?

Your official aid calculation will not change until the following school year, when you file the next FAFSA. However, you can contact your college's financial aid office and request a professional judgment review, explaining the income change. Some colleges will adjust your aid immediately if the change is significant and documented, but this is not automatic.

Does inheritance count as income on the FAFSA?

Inheritance itself is not counted as income. However, if you deposit inherited money into a savings or investment account, it becomes a countable asset the following year and will reduce your aid may be able to access. Inherited retirement accounts have different rules and should be discussed with a tax professional.