How Schools Calculate Your Financial Aid Package

What financial aid calculation actually means

Financial aid calculation is the process your school uses to figure out how much money it will offer you. It starts with a number called your Expected Family Contribution (EFC) or, if you filed the FAFSA after 2023, your Student Aid Index (SAI). The school subtracts that number from its total cost of attendance — tuition, fees, room, board, books, and living expenses. Whatever is left is the amount the school says it can help cover.

This is not a promise of a specific dollar amount. Different schools use different formulas, and they do not all have the same money to give. A school with a large endowment can cover more of that gap than a school with a smaller budget. Understanding how the calculation works helps you read your financial aid letter and compare offers from different schools.

Key Takeaways

• Your SAI (or EFC if you filed before 2024) is calculated from your FAFSA answers about income, assets, family size, and number of students in college.
• The school subtracts your SAI from its cost of attendance to find the amount it says you need — but that does not mean the school will cover all of it.
• Schools use their own formulas to decide how much grant money (which you do not repay) versus loans (which you do) to offer you.
• Two schools with the same cost of attendance may offer you very different aid packages because they have different budgets and different policies.
• Your aid package can change each year based on changes to your family's income, assets, enrollment status, or the school's budget.

How your SAI is calculated from the FAFSA

The FAFSA collects information about your family's income, assets, household size, and how many people in your family are in college at the same time. A federal formula uses those numbers to calculate your SAI. The formula assumes your family will contribute a certain percentage of income and assets toward education costs. A family with higher income or more assets gets a higher SAI; a family with lower income or more assets in the student's name gets a lower SAI.

Your SAI is the same no matter which school you apply to — it comes from the FAFSA data alone. But each school then uses that SAI differently. A school with more money to distribute might say "your SAI is $5,000, so we will cover the rest." A school with less money might say "your SAI is $5,000, and we will cover part of the rest with grants and loans."

The SAI does not account for things like medical expenses, job loss, or private school costs for younger siblings. Some schools ask additional questions on their own forms to adjust the calculation for those circumstances. This is called professional judgment, and it is entirely up to each school whether to use it.

What goes into a school's cost of attendance

Cost of attendance is not just tuition. It includes tuition and fees, room and board (or an estimate of housing and food costs if you live off-campus), books and supplies, transportation, and a personal expense allowance. Schools set these numbers themselves, and they vary widely even between similar schools in the same region.

Some schools build in higher estimates for books or transportation. Some include a laptop or technology fee. Some assume you will live on campus all four years; others assume you will move off-campus after the first year. These differences matter because the school subtracts your SAI from this total to find your financial need. A higher cost of attendance means a higher need number, which can mean more aid — but only if the school has the money to meet that need.

You can usually find the cost of attendance on the school's financial aid website or in the net price calculator, which is a tool most schools are required to provide. The calculator lets you enter your family's information and see an estimate of what the school will cost you.

How schools decide between grants and loans

Once a school knows how much you need, it decides how much of that need to cover with grants (money you do not repay) and how much with loans (money you borrow and repay). This decision is based on the school's own policy, not on a federal formula. Some schools are need-blind, meaning they do not look at your financial need when deciding whether to admit you — but they still decide how much grant money to give you once you are admitted. Other schools are need-aware, meaning financial need can affect admission decisions.

Schools also differ in how much they commit to covering. Some schools say they will meet 100 percent of demonstrated need with grants and loans. Others cover 80 percent, or 60 percent, or some other amount. A few schools have committed to meeting need without loans — meaning they use only grants, not borrowed money. These policies are usually on the school's financial aid website under "aid policy" or "meeting need."

The mix of grants and loans also depends on your year in school. Many schools give more grant money to first-year students and shift toward more loans in later years. Some schools give more aid to students with lower SAI scores and less to students with higher SAI scores. These are policy choices, and they vary from school to school.

Why two schools might offer you different amounts

Imagine two schools both cost $60,000 a year and both calculate your SAI as $10,000. School A has a large endowment and commits to meeting 100 percent of need with grants. It would offer you $50,000 in grants. School B has a smaller budget and meets 70 percent of need. It would offer you $35,000 in grants and expect you to take out $15,000 in loans. Your out-of-pocket cost is very different, even though the schools cost the same.

Schools also weight different factors differently. Some schools give more aid to students from their home state. Some give more to students in certain majors or with certain talents. Some adjust aid based on whether you live on campus or commute. Some recalculate your SAI using their own form if they think your family's circumstances have changed since you filed the FAFSA. These policies are not transparent in the aid letter itself — you have to ask the school's financial aid office to explain how it arrived at your specific offer.

How your aid package changes from year to year

Your SAI can change each year if your family's income or assets change significantly. If a parent loses a job or retires, your SAI may go down and your aid may go up. If your family's income rises, your SAI may go up and your aid may go down. If a sibling graduates from college, your SAI may change because fewer people in your family are in college at the same time.

Your school's budget can also change. If a school has a smaller budget in a given year, it may reduce the grant portion of aid packages across the board and shift more students toward loans. If a school receives a large donation, it may increase grants. You will not know this is happening until you receive your aid letter each year.

Your enrollment status matters too. If you drop to part-time enrollment, your aid may be reduced. If you change majors to one the school prioritizes, your aid might increase. If you live off-campus instead of on-campus, the school may reduce your cost of attendance and therefore your aid offer. Always check your aid letter each year and contact the financial aid office if something looks different from the previous year.

What to do when you receive your aid letter

Your aid letter will show your cost of attendance, your SAI, your financial need, and the aid the school is offering. Read it carefully. Make sure the cost of attendance matches what you expect to pay. Check that your family size and number of college students are correct — errors in these fields can change your SAI. If anything looks wrong, contact the financial aid office and ask them to explain the calculation.

Compare aid letters from different schools side by side. Look at the total cost after aid, not just the grant amount. A school offering $30,000 in grants but $25,000 in loans costs you more than a school offering $20,000 in grants and $5,000 in loans, even though the first number is higher. Some schools provide a financial aid shopping sheet that breaks this down clearly; if yours does not, ask the financial aid office to provide one.

If you think your family's circumstances have changed since you filed the FAFSA — a job loss, medical emergency, or other significant change — contact the financial aid office and ask whether they can use professional judgment to recalculate your aid. They are not required to do this, but many schools will if you explain your situation and provide documentation.

Frequently Asked Questions

Does a higher SAI always mean less financial aid?

Yes, in the sense that a higher SAI means a lower financial need number, and schools use need to decide how much to offer. But the actual aid you receive also depends on how much money the school has and its aid policies. A school with a large budget might still offer substantial aid to a student with a higher SAI, while a school with a smaller budget might offer less to a student with a lower SAI.

Can I appeal my financial aid offer?

Most schools do not use the word "appeal," but they do allow you to ask for a review if your circumstances have changed or if you believe an error was made. Contact the financial aid office, explain your situation, and provide documentation. The school is not required to change your offer, but many will reconsider if you have a legitimate reason.

What is the difference between demonstrated need and expected family contribution?

Demonstrated need is what the school calculates: cost of attendance minus your SAI. Expected Family Contribution (EFC) was the old term for what is now called Student Aid Index (SAI). They mean the same thing — the amount the federal formula says your family should contribute toward education costs.

If I get a scholarship, does my financial aid go down?

It depends on the school's policy. Some schools reduce their grant aid by the amount of outside scholarships you receive. Others let you keep both. Ask your school's financial aid office how they treat outside scholarships before you accept one, so you understand how it will affect your total aid package.

Why does my aid letter show loans I did not ask for?

Schools include loans in their aid packages as a standard practice. You are not required to accept the loans — you can decline them and pay that portion out of pocket or find other funding. Contact the financial aid office if you want to reduce or remove the loan portion of your package.