Here's a number that should change how you read every college brochure: at the average public four-year college, tuition and fees are less than half the total bill. The College Board's 2025-26 figures put average in-state tuition at $11,950 and average on-campus housing and food at $13,900. Add books, transportation, and personal expenses, and tuition is the minority line item. If you're budgeting around tuition alone, you're budgeting for half a college degree.
Learn three numbers: sticker, cost of attendance, net price
These three terms do almost all the work in college finance, and mixing them up is how families make expensive mistakes.
Sticker price (published price) is the tuition and fees the school lists. Cost of attendance is the school's official annual budget for financial aid: tuition, fees, housing, food, books, supplies, transportation, and personal expenses. Net price is cost of attendance minus grants and scholarships you don't repay. Net price is the only number that matters for your decision. Loans don't reduce net price; they just move the payment into the future with interest.
A 2021 peer-reviewed study found net price calculators for the same family varied by an average of $5,700 per school. So: use every school's official net price calculator, expect noise, and never compare a sticker price at one school to a net price at another.
A worked example: the private school that "costs" $45,000
Private nonprofit colleges averaged $45,000 in published tuition and fees for 2025-26, per the College Board. Scary number. Now watch what grant aid does to it. Using College Board estimates broken down by analysts:
| Line | Amount |
|---|---|
| Published tuition and fees | $45,000 |
| Minus average grant aid (never repaid) | -$28,090 |
| Net tuition and fees | $16,910 |
| Plus housing, food, books, other costs | +$20,470 |
| Net cost of attendance | $37,380 |
Sources: College Board, Trends in College Pricing and Student Aid 2025, via Summit Prep's analysis. Your numbers will differ, but the shape is typical: grant aid wipes out more than half the sticker, and then living costs, which are rarely discounted, put a big chunk back.
The hidden costs that blindside families
Beyond the official cost of attendance, families consistently tell me about the expenses nobody put on a brochure. A realistic annual allowance for these extras runs $3,000 to $5,000 even at the conservative end:
- Textbooks and supplies: $800-$1,500. Some courses require access codes that can't be bought used.
- Technology: $300-$800. A dead laptop in week six of a semester is an emergency expense.
- Transportation: $600-$2,000. Flights home add up fast for out-of-state students; a car adds insurance and parking.
- Health costs: $300-$1,000. Check whether your family health plan covers care in the college's city; some HMO plans barely cover out-of-area care.
- Social and activity fees: $500-$3,000. Greek life, club travel, lab fees. The stuff that makes college fun is rarely free.
Build your estimate in 20 minutes
Here's the process I recommend, in order:
1. Start with tuition by state. Our tuition by state table gives you the average in-state and out-of-state sticker for your state. That's your baseline, not your answer.
2. Add the full cost of attendance. Use the 4-year projector and toggle room and board on. Then add $2,000-$4,000 a year for books, transportation, and personal expenses.
3. Run net price calculators. Every college's website has one (it's required by law). Enter your family's real financial numbers and get the net price. This is the number you compare across schools.
4. Multiply by four, with inflation. Tuition has risen roughly 3-4% a year. A $30,000 first year is about $33,800 by senior year at 3% growth. That compounds to real money.
5. Subtract four years of grants, then look at the gap. Whatever remains is what you save or borrow. If the gap scares you, it should, that's the whole point of the exercise.
My honest opinion
Most families I've seen overspend on college not because they picked the wrong school, but because they picked the right school for the wrong number. They fell in love with a campus, anchored on the tuition figure, and discovered the real bill in October of freshman year.
The families who get it right do the boring version: they build the four-year net cost for every finalist school before the acceptance letters arrive, and they let the numbers veto the feelings when the gap is too big. It's not romantic. It works.
One more thing: talk about this during junior year of high school, not April of senior year. By April the applications are in, the emotions are high, and the leverage is gone. Junior year is when the math can still change the list. (Related: is out-of-state tuition worth it?)