Cost of attendance vs net price: what you'll actually pay

Two numbers decide how expensive a college really is, and schools don't always label them clearly. The cost of attendance is the full sticker for a year, including costs the school never bills you for. The net price is what's left after grants and scholarships. The amount you pay out of pocket sits somewhere between the two, depending on how you cover the net price.

Here's how each number is built, where to find it, and how to avoid the most common mix-ups.

What the cost of attendance includes

The cost of attendance (COA) is set by each school using categories defined in federal law. Only listed costs can go in. For students enrolled at least half time, the main categories are:

• Tuition and fees normally charged to students with the same course load.

• Housing and food, with different allowances for on-campus, off-campus and living-with-family students.

• Books, course materials, supplies and equipment, including a reasonable allowance for a personal computer.

• Transportation between school, home and work, but not buying a car.

• Personal expenses, such as toiletries and phone costs.

• Situational costs where they apply, such as dependent care or disability-related expenses.

Two details catch families out. First, schools usually use averages rather than your actual costs, so your real spending can be higher or lower. Second, schools can set different COAs for different groups, for example in-state and out-of-state students, so make sure the COA on your letter matches your situation.

Billed costs vs estimated costs

Split the COA into two parts:

• Direct (billed) costs: tuition, fees and, if you live on campus, housing and a meal plan. These appear on the school's bill.

• Indirect (estimated) costs: books, transportation and personal spending. You pay these yourself, often over the year.

A letter that shows only direct costs makes a school look cheaper than one that shows the full COA. Compare like with like.

What net price means

Federal law defines net price as the cost of attendance minus need-based and merit-based grant aid from federal, state and school sources. Loans aren't subtracted, because you repay them. Neither is work-study, because it's pay for a job.

Sample (fictional): Riverbend University

• Cost of attendance: $33,800

• Riverbend Grant: $9,000

• Federal Pell Grant: $3,100

• Sample State Grant: $1,500

• Federal Direct Subsidized Loan: $3,500

• Federal Direct Unsubsidized Loan: $2,000

Grants total $13,600, so the net price is $33,800 minus $13,600 = $20,200. The $5,500 in loans doesn't change that number. It's one way to pay part of it.

Where to find each number

1. Net price calculator. Federal law requires colleges that take part in federal student aid programs to post a net price calculator on their websites. It estimates your individual net price based on what similar students paid in an earlier year. Search the school's site for "net price calculator," usually on the financial aid or admissions pages.

2. College Scorecard. The U.S. Department of Education's College Scorecard shows average costs and other data, such as graduation rates, for each school.

3. Your financial aid offer. After admission, this is the number that counts. Some schools use the College Financing Plan, a voluntary standard format from the Department of Education designed to make offers easier to compare.

4. Your FAFSA Submission Summary. The "School Information" tab lists each school's average annual cost of attendance alongside graduation rates and median debt.

Why the calculator and the offer can differ

A net price calculator is an estimate built on last year's students and your own inputs. Your actual offer can differ because:

• your family's information on the FAFSA form differs from what you entered in the calculator;

• the school's grant budget or costs changed for the new year;

• you received an outside scholarship and the school adjusted its own aid;

• the calculator assumed on-campus housing and you plan to live elsewhere.

If the gap is large, ask the aid office which inputs changed.

From net price to out-of-pocket cost

Net price is still not the same as the cash you'll pay this year. Use this order:

1. Start with the net price ($20,200 in the sample).

2. Subtract money you'll realistically earn from work-study or a job during the year.

3. Subtract savings and what your family can pay from income.

4. Whatever is left is what you'd need to borrow.

That last number matters most for comparing schools over four years, because loans add up and must be repaid with interest. Federal loan limits for undergraduates are capped by year in school, so a large gap often lands on parents or private borrowing.

Common mistakes

• Treating "total aid" as a discount. If the total includes loans, the school is not that much cheaper.

• Comparing a full COA with a tuition-only figure. Add the missing categories yourself before comparing.

• Assuming year one repeats. Grants can be first-year only, and costs usually rise. Ask about renewal and typical tuition increases.

• Ignoring housing choices. Moving off campus changes the housing and food allowance and your actual spending.

Questions to ask

• "Is this COA for on-campus or off-campus housing?"

• "Which of these costs will appear on my bill?"

• "Are these grants renewable each year, and on what conditions?"

• "Why is my offer different from your net price calculator's estimate?"

Check your own numbers before you decide

EasyToDecode, launching soon, will read your aid offers, quote each cost and grant line, calculate the first-year net price from the letter's own numbers, and flag costs a letter leaves out. See how it works or join the waitlist to hear when it opens.