ReckonBoxWhat college will really cost you
A college cost calculator projects today's price forward to the year your child enrolls, then measures it against what your savings will grow to. The gap between those two numbers is the point, and it usually opens wider than parents expect, because the projection compounds for years before the first tuition bill arrives.
Starting from the 2025-26 in-state public average of $30,990 a year, at 4% annual growth, one year of college in 10 years is projected at $45,873, and four years total about $194,797. With $5,000 saved and $300 a month at a 6% return, you reach roughly $58,000, leaving a $136,536 gap.
The inflation rate is the whole ballgame
The single number that most changes a college projection is the assumed cost growth rate, and the usual 5% default overstates what tuition has actually done lately. Per College Board's Trends in College Pricing 2025, published tuition and fees rose between 2.7% and 4.0% in 2025-26.
Over a longer view the case is stronger still: inflation-adjusted in-state tuition at public four-year colleges fell 7% across the last decade. So a projection built on 5% a year can overshoot by tens of thousands of dollars over an 18-year horizon. This tool defaults to 4% and lets you slide it, because a guess this consequential should be visible, not buried.
Tuition or the whole cost of attendance
Published tuition and fees is the sticker for classes; total cost of attendance adds room, board, books and living costs, and it is roughly triple the tuition figure. Which one you plan for changes the target completely.
For 2025-26, per College Board, average tuition and fees are $11,950 in-state, $31,880 out-of-state, and $45,000 at a private nonprofit four-year college. Add room and board and the in-state total runs near $30,990, the private near $65,470. Most families budget for the full cost of attendance, so that is the default here, but the field is yours to set to whatever you intend to cover from savings.
| 2025-26 average, per College Board | Tuition and fees | Total cost of attendance |
|---|---|---|
| Public four-year in-state | $11,950 | about $30,990 |
| Public four-year out-of-state | $31,880 | about $50,920 |
| Private nonprofit four-year | $45,000 | about $65,470 |
Where the numbers come from
The projected cost inflates today's annual figure by your growth rate for each year until enrollment, then again for each year of college, since the price keeps climbing while your child is there. Your savings grow two ways: the current balance compounds at your expected return, and each monthly contribution accumulates as a future-value annuity to the start of college. The gap is the projected cost minus those savings, and the required contribution is the monthly amount that would close it.
The projection stops at the start of college and compares against the full multi-year cost, which is deliberately conservative. It assumes the growth and return rates you enter hold steady, which no real market does.
What this does not cover
This is a sticker-price projection, not a financial aid estimate. It does not model grants, merit or need-based scholarships, or the tax treatment of a 529 plan, and per College Board, aid pulls the average net tuition well below the published price, so many families pay considerably less than the headline. It also cannot know which college your child will choose, which is the biggest variable of all.
None of this is advice on how to invest or how much to save. For an aid estimate at a specific school, use that college net price calculator, which federal law has required on every college website since 2011. For a savings plan around your own finances, a financial adviser is the right call.
Frequently asked questions
How much will college cost in the future? It depends on the cost today and the growth rate you assume. Starting from the 2025-26 in-state public average of $30,990 a year, at 4% annual growth, one year of college in 10 years is projected at $45,873, and four years total about $194,797. The projection is very sensitive to the growth rate, which is why it is an input you set.
What college cost inflation rate should I use? Per College Board, published tuition and fees rose 2.7% to 4.0% in 2025-26, and inflation-adjusted in-state tuition actually fell 7% over the last decade. Many calculators default to 5%, which overstates the recent rate. This tool defaults to 4% and lets you test how much the total moves as you change it.
How much do I need to save for college? Enough that your savings, grown at your expected return, reach the projected cost by enrollment. On the default projection, a $194,797 goal with $5,000 saved and a 6% return needs about $1,133 a month to fully fund, where $300 a month covers roughly 30%. The tool shows both the gap and the monthly saving that closes it.
What is the average cost of college in 2025-26? Per College Board Trends in College Pricing 2025, average published tuition and fees are $11,950 at public four-year in-state, $31,880 out-of-state, $4,150 at public two-year, and $45,000 at private nonprofit four-year. Total cost of attendance, adding room and board, runs higher, around $30,990 in-state and $65,470 private.
Should I use tuition or total cost of attendance? Use whichever you are planning to cover. Tuition and fees is the published sticker for classes, $11,950 in-state for 2025-26. Total cost of attendance adds room, board, books and living costs, roughly $30,990 in-state, which is what most families budget for. Enter the figure that matches what you intend to pay from savings.
Does this account for financial aid or scholarships? No, it projects the sticker cost and your savings against it, not grants, scholarships, or need-based aid. Per College Board, aid brings the average net tuition well below the published price, so many families pay less. For an aid estimate at a specific school, use that college net price calculator, which federal law requires it to publish.