How This Calculator Projects Your Total Cost
Short answer: today's annual cost is compounded forward at your chosen increase rate for each year of enrollment, then summed across every year actually spent in school -- because year 1 of college costs less than year 4, since costs keep rising the whole time you're enrolled.
Total cost = sum of every year's cost across the full attendance duration
The Savings Gap tab uses a separate, standard compound-growth formula for your existing balance and ongoing monthly contributions, optionally net of tax on the investment growth -- and can also solve in reverse for the monthly contribution that would fully close whatever gap remains.
A Full Worked Example
Say today's annual cost is $25,000, enrollment starts in 10 years, costs rise 5% a year, and the program takes 4 years to complete.
- First-year cost at enrollment: $25,000 compounded for 10 years at 5% → $40,722.37.
- Total cost across all 4 years: summing years 10 through 13 of compounding → $175,518.49.
Now suppose you already have $5,000 saved, contribute $300 a month going forward, and expect a 6% annual return in a 529 plan (0% tax, since qualified 529 growth is tax-free): your projected balance at enrollment would be about $58,261 -- leaving a gap of roughly $117,258 to cover through additional savings, aid, or loans. The Savings Gap tab shows closing that gap entirely through savings alone would take about $1,016/month instead of $300/month -- a useful reality check on how far a modest monthly contribution actually goes against a $175,518 target.
Average College Costs by Type (2025-26)
Short answer: according to the College Board, the average total annual cost (tuition, fees, and room & board) ranges from about $21,320 at a 2-year public college to $65,470 at a 4-year private college.
- 4-year private: $65,470/year
- 4-year public, in-state: $30,990/year
- 4-year public, out-of-state: $50,920/year
- 2-year public: $21,320/year
These are national averages, not a specific school's actual cost, which can run well above or below these figures -- use the quick-select chips above as a rough starting point, then swap in a specific school's published cost of attendance (or better, its net price calculator result) once you have one in mind.
Closing the Gap: How Much Should You Be Saving?
Short answer: there's no single right percentage, but the earlier you start and the more consistently you contribute, the smaller the gap you'll need to cover with loans or aid later -- since both time and contribution size compound in your favor.
The Savings Gap tab above runs the actual math for your situation: enter your current balance, a realistic monthly contribution, your timeline, and an expected return, and it shows both your projected balance at enrollment and -- if there's a shortfall -- exactly what monthly contribution would eliminate that gap entirely. Running this every year or two as your timeline shortens and your actual returns come in is far more useful than picking an arbitrary target once and forgetting about it.
529 Plans: Why Tax-Free Growth Matters
Short answer: a 529 plan's investment earnings grow federally tax-free (and often state-tax-free too) when used for qualified education expenses, while the same growth in a regular taxable brokerage or savings account would be taxed as it's earned or realized -- meaningfully shrinking your effective return over a long timeline.
That's exactly what the Tax Rate on Growth field in the Savings Gap tab models: set it to 0% to simulate a 529 plan's tax-free treatment, or enter your actual combined tax rate to see how a taxable account compares for the same contributions and return assumption. Over a decade or more, that tax drag is often the difference between comfortably covering a meaningful share of costs and falling noticeably short.
A separate option, the 529 prepaid plan, locks in tuition credits at today's rates for a specific group of schools instead of investing for growth -- a different hedge against the same tuition-inflation problem this calculator's Projected Cost tab models directly.
Beyond Tuition: What Else College Actually Costs
Short answer: tuition and fees are usually the largest line item, but room and board, books and supplies, and everyday living costs add up to a meaningful share of the total -- which is why the "annual cost today" figure above should reflect the full cost of attendance, not just tuition alone.
- Tuition and fees: the price of academic instruction itself -- varies drastically by school, program, and in-state vs. out-of-state status.
- Room and board: on-campus housing and meal plans, often mandatory for first-year students even at schools where it's optional later.
- Books, supplies, and technology: a smaller line item than tuition but still a real, recurring annual cost.
- Personal and transportation costs: everyday living expenses and getting to and from school, which official "cost of attendance" figures typically include as an estimate.
When a school publishes a "cost of attendance" figure, it's meant to capture all of these together -- that combined number, not tuition alone, is what belongs in this calculator's Annual Cost Today field for the most accurate projection.
Frequently Asked Questions
Why does college cost increase faster than regular inflation?
College costs have historically risen faster than the broader Consumer Price Index in many years, driven by rising labor and facility costs, expanded student services, and reduced state funding per student at public universities -- though the exact gap varies by period and institution type. Using a tuition-specific increase rate, rather than general inflation, gives a more realistic projection.
Should I use the sticker price or the net price after financial aid?
If you have a reasonable estimate of aid, grants, or scholarships, use the net price you actually expect to pay -- the sticker price often substantially overstates what many families end up paying. Every U.S. college is required by law to offer its own net price calculator, which is the most accurate source for a specific school once you have a student in mind.
How much of college costs should come from savings vs. loans?
There's no fixed rule, but a common approach is to cover as much as reasonably possible with savings, grants, and scholarships first, since those don't need to be repaid, and treat loans as the gap-filler for whatever's left. The Savings Gap tab above shows exactly what that remaining gap looks like given your current savings and contribution plan.
What's the difference between a 529 savings plan and a 529 prepaid plan?
A 529 savings plan invests contributions in mutual-fund-style portfolios that grow tax-free for qualified education expenses; a 529 prepaid plan instead locks in tuition credits at current rates for a specific group of (usually in-state public) schools. Savings plans are far more common and portable; prepaid plans hedge directly against tuition inflation but are more restrictive about which schools they cover.
Is a 529 plan better than a regular savings or brokerage account for college costs?
For money you're confident will go toward qualified education expenses, yes -- 529 earnings grow tax-free federally (and often at the state level too) when used for tuition, fees, room and board, books, and similar costs, while a regular taxable account's investment gains are taxed. The tradeoff is flexibility: non-qualified 529 withdrawals face income tax plus a 10% penalty on the earnings portion.
What if I'm starting to save late — is it still worth it?
Yes -- even a few years of contributions and growth measurably shrinks the gap you'd otherwise have to cover with loans, and every dollar saved is a dollar that doesn't accrue student-loan interest later. Use the Savings Gap tab with your actual years remaining to see the realistic numbers for your specific timeline rather than assuming it's too late to matter.
Does financial aid usually cover the full gap between cost and savings?
Not usually in full -- financial aid packages are based on an Expected Family Contribution calculated from income and assets, and even students with demonstrated need commonly receive a package that still leaves some cost to cover through savings, work-study, or loans. Aid can meaningfully close the gap, but it's rarely safe to assume it eliminates it entirely.
Do all these college cost projections assume I'm paying full price?
Yes -- this calculator projects a cost figure you provide (whether that's a sticker price or your own net-price estimate) forward at a chosen growth rate. It doesn't calculate financial aid eligibility itself; for that, use a school's own net price calculator, then bring that more specific number into the Annual Cost Today field here.
This calculator is provided for educational and estimation purposes only and does not constitute financial advice. Actual future college costs, investment returns, and financial aid availability are not guaranteed and vary significantly by school, market conditions, and individual circumstances — consult a financial advisor for guidance specific to your situation.