The Sticker Price Will Shock You
A child born in 2026 will start college in 2044. At the current rate of tuition growth, a four-year degree at a public in-state university could cost over $130,000 in total. At a private university, the same degree could exceed $280,000. Those numbers sound impossible, but they are the logical output of compounding 4 to 5% annual tuition increases over 18 years.
The College Board's Trends in College Pricing 2025 reports the following average published prices for the 2025-26 academic year:
| School Type | Average Tuition and Fees | Total Cost (with room and board) |
|---|---|---|
| Public four-year, in-state | $11,950 | $30,990 |
| Public four-year, out-of-state | $31,880 | $50,920 |
| Private nonprofit four-year | $45,000 | $65,470 |
These are averages. Elite private universities can exceed $90,000 per year including room and board. Many public universities offer a solid education for under $25,000 per year for in-state students. The college savings target you enter should reflect the type of school you are actually planning for, not the most expensive option.
The good news is that tuition inflation has slowed. Over the past decade, published tuition and fees at public four-year schools increased by about 2.5 to 3% per year before adjusting for inflation, which is lower than the 5 to 6% annual increases seen in the 2000s. After adjusting for inflation, real tuition growth has been under 1% in the public sector. Still, even modest inflation compounds significantly over 18 years.
How the Math Actually Works
The calculator projects future college costs by applying an assumed tuition inflation rate to today's prices, then calculates how much you need to save monthly to reach that target by the time your child enrolls. The formula combines compound interest on your current savings with the future value of monthly contributions.
Two variables drive the result: the tuition inflation rate and your investment return rate. Tuition inflation has historically averaged 4 to 5% per year, though recent years have been lower. Investment returns depend on your asset allocation. An age-based 529 portfolio that holds mostly stocks when the child is young might return 6 to 8% over a long period, shifting to more conservative holdings as college approaches.
The gap between your return rate and the tuition inflation rate is what matters. If your investments return 6% and tuition rises 5%, your real return is only 1%. That is why starting early matters so much: more years of compounding at a positive real return means smaller monthly contributions.
Why Your Assumptions Matter
Tuition inflation rate: Use 4 to 5% for conservative planning. If you believe the recent slowdown in tuition growth will persist, 3% is defensible. The College Board data shows that inflation-adjusted tuition at public four-year schools has been nearly flat over the past decade, but nominal prices still rise every year.
Investment return: Use 5 to 6% for an age-based 529 portfolio. This is lower than the long-term stock market average because 529 portfolios shift to bonds and cash as college approaches, reducing returns in the final years. Do not use 10% unless your child is a newborn and you plan to hold 100% stocks until freshman year, which is risky.
Coverage target: Most families do not aim to cover 100% of college costs from savings alone. Financial aid, merit scholarships, student loans, and student income typically cover a portion. Setting your target at 50 to 75% of total costs is reasonable and dramatically reduces the monthly savings requirement.
How Much Should You Save Monthly?
| Child's Current Age | Years Until College | Monthly Savings (Public In-State, 100%) | Monthly Savings (Private, 100%) |
|---|---|---|---|
| Newborn | 18 years | ~$350/month | ~$850/month |
| 3 years old | 15 years | ~$450/month | ~$1,100/month |
| 5 years old | 13 years | ~$550/month | ~$1,350/month |
| 8 years old | 10 years | ~$750/month | ~$1,850/month |
| 10 years old | 8 years | ~$1,050/month | ~$2,600/month |
| 12 years old | 6 years | ~$1,600/month | ~$3,900/month |
These estimates assume 6% investment growth, 5% annual tuition inflation, and a goal of covering 100% of four-year costs. If you target 50% of costs instead, halve the monthly amounts. If you target 75%, multiply by 0.75.
Starting at birth with $300/month gives roughly the same result as starting at age 10 with $1,050/month. Earlier and smaller beats later and larger, every time.
The 529 Plan: Why It Is the Default Choice
A 529 plan is a tax-advantaged savings account designed for education expenses, named after Section 529 of the IRS tax code. Every state offers at least one, and you are not required to use your home state's plan.
Federal tax advantages: Contributions are made with after-tax dollars, but earnings grow tax-free and withdrawals for qualified education expenses are completely tax-free. No federal capital gains taxes on growth.
State tax advantages: 34 states plus Washington D.C. offer a state income tax deduction or credit for contributions to their own state's 529 plan. In states like New York (deduction up to $10,000/year for married couples) or Virginia (deduction up to $4,000/account/year), this is a meaningful benefit. Check your state's rules.
Qualified expenses: Tuition, room and board, required fees, books, supplies, computer equipment, and up to $10,000 per year for K-12 private school tuition.
The Roth IRA rollover escape hatch: Thanks to the SECURE 2.0 Act, up to $35,000 in unused 529 funds can be rolled into a Roth IRA for the beneficiary. The 529 account must be open for at least 15 years, and contributions from the last 5 years are not eligible. Annual rollovers are capped at the Roth IRA contribution limit, which is $7,500 for 2026 ($8,600 if age 50 or older). The beneficiary must have earned income equal to the rollover amount. This eliminates the old "trapped money" fear of overfunding a 529. Learn more in our 529 plan explainer.
Non-qualified withdrawals: If you withdraw for non-qualified expenses, you pay income tax plus a 10% penalty on the earnings portion only. Your original contributions are always available penalty-free.
What About Financial Aid?
A 529 plan is counted as a parental asset on the FAFSA. Parental assets reduce financial aid eligibility by a maximum of 5.64% per year. A $100,000 529 balance reduces expected aid by at most $5,640. This impact is modest.
As of the 2024-25 FAFSA cycle, distributions from grandparent-owned 529 plans no longer count as student income, which eliminated the previous disadvantage of grandparent-held accounts. If financial aid is a concern, saving in a 529 held in a parent's name is the most favorable treatment available. Custodial accounts (UGMA/UTMA) are treated as student assets, which have a 20% assessment rate versus the 5.64% parental rate.
Alternative Approaches
Roth IRA for college: Contributions to a Roth IRA (not earnings) can be withdrawn penalty-free at any time for any purpose, including education. Some families use a Roth IRA as a backup college savings vehicle because it offers flexibility: if your child gets a scholarship or skips college, the money stays available for retirement. The downside is that the 2026 contribution limit is $7,500 per year, which is much lower than 529 contribution limits, and using it for college means less money compounding for your own retirement.
I Bonds: U.S. Treasury I Bonds earn interest tied to inflation and are tax-exempt when used for education expenses (subject to income limits). They have annual purchase limits ($10,000 per person) and a one-year minimum holding period. They work as a supplement but not as a standalone strategy.
Retirement first: You cannot borrow for retirement, but students can borrow for education. A reasonable approach is to fund your own retirement first, then direct surplus savings to college. Read more in our guide on whether to invest or pay off debt, which covers the same priority framework.
Real-World Examples
Example: Marcus and Ellen, parents of a 2-year-old
Situation: They want to save for a public in-state university, estimated to cost $160,000 total by the time their daughter turns 18. They have $3,000 saved and live in a state with a 529 tax deduction.
What they calculated: With 16 years, $3,000 already saved, and a 6% investment return, they need approximately $420 per month to hit their target.
Result: They open a 529 in their state's plan to capture the tax deduction, invest in an age-based growth fund, and automate $425/month. The deduction saves them about $200 in state taxes each year, which they redirect into the 529. On track without disrupting other financial goals.
Example: Dana, single parent of a 12-year-old, starting late
Situation: Dana has $8,000 in a savings account she originally intended for college. Her daughter is six years from starting school. Dana earns $62,000/year and has $28,000 in her own retirement accounts.
What she calculated: A public in-state university will cost approximately $90,000. With $8,000 saved and 6 years to grow at 5%, she needs $1,100/month to cover costs fully. That is 21% of her take-home pay and not realistic.
Result: Dana moves the $8,000 into a 529, contributes $500/month, and plans to cover the remaining gap with a combination of merit aid, federal student loans, and her daughter working part-time during school. She keeps funding her own retirement at $300/month because the cost of not funding retirement is higher than the cost of student loans. Total federal student loan debt for a public university degree averages around $29,560 for bachelor's recipients, per the College Board's Trends in Student Aid 2025.
Common Pitfalls to Avoid
Overfunding the 529. The Roth IRA rollover helps, but the 15-year account age requirement and $35,000 lifetime cap mean you cannot simply dump everything into a 529 and figure it out later. Aim to fund the account based on realistic projections, not worst-case scenarios. You can always change the beneficiary to a sibling or relative.
Ignoring age-based allocation. A 529 invested 100% in stocks when your child is 16 is a gamble. If the market drops 30% the year before freshman year, you lose three years of savings. Age-based portfolios automatically shift to bonds and cash as college approaches. Use them unless you have a specific reason not to.
Assuming your child will get a full scholarship. Full-ride academic and athletic scholarships are rare. According to the National Center for Education Statistics, fewer than 1% of students receive full athletic scholarships. Plan for partial aid at best, and treat any scholarship money as a bonus that reduces your out-of-pocket cost.
Saving for college at the expense of retirement. Your child can take out loans for college. You cannot take out loans for retirement. Fund your retirement first, then direct surplus to college savings. Our 401(k) calculator can help you check whether you are on track.
This calculator is for educational and informational purposes only and does not constitute financial advice. College cost projections are estimates based on historical tuition inflation rates and are not guaranteed. Financial aid and scholarship outcomes vary significantly. Consult a licensed financial advisor before making college savings decisions.
