π 529 College Savings Calculator
Project your 529 balance, the future cost of 4 years, and your funding gap.
Projected 529 Balance at College Start
Projected Cost Per College Year
Estimates for planning only, not financial advice.
How to Use This Calculator
Enter what you have saved so far, what you contribute each month, how many years until college starts, and the annual return you expect. Then enter today's annual cost of the type of school you are targeting and an education inflation rate. The calculator projects your 529 balance, inflates the cost for each of the 4 college years, and shows whether you face a gap or a surplus.
Enter your Current 529 Savings and Monthly Contribution. Include contributions from grandparents if they are regular.
Set Years Until College (a newborn is 18) and your Expected Annual Return. Six percent is a common planning figure for an age-based portfolio; use less if you invest conservatively.
Enter the Current Annual College Cost for your target school type, including room and board, and an Education Inflation rate. Four percent reflects recent history; elite private schools have run hotter.
Read the funding gap. If you are short, raise the monthly contribution first: time is the lever you cannot get back, so act early.
What a 529 Plan Is and Why It Wins
A 529 plan is a state-sponsored investment account built for education. You fund it with after-tax dollars, choose investments (most plans offer age-based portfolios that get more conservative as college approaches), and the money grows free of federal tax. Withdrawals for qualified expenses, tuition, room and board, books, computers, are also federal-tax-free. More than 30 states add a deduction or credit for contributions, which is an instant return on day one. Unlike retirement accounts, there are no income limits and no annual contribution caps beyond generous state lifetime limits, and you keep control of the account no matter how old the beneficiary gets.
Education Inflation vs. Regular Inflation
College costs have risen roughly 4 to 5 percent per year for decades, about double the general inflation rate. That compounding is brutal over 18 years: a $25,000 annual cost today becomes about $50,600 at 4 percent inflation by the time a newborn starts college, and the 4-year total approaches $220,000. This is why "we will figure it out later" is the most expensive college plan. The calculator inflates each college year separately, because senior year costs more than freshman year, and your savings need to cover the whole climb, not just the first step.
The Math of Starting Early
Compounding makes early dollars worth several times late dollars. At a 6 percent return, $300 a month from birth grows to roughly $115,000 by age 18, with only $64,800 of actual contributions. Wait until age 10 to start and you must contribute about $800 a month to reach the same balance, paying $76,800 out of pocket for the same result. Every year of delay has to be bought back with much larger contributions, because you lose both the contribution years and the compounding on them. If your child is already older, the honest response is to raise the monthly amount now rather than hoping for higher returns, since chasing returns usually means taking risks that can backfire right before tuition bills arrive.
Worked Example
$5,000 saved today, $300 a month, 12 years until college, 6 percent annual return. Future value of the lump sum: 5000 x (1.06)^12 = about $10,060. Future value of contributions: 300 x (((1.005)^144 - 1) / 0.005) = about $92,400. Projected balance at college start: about $102,460. Current annual cost $25,000 with 4 percent education inflation: freshman year costs 25000 x (1.04)^12 = about $40,030, and the four years total about $170,000. Funding gap: roughly $67,500 short. Closing it needs about $330 more per month, or a head start that is already gone, which is exactly why the calculator exists: to deliver this news while there is still time to act.
Estimates for planning only, not financial advice.
Frequently Asked Questions
What is a 529 plan?
A 529 is a tax-advantaged investment account designed for education expenses, offered by states but open to residents of any state. You contribute after-tax dollars, the money grows tax-free, and withdrawals are federal-tax-free when spent on qualified costs like tuition, room and board, books, and since recent law changes, up to $10,000 per year of K-12 tuition and certain student loan repayments. Many states also offer a tax deduction or credit for contributions.
What are the tax advantages of a 529?
Three layers: tax-free growth, tax-free withdrawals for qualified education expenses, and in over 30 states, a deduction or credit on your state income taxes for contributions. There is no federal deduction for contributions, but the compounding of tax-free growth over 18 years is the real prize: it can be worth tens of thousands of dollars versus a taxable account. Some states even let you deduct contributions if you use another state's plan.
What if my child does not go to college?
You have good options. You can change the beneficiary to another family member, including yourself, with no tax penalty. You can leave the money invested for graduate school later. Since 2024, you can also roll up to $35,000 of unused 529 funds into the beneficiary's Roth IRA, subject to annual limits and a 15-year account age rule. Only non-qualified withdrawals face income tax plus a 10 percent penalty on the earnings portion.
How much should I save each month for college?
It depends on the school type, your timeline, and expected returns, but the math rewards starting early far more than contributing large amounts late. Saving $300 a month from birth at a 6 percent return grows to about $115,000 by age 18, while starting at age 10 requires about $800 a month to reach the same total. Use the calculator above with your state's flagship university cost as the benchmark, then adjust.
Are there contribution limits on 529 plans?
Each state sets a lifetime account limit, typically $300,000 to $550,000 per beneficiary, which is generous enough for almost any plan. For gift tax purposes, contributions count as gifts: you can contribute up to the annual gift tax exclusion per beneficiary each year, or use five-year superfunding to contribute five years' worth at once. There are no income limits on who can contribute.
Can I use a 529 for K-12 or graduate school?
Yes. Federal law allows up to $10,000 per year per beneficiary for K-12 tuition, and 529 funds cover graduate and professional school with no dollar cap beyond the plan limit. Apprenticeship program expenses and up to $10,000 in student loan repayments per beneficiary also qualify. Check your state's rules, because a few states tax K-12 withdrawals that the federal government allows.