🎓 529 College Savings Calculator

Find out how much you need to save each month in a 529 plan to hit your college cost goal before your child starts school.

Required Monthly Contribution

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Years to Save — Required Annual — Future Value of Current Savings — Projected Total at Target Age — Shortfall vs. Planned Contribution —

Year-by-Year Growth Projection

Year	Child's Age	Contributions to Date	Projected Balance

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What Is a 529 College Savings Plan?

A 529 plan is a tax-advantaged investment account designed specifically for education expenses. Contributions grow tax-free, and withdrawals are tax-free when used for qualified education costs like tuition, room and board, books, and fees. Many states also offer a state income tax deduction or credit for contributions, making 529 plans one of the most efficient ways to save for a child's future education. Unlike a general brokerage account, the tax-free growth compounds meaningfully over the 10-18 years most families have to save.

How This Calculator Works

This tool projects the future value of your current 529 balance using compound growth at your expected annual return, then figures out how much monthly savings you would need to close the gap to your total college cost goal. It uses the standard future-value-of-annuity formula: contributions compound monthly at your expected rate until your child reaches the target age, and the required monthly payment is solved algebraically so the account reaches your goal exactly on schedule.

Why Starting Early Matters

The single biggest lever in college savings is time, not contribution size. A dollar saved when your child is 3 has 15 years to compound, while a dollar saved at age 13 only has 5 years. Because of compounding, waiting even five years to start can nearly double the monthly contribution required to hit the same goal. Use the year-by-year table below to see how quickly the balance accelerates in the later years as investment growth outpaces new contributions.

Choosing an Expected Return Assumption

Most 529 plans offer age-based portfolios that start aggressive (more stocks) when your child is young and shift to conservative (more bonds and cash) as college approaches. A 5-7% average annual return is a reasonable long-term planning assumption for a diversified age-based portfolio, though actual returns will vary year to year and market performance is never guaranteed. Consider running this calculator with a lower return assumption (e.g., 4%) to see a more conservative required contribution.

What Counts as a Qualified 529 Expense

Qualified expenses include tuition and fees, room and board (if enrolled at least half-time), required books and supplies, and computers used primarily for schoolwork. Up to $10,000 per year can also be used for K-12 tuition, and up to $10,000 lifetime can go toward student loan repayment. Non-qualified withdrawals are subject to income tax plus a 10% penalty on the earnings portion, so it pays to plan your target contribution amount realistically rather than over-saving.

Adjusting Your Plan Over Time

College costs, investment returns, and family finances all change over the years you're saving. Revisit this calculator annually, updating the current savings balance and remaining years, to keep your required monthly contribution accurate. If a market downturn shrinks your balance, the calculator will show a higher required contribution going forward; a strong market year may let you reduce it. Pairing 529 planning with a broader household budget from tools like our loan calculator or mortgage calculator can help you see the full financial picture.

State Tax Benefits and Plan Selection

Over 30 states offer a state income tax deduction or credit for 529 contributions, but you're not required to use your own state's plan — you can shop for the lowest fees and best investment options nationwide, though you may give up the state tax break by doing so. Compare expense ratios, historical performance of age-based portfolios, and any state-specific match programs before choosing a plan, since fees compound negatively the same way returns compound positively.

よくある質問

How much should I have saved for college by my child's age?

A common rule of thumb is to have roughly one year of projected college costs saved by the time your child starts high school, but the right number depends on your total goal, whether you're targeting public or private school costs, and how many years remain. Use this calculator with your specific goal amount for a personalized target.

What if I can't afford the required monthly contribution?

Save what you can consistently rather than nothing at all. Even partial funding significantly reduces future student loan burden, and you can combine 529 savings with financial aid, scholarships, and student loans to cover the rest. Revisit the calculator periodically as your income grows.

Can I use a 529 plan for any college?

Yes. 529 funds can be used at any accredited college, university, or vocational school in the U.S. and many international institutions, regardless of which state's 529 plan you use.

What happens to unused 529 funds?

You can change the beneficiary to another family member, use up to $35,000 to fund a Roth IRA for the beneficiary (subject to conditions), or withdraw the funds and pay income tax plus a 10% penalty on the earnings portion only.

Does this calculator account for financial aid or scholarships?

いいえ。このツールは、入力した費用目標に向けた貯蓄の増え方を予測するだけで、見込まれる奨学金、給付型奨学金、学生ローンは考慮しません。これらは実際の自己負担額を大きく減らす可能性があります。

この計算機は金融アドバイスですか?

いいえ。このツールは教育目的の見積もりを提供するのみで、金融、税務、投資に関する助言ではありません。投資リターンは保証されません。ご自身の状況に応じた助言については、資格のあるファイナンシャルアドバイザーまたは税理士にご相談ください。