What is a 529 plan and how does it work?

A 529 plan is a tax-advantaged savings account designed specifically for education expenses. Contributions are made with after-tax dollars, but earnings grow tax-free and qualified withdrawals — tuition, fees, books, room and board — are also tax-free at the federal level. Most states also offer a state income tax deduction for contributions. Money can be used at any accredited college, university, trade school, or K-12 institution (up to $10,000/year for K-12).

How much should I save in a 529 each month?

A common rule of thumb is to save one-third of expected college costs before your child starts, letting the rest come from income and loans. For a public in-state school averaging $11,000/year in tuition, $300–$400/month from birth gets you close by age 18 assuming 6% returns. For a private university at $45,000/year, $800–$1,200/month is a more realistic target. This calculator lets you model exactly how your monthly amount stacks up.

What happens to 529 money if my child does not go to college?

You have several options. You can change the beneficiary to another family member (sibling, cousin, even yourself) with no tax consequences. Starting in 2024, unused 529 funds can be rolled over into a Roth IRA for the beneficiary — up to $35,000 lifetime and subject to annual IRA contribution limits (account must be open 15+ years). If you take a non-qualified withdrawal, earnings are subject to income tax plus a 10% penalty.

How much can I contribute to a 529 plan per year?

529 plans have no annual contribution limit, but contributions are considered gifts for federal tax purposes. In 2026, the annual gift tax exclusion is $18,000 per donor per beneficiary (indexed for inflation). Superfunding allows a lump sum of up to $90,000 ($180,000 for married couples) in a single year using five years of gift tax exclusions at once, with no additional gifts to that beneficiary for five years.

What is the average cost of college in the United States?

According to the College Board, average published annual costs in 2024–2025 are approximately $11,610 for in-state public universities (tuition and fees only) and $43,505 for private nonprofit universities. With room and board, total costs rise to roughly $28,840 for public schools and $58,600 for private schools. College costs have historically grown at 3%–5% per year, so projecting for a newborn should use inflated figures for accurate planning.

Should I open a 529 for a newborn or wait?

Open it as early as possible — ideally at birth or before. The earlier you start, the more time compound growth has to work. A $300/month contribution started at birth grows to roughly $97,000 by age 18 at 6% returns. Starting the same contribution at age 5 yields about $60,000 — a $37,000 difference from just five fewer years of compounding. Even small early contributions significantly outperform larger late contributions.

Can 529 funds be used for trade schools and community college?

Yes. Qualified 529 withdrawals can be used at any institution that participates in federal financial aid programs — including community colleges, trade and vocational schools, and many foreign universities. Eligible expenses include tuition, required fees, books, supplies, computers, and room and board for students enrolled at least half-time.

529 Calculator — Projected Balance & College Coverage

Estimates your 529 plan balance at college, total contributions, growth, and years of college costs covered.

How to Use This 529 Calculator

This 529 calculator projects your college savings plan balance from now until your child starts school. Enter your child's current age, the age they will start college, your current 529 balance, the monthly contribution you plan to make, and the expected annual return. The calculator shows your projected 529 balance at college, total contributions, total tax-free growth, and how many years of average college costs the balance would cover. Use the share button to save a link to your exact scenario.

For long-term retirement savings alongside college planning, also run our IRA calculator to compare Roth and Traditional IRA growth alongside your 529.

How 529 Plan Growth Is Calculated

The projected balance combines two components, both using monthly compounding:

Future Value of existing balance: FV = Balance × (1 + r)^t

Future Value of monthly contributions: FV = Monthly × ((1 + r)^t − 1) / r

Where r = monthly interest rate (annual ÷ 12) and t = total months until college. The two results are added together for the projected total balance.

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Average College Costs and How Much to Save

College costs vary significantly by institution type. Using the College Board's 2024–2025 averages as a baseline, here is what to target by school type:

Public in-state (tuition + fees + room/board): ~$28,840/year → $115,360 for 4 years
Public out-of-state: ~$46,730/year → $186,920 for 4 years
Private nonprofit: ~$58,600/year → $234,400 for 4 years

College costs have historically grown at 3%–5% per year. For a child born today, a reasonable projection for 18 years out uses 4% annual cost inflation — meaning a $30,000/year school today may cost $60,000/year in 2044. Factor this into your monthly savings target.

529 Tax Advantages You Should Not Miss

The tax-free growth in a 529 is significant. At 6% annual return, $300/month over 13 years generates roughly $37,000 in interest. In a taxable account at a 22% federal rate, that interest would be reduced by ~$8,140. In a 529, all $37,000 is yours tax-free for qualified education expenses. Add any state income tax deduction on contributions and the advantage compounds further.

Key 529 tax facts:

Earnings grow 100% federal tax-free
Qualified withdrawals are 100% federal tax-free
34 states offer a full or partial state income tax deduction for contributions
Starting 2024: up to $35,000 can roll to a Roth IRA if unused (15-year account rule applies)

529 vs. UGMA/UTMA: Which Should You Use?

A UGMA/UTMA (custodial account) offers more investment flexibility — any stock, bond, or ETF — but gains are taxed annually and withdrawals for any purpose are taxed. A 529 has limited investment options (typically age-based funds), but all growth is tax-free for education expenses and the account stays under your control (unlike UGMA/UTMA, which transfers to the child at majority). For most families, a 529 is the superior choice unless you anticipate private K-12 tuition needs beyond $10,000/year or want maximum investment flexibility.

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How Much Should I Contribute Each Month?

A rough guideline: aim to save one-third of projected college costs before enrollment, funding the rest with income during college and, if needed, student loans or scholarships. For a family targeting a $120,000 total college cost, saving $40,000 before enrollment is a reasonable goal. At 6% return with 13 years to go, that requires about $175/month. This calculator lets you dial in the exact amount for your situation.

For a broader view of how much of your paycheck to allocate, use our paycheck calculator to model take-home pay and how a 529 contribution fits your budget.

Opening and Managing a 529 Plan

You can open a 529 plan directly through your state's plan or through a national provider like Fidelity, Vanguard, or Schwab. You are not required to use your home state's plan — compare state plans for the best investment options and fee structures. Low-cost index funds are the default choice for most 529 accounts. Age-based portfolios automatically shift from stocks to bonds as college approaches, reducing risk in the final years.

Financial Disclaimer

This calculator is for planning and educational purposes only. It is not financial advice. Investment returns are not guaranteed; actual 529 plan performance depends on the investments chosen. College cost projections are estimates based on historical averages. Tax treatment varies by state. Consult a qualified financial advisor or tax professional for your specific situation.

529 College Savings Calculator