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529 Plan Calculator

Finance & Investment

Project your 529 college savings plan balance at college start. Calculate total contributions and how much you'll have saved for education expenses.

Reviewed by the thecalcu.com team · Last updated July 6, 2026

🇺🇸This tool is specific to United States
$0$1,000,000
$0$5,000
118
015
015

Projected Balance at College

$50,067
Total Contributions
$35,000
Total Tax-Free Growth
$15,067
Annual State Tax Savings
$0

Breakdown

How the total splits

Total Contributions
$35,000
Total Tax-Free Growth
$15,067

This calculator computes your Projected Balance at College, Total Contributions, Total Tax-Free Growth, Annual State Tax Savings from the values you enter.

Inputs
Current 529 BalanceMonthly ContributionYears Until CollegeExpected Annual ReturnState Tax Deduction Rate
Outputs
Projected Balance at CollegeTotal ContributionsTotal Tax-Free GrowthAnnual State Tax Savings

What is a 529 Plan?

The 529 Plan Calculator projects how much you'll have saved in a 529 college savings plan by the time your child starts college, factoring in your current balance, ongoing monthly contributions, years until enrollment, and expected investment return. It also estimates the annual state tax savings if your state offers a deduction for 529 contributions. A 529 plan is a tax-advantaged account specifically for education expenses, contributions grow tax-free, and qualified withdrawals for tuition, fees, and room and board come out tax-free too. This tool exists to answer the question every parent eventually asks: am I saving enough, fast enough, to cover the cost of college when it actually arrives? If you're weighing a 529 against other savings vehicles, it pairs well with the Compound Interest Calculator to see how the tax-free growth compares to a taxable account.

Who Should Use This Calculator?

New parents setting up a 529 account for a newborn want to know what a modest monthly contribution grows into over 18 years. Grandparents contributing to a grandchild's education fund can use it to size gift-tax-friendly contributions against a target balance. Parents of teenagers with a shorter runway need to see how much contributions, rather than growth, will drive the final number. Financial planners modeling multiple funding scenarios for clients can quickly compare different contribution levels or expected returns. And families relocating between states can check whether starting fresh in a new state's plan changes their tax deduction picture enough to matter.

How to use this 529 Plan calculator

  1. Enter your "Current 529 Balance", leave it at $0 if you haven't opened the account yet.
  2. Set "Monthly Contribution" to the amount you plan to deposit each month.
  3. Adjust "Years Until College" to match your child's current age (18 minus their age, roughly).
  4. Set "Expected Annual Return" based on how aggressively your plan's portfolio is invested, higher for a younger child, lower as college nears.
  5. If your state offers a 529 tax deduction, enter the rate in "State Tax Deduction Rate"; otherwise leave it at 0%.
  6. Review "Projected Balance at College" for your headline result, then check "Total Contributions" versus "Total Tax-Free Growth" to see how much of that balance came from investment gains.

What Insights Does the 529 Plan Calculator Give You?

Projected Balance at College is the number that matters most, it tells you whether your current savings pace will realistically cover tuition. Total Contributions shows exactly how much cash you'll have put in out of pocket over the years, separate from any growth. Total Tax-Free Growth isolates the value the tax-advantaged structure actually added, compare this to what the same contributions would have earned in a taxable account to see the real benefit of using a 529. Annual State Tax Savings quantifies the yearly deduction benefit if your state offers one, which for high-deduction states like New York or Illinois can meaningfully offset your effective contribution cost.

Show formula & methodology ↓Show less ↑

Formula & Methodology

The calculator compounds monthly contributions and the starting balance forward using a standard future value of annuity approach:

FV = P(1 + r)ⁿ + M × [((1 + r)ⁿ − 1) / r]

Where:
- FV = projected balance at college
- P = current 529 balance
- M = monthly contribution
- r = monthly rate of return (annual return ÷ 12)
- n = number of months until college (years × 12)

Worked example: Starting with $5,000, contributing $250/month, over 10 years at 6% annual return (r = 0.005, n = 120):

FV = 5,000 × (1.005)¹²⁰ + 250 × [((1.005)¹²⁰ − 1) / 0.005]
FV = 5,000 × 1.8194 + 250 × 163.88
FV = 9,097 + 40,970 = $50,067

Of that, total contributions are $5,000 + (250 × 120) = $35,000, meaning tax-free growth accounts for roughly $15,067 of the final balance.

Quick Reference

Scenario Monthly Years Result (6% return)
New baby $200 18 ~$77,000
Toddler $300 15 ~$87,000
Middle schooler $400 8 ~$50,000

For a broader savings comparison, check the Savings Goal Calculator, or the 401(k) Calculator if you're balancing college savings against retirement contributions.

Frequently Asked Questions

How much can I contribute to a 529 plan each year?
There's no federal annual contribution limit written into the tax code, but the annual gift tax exclusion ($18,000 per donor per beneficiary in 2026, or $36,000 for married couples) is the practical ceiling most families use without filing a gift tax return. Some states also cap total account balances, typically between $300,000 and $550,000 depending on the state.
What happens if my child doesn't go to college?
You can change the beneficiary to another qualifying family member, a sibling, cousin, or even yourself, without any tax penalty. Since 2024, unused 529 funds can also be rolled into a Roth IRA for the beneficiary, subject to lifetime limits and a 15-year account-age requirement.
Does this calculator account for state tax deductions?
Yes, enter your state's deduction rate in the 'State Tax Deduction Rate' field and the tool estimates your annual state tax savings on contributions. Not every state offers a 529 deduction, so if yours doesn't, leave that field at 0%.
Are 529 plan withdrawals really tax-free?
Withdrawals are federal tax-free (and usually state tax-free too) as long as you use the money for qualified education expenses like tuition, fees, room and board, and required books or equipment. Non-qualified withdrawals get hit with income tax plus a 10% penalty on the earnings portion, not the full withdrawal amount.
Should I use my own state's 529 plan or shop around?
If your state offers a tax deduction for contributions, it's usually worth starting there since that's essentially free money on top of tax-free growth. If your state doesn't offer a deduction, you're free to pick any state's plan based on investment options and fees, Utah, Nevada, and Virginia's plans are commonly cited for low costs.
What expected return should I use in this calculator?
Most 529 plans use age-based portfolios that shift from stock-heavy to bond-heavy as college approaches, so a blended long-term assumption of 5-7% is reasonable for a plan opened when your child is young. If college is only a few years out, your portfolio is likely more conservative, so consider dialing the assumed return down toward 3-4%.
Can I use 529 funds for K-12 tuition?
Yes, federal law allows up to $10,000 per year in 529 withdrawals for K-12 tuition at public, private, or religious schools. Check your specific state's rules too, since not every state extends its own tax benefits to K-12 withdrawals the same way it does for college expenses.
What if I start contributing late, say when my child is already in high school?
You still get tax-free growth and any available state deduction, just over a shorter runway, so contributions matter more than growth in that case. Run the calculator with a low 'Years Until College' value to see how much of your projected balance comes from contributions versus investment gains.
Is a 529 plan better than a taxable brokerage account for college savings?
For money you're confident will go toward education expenses, the tax-free growth and possible state deduction usually make a 529 the stronger choice. A taxable account offers more flexibility if you're unsure your child will need the money for school, since 529 withdrawals for non-education purposes trigger taxes and a penalty on earnings.
How does this calculator handle the 'Current 529 Balance' field?
That starting balance is compounded forward at your expected return alongside your ongoing monthly contributions, so the projected balance reflects both what's already saved and what you plan to add. If you're starting from zero, just leave it at $0 and the projection runs purely off future contributions.
Do 529 plans affect financial aid eligibility?
A 529 owned by a parent is counted as a parental asset on the FAFSA, which reduces aid eligibility by at most 5.64% of the account value, much less punitive than assets owned directly by the student. This is one reason financial aid advisors generally recommend parent-owned 529s over student-owned accounts or UTMA/UGMA accounts.
Also known as
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