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Calculator Answers

529 College Savings Calculator

Blake Boege
Written by Blake Boege · Founder, Calculator Answers

A 529 calculator is a financial planning tool designed to estimate the future value of a tax-advantaged 529 college savings plan. The calculator projects account growth by compounding an initial balance and recurring contributions at an assumed rate of return over a specified time horizon, typically until a child enters college. Many versions allow users to compare the projected balance against estimated tuition and fee targets to identify potential funding gaps. Parents and financial planners use this tool to determine the monthly savings rate required to cover future higher education expenses.

Enter your current 529 balance, monthly contribution, years until college, and expected annual return. The calculator projects your future balance, total contributions, growth, and gap or surplus against a college cost target.

Quick Answer

Project the future value of a 529 college savings plan. Enter your starting balance, monthly contributions, expected returns, and target costs to estimate savings.

$

e.g. 5,000

$

Combined family contribution; round numbers are fine. · e.g. 300

e.g. 15

%

A diversified age-based 529 portfolio often projects 5 to 7%. · e.g. 6

$

Set to 0 to skip the gap calculation. · e.g. 100,000

About this projection

A 529 college savings plan is a tax-advantaged account for qualified education expenses. Contributions grow tax-free and qualified withdrawals (tuition, fees, books, certain room and board) are federal-tax-free. State tax treatment varies, and some states offer a deduction on contributions to the in-state plan.

Educational projection only. Not investment, tax, or financial aid advice. Real returns, fees, and tax treatment vary; consult a qualified financial professional.

529 projection

Projected 529 balance

$99,516.08

$483.92 short of the $100,000.00 target.

Starting balance$5,000.00
Monthly contribution$300.00
Annual contribution$3,600.00
Years15 yrs
Total contributions$54,000.00
Estimated growth$40,516.08
Projected balance$99,516.08
College cost target$100,000.00
Gap to target$483.92

The model uses monthly compounding and end-of-month contributions. Use a real (inflation-adjusted) return rate if you want projections in today's dollars; otherwise the balance is in future nominal dollars.

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Examples

$5k start · $300/mo · 15 yrs · 6%

Final ≈ $118,000 · target $100k → surplus $18k

$0 start · $250/mo · 18 yrs · 6%

Final ≈ $96,000

$20k start · $500/mo · 12 yrs · 7%

Final ≈ $156,000

$5k start · $100/mo · 10 yrs · 5%

Final ≈ $23,000

How it works

The calculator compounds monthly. The starting balance grows at the monthly rate, and contributions are added at the end of each month.

Future value · starting × (1+r)^n + contrib × ((1+r)^n − 1) / r

Monthly rate · r = annual_return / 12

Months · n = years × 12

For projections in today's dollars, subtract an inflation estimate from the expected return to get a real return.

Is there a limit on what you can contribute?

Not a federal annual one. Federal law sets no yearly dollar cap on contributions to a 529 plan, so this calculator applies none and nothing here is being withheld from you. Two federal rules do bear on large contributions, and neither is a contribution limit:

  • Contributions are treated as gifts. For calendar year 2026 the first $19,000 given to any one person is excluded from taxable gifts under section 2503(b), set by IRS Revenue Procedure 2025-32. This amount is re-set annually.
  • A contributor may elect under section 529(c)(2)(B) to treat a lump sum as though it were spread evenly over five years for gift-tax purposes, which is why five times the annual exclusion is often quoted as a 529 maximum. It is a gift-tax election, not a contribution cap.

Individual state plans do impose their own aggregate account maximums, and those vary by state. This calculator does not model any of them.

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Disclaimer. Educational growth projection only. Does not include 529 plan fees, state tax treatment, financial aid impact, or specific plan rules. Not investment, tax, or financial aid advice.

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Frequently asked questions

A 529 is a tax-advantaged college savings plan. Contributions are made with after-tax dollars (federal); investments grow tax-free; qualified withdrawals for education expenses are federal-tax-free. Most states offer their own 529 plans, and many allow a state income tax deduction for contributions to the in-state plan.

Qualified education expenses: tuition, fees, books, supplies, certain room and board (if at least half-time enrollment), and computer equipment for school. For K-12 the cap is $20,000 per beneficiary per year for TAX YEARS BEGINNING AFTER 31 DECEMBER 2025, under 26 U.S.C. 529(e)(3)(A) as amended by Pub. L. 119-21; it was $10,000 from 2018 through 2025, and this page carried that older figure with no year attached to it until 22 August 2026. The same law widened what counts beyond tuition, adding curriculum materials, books, online materials, tutoring, standardized test fees, dual enrollment and educational therapies for distributions made after 4 July 2025. Recent law also allows limited rollovers to a Roth IRA in certain cases.

The calculator compounds the starting balance month by month at (annual return / 12) and adds the monthly contribution at the end of each month. Future value = starting × (1+r)^n + contribution × ((1+r)^n − 1) / r, where r is the monthly rate and n is the number of months.

Age-based 529 portfolios typically project a 5 to 7% nominal return over a 15- to 18-year horizon, shifting from equities to bonds as the beneficiary approaches college age. Use a number that fits the asset allocation in your specific plan. For projections in today's dollars, subtract an inflation estimate to get a real return.

No. The model uses a net return rate. Real 529 plans charge expense ratios (often 0.10 to 0.50%) and may have state-administered fees. To incorporate them, subtract the all-in fee from your expected return before entering it. Net of fees, expected returns are slightly lower than gross.

Excess 529 funds can be: changed to another qualifying family member as beneficiary, used for a sibling's college, used for K-12 expenses up to $20,000 per year for tax years beginning after 31 December 2025 (the cap was $10,000 for 2018 through 2025), or (under recent law and IRS guidance) rolled to a Roth IRA in limited cases. Non-qualified withdrawals are subject to federal income tax on earnings plus a 10% penalty.

No. This is an educational growth projection. It does not include 529 plan fees, market volatility, state tax treatment, financial aid impact, or the specific rules of any 529 plan. Consult a qualified financial professional and the 529 plan disclosure documents before contributing.