Free 529 Plan Calculator

529 Plan Calculator

Project how much your 529 plan will grow, see the tax advantage over a taxable account, calculate your monthly contribution target, and factor in state tax deduction savings.

Tax-Free
529 growth & withdrawals
IRS Topic 313
$35K
Roth IRA rollover (SECURE 2.0)
unused 529 → Roth IRA

529 Plan Calculator

529 Plan Calculator

Child's Current Age
yr
College Start Age
Years to save13 years
Current 529 Balance
$
Monthly Contribution
$
College Savings Goal
$
Expected Annual Return 529 avg: 5–7%
Projected balance at college$95,821
Your Marginal Tax Rate for taxable comparison
State income tax rate
%
Max annual deduction
$

Enter your child's age and monthly contribution to project 529 growth

State Tax Deductions for 529 Contributions

Over 30 states offer a state income tax deduction or credit on 529 contributions. This is essentially free money — a 5% state tax rate on a $10,000 deduction means $500 back just for investing in a 529:

StateAnnual DeductionState Tax RateAnnual Savings (est.)
New York$5,000 / $10,000 MFJ6.85%$685
Virginia$4,000/yr unlimited5.75%$230/yr
Illinois$10,000 / $20,0004.95%$495
Michigan$5,000 / $10,0004.25%$213
PennsylvaniaUnlimited3.07%3.07% of contrib
CaliforniaNone$0
TexasNo state income taxN/A

States with no deduction: CA, DE, HI, KY, ME, NJ, NC (and states with no income tax: TX, FL, WA, etc.). Verify at your state's 529 plan website. Some states only allow deductions on their own plan.

The Power of Starting Early

  • $200/month from birth at 7% → $84,000 at age 18. Total invested: $43,200. Growth: $40,800.
  • $200/month starting at age 8 at 7% → $31,000 at age 18. You need $550/month to match the from-birth contribution.
  • The cost of waiting 5 years on a $200/month plan: roughly $30,000 in lost growth. Time is the most powerful variable.
  • Superfunding at birth — a grandparent contributing $90,000 at birth (5-year front-load) at 7% grows to $307,000 by age 18.

SECURE 2.0: The Roth IRA Rollover Rule (2024)

Starting in 2024, unused 529 funds can be rolled into a Roth IRA for the beneficiary — eliminating the main risk of overfunding. Rules: 529 account must be at least 15 years old, lifetime rollover limit is $35,000, subject to annual Roth IRA contribution limits ($7,000 in 2024), and rollover counts against the beneficiary's Roth contribution limit for the year. Contributions and earnings from the last 5 years are ineligible.

FAQ

529 Plans — Common Questions

What is a 529 plan and how does it work?
A 529 plan is a state-sponsored investment account designed for education savings. Contributions are made with after-tax dollars, but growth and withdrawals are completely federal-tax-free when used for qualified education expenses — tuition, room & board, books, computers, K-12 tuition (up to $10,000/year). Many states also offer a state income tax deduction on contributions. The account is controlled by the owner (parent/grandparent), not the student, which has FAFSA impact advantages.
How much should I contribute monthly to a 529?
A simple calculation: take your college goal (say $80,000 for a public in-state school), subtract your current 529 balance's future value, then solve for monthly payment. At 7% return with 13 years of saving from birth to age 18: $300/month grows to approximately $94,000. Starting later dramatically changes the equation — at age 8, you need $500/month to reach $94,000 by 18. Use our calculator to find your specific number.
529 vs Roth IRA for college savings — which is better?
529 wins if you're confident in the college path: more flexibility on qualified expenses, state tax deductions, no income limits, higher contribution capacity, and better FAFSA treatment (parent asset vs retirement asset). Roth IRA has an advantage in flexibility — withdrawals of contributions (not earnings) are penalty-free at any time for any purpose. Since SECURE 2.0, unused 529 funds can be rolled to a Roth IRA (up to $35K lifetime), making the 529 vs Roth debate mostly moot — use both if possible.
What are qualified 529 withdrawals?
Federal qualified expenses: tuition and fees, room and board (up to the school's COA if enrolled at least half-time), books and supplies, computers and technology required for enrollment, special needs services. K-12 tuition (up to $10,000/year). Apprenticeship programs registered with the Department of Labor. Student loan repayment (up to $10,000 lifetime per beneficiary). Non-qualified withdrawals face income tax + 10% penalty on earnings only — principal is always penalty-free.
What is 529 superfunding?
Superfunding allows contributing up to 5 years of annual gift tax exclusions at once ($18,000 × 5 = $90,000 per beneficiary in 2024, or $180,000 from a married couple). You make a one-time election on Form 709 — you cannot make additional gifts to that beneficiary for the 5-year period without gift tax implications. This is especially powerful for grandparents who receive inheritances or have a windfall. The upfront lump sum benefits from compound growth for the entire savings period.
How does a 529 affect FAFSA?
Parent-owned 529 plans count as a parental asset, assessed at a maximum of 5.64% in the Expected Family Contribution formula. Student-owned 529 plans count at 20%. Grandparent-owned 529s used to count as student income (assessed at 50%), but under the new FAFSA Simplification Act (2024-25 and after), distributions from grandparent 529s no longer count against aid eligibility. Grandparent 529s are now the most FAFSA-friendly structure for many families.

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