FinanceCalcs
College Savings (529) Calculator
College costs have risen faster than inflation for decades. Calculate how much you need to save, whether your current 529 balance is on track, and exactly what monthly contribution will get you to your goal — including the tax-free growth advantage of a 529 plan.
The earlier you start a 529, the more years of tax-free compound growth work in your favor. Even small monthly contributions started at birth make a significant difference by age 18.
College Savings (529) Calculator
0 years to save | 4 years of college
Projected Cost: $0
- 529 Balance
- Cost Remaining
Savings Plan Summary
Monthly Contribution Scenarios
| Monthly | 529 at 18 | Covers | Gap |
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Year-by-Year 529 Growth
| Year | Age | Contribution | Growth | 529 Balance | Cost Target | On Track? |
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"A child born today will face college costs that have doubled by the time they enroll. The 529 is one of the few tools that makes tax-free compound growth work in your favor against that trend."
— College Planning Principle
How the 529 tax advantage works
A 529 plan offers three distinct tax benefits. First, contributions may be deductible on your state tax return (in most states that have income tax). Second, earnings grow completely free of federal tax while inside the account. Third, withdrawals for qualified education expenses — tuition, fees, room and board, books, computers — are entirely tax-free at the federal level.
The compounding effect of tax-free growth is substantial over 18 years. $500/month invested at 7% with annual tax drag of 20% on gains grows to roughly $195,000. The same $500/month in a 529 at 7% grows to approximately $214,000 — a $19,000 advantage just from avoiding annual taxes on gains. Over shorter periods this matters less; the full 18-year horizon is where 529s shine.
Starting in 2024 under the SECURE 2.0 Act, unused 529 funds can be rolled over to a Roth IRA for the beneficiary (up to $35,000 lifetime, subject to annual Roth contribution limits and a 15-year account seasoning rule). This removes the primary downside of overfunding a 529 — making it a more flexible vehicle than it was previously.
lightbulb 2024 College Costs (All-In Estimate)
| School Type | Annual Cost Today | 4-Year Total |
|---|---|---|
| Community College | ~$12,000 | ~$48,000 |
| Public In-State | ~$28,000 | ~$112,000 |
| Public Out-of-State | ~$46,000 | ~$184,000 |
| Private 4-Year | ~$58,000 | ~$232,000 |
| Top Private / Ivy | ~$80,000 | ~$320,000 |
At 5% annual tuition inflation, a $58,000 private school today costs ~$94,000/yr in 10 years and ~$153,000/yr in 20 years. Starting early is the only practical response.
529 FAQs
What if my child doesn’t go to college?
Several options exist. You can change the beneficiary to another family member (sibling, cousin, even yourself) with no penalty. Since 2024, up to $35,000 can be rolled to a Roth IRA for the beneficiary after 15 years. The account can sit indefinitely — if your child later pursues graduate school, trade school, or continuing education, those are also qualified expenses. Non-qualified withdrawals return principal penalty-free; only earnings face tax plus the 10% penalty.
How does a 529 affect financial aid?
A parent-owned 529 is assessed at 5.64% in the FAFSA formula (compared to 20% for student-owned assets). This means a $50,000 parent 529 reduces financial aid eligibility by a maximum of $2,820 per year — a relatively small impact. A grandparent-owned 529 used to be more problematic but under the new FAFSA Simplification (effective 2024–2025), grandparent 529 withdrawals no longer count as student income on the FAFSA.
Can I contribute a lump sum?
Yes. 529s allow superfunding — contributing up to 5 years of the annual gift tax exclusion at once ($90,000 per beneficiary in 2024, or $180,000 for married couples filing jointly). This must be reported on a gift tax return with an election to spread it over 5 years. No contributions from that donor to that beneficiary for the subsequent 4 years without potential gift tax implications.
Which state’s 529 should I use?
Most states allow you to use any state’s 529 plan. If your state offers a tax deduction for 529 contributions, use your state’s plan first. If your state has no income tax or no deduction, compare plans nationwide by investment options and fees. Vanguard, Fidelity, and Schwab administer low-cost plans in several states that are available to all US residents.
Terminology
529 Plan
A tax-advantaged savings account for education expenses, named for Section 529 of the Internal Revenue Code. Two types: college savings plans (investment accounts) and prepaid tuition plans. The calculator models the more common savings plan type.
Qualified Education Expenses
Expenses eligible for tax-free 529 withdrawals: tuition and fees, room and board, books and supplies, computers and technology required for enrollment, K-12 tuition (up to $10,000/year), student loan repayment (up to $10,000 lifetime), and apprenticeship programs.
Tuition Inflation
The rate at which college costs increase annually. Historically 5–8% per year, far above general CPI inflation. Even at 5%, a $30,000/year in-state college today costs $48,900 in 10 years and $79,600 in 20 years. This is why future cost projections matter so much more than current cost when planning.
Superfunding
A strategy allowing 5 years of annual gift tax exclusions ($18,000/year in 2024 = $90,000) to be contributed to a 529 in one year without gift tax consequences. Must be elected on Form 709 and no further gifts made to that beneficiary for 4 years.
SECURE 2.0 Roth Rollover
Beginning in 2024, up to $35,000 in unused 529 funds can be rolled to a Roth IRA for the beneficiary, tax and penalty-free, subject to: 15-year account seasoning, annual Roth contribution limits, and the beneficiary having earned income. Eliminates the major overfunding risk.
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