Should you save for college with a 529 plan or a regular taxable brokerage account? Compare both strategies side-by-side with full tax analysis — state deductions, dividend drag, and capital gains — to see which builds more education wealth.
Scenario: Monthly contribution of $500, 18-year horizon, 7% return. New York state offers a 6.85% deduction on up to $10,000/year. 15% LTCG rate, 0% state tax on gains, 1.8% dividend yield.
| Metric | 529 Plan | Taxable Account |
| Total Value | $196,149 | $171,868 |
| State Tax Savings | $7,398 | $0 |
| Capital Gains Tax | $0 | $8,748 |
| Winner | 🏆 +$24,281 | — |
Key takeaway: The 529 plan wins thanks to tax-free growth and state tax savings. The taxable account loses ~1.4% annually to tax drag and pays ~$8,700 in capital gains taxes at withdrawal.
Scenario: Same inputs but state deduction rate = 0%. Many states including California, New Jersey, and North Carolina offer no state tax deduction for 529 contributions.
| Metric | 529 Plan | Taxable Account |
| Total Value | $188,751 | $171,868 |
| State Tax Savings | $0 | $0 |
| Winner Edge | 🏆 +$16,883 | — |
Key takeaway: Even without state tax deductions, the 529 plan wins due to tax-free growth. The taxable account's dividend tax drag and capital gains taxes still put it at a ~9% disadvantage after 18 years.
Scenario: $500/month for only 5 years, 7% return, 6.5% state deduction rate, 15% LTCG rate.
| Metric | 529 Plan | Taxable Account |
| Total Value | $36,873 | $36,008 |
| Winner Edge | 🏆 +$865 | — |
Key takeaway: With a short horizon, the difference narrows because compounding has less time to amplify the tax advantages. The 529 still wins, but the margin is much smaller. If flexibility matters more for a short horizon, the taxable account's lack of withdrawal restrictions may be appealing.
Where r = (annual return / 100) / 12, n = years × 12. Growth is federal tax-free for qualified withdrawals, and state tax deductions boost effective savings.
Each year, dividends are taxed at your LTCG rate plus state rate, reducing your effective compounding return. This is the "tax drag" that compounds over time.
Where reff = effective_return / 12. This is the pre-liquidation value after accounting for annual tax drag but before the final capital gains tax.
The 529 plan wins if this gap is positive (which it almost always is, thanks to tax-free growth and state deductions). The taxable account only wins in edge cases such as very short horizons with low/no state deductions.
| Feature | 529 Plan | Taxable Brokerage |
|---|---|---|
| Tax on Growth | None (if qualified) | LTCG 15-23.8% + state |
| Contribution Tax Treatment | After-tax | After-tax |
| State Deduction | In ~34 states | None |
| Withdrawal Flexibility | Education only + penalty | Any purpose |
| Impact on Financial Aid | Counts as parental asset | Counts as parental asset |
| Maximum Contributions | No limit effectively | None |
| Roth Rollover | Up to $35k lifetime | No |
For most families saving for college, a 529 plan is the better choice — and this isn't a close call. The combination of federal tax-free growth, tax-free qualified withdrawals, and state income tax deductions creates a powerful advantage that compounds over time.
According to College Board data for the 2025-26 academic year, average annual college costs are approximately $24,000 for public in-state and $56,000 for private institutions. A 4-year degree now typically costs $100,000-$225,000. The SECURE 2.0 Act (effective 2024) also allows up to $35,000 in unused 529 funds to roll over into a Roth IRA for the beneficiary, adding retirement flexibility to education savings.
A taxable brokerage account can be preferable in a few edge cases: (1) if you need maximum withdrawal flexibility and can't risk the 10% penalty on non-qualified 529 withdrawals, (2) if your state offers no 529 deduction and your time horizon is very short (under 5 years), or (3) if you've already maxed out the 529 gift tax limits but still want to save more for education.
Approximately 34 states plus Washington D.C. offer income tax deductions or credits for 529 plan contributions. New York offers up to $10,000 (single) or $20,000 (married) in annual deductions at a 6.85% rate. Typical deduction rates range from 4-9%. However, California, New Jersey, and North Carolina offer no state deduction — so families in those states get a smaller (but still real) advantage from 529 plans, purely from federal tax-free growth. This calculator's state deduction slider lets you model your exact situation.
If the beneficiary doesn't attend college, you have several options: (1) Change the beneficiary to another qualifying family member (sibling, cousin, or even yourself for certain education expenses). (2) Withdraw the earnings portion — you'll pay ordinary income tax plus a 10% penalty on earnings only (your original contributions are never taxed or penalized). (3) Leave the account open for future education. (4) As of 2024, roll over up to $35,000 to a Roth IRA for the beneficiary under SECURE 2.0 rules, subject to the beneficiary having earned income and the 529 account being at least 15 years old.
About 34 states plus D.C. allow you to deduct 529 contributions from your state income taxes, typically up to an annual limit (e.g., $10,000/year single in New York). You contribute after-tax dollars, then subtract that amount from your state taxable income. If your state rate is 6.5% and you contribute $10,000/year, you save $650 annually. Some states require you to use their specific 529 plan to qualify. California, New Jersey, and North Carolina do not offer any deduction.
Yes. The Tax Cuts and Jobs Act (2017) expanded 529 plan usage to include up to $10,000 per year in K-12 tuition at public, private, or religious schools. This withdrawal is tax-free at the federal level, but some states may treat K-12 withdrawals as non-qualified for state tax purposes, potentially recapturing state deductions. Check your state's specific rules before using 529 funds for K-12 expenses.
Under the SECURE 2.0 Act, starting in 2024, you can roll over up to $35,000 from a 529 plan to a Roth IRA in the beneficiary's name. Key rules: the 529 account must have been open for at least 15 years, the rollover is subject to annual Roth IRA contribution limits ($7,000 in 2025, plus $1,000 catch-up if eligible), and contributions (and earnings on contributions) made in the last 5 years are not eligible. This provides valuable flexibility — unused education savings can become retirement savings.
On the FAFSA, 529 plan assets owned by a parent are treated as parental assets. Only up to 5.64% of parental assets are counted as available for college costs in the aid formula. For example, a $50,000 529 plan would reduce aid eligibility by approximately $2,820 per year. Student-owned assets count at 20%, so keeping the 529 plan in a parent's name is much better for financial aid purposes. Grandparent-owned 529 plans are not reported as assets on the FAFSA, but withdrawals may count as student income.
Both 529 plans and taxable brokerage accounts carry market risk since they typically invest in stocks and bonds. However, most 529 plans offer age-based portfolios that automatically shift to conservative investments as college approaches, reducing the risk of major losses close to withdrawal time. In both accounts, if the market declines, your account value drops. The key difference: the 529's tax advantages don't protect you from market losses — they only protect your gains from taxes when the market goes up.
⚠️ Disclaimer: 529 plans have withdrawal restrictions and penalties for non-qualified use. State tax benefits vary widely — consult your state's specific 529 plan rules and contribution limits. This calculator assumes qualified withdrawals for 529 plans. Investment returns are not guaranteed, and past performance does not predict future results. This is an educational tool only and does not constitute financial, tax, or legal advice. Consult qualified professionals for personalized guidance on education savings strategies.