How 529 Plans Work
A 529 is a tax-advantaged investment account authorized under Section 529 of the Internal Revenue Code. You contribute after-tax dollars, invest in a menu of funds, and all growth is federal-tax-free. Withdrawals for qualified education expenses are completely tax-free. A family contributing $500/month for 18 years at 8% returns accumulates roughly $240,000 — with approximately $132,000 in gains that would face capital gains tax in a regular brokerage account. The 529 eliminates all of that friction.
State Tax Deductions: The Overlooked Benefit
34 states plus D.C. offer income tax deductions or credits for 529 contributions. Indiana offers a 20% credit on the first $7,500 ($1,500 value). States like Colorado, New Mexico, and South Carolina offer unlimited deductions. Some states require the in-state plan; others (Arizona, Kansas, Pennsylvania) allow deductions for any state plan. For no-income-tax states, choose purely on fees — Utah my529, Nevada Vanguard, and New York Direct are the top low-cost options at 0.10-0.18% expense ratios.
The SECURE 2.0 Roth IRA Rollover
Effective 2024, unused 529 funds can be rolled into a Roth IRA for the beneficiary — up to $35,000 lifetime. The account must be open 15+ years, contributions must be seasoned 5+ years, and rollovers are subject to annual Roth IRA contribution limits ($7,000 in 2026). A $35,000 Roth IRA contribution at age 20 growing at 8% for 45 years compounds to approximately $1,065,000 tax-free. This eliminates the biggest 529 objection: over-funding risk.
Qualified Expenses: Broader Than You Think
Qualified expenses include tuition, room and board, books, supplies, computers, internet access, K-12 tuition (up to $10,000/year), apprenticeship programs, and student loan repayment (up to $10,000 lifetime per beneficiary). Room and board for off-campus students qualifies up to the school's official cost of attendance allowance.
Financial Aid Impact
Parent-owned 529s are assessed at maximum 5.64% in the FAFSA formula — far more favorable than student-owned UTMA/UGMA accounts (20% assessment). The FAFSA Simplification Act eliminated the penalty on grandparent-owned 529 distributions, making grandparent 529s a powerful tool with zero FAFSA impact.
Choosing the Right Plan
Evaluate three variables in order: state tax benefit, fees, and investment quality. If your state requires the in-state plan for deductions, calculate whether the deduction outweighs any fee premium. Age-based portfolios are recommended for most families — they automatically shift from aggressive to conservative as college approaches. Target all-in expense ratios below 0.20%.
Originally published on WealthWise OS Blog.