How a 529 Plan Actually Works
Named after Section 529 of the Internal Revenue Code, these plans are sponsored by individual states (though you're often not required to use your own state's plan). You pick investment portfolios — usually age-based mutual fund mixes that get more conservative as college approaches — and contribute money over time, similar to a 401(k) but for education instead of retirement.
The single biggest advantage is that all investment growth is federal tax-free when withdrawals are used for qualified expenses. Compare that to a taxable brokerage account, where you'd owe capital gains tax on any growth when you sell.
Worked Example: Saving for a Newborn
Suppose new parents open a 529 plan and contribute $200/month starting the year their child is born, investing in a portfolio that averages 7% annual return.
| Age | Total Contributed | Account Balance |
|---|---|---|
| 5 | $12,000 | $14,347 |
| 10 | $24,000 | $34,835 |
| 18 (college starts) | $43,200 | $83,148 |
Nearly $40,000 of that $83,148 balance is tax-free growth — money that would have been taxed as capital gains in a regular brokerage account. That difference alone could cover more than a full year of in-state tuition at many public universities.
What Counts as a Qualified Expense
- Tuition and mandatory fees at any accredited college, university, or vocational school
- Room and board (if enrolled at least half-time)
- Books, supplies, and required equipment (including a laptop)
- Up to $10,000/year for K-12 tuition
- Student loan repayment, up to a $10,000 lifetime cap per beneficiary
Figures above are illustrative estimates based on a fixed 7% annual return and do not account for fees, market volatility, or state tax benefits. This is not financial or tax advice — consult a qualified advisor for your situation.