What college will actually cost when your child enrolls, how much to save each month by age, and why the 529 plan is the best tool by a wide margin.
College costs have increased at roughly 4–6% per year for decades — faster than general inflation. Projecting forward, a child born today who attends a 4-year public university in 18 years will face tuition, room, and board costs of $140,000–$200,000 in nominal dollars. Private university: $350,000–$500,000+.
| School Type | Current Annual Cost | In 10 Years (4% inflation) | In 18 Years (4% inflation) |
|---|---|---|---|
| Public in-state | $27,500/yr | $40,700/yr | $56,200/yr |
| Public out-of-state | $44,000/yr | $65,100/yr | $89,900/yr |
| Private university | $58,500/yr | $86,600/yr | $119,500/yr |
Total 4-year cost at a public in-state university for a child born today: approximately $225,000 by the time they enroll. The 529 plan is the primary tool designed for exactly this challenge.
A 529 plan is a state-sponsored, tax-advantaged investment account where contributions grow tax-free and withdrawals for qualified education expenses are completely tax-free — at both federal and state levels. 'Qualified expenses' include tuition, room and board, books, fees, computers, and K-12 tuition up to $10,000/year.
Many states also provide a state income tax deduction for contributions. California doesn't, but New York ($5,000/single, $10,000/married), Illinois ($10,000/$20,000), and most other states do. This is essentially free money — a state tax deduction on top of tax-free growth.
Starting in 2024, unused 529 funds can be rolled into a Roth IRA for the beneficiary (up to $35,000 lifetime, subject to rules). This eliminates the biggest historical risk of overfunding a 529. You can now save aggressively without worrying about what happens if your child gets a scholarship.
| Child's Age Now | Goal: Fund 50% of Public In-State | Goal: Fund 100% Public | Goal: Fund 50% Private |
|---|---|---|---|
| Birth | $175/mo | $350/mo | $425/mo |
| 3 years old | $220/mo | $440/mo | $540/mo |
| 5 years old | $280/mo | $560/mo | $680/mo |
| 8 years old | $400/mo | $800/mo | $975/mo |
| 10 years old | $580/mo | $1,160/mo | $1,420/mo |
Assumptions: 7% average annual return (age-based investment glide path), 4% annual college cost inflation, 18 years for birth cohort. These are approximations — use a 529 calculator for your exact situation.
| Option | Tax Benefit | Flexibility | Verdict |
|---|---|---|---|
| 529 Plan | Tax-free growth + withdrawals | Education expenses only (mostly) | Best choice for college savings |
| Roth IRA | Tax-free growth + withdrawals | Full flexibility; can use for college | Good secondary option; prioritize retirement |
| UTMA/UGMA Account | No tax advantage | No restrictions on use | Counts heavily against financial aid; avoid |
| Regular taxable account | No tax advantage | Full flexibility | 529 is strictly better for college savings |
| Savings account | None | Full flexibility | Loses to inflation; only for near-term needs |
Starting at 10 or 12 instead of birth means you need to save significantly more each month — but it's still worth doing. A 529 even with 6 years of growth is still a tax-free vehicle. And partial funding is valuable: covering even 25–50% of college costs through savings reduces the loan burden dramatically.
If you're starting late, also consider: in-state public universities (dramatically lower cost than private), community college for the first two years, merit scholarships (which don't reduce for savings the way need-based aid does), and work-study programs that reduce net cost.
Parent-owned 529 assets count at a maximum of 5.64% in the Expected Family Contribution (EFC) formula — meaning a $100,000 529 balance reduces need-based financial aid by a maximum of $5,640. Student-owned 529s count at 20%. This is relatively favorable compared to other assets. The bottom line: 529 savings modestly reduce need-based aid, but the tax-free growth benefit almost always outweighs this impact for most families.