529s and College Costs:
the 2 questions to answer before funding one

The purchase priced to your emotions

Nothing scrambles financial judgment like your children's future — which is exactly why the industry prices to that emotion (Stories Beat Statistics: the 3 questions to ask any narrative's stories, aimed at parents). So this chapter does unemotional arithmetic on two questions: how the saving works, and the trade-off nobody says out loud.

The 529, plainly

A 529 plan is a dedicated account type for education (Taxable, 401k, IRA, Roth, HSA: the order that matters's vocabulary). You pay in after tax, it grows untaxed, and withdrawals are untaxed if spent on qualifying education costs. Roth-like treatment, for a named purpose, often with a state tax break for residents — the details vary by state and are a professional's ground.

Its constraint is that the money is locked to that purpose: take it out for anything else and you pay tax and a penalty on the growth. That's softened two ways. You can change who it's for — siblings, other relatives. And since 2024 you can roll up to $35,000 over a lifetime into a Roth IRA in the beneficiary's own name, provided the 529 has been open at least 15 years, the money being moved isn't from the last five years of contributions or growth, and it counts against that year's normal Roth limit.¹

And remember it's just a container. What grows inside follows $180,000 In, $610,000 Out: what 30 years of $500 a month does's principles, with the time horizon shortening as college approaches — so the mix should get more conservative as the date nears ($14,000 Sitting Underemployed in Checking: where each dollar belongs's logic for money with a known date).

Three accounts now compete for the same dollars

Until recently the question was whether to open a 529. It now has competition, and the three have different rules, different control at 18, and different tax endings. Nobody publishes the comparison, so here it is.

The 529. Grows tax-free for qualified education costs, and is broader than most people realize — usable for K–12, trade schools and student loan repayment, not only college.² The old objection was that the money is trapped if the child does not study. That objection is largely gone: unused funds can be converted to a Roth IRA, subject to a lifetime cap and conditions.²

The custodial account. Simple, unrestricted in what it can fund, and it hands full control to the child at the age of majority — 18, or 21 in some states.³ That is the whole trade: maximum flexibility, and no say at the end.

The Trump account. Available for children born 2025 to 2028, with $1,000 government-funded at birth where a parent holds a Social Security number. Modelled on an IRA but distributable at 18 rather than 59½, with a $5,000 annual cap.⁴ It can be opened for children born earlier, without the starter money.

Two mechanics on that last one matter and are easy to miss:

• **Employers can now contribute up to $2,500 a year, and it is not counted as the employee's

taxable income — though it counts against the $5,000 cap. Employers may also allow funding with pretax dollars through a cafeteria plan, which matters because individual contributions are not** otherwise tax-deductible.⁵

• The account converts to a traditional IRA at 18.⁵

The starter money has to be claimed. It is not automatic. That puts it in the same category as every other entitlement in this Academy: money that exists, attached to an eligibility rule and a date, and invisible unless someone tells you.

A children's savings account can beat your own

A smaller point with a surprisingly large effect, and it works for two separate reasons.⁶

Tax. Bank interest is ordinary income taxed at the account holder's marginal rate — at least 12% for most adults and commonly 22% to 24%. Interest in a child's name is the child's income, and is often fully covered by their standard deduction. So it can compound untaxed for years.

Rate. Youth accounts frequently pay far above adult high-yield accounts, though almost always on a small capped balance — published examples have run above 10% on the first $1,000, and 5% or more on the first $500.⁶ Read the cap before the headline rate, which is the same rule as 6 Questions for Any Claim, from Anyone applies to any advertised yield.

The wider policy picture, stated plainly

The same law that created the child accounts made other changes, and a household should see both halves.

The child tax credit rose from $2,000 to $2,200 per qualifying child under 17 with a valid Social Security number, with the refundable portion rising to $1,700.⁴ Against that, Medicaid work requirements of 80 hours a month begin in late 2026 and extend to parents of children aged 14 and over, with an official estimate of 16 million people losing coverage.⁴

We state both because the distributional effect is the thing a household actually experiences, and coverage of tax changes reliably leads with the half that reads as a benefit.

The trade-off, said out loud

Here is the sentence the college-savings industry leaves out: there are loans for college. There are no loans for retirement.

A parent who under-funds their own retirement to over-fund a 529 is making a transfer their child may one day have to reverse. Supporting parents whose money ran out costs the next generation far more than servicing student debt.

The honest order is the oxygen-mask rule:

1. Capture the employer match (The Only Guaranteed 50–100% Return in Finance: the 2 numbers that decide if you get it)
2. Fund retirement to plan (Pay Yourself First: automating saveFLOW)
3. Keep the buffer intact (The First $1,000 Does the Most Work: how much buffer you actually need)
4. Then education savings, sized to whatever is left

And the education purchase itself deserves the same total-cost thinking as a car (Buying a Car: negotiate the price and the financing as 2 separate deals), applied to tuition: the same degree costs wildly different amounts at different institutions, transferring from community college is a real saving, and the aid formulas price your family's finances in ways worth professional advice. Telling your child honestly what it all costs, early, is itself an education.

The takeaway

Use the 529 for what it is — the tax-advantaged container for education — but fund it after the retirement you cannot borrow to replace. Price the education like the six-figure purchase it is. And remember which way the trade-off runs: student loans are repayable by a young career, while an unfunded retirement is repayable only by the child you were trying to help.