529 or a parent's Roth IRA for college in 2026: the same deposits, two tax bills
A Roth IRA can pay tuition, but only part of it comes out untaxed before retirement age. The split decides the comparison.
In the 529 at age 18
$103,974
$6,922 more than the same money in a taxable account, plus $4,018 of Kansas tax saved along the way.
| You put in | $72,000 |
| Growth, tax-free for school costs | $31,974 |
| Taxable account after tax | $97,052 |
| Kansas tax saved, 12 years | $4,018 |
Taxable account: dividends taxed every year and the remaining gain taxed at sale, at the 2026 federal capital gains rate for this income, NIIT where it applies, and your state marginal rate.
| Year | Child’s age | Put in | 529 balance |
|---|---|---|---|
| 2 | 8 | $12,000 | $12,696 |
| 4 | 10 | $24,000 | $26,962 |
| 6 | 12 | $36,000 | $42,991 |
| 8 | 14 | $48,000 | $61,001 |
| 10 | 16 | $60,000 | $81,237 |
| 12 | 18 | $72,000 | $103,974 |
Worked out by Radif Partners · How we calculate · federal rules from Public Law 119-21 and IRS Publication 970, state rules from each state · not tax advice
For money that will certainly be spent on college, a 529 beats a parent's Roth IRA on federal tax: 529 earnings come out tax-free for qualified costs, while Roth earnings withdrawn before age 59½, or before the account's 5-year period, are taxable income. The 10 % additional tax on those early Roth earnings is waived when the money pays qualified higher education expenses, but the income tax is not. What a Roth IRA offers instead is a second life: the parent's own contributions can be taken back at any time without tax, and whatever is not needed stays invested for retirement. A Roth is also smaller and more fenced in: $7,500 per person for 2026, only with earned income, and phased out at higher incomes, where a 529 has no income test. In our Kansas example, $500 a month for 12 years grows to $103,974; in the Roth, taking it all for tuition costs about $8,818 of income tax on the gain, and the 529 adds $4,018 of Kansas tax savings along the way.
Two accounts built for different exits
A 529 is an education account with a retirement side door: a capped rollover to the beneficiary’s Roth IRA once the account is old enough. A Roth IRA is a retirement account with an education side door: the 10 % additional tax on early withdrawals is waived for qualified higher education expenses. Which door you expect to use most is the question underneath the comparison.
Both accounts are funded with money that has already been taxed, and in both the growth is never taxed if the money leaves the right way. The right way differs. For a 529 it is a qualified education cost, at any age. For a Roth IRA it is a qualified distribution, which IRS Publication 590-B defines as one made after the 5-year period that starts with the first year a Roth contribution was made, and on or after age 59½, on disability, after death, or for a first home within a lifetime limit. Tuition is not on that list.
What a parent can take out of a Roth before 59½
Pub. 590-B sets an order for any distribution that is not qualified. Regular contributions come out first, and they are never taxed or charged the 10 %. Conversion and rollover amounts follow, then earnings. For a parent who only ever made regular contributions, the earnings layer is the only one that carries income tax.
That order is the core of the Roth-for-college idea. A parent who put $6,000 a year into a Roth for 12 years has $72,000 of contributions that can pay tuition with no tax at all, whatever the account is worth. Taking more than that reaches the earnings. On those, the 10 % additional tax is waived when the parent pays qualified higher education expenses for themselves, a spouse, a child or a grandchild that year, as chapter 8 of IRS Pub. 970 explains, but the earnings are still added to the parent's income.
| Money taken out for tuition | From a 529 | From a parent’s Roth IRA, before 59½ |
|---|---|---|
| Your own contributions | Tax-free | Tax-free, any time |
| Earnings, qualified college costs | Tax-free | Income tax; 10 % waived by the education exception |
| Earnings, K-12 tuition | Tax-free up to $20,000 a year per child | Income tax; the education exception list includes K-12 tuition in Pub. 970 (2025) |
| Earnings, non-school use | Income tax and 10 % | Income tax and 10 %, unless another exception applies |
The Kansas family, side by side
A married couple in Kansas with $130,000 of taxable income puts $500 a month aside from the time their daughter turns six until she starts college at 18. At an assumed 6 % a year, both accounts hold $103,974 at the end: $72,000 of deposits and $31,974 of growth. The investment can be identical. The tax is not.
In the 529, the whole $103,974 pays tuition, housing and books with no federal or Kansas tax. On top of that, Kansas lets the couple subtract up to $6,000 per beneficiary a year on a joint return, for any state's plan. Their $6,000 a year saves $335 of Kansas tax at 5.58 %, about $4,018 over the 12 years.
In one parent's Roth IRA, the $72,000 of contributions comes out free. The $31,974 of growth, if also spent on college before the parent reaches 59½, is taxed at their federal rate of 22 % and the Kansas rate, around $8,818 in all. Without the education exception, another $3,197 of additional tax would be due. A larger withdrawal can also push part of the gain into a higher bracket, so the real figure may be higher.
Federal rate on Roth earnings taken early
Federal marginal rate
22 %
| Taxable income | $130,000 |
The Roth wins in one scenario: the money turns out not to be needed for school. A scholarship, a cheaper college or a child who skips college leaves the Roth intact for the parent's retirement, where qualified distributions are tax-free. Leftover 529 money has narrower exits: another family member, the capped Roth rollover, or a taxable withdrawal (leftover 529 options).
Room to save: $7,500 against no fixed cap
Roth contributions are limited to $7,500 per person for 2026 (IR-2025-111), or less if the person's taxable compensation is smaller, according to IRS Publication 590-A. The limit is shared with any traditional IRA contribution the same year, and it shrinks to zero over an income range the IRS publishes each year for Roth eligibility. A couple who both work and are under that range can put $15,000 a year into two Roth accounts, and that is all the retirement room they get from IRAs.
A 529 has no income limit for the contributor and no yearly ceiling in federal law. The IRS questions and answers on 529 plans say contributions cannot exceed what the beneficiary's qualified education will require, which each plan turns into a maximum balance; Kansas plans stop at $550,000 per beneficiary. Large gifts run into the gift tax exclusion, $19,000 per giver and per child in 2026, before they run into any 529 rule.
Kansas tax saved by the 529 deposit
Kansas tax saved on this contribution
$335
| Subtracted from state income | $6,000 |
| Your state marginal rate | 5.58 % |
| Cap that applies this year | $6,000 |
| Back per $1,000 contributed | $56 |
Splitting the money
The two are not exclusive. A family unsure about college can fund a Roth first up to the deposit it would be comfortable spending on tuition, knowing that layer comes back tax-free, and send the rest to a 529 where every dollar of growth is tax-free for school and the state deduction applies. Families in a state without a 529 deduction lose that second advantage; the state table shows where it exists. Families who expect college costs well above the Roth limits will run out of Roth room long before they run out of tuition bills.
One limit is easy to overlook. Pub. 590-A accepts Roth contributions for a year only until the due date of that year's return, so room left unused in past years cannot be filled later. A parent who empties a Roth for tuition at 50 rebuilds it at most $7,500 a year, plus the catch-up amount for savers 50 and over ($1,100 for 2026).