Using a 529 for Private K-12 Tuition: What Physician Parents Should Know

The private school tuition bill arrives on a schedule that has nothing to do with your call schedule. If your kids are in private school, you already know the number by heart. What you may not know is that the money sitting in their 529 account can legally pay part of that bill under federal law, and that whether it's a sensible use of the account depends almost entirely on which state you file your return in.

Most of what's written about 529 accounts assumes college. That's how these accounts started, and college is still the use most of the rules were written around. But federal law has allowed a limited annual withdrawal for elementary and secondary school since 2018, and that ceiling doubled beginning in 2026. If you're already writing private school checks, this rule is aimed squarely at you, which is why it's worth understanding what it does and doesn't cover before you route a tuition payment through the account.

If you're still working out where college money should sit in the first place, our comparison of 529 accounts, Roth IRAs, and taxable brokerage accounts covers that ground. If you've already front-loaded contributions, the five-year superfunding rules interact with everything below. This article is about the narrower question of pulling money back out for grade school.

What Federal Law Allows at the K-12 Level

The Internal Revenue Service states the rule plainly in its guidance on qualified tuition programs, which is the formal name for 529 accounts, abbreviated "QTP." Expenses "in connection with a designated beneficiary's enrollment or attendance at an elementary or secondary school are limited up to a total amount of $20,000 per year ($10,000 limit before Dec. 31, 2025) from all of the designated beneficiary's QTPs."

Two things changed recently, and both matter to you. The annual ceiling doubled from $10,000 to $20,000 for distributions taken after December 31, 2025. Separately, the list of what counts at the K-12 level widened well beyond tuition for distributions taken after July 4, 2025.

The Internal Revenue Service now lists K-12 qualified expenses as tuition, curriculum materials, books, tutoring fees, standardized test fees, dual enrollment fees, and educational therapies for students with disabilities provided by a licensed or accredited practitioner. If you have a child in reading intervention, or receiving speech or occupational therapy from a licensed provider, that last category may turn out to be more relevant to your household than the tuition line itself. The fuller treatment of education tax benefits lives in Internal Revenue Service Publication 970.

The mechanics here differ from the college rule in a way that's easy to skim past. At the college level there's no flat dollar cap; qualified expenses are measured against what the school actually charges, and room and board can count for a student enrolled at least half time. At the K-12 level it's a flat annual number, full stop. Anything above that number is a nonqualified distribution, and the earnings portion may be taxed, generally with a 10 percent additional federal tax on those earnings unless an exception applies.

The Ceiling Is Per Student, Not Per Account

The phrase doing the most work in that Internal Revenue Service sentence is "from all of the designated beneficiary's QTPs." The $20,000 is a per-child number aggregated across every 529 account naming that child. It isn't a per-account number, and it isn't a per-parent number.

This catches some physician families, because you're often not the only person who opened an account. A grandparent opened one when the baby came home. Your spouse's parents opened another after the second child. You opened a third once your attending income started. That's three accounts for one child sharing a single annual ceiling. The plan administrators don't coordinate with each other. If more than one account might fund tuition for the same child in the same year, tracking the combined total falls to you.

The other side of that rule works in your favor. Because the ceiling is per child, if you have three kids in private school you have three separate ceilings rather than one shared pool. That's real capacity if the accounts are funded.

Federally Qualified Can Still Be State Non-Qualified

Federal law defines what's federally qualified. Your state writes its own income tax code, and it doesn't automatically follow along. A withdrawal that's perfectly clean on your federal return can land as a nonqualified withdrawal on your state return, in the same year, for the same tuition payment.

A January 2026 review of state rules by Savingforcollege.com found a group of states that do not recognize K-12 tuition as a qualified 529 expense for state purposes. State legislatures revisit this, so the list isn't static, and the only reliable check is your own state's current rule for the current tax year.

New York is a documented example. The state's own 529 program tells account owners directly that the New York State Department of Taxation and Finance "has determined that K-12 tuition expenses are considered nonqualified withdrawals for New York State tax purposes." That same page adds that the department "has not yet determined" whether the newly expanded K-12 expenses will be treated as nonqualified as well. If you file in New York, the tutoring and testing categories are an open question rather than a settled benefit.

California is another. ScholarShare 529, the state's own plan, states that while tuition at a public, private, or religious elementary, middle, or high school "can be withdrawn free from federal tax," for California taxpayers "any earnings portion of these withdrawals are subject to state income tax and an additional 2.5% California tax." That 2.5 percent sits on top of ordinary California income tax on the same earnings. The plan's own answers on withdrawals carry the full language.

Two Separate Ways a State Can Take the Benefit Back

The first is tax on the earnings portion. If your state treats the withdrawal as nonqualified, the growth inside the account becomes state taxable income in the year you withdraw it. On an account that's been invested since your child was small, the earnings portion can be a meaningful share of the check.

The second is recapture of a deduction or credit you already claimed. Many states give a state income tax deduction or credit for 529 contributions, and some of those states add previously deducted contributions back into your state taxable income in the year you take a nonqualified withdrawal. Recapture reaches the contribution side, not only the earnings, which is why a newer account with almost no growth can still generate a state tax bill. The two can also stack in the same year, on the same withdrawal.

The table below shows how a single K-12 tuition withdrawal can be treated two different ways on two returns you file for the same year.

A Few Months Isn't a Compounding Window

The core benefit of a 529 account is that investment growth isn't taxed when it's used for qualified education expenses. Growth needs time in the account to happen at all. When a dollar goes in during August and comes out the following January to pay a tuition installment, the tax-free growth feature has almost nothing to work with. The account is functioning as a checking account with paperwork, not as a long-term savings vehicle.

That doesn't make it pointless. In states that both conform on K-12 and offer a deduction or credit for contributions, the state tax break on the way in is doing the real work. Recognizing which of the two benefits you're actually reaching for tends to clarify the decision, because they have different requirements and different failure modes.

Short holding periods raise a practical question about how the money is invested while it waits. Money you plan to spend within a school year sits in a different position than money earmarked for a freshman year a decade out. The Securities and Exchange Commission's investor bulletin on 529 plans points out a constraint that matters here: account owners can generally change investment options only twice per calendar year, or when the beneficiary changes. That same bulletin notes that plan fees and expenses reduce what you keep, which is a larger proportional consideration on money that's only in the account for a few months.

The Trade-Off Against Leaving the Money for College

A useful way to see this decision is that it's a cash flow question wearing a tax question's clothes. There are really two versions of it.

In the first version, you're paying tuition from your income anyway, and you're deciding whether to run those dollars through a 529 account first to capture a state tax break. Your total spending doesn't change. What changes is the tax character of the money and the paperwork attached to it.

In the second version, you're withdrawing from an existing balance instead of paying from income. Here, your total spending does change, and so does the balance available later. Every dollar spent on eighth grade isn't there for freshman year. Some physician households can carry both bills without strain and some can't, and the honest version of that question is about your household's cash flow rather than about the tax code.

The aid question sits nearby and often gets tangled into this one. If you've wondered whether your income already puts college aid out of reach, we walked through how that actually works in our piece on physician income and college aid. The short version is that the answer is more layered than it first looks, and it's worth knowing before you decide how much of the 529 balance to spend early.

Using the Account as a Pass-Through for a State Deduction

Where a state both conforms on K-12 and offers a deduction or credit for 529 contributions, some families contribute money and then withdraw it for tuition within the same year. The money passes through the account rather than resting in it. The point isn't growth. The point is that the contribution generates a state tax benefit the family would not otherwise get for a tuition payment they were making anyway.

Several states have written rules that limit this. Savingforcollege.com's review of state rules notes that Montana and Wisconsin impose holding-period requirements, with Wisconsin adding back to state taxable income any previously deducted contribution distributed within 365 days, and that Michigan and Minnesota calculate the state tax benefit on contributions net of distributions, which cancels the effect. State deduction and credit caps also tend to be modest relative to a private school bill, so the benefit is usually a slice of the tuition rather than a meaningful fraction of it.

One more constraint shapes this. As the Securities and Exchange Commission bulletin above notes, state tax incentives are often limited to your own state's plan, so a pass-through generally only works in the plan your state sponsors. If your money sits in an out-of-state plan you chose for its costs or investment lineup, the deduction may not be available to you at all.

And if you might move, this whole calculation moves with you. Changing states changes which rules apply to next year's tuition payment, and a state that recaptures deductions may still look back at ones you claimed while you lived there. Physicians relocate for jobs often enough that this is worth checking alongside the other items in the state tax questions that come with a new attending contract.

How the Leftover-Funds Roth Rollover Fits In

The other recent change to these accounts pulls in a different direction. Under the SECURE 2.0 Act, a 2022 retirement law, unused 529 money can be rolled into a Roth Individual Retirement Account for the same beneficiary, subject to conditions the Internal Revenue Service lays out alongside the K-12 rules: a $35,000 lifetime limit per beneficiary, a requirement that the account has been maintained for the beneficiary for at least 15 years, a direct trustee-to-trustee transfer, and annual amounts that fit within the beneficiary's Roth contribution limit for the year. We covered the details in our article on leftover 529 money and the Roth rollover.

These two changes interact in a way worth naming. The old fear about 529 accounts was overfunding, the worry that money committed for college would be stranded if a child got a scholarship or skipped a traditional path. The rollover route softens that fear, which means a dollar left in the account now has more places it can end up. Spending the balance down on grade school reduces what could later take that route.

The 15-year requirement adds a timing wrinkle to any pass-through idea. An account that has been open for your child since kindergarten has been building that clock. A brand-new account opened purely to route this year's tuition through starts its own. Guidance on exactly how the clock applies when accounts are newly opened, transferred, or have their beneficiary changed is still developing, which is a good reason to have a tax professional look at the specific accounts rather than reasoning from the general rule.

The Details That Usually Decide It

When this gets worked through with a planner and a tax preparer, the same short list of facts tends to settle the question. None of them are about the tuition amount.

• Whether your state treats K-12 tuition as a qualified 529 expense for state income tax purposes this year, and separately, whether it has taken a position on the newly expanded K-12 expenses.
• Whether you've claimed a state deduction or credit for contributions in prior years, and whether your state recaptures those on a nonqualified withdrawal.
• Whether the withdrawal replaces money you'd otherwise pay from income, or simply changes how money you're already spending is routed.
• How many years remain before the first college bill, and how many children are drawing on the balances you've built.
• Whether grandparents hold accounts for the same child, since the annual ceiling is shared across every account naming that student.
• Whether a move to another state is likely before the next tuition year, which can change the state answer without changing anything else.

The federal side of this is now fairly clear and fairly generous. The state side is where the outcome is actually determined, and it varies enough that general guidance can only take you to the edge of the question. Your tax preparer can tell you how your state currently treats these withdrawals; your plan's disclosure documents will tell you what the plan itself permits.

Your state's rule is the deciding detail here. Two physician households with identical incomes, identical tuition bills, and identical account balances can reasonably land in different places on this. If you'd like help fitting this into a college funding plan and a tax picture that already has a lot moving in it, our CFP® professionals work through exactly these trade-offs with physician families. The first conversation happens at physicianfamily.com/start.

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