Using a 529 for Private K-12 School in 2026

The One Big Beautiful Bill Act (OBBBA, July 2025) doubled the annual 529 K-12 withdrawal cap to $20,000 per student and expanded eligible expenses to include tutoring, curriculum, and test fees. But 13 states still don't conform — a non-conforming-state withdrawal can trigger state income tax on earnings and contribution recapture. Here's when the math works and when it doesn't.

What OBBBA changed for 2026

The TCJA (2017) first expanded 529 distributions to cover K-12 private school tuition up to $10,000 per student per year. OBBBA, signed July 4, 2025, made two significant upgrades for tax year 2026 and beyond:¹

• Annual cap doubled to $20,000 per beneficiary: Families can now withdraw up to $20,000/year tax-free at the federal level for K-12 qualifying expenses — up from $10,000.
• Eligible expenses expanded well beyond tuition: Qualifying K-12 costs now include curriculum materials, textbooks, tutoring and educational therapy, standardized test and AP exam fees, online courses, and educational software. For most private school families, this captures the large majority of school-related costs beyond just the tuition line.

What about homeschooling?

OBBBA's expanded expense categories — curriculum, books, tutoring, educational software — overlap heavily with what homeschool families spend. However, the statute still requires expenses to be connected to a student "enrolled at or attending" an elementary or secondary school. Pure homeschoolers not affiliated with an umbrella school may not qualify under the federal definition. Families homeschooling through a registered private school or state-recognized umbrella organization are on stronger footing. Check your state's homeschool laws before drawing on a 529 for homeschool expenses.

State conformity: 13 states don't recognize K-12 529 withdrawals

Federal law doesn't obligate states to follow. A 529 withdrawal that's qualified at the federal level can still be non-qualified at the state level — triggering state income tax on the earnings portion and, in some states, recapture of previously deducted contributions.³

Note on OBBBA's new expense categories: Even states that already conformed to the TCJA's original $10,000 tuition rule may not yet have passed legislation covering OBBBA's expanded categories (tutoring, curriculum, test fees). Until your state explicitly conforms to the new rules, withdrawing for non-tuition K-12 expenses carries state tax risk. When in doubt, use 529 funds only for tuition and pay other expenses from cash.

For state deduction limits and plan comparison, see the 529 plans by state guide.

The core tradeoff: K-12 vs. college accumulation

Every dollar withdrawn from a 529 for K-12 private school is a dollar that doesn't compound toward college. The opportunity cost is real: $20,000 withdrawn when your child is 8 (ten years before college) would have grown to approximately $35,800 at a 6% annual return — meaning the "true cost" of that K-12 withdrawal is nearly $36K, not $20K. Use the calculator below to see the impact on your specific situation.

When using a 529 for K-12 makes sense

Good candidates

• No state income tax (FL, TX, WA, etc.): State conformity is irrelevant. Any 529 tax-free growth on K-12 withdrawals is a pure win with no state downside.
• K-12 conforming state with a state deduction: You get a deduction on contributions AND tax-free withdrawals for K-12 expenses. A family in Ohio contributing $20,000 and withdrawing $20,000/year for K-12 effectively cycles the money through tax-free with a state deduction on the way in.
• Your college 529 is already overfunded: If grandparents have superfunded a separate 529 for college, or your own savings are well ahead of the college cost target, an existing 529 can redirect toward K-12 without hurting the college goal. See the grandparent 529 guide for superfunding details.
• You maintain two separate 529 accounts: Open one 529 specifically for K-12, funded with what you'd spend on private school anyway, and let the college account compound untouched. This eliminates the opportunity-cost problem.

Poor candidates

• Non-conforming states (NY, CA, IL, etc.): K-12 withdrawals lose the state tax benefit and may trigger state tax on earnings. You're almost always better off paying private school tuition from cash and leaving the 529 untouched for college.
• One 529 with a tight college funding gap: Every K-12 dollar you withdraw reduces your college buffer. The calculator above quantifies the exact tradeoff at your numbers.
• Child is within 3-4 years of college: The compounding gap is smaller with a short horizon, but you also have the least time to replenish if K-12 withdrawals run the account down further than expected.

The two-account strategy

The cleanest solution for families committed to private K-12: open two separate 529 accounts for the same child — one earmarked for K-12, one for college. Most major 529 plans (Utah my529, Illinois Bright Start, Fidelity) allow multiple accounts per beneficiary. You set different asset allocations (more conservative for the K-12 account since the time horizon is short — money needed in 1-5 years shouldn't be in equity-heavy age-based portfolios) and different contribution targets:

• K-12 account: Fund monthly with what you'd spend on private school, invest in stable/conservative options, draw down each year for tuition and qualifying expenses.
• College account: Fund toward your college cost target at the 529 savings calculator output, invested in age-based portfolios, untouched until college enrollment.

With two accounts, the college 529 compounds at a full 18-year rate while the K-12 account is drawn down each year. The opportunity cost problem disappears because you never cannibalize one goal for the other.

K-12 qualified expenses under OBBBA 2026

Superfunding for a K-12 account

You can superfund a 529 dedicated to K-12 using the 5-year gift tax averaging election — contributing up to $95,000 at once per donor per child ($190,000 for a married couple contributing together). A K-12 account superfunded at $95,000 draws down at $20,000/year and grows at some rate, providing 5-7 years of tax-free K-12 coverage. This is worth considering when grandparents want to fund private school tuition specifically as a gift — different from the college superfunding strategy covered in the grandparent 529 guide.

Where K-12 529 fits in the household priority stack

529 K-12 withdrawals are a discretionary use of a tax-advantaged account. Before deciding, confirm the rest of the household priorities are in order:

1. Emergency fund: 3-6 months of expenses (see emergency fund calculator)
2. Employer 401(k) match — always first
3. Term life and disability insurance in force (see term life calculator and insurance layering guide)
4. Estate documents current — especially guardian designation (see estate planning for families)
5. HSA funded if on an HDHP (see HSA strategy guide)
6. Roth IRA / backdoor Roth maxed (see backdoor Roth guide)
7. College 529 on track — then evaluate a dedicated K-12 account