529 K-12 Withdrawals for School Abroad

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As of August 31, 2026, one year of grades 9–12 tuition at the American School of Bangkok Green Valley is 760,000 Thai baht — about $22,900 at 33.15 baht per dollar. That is already larger than the federal K-12 cap on 529 withdrawals, which is $20,000 per beneficiary for tax years beginning after December 31, 2025. The cash-flow mistake is treating that cap as a green light to empty the plan for an international-school invoice.

This is a supporting guide for families who already keep a 529. The college-side rules — Title IV foreign universities, room and board, and plan choice — live in the 529 plan guide for expat families. Here the question is narrower: what you can actually pull for kindergarten through grade 12 while you live outside the United States, and what still trips the 10% additional tax on earnings.

Primary reader: a US parent paying school fees abroad. Secondary notes cover grandparents who superfund accounts and operators who want a clean Form 1099-Q file. The category home for related filing rules is Expat Tax & Finance.

Does a 529 cover K-12 tuition while you live abroad?

A 529 is a qualified tuition program under IRC section 529. Qualified distributions of contributions and earnings are excluded from federal income when they pay qualified higher education expenses. Since 2018, that term has included certain elementary and secondary costs. Living abroad does not cancel the account, and a US 529 is not an FBAR asset.

The college test and the K-12 test are not the same. Foreign universities qualify when they participate in US Department of Education student-aid programs. K-12 uses a different definition. IRS Publication 970 says an eligible elementary or secondary school is any public, private, or religious school that provides kindergarten through grade 12, as determined under state law.

If the school fails that test, the distribution is nonqualified. Basis (your after-tax contributions) still comes out tax-free. Earnings are ordinary income, and IRC section 529(c)(6) generally adds a 10% tax on those earnings unless an exception applies.

What the annual cap does not cover

The K-12 dollar limit is per beneficiary, across all 529 plans, not per account and not per parent. Transportation, boarding, uniforms, lunch programs, and one-time registration deposits are still not K-12 qualified expenses under the statute. The American School of Bangkok Green Valley also charges a 200,000 baht registration fee for new students (about $6,030 at the same August 31, 2026 rate). That enrollment fee is not tuition.

What changed: the $10,000 cap, the $20,000 cap, and new expense types

Public Law 119-21, section 70413, rewrote IRC section 529(c)(7) and raised the K-12 limit in section 529(e)(3). Two effective dates matter, and mixing them is how families over-withdraw in 2025.

Rule	Tax year 2025	Tax years beginning after Dec. 31, 2025
Federal K-12 dollar cap (all 529s, per beneficiary)	$10,000	$20,000
Expanded K-12 categories (curriculum, books, online materials, qualifying tutoring, tests, dual enrollment, therapies)	Distributions after July 4, 2025	Same categories, under the higher cap
College / Title IV foreign university expenses	No $10,000 K-12 cap; school must be an eligible educational institution	Unchanged
Student-loan repayment from a 529	$10,000 lifetime per individual	$10,000 lifetime per individual

Data note: dollar caps and effective dates are from P.L. 119-21 §70413 and IRS Publication 970 (2025). The IRS 529 FAQ page still quotes the older $10,000 tuition figure; use the statute and Pub. 970 together, then confirm the year on the Form 1099-Q.

The expanded K-12 list after July 4, 2025

Section 70413 now treats these as qualified higher education expenses when they are incurred in connection with enrollment or attendance at an elementary or secondary public, private, or religious school:

• Tuition.
• Curriculum and curricular materials.
• Books or other instructional materials.
• Online educational materials.
• Tuition for tutoring or classes outside the home, including at a tutoring facility, if the instructor is not related to the student and is licensed as a teacher in any US state, has taught at an eligible educational institution, or is a subject-matter expert in the relevant subject.
• Fees for a nationally standardized achievement test, an Advanced Placement exam, or college-admission exams.
• Fees for dual enrollment in an institution of higher education.
• Educational therapies for students with disabilities from a licensed or accredited provider, including occupational, behavioral, physical, and speech-language therapies.

That list is useful abroad even when the brick-and-mortar school is a weak K-12 fit. AP, SAT, and ACT fees are the same products whether the student sits them in Dallas or Chiang Mai. Dual-enrollment tuition at a Title IV college is a college expense, not a K-12-cap expense, if the institution is an eligible educational institution.

Why “as determined under state law” is the real trap

IRS Notice 2018-58 said Treasury intended to define “elementary or secondary” for 529 purposes the same way Coverdell ESAs do: kindergarten through grade 12 as determined under state law. Publication 970 still uses that sentence for both Coverdell accounts and QTPs.

A US private school licensed by a state board is an easy case. A foreign international school that issues its own diploma, charges in baht or euros, and is regulated only by the host country is not an easy case. The statute does not contain a Title IV lookup for K-12 the way it does for universities.

Families who already moved for geographic arbitrage often have a second, cleaner fact pattern: a US online private school or a homeschool program that is recognized as a school or as K-12 education under a specific US state's rules, with the child physically abroad. That is still a facts-and-circumstances file. Keep the state's definition, the school's enrollment contract, and the payment calendar in the same folder as the 529 distribution confirmation.

Do not cannibalize the college 529

A qualified K-12 withdrawal reduces the balance that would otherwise compound for a Title IV university. If the child is a realistic Oxford, McGill, or Melbourne candidate, the college distribution is the higher-certainty use. See using a 529 at foreign universities before you spend the growth on primary-school fees that may not even clear the state-law test.

Safer 529 uses for K-12 families living abroad

Use the 529 where the statute is tight and the paperwork is boring. The following sequence is the starter path for a parent who does not want a Form 5329 surprise.

1. List every school-year cash outlay in USD, using the spot rate on the payment date, and split the list into tuition, extras, tests, dual enrollment, tutoring, and therapies.
2. Verify any dual-enrollment or college-credit course against the Federal Student Aid school-code search. If the school is an eligible educational institution, treat those fees as college QHEEs, not as part of the K-12 cap.
3. Pay AP, SAT, ACT, and similar exam fees from the 529 only in the same calendar year as the expense, and keep the College Board or ACT receipt.
4. If you use a tutor, confirm the instructor is not related to the student and meets one of the three statutory tests. A local language tutor with no US license and no eligible-institution teaching history is a weak file.
5. Only then consider K-12 tuition — and only if the school satisfies the state-law definition. Stop at $10,000 in 2025 and $20,000 in 2026, across every 529 for that child.
6. Leave a written USD worksheet that ties each Form 1099-Q gross distribution to invoices. The plan administrator does not police qualification.

Grandparents and other secondary contributors should not change this order. Superfunding does not make a foreign tuition invoice qualified. It only front-loads the gift-tax exclusion into the account.

Two-child example

A married couple abroad has two children in 2026. Child A takes $1,200 of AP exams and $4,800 of dual-enrollment tuition at a Title IV US community college. Child B's international-school tuition is $18,000 and the school has not been confirmed as a K-12 school under any US state's law. Fund Child A's tests and dual enrollment from the 529. Pay Child B from taxable cash until the school question is closed. The $20,000 K-12 cap is unused on Child B rather than wasted on a nonqualified distribution.

How do you withdraw without creating a 10% penalty?

The plan issues Form 1099-Q. Box 1 is the gross distribution, box 2 is earnings, and box 3 is basis. IRS instructions say the designated beneficiary is the recipient only if the money goes to the beneficiary, to an eligible educational institution for the beneficiary, or as a trustee-to-trustee Roth IRA transfer. Otherwise the account owner is the recipient. For a parent-owned 529 sent to a personal USD account, that is usually you.

If the distribution is fully qualified, you generally do not enter it as income. If part is nonqualified, report the earnings allocable to the excess on Schedule 1 and compute the 10% additional tax on Form 5329. The 10% tax applies to the taxable earnings slice, not to the whole withdrawal.

Same-year matching is operational, not optional. If you pay spring 2027 tuition in December 2026, take the 529 distribution in 2026. Currency conversion belongs in the workpaper at the payment-date rate, not at year-end.

Penalty exceptions and state tax

The 10% additional tax has limited exceptions (death or disability of the beneficiary, and certain scholarship or academy cases). “I live in Portugal now” is not an exception. State income tax is a separate overlay. Several states do not conform to federal K-12 529 treatment. If you still file a state return, or you later resume filing in a nonconforming state, a federally qualified K-12 withdrawal can still be taxable there. California, in particular, has long treated many K-12 529 withdrawals as nonqualified for state purposes; confirm current conformity before you distribute.

Superfunding, US cash, and leftover balances

As of 2025 and 2026, the federal gift-tax annual exclusion is $19,000 per donor per donee. Form 709 instructions still allow the five-year 529 election: treat up to $95,000 ($19,000 × 5) as made ratably over five years. A married couple gift-splitting can elect up to $190,000 per beneficiary. You file Form 709 for the year of the lump sum. No gift tax is due merely because you used the election; you are using five years of exclusion in advance. If the donor dies during the five-year period, the unused slice generally returns to the estate.

You still need a US funding path. Many expats keep a Charles Schwab brokerage or checking relationship for USD cash, then ACH to the 529. The 529 itself is a US account. Do not wire school fees from the 529 in local currency and then guess the USD amount later.

Unused K-12 capacity is not a reason to over-distribute. SECURE 2.0 still allows a trustee-to-trustee 529-to-Roth IRA rollover after the account has been open 15 years, subject to the beneficiary's annual Roth limit and a $35,000 lifetime cap. That path is in IRS Topic 313. If FEIE has already wiped out current-year taxable compensation, read the contribution-basis rules in the Roth IRA guide for expats using the FEIE before you assume the child can absorb a rollover in a zero-MAGI year.

Data notes / Sources checked

• IRS Publication 970, Tax Benefits for Education — eligible elementary or secondary school; expanded K-12 expense list; $10,000 figure still printed for 2025 tuition.
• Public Law 119-21, section 70413 — expanded K-12 categories (distributions after July 4, 2025) and $20,000 cap (tax years beginning after December 31, 2025).
• IRS 529 plans: questions and answers — plan mechanics, gift-tax warning at $19,000, and the older $10,000 K-12 FAQ language.
• IRS Notice 2018-58 — intended K-12 definition aligned with Coverdell “state law” rules.
• IRS Tax Topic 313 — qualified tuition programs, 1099-Q timing, and the 529-to-Roth IRA rollover limits.
• Instructions for Form 1099-Q — who is the recipient and how earnings/basis split.
• Instructions for Form 709 (2025) — $19,000 annual exclusion and $95,000 five-year 529 election.
• American School of Bangkok Green Valley tuition schedule — 380,000 baht per semester for grades 9–12 in academic year 2026–2027, plus 200,000 baht registration.

Data note: USD conversions use about 33.15 Thai baht per dollar as of August 31, 2026. School fees, gift-tax exclusions, and IRS publications change. Re-read Pub. 970 for the year on your Form 1040 before you distribute.

Conclusion

The 2026 federal K-12 529 cap is $20,000 per child, and the July 2025 expense list is broader than tuition. That is still a small slice of a typical international-school bill, and it does not by itself prove a foreign campus is an eligible K-12 school. Use the plan first for dual enrollment at Title IV institutions, qualifying exams, and tutors who meet the statute. Keep college compounding intact unless the K-12 file is clean.

If you only remember one number pair: $20,000 is the 2026 K-12 ceiling, and 10% is what you pay on leftover earnings when the documentation does not hold.