Form 1099-Q Instructions: Boxes, Taxable Portion, and Penalty

Form 1099-Q instructions come down to a single question: did the money withdrawn from the 529 plan or Coverdell ESA go to qualified education expenses? If it did, you owe no tax and generally file nothing extra. If it didn’t, a portion of the earnings shown on the form becomes taxable income, and a 10% penalty may apply on top. Everything else on the form is the arithmetic you need to answer that question.

Reading the Boxes

The form splits your withdrawal into pieces you’ll use for the calculation.

Box 1 is the gross distribution: the total pulled from the account during the year, whether paid to you, to the student, or directly to the school.
Box 2 is earnings — the investment growth portion. This is the only part that can ever be taxed.
Box 3 is basis, meaning your original after-tax contributions. This money is never taxed again, no matter how it was spent.
Box 4 flags a trustee-to-trustee transfer. Box 4a is a transfer between education plans; Box 4b is a rollover from a 529 to a Roth IRA.
Box 5 tells you whether the account is a 529 plan or a Coverdell ESA.

Box 1 should equal Box 2 plus Box 3.

Whose Return the Form Belongs On

The recipient name and Social Security number on the 1099-Q determine who reports any taxable amount. For a 529 plan, the plan lists the beneficiary (usually the student) as the recipient when the distribution is paid to the student or directly to the school. When the payment goes to the account owner instead, the account owner is the recipient. For a Coverdell ESA, the form always goes to the beneficiary.¹

That routing decision matters. If the form carries the student’s SSN and any portion turns out to be taxable, the income lands on the student’s return, typically at a lower bracket. If it carries the parent’s SSN, the parent reports it.

What Counts as a Qualified Education Expense

For college and other eligible postsecondary schools, qualified expenses include tuition and required fees, books, supplies, and equipment required for coursework, and computers, software, and internet access used primarily by the student while enrolled. Room and board qualifies when the student is enrolled at least half-time, capped at the greater of the school’s published room and board allowance for federal aid purposes or the actual charge for school-owned housing. Special needs services connected to enrollment also qualify.²

The room and board cap catches families with off-campus renters. You can only count up to the school’s published cost-of-attendance figure for off-campus housing; anything above that becomes a non-qualified expense. The financial aid office publishes that number.

Two other categories qualify for 529 plans:

Fees, books, supplies, and equipment for a registered apprenticeship program certified by the Secretary of Labor under the National Apprenticeship Act.²
Principal or interest on qualified student loans, subject to a $10,000 lifetime cap per beneficiary across all 529 plans. A separate $10,000 lifetime cap applies for the beneficiary’s sibling.²

For K-12, 529 plans as of 2026 cover tuition, curriculum and curricular materials, books, online educational materials, certain tutoring, standardized test and AP exam fees, dual enrollment fees, and educational therapies for students with disabilities. The K-12 aggregate cap is $20,000 per beneficiary per year across all 529 plans.² Coverdell ESAs cover a wider K-12 list that includes room and board, uniforms, and transportation.³

Subtract Tax-Free Aid and Credit-Claimed Expenses First

Before you compare distributions to expenses, take two subtractions off the top.

First, reduce total qualified expenses by any tax-free educational assistance the student received: scholarships, grants, employer-provided tuition assistance, and veterans’ education benefits. If tuition was $15,000 and a scholarship covered $5,000, only $10,000 of expenses remain to offset your 529 withdrawal. Skipping this step is one of the most common 1099-Q errors, and the IRS cross-references scholarships from Form 1098-T against your distribution.

Second, subtract any expenses you used to claim an education tax credit. The same dollar cannot support both a tax-free 529 distribution and the American Opportunity Credit or Lifetime Learning Credit. Many families deliberately leave $4,000 of tuition unpaid by the 529 so it can support the American Opportunity Credit (worth up to $2,500), and route the 529 distribution to other qualified costs. Computer equipment and internet access are useful here: they qualify for 529 distributions but generally do not qualify for education credits, so they’re a natural fit for 529 dollars.⁴

Calculating the Taxable Portion

If adjusted qualified expenses equal or exceed Box 1, the entire distribution is tax-free.

When Box 1 is larger, some of the earnings in Box 2 becomes taxable. Divide adjusted qualified expenses by the gross distribution. That fraction is the tax-free share of earnings. The rest of the earnings is taxable.

Worked example. Box 1 is $20,000, Box 2 is $4,000, and adjusted qualified expenses are $15,000. The tax-free ratio is $15,000 / $20,000, or 75%. Taxable earnings are 25% of $4,000, or $1,000. That $1,000 is added to gross income. Box 3, the basis, stays untaxed regardless.

When one beneficiary has multiple 1099-Q forms from different plans, combine the distributions and run the calculation on the total for that beneficiary against that beneficiary’s total qualified expenses.

Reporting on Your Return

If the distribution is fully covered by qualified expenses, you generally don’t report it. Keep the 1099-Q, tuition statements, receipts for books and equipment, and the school’s room and board figure with your tax records so you can substantiate the numbers if the IRS asks.

If a portion of earnings is taxable, report that amount on Schedule 1 (Form 1040), line 8z, as other income.⁵ If the 10% additional tax applies, calculate it on Form 5329, Part II, and carry that amount to your return.⁶

When the 10% Penalty Is Waived

Taxable earnings normally carry an additional 10% federal penalty on top of income tax. The penalty (but not the income tax) is waived when:

The non-qualified amount equals a tax-free scholarship, fellowship, or similar grant the beneficiary received.
The earnings are being taxed because the underlying expense was used to claim the American Opportunity or Lifetime Learning Credit.
The distribution followed the beneficiary’s death or disability.
The beneficiary attends a U.S. military academy, up to the cost of advanced education at that academy.

⁶

You still owe ordinary income tax on the earnings in each case. The exception removes only the 10%.

Rollover to a Roth IRA

Starting in 2024, the SECURE 2.0 Act lets a 529 beneficiary roll leftover funds into a Roth IRA in the beneficiary’s name. A rollover appears on the 1099-Q with Box 4b checked, is not taxable, and is not a non-qualified distribution. The conditions:

The 529 account must have been open at least 15 years.
Contributions made in the last 5 years, and earnings on them, are not eligible.
Each year’s rollover counts against the beneficiary’s IRA contribution limit for that year. For 2026, that’s up to $7,500 under age 50, or $8,600 at 50 or older, reduced by any direct IRA contributions already made that year.
The lifetime cap is $35,000 per beneficiary.
The transfer must be trustee-to-trustee; a check to the account owner doesn’t qualify.

⁷

For overfunded plans or beneficiaries who chose a different path, this is a materially better outcome than a non-qualified withdrawal.

1
Internal Revenue Service. Instructions for Form 1099-Q (04/2025)
2
Office of the Law Revision Counsel. 26 USC 529 – Qualified Tuition Programs
3
Office of the Law Revision Counsel. 26 USC 530 – Coverdell Education Savings Accounts
4
Internal Revenue Service. 529 Plans: Questions and Answers
5
Internal Revenue Service. Schedule 1 (Form 1040) – Additional Income and Adjustments to Income
6
Internal Revenue Service. Instructions for Form 5329
7
Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026; IRA Limit Increases to $7,500