Missouri 529 Tax Deduction: Limits, Recapture, and Rollovers

Missouri residents who contribute to a MOST 529 college savings account can deduct up to $8,000 per year from their state taxable income, or up to $16,000 if they are married and filing jointly. That is the core of the Missouri 529 tax deduction, and it applies to contributions made to the Missouri MOST 529 Plan or to another qualified tuition program under Section 529 of the Internal Revenue Code.¹

The deduction sits on top of the federal treatment. Earnings grow tax-deferred and come out free of federal tax when spent on qualified education costs.² Missouri layers a state deduction on the way in.

Who Can Claim the Deduction

You do not have to be the parent of the beneficiary. Any Missouri resident who files a state return and makes a contribution to a MOST 529 account can claim the deduction, whether the account is for a child, grandchild, niece, family friend, or the taxpayer themselves.³ The statute ties the benefit to the person putting the money in, not to any specific relationship with the student.¹

The $8,000 cap is per taxpayer, per year. A married couple filing jointly gets $16,000 combined. Contributions above those amounts are still allowed, but the excess does not reduce your state taxable income.⁴

If you move out of Missouri, you lose eligibility going forward. Deductions you already claimed while a resident stay intact so long as the funds are eventually used for qualified expenses.

What Counts and the Account Cap

There is no minimum to open a MOST 529 account, and you can fund it through one-time deposits, automatic transfers, or payroll deduction.⁵ Every dollar you contribute in a calendar year counts toward the deduction, up to the annual limit.

The plan caps the combined balance across all MOST 529 accounts held for a single beneficiary at $550,000. Once a beneficiary hits that ceiling, no new contributions are accepted, though investment gains can carry the balance higher without penalty.

Spending That Preserves the Benefit

The deduction assumes the money will eventually pay for education. Qualified postsecondary costs include tuition, mandatory fees, books, supplies, computers, internet access, and room and board for students enrolled at least half-time at a school that participates in federal student aid programs.² That covers most accredited colleges, universities, and vocational schools.

Two other categories were added through Missouri House Bill 297, signed in 2021. You can withdraw up to $10,000 over the lifetime of each beneficiary to repay qualified student loans, federal or most private. And the plan covers costs tied to apprenticeship programs registered with the U.S. Department of Labor, including tools, fees, textbooks, and supplies.⁶

K-12 Tuition

Federal law allows 529 money to cover K-12 tuition at private, public, or religious schools, capped at $10,000 per student per year.² Missouri raised its own tax-free K-12 withdrawal ceiling to $20,000 per student per year, effective January 1, 2026.⁷ Money spent on K-12 tuition is not growing for college, so early withdrawals cut into the compounding that makes 529 accounts efficient in the first place.

Non-Qualified Withdrawals: The Missouri Recapture

Pull money out for something other than a qualified expense and three tax hits stack up. The earnings portion of the withdrawal is taxed as ordinary federal income. A 10% additional federal penalty tax applies to those earnings. And Missouri recaptures the state deduction.⁴

Recapture works by adding the non-qualified withdrawal back into your Missouri adjusted gross income for the year the money comes out.¹ If you deducted $8,000 in contributions over several years and later withdrew that money for a non-qualified purpose, Missouri would tax the withdrawal as though the deduction had never happened.

The statute carves out an exception for transfers that qualify as federal 529 rollovers. Changing the beneficiary to an eligible family member, or moving funds inside the plan, generally does not trigger recapture. Eligible family members include siblings, step-siblings, children, grandchildren, in-laws, spouses of those relatives, and first cousins.⁸

Rolling Unused 529 Funds to a Roth IRA

Starting in 2024, the SECURE 2.0 Act let families move unused 529 money into a Roth IRA for the beneficiary. The 529 account must have been open at least 15 years, the Roth must belong to the 529 beneficiary, and the transfer must go directly from custodian to custodian. Contributions made in the last five years and their earnings are not eligible. The lifetime rollover cap is $35,000 per beneficiary, and each year’s rollover cannot exceed the annual IRA contribution limit ($7,500 for 2026 for beneficiaries under 50).⁹¹⁰

Missouri has not said explicitly whether a 529-to-Roth rollover triggers recapture of previously claimed state deductions. Confirm the treatment with a tax advisor before making the move.⁸

Front-Loading Contributions for Larger Gifts

Contributions to a 529 count as completed gifts to the beneficiary for federal gift and estate tax purposes, so the money leaves your taxable estate right away. The 2026 annual gift tax exclusion is $19,000 per recipient.¹¹

Federal law also lets you front-load five years of gifts in a single 529 contribution. An individual can put in up to $95,000 in one year, or $190,000 for a married couple, and treat the gift as spread evenly across five calendar years for gift tax purposes.⁹ For the Missouri deduction, though, only the first $8,000 (or $16,000 jointly) reduces state taxable income in the year of the contribution. Front-loading is a federal estate-planning move, not a way to accelerate the state deduction.

1
Missouri Revisor of Statutes. Missouri Revised Statutes RSMo 166.435
2
Internal Revenue Service. 529 Plans: Questions and Answers
3
Department of Higher Education and Workforce Development. MOST 529 College Savings Plan
4
MOST 529 Plan. Tax Advantages
5
MOST 529 Plan. Contributions
6
Missouri State Treasurer’s Office. Treasurer Fitzpatrick Recognizes End of Missouri General Assembly Session
7
MOST 529 Plan. K-12 Expenses
8
MOST 529 Plan. Frequently Asked Questions
9
Office of the Law Revision Counsel. 26 USC 529 – Qualified Tuition Programs
10
Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026, IRA Limit Increases to $7,500
11
Internal Revenue Service. What’s New – Estate and Gift Tax