Are 529 Contributions Tax Deductible in Colorado?

Yes. Colorado allows a state income tax subtraction for contributions to a CollegeInvest 529 plan, so 529 contributions are tax deductible in Colorado on your state return, though not on your federal return. For the 2026 tax year, single filers can subtract up to $26,200 per beneficiary and joint filers up to $39,200 per beneficiary.¹

How the Subtraction Works

Colorado Revised Statutes Section 39-22-104 lets you subtract qualifying 529 contributions from your federal taxable income when you calculate what you owe Colorado.² The reduction is dollar-for-dollar up to the annual cap. Colorado’s income tax is a flat 4.4%, so a single filer who contributes the full $26,200 in 2026 saves about $1,153 on state tax. A joint filer contributing $39,200 saves roughly $1,725.

Federal law is different. 529 contributions are never deductible on your federal return, though the money still grows tax-free federally and qualified withdrawals come out tax-free.

Which Plans Qualify

Only contributions to a plan administered by CollegeInvest count. CollegeInvest is a division of the Colorado Department of Higher Education and runs four 529 plans: Direct Portfolio, Scholars Choice, Smart Choice, and Stable Value Plus.³

Contributions to a 529 plan run by any other state do not qualify for Colorado’s subtraction, even if the beneficiary lives in Colorado.⁴ If you already own an out-of-state 529, a rollover into a CollegeInvest account does qualify, subject to the same annual limits.

Who Can Claim It

You do not have to be the account owner. Any Colorado taxpayer who contributes to a CollegeInvest account can take the deduction on their own return.¹ A grandparent, aunt, uncle, or family friend who deposits money directly into a child’s account claims the subtraction on their own Colorado return, provided they file Colorado state income taxes. That makes CollegeInvest a workable vehicle when several relatives want to help pay for a child’s education and each want a tax benefit for what they put in.

Annual Limits by Year

Colorado adjusts the cap each year based on the change in average tuition and room-and-board costs at Colorado’s public colleges and universities.⁴ Recent per-beneficiary limits:

2024: $22,700 single / $34,000 joint
2025: $25,400 single / $38,100 joint
2026: $26,200 single / $39,200 joint

The cap is per beneficiary. If you contribute to accounts for three children, you can subtract up to the full limit for each one.¹

Carryforward for Larger Contributions

If you contribute more than the annual limit in a single year, Colorado lets you carry the excess forward and deduct it in future tax years.⁴ A lump-sum deposit still gets you the full state benefit; the deduction just spreads across several returns until the whole amount is used.

The Contribution Deadline

Contributions must be made by December 31 of the tax year to count for that year. Colorado does not follow the federal-style April cutoff that some other states use for their 529 deductions.⁵ Some banks and brokerages need a few business days to process a deposit, so late-December contributions carry real risk of landing in the next tax year.

How to Claim It on Your Return

Report the subtraction on Colorado Form DR 0104AD (Subtractions from Income Schedule), which you attach to Form DR 0104, the Colorado Individual Income Tax Return. On line 10 of the DR 0104AD, enter the account owner’s name, Social Security number or ITIN, and the total contributed during the tax year.⁶ List each beneficiary separately if you contributed to more than one account.

You’ll need your CollegeInvest account number and the plan’s year-end contribution statement. File electronically through the Colorado Department of Revenue’s Revenue Online portal or by mailing paper forms.⁷ Keep records of contributions and distributions for at least four years after filing.

If you took a distribution during the year, you’ll also receive IRS Form 1099-Q, which reports the gross distribution, the earnings portion, and your original contribution basis. That information determines whether any part of the distribution is taxable.⁸

What Can Reverse the Deduction

Colorado can claw back the subtraction if the money leaves the plan for the wrong reason. If you previously deducted a contribution and later take a non-qualified withdrawal, you must add the withdrawn amount back to your Colorado taxable income for that year. The same addback rule applies if you roll funds from a CollegeInvest account to an out-of-state 529. Even when the transfer is not taxable federally, Colorado treats it as an event that reverses the state deduction you already received.⁴

A non-qualified withdrawal also carries federal consequences: the earnings portion is subject to federal income tax plus a 10% additional federal penalty. Your original contributions are not taxed or penalized, since they went in with after-tax dollars. The 10% penalty is waived if the beneficiary receives a tax-free scholarship (up to the scholarship amount), becomes permanently disabled, or dies.⁹ Those federal waivers do not, on their own, protect you from the Colorado addback if you already claimed the state subtraction on the underlying contribution.

1
CollegeInvest. Colorado 529 Plan Tax Deduction Benefits for College Savings
2
Justia Law. Colorado Revised Statutes Section 39-22-104 – Income Tax Imposed on Individuals, Estates, and Trusts
3
CollegeInvest. CollegeInvest – Colorado 529 College Savings Plans and Accounts
4
Department of Revenue – Taxation. Income Tax Topics: CollegeInvest Contribution Subtraction
5
CollegeInvest. Understanding the Colorado 529 Tax Deduction
6
Colorado Department of Revenue. DR 0104AD – Subtractions from Income Schedule
7
Department of Revenue – Taxation. DR 0104AD – Subtractions from Income Schedule
8
Internal Revenue Service. Instructions for Form 1099-Q – Payments From Qualified Education Programs
9
Internal Revenue Service. Publication 970 (2025), Tax Benefits for Education