Colorado 529 tax deduction calculator.

How this is calculated

CollegeInvest states that contributions to any CollegeInvest savings account are eligible for a deduction from your Colorado state income tax return. For tax year 2025 the deductions are $25,400 per taxpayer per beneficiary for single filers or $38,100 per filing per beneficiary for joint filers, and for 2026 they increase to $26,200 and $39,200. The footnote on the same page says the amount is subtracted from Colorado income in the calendar year of the contribution, up to your Colorado taxable income that year, and is subject to recapture in later years in which nonqualified withdrawals are made.

The calculator below the answer takes your total contribution, applies the cap, and multiplies the deductible amount by the tax rate you enter. We do not guess your rate because it depends on your income and, in some places, local tax; look it up on your state return. Result: deductible amount, tax saved and any amount that is over the cap.

Worked example

$10,000 for one child, single filer. Under the $26,200 cap, so all $10,000 is deductible.

$50,000 for one child, joint filers. The $39,200 joint cap applies, so $39,200 is deductible and $10,800 is not.

$30,000 split across two children, single filer. $15,000 each, both under the cap, so the full $30,000 is deductible.

Limits of this estimate

The Colorado Department of Revenue page on this subtraction returned an access-denied error when we tried to read it, so these figures come from the plan administrator, not the tax agency. Check the Colorado return instructions for the year you file. The tax saved is only the state income tax effect of the deduction at the rate you type in. It does not include federal effects (there is no federal deduction for 529 contributions) or the value of tax-free growth. Contributions are checked against the rules as of November 1, 2026.

Who should check first

If you move states, claim contributions someone else made, or use a plan from another state, the deduction may not apply the way this page describes. Several states tie the deduction to its own plan only; where the source does not say, we do not assume. If you are comparing states, the state 529 hub lists the five states we have verified side by side.

Sources

Primary sources opened and checked on November 1, 2026. Figures are for tax year 2026 unless a source says otherwise.

• CollegeInvest FAQs: benefits (deduction amounts for 2025 and 2026)
• CollegeInvest: benefits of a 529 savings plan