The Roth IRA in Colorado

Starting point

Federal taxable income, followed by Colorado additions and subtractions.

Income-tax rate

4.4% statutory rate. Temporary reductions are possible; do not treat a planning estimate as a final return calculation.

Qualified Roth withdrawals

Excluded from federal income, so they do not enter Colorado’s starting tax base.

Retirement-income subtraction

Ordinarily up to $20,000 at ages 55–64 or $24,000 at 65+, per person. Social Security and other qualifying retirement income share the allowance.

Two points to investigate

A conversion can reduce an income-tested subtraction. A federally permitted 529-to-Roth rollover can also trigger Colorado deduction recapture.

Creditor protection

Colorado expressly protects owner Traditional and Roth IRAs under its retirement exemption, with important exceptions.

A conversion is not a new annual contribution. And the amount transferred is not necessarily the amount taxed: properly recorded federal nondeductible contributions can represent money already taxed.

For 2026, the combined annual Traditional-plus-Roth IRA contribution limit is $7,500, or $8,600 if you are 50 or older. Eligible compensation and other rules can make your actual limit lower. A Roth withdrawal is generally qualified only after the Roth IRA’s five-tax-year period and an applicable qualifying event, such as reaching age 59½. Regular contributions come out first under the federal ordering rules; that does not make every withdrawal qualified.

A subtraction removes qualifying income from the Colorado tax calculation. It is not a credit that pays the same number of dollars toward your tax bill.

Colorado’s ordinary retirement-income allowance is up to $20,000 for someone who is 55–64 at year-end, or $24,000 for someone 65 or older. It cannot exceed qualifying income included federally. Each spouse has a separate allowance; you cannot transfer an unused portion to the other spouse.

Use the Social Security amount included in federal income, not the total benefits deposited into your bank account.

Can an IRA conversion use what is left? A properly completed taxable Traditional-IRA-to-Roth conversion appears eligible once the owner meets Colorado’s year-end age test. That is an interpretation of the IRA-distribution and early-distribution rules—not an express Colorado ruling about conversions. Confirm the treatment for your transaction before relying on the subtraction, especially at ages 55–59½. Do not assume a workplace-plan or in-plan conversion follows the same path.

Since 2025, someone aged 55–64 can subtract all federally taxable Social Security when current-year adjusted gross income (AGI) is no more than $75,000 filing individually or $95,000 jointly. AGI is an income measure from the federal return; it is not Colorado taxable income after state subtractions.

Above that gate, the ordinary $20,000 shared allowance applies. If taxable Social Security is greater than $20,000, the extra subtraction disappears at once. That is an income cliff, not a gradual phaseout. The age-65-and-older Social Security rule does not have this income gate.

Meet a hypothetical single Colorado resident, age 60 at year-end, who is entitled to Social Security benefits. In 2026, they have $30,000 of benefits and $49,500 of other ordinary income that is not a pension. Their federally taxable Social Security is $25,500, making AGI exactly $75,000. Now they complete a fully taxable $1,000 IRA conversion.

Assumptions: full-year Colorado residence; not blind or claimable as a dependent; unchanged $16,100 standard deduction; benefits equal net SSA-1099 box 5, with no repayments or prior-year lump-sum election; no tax-exempt interest, other pension, income adjustments, special deductions, credits, alternative minimum tax, withholding or benefit changes. The federal Social Security worksheet still produces $25,500 after the conversion. Age 60 by itself does not establish Social Security eligibility.

The conversion adds $1,000 of income and removes $5,500 of subtraction. Together, those changes add $6,500 to the Colorado tax base. At 4.4%, that is $286 of added state tax—$44 on the conversion and $242 from the lost subtraction.

This is not a 28.6% Colorado tax bracket. It is one example of an income gate changing the tax base. Social Security already fills the post-conversion allowance here, so the result does not depend on whether the conversion itself qualifies for that allowance.

For 2026, the high-income rule applies when federal AGI reaches $300,000. It generally adds back the part of the federal standard or itemized deduction above $1,000 on a single return or $2,000 jointly. An add-back puts an amount previously deducted back into the state tax base.

Do not reuse the larger deduction amounts from the 2023–2025 rule. And if you itemize, the overlapping Colorado adjustments need coordination; simply adding them all together can double-count.

Here is a separate 2026 example: a single, full-year Colorado resident, age 50, with $299,000 of wages and a $16,100 standard deduction. A fully taxable $2,000 IRA conversion raises AGI to $301,000. Assume the person is not blind or claimable as a dependent, with no withholding, other income, special deductions, Colorado adjustments, credits or alternative minimum tax. This person is below the ordinary pension-subtraction age.

The added state tax is $752.40 under these assumptions, not just $88. The difference comes from the $15,100 deduction add-back. Business owners may also face a separate Colorado add-back for the federal qualified business income deduction. A conversion is not itself business income, but its effect on AGI can matter.

Colorado SecureSavings is a payroll-deduction IRA program, not an employer 401(k). Automatic enrollment defaults to a Roth IRA, and employees may opt out or elect a Traditional IRA. The default contribution is 5% of wages, with annual increases of one percentage point up to 8%, unless you change the election. Employers do not contribute or match.

If you already save in an IRA elsewhere, count both accounts together for the annual IRA contribution limit. Automatic enrollment does not establish that you meet the federal income or compensation rules.

A useful distinction: taxable conversion income is subtracted when calculating modified AGI for direct Roth IRA contribution eligibility. That is a different income test from Colorado’s Social Security subtraction. Do not use one income number for both questions; other effects on your income can still matter.

Public employees should check their employer’s actual PERAPlus offerings. Roth options in a workplace 401(k) or 457 plan are not personal Roth IRAs. Colorado enacted a PERAPlus expansion with implementation beginning January 1, 2027; that does not mean every option is already available through every employer in 2026.

Colorado’s CollegeInvest contribution deduction has its own rules. For 2026, the deduction ceilings are $26,200 for a single filer and $39,200 for joint filers, per beneficiary. These are state deduction limits—not federal Roth IRA contribution limits, and not a promise that every transfer into a 529 is deductible.

Federal permission and state tax treatment are two separate checks. Keep the account’s contribution history and the Colorado returns on which deductions were claimed.

Changing your mailing address is not the whole residency test. Domicile means the home you intend to return to; an existing domicile continues until a new one is established. Colorado can also treat someone as a resident under its permanent-abode and more-than-six-month presence test even when their domicile is elsewhere.

1. Establish the actual residence change. Keep the facts and records that support it; do not start with a hoped-for conversion tax result.
2. Locate the transaction in the correct period. A conversion wholly completed while you are a Colorado resident presents a different sourcing question from one wholly completed after you are neither a resident nor a domiciliary. Federal law protects covered retirement income from taxation by a former state.
3. Prepare the part-year calculation. Colorado uses a tentative full-year tax multiplied by an income-allocation ratio—not a fraction based simply on the number of months you lived there.

A transaction that straddles the move needs a specific timing review. This timeline is not a rule that the date you clicked “convert” settles the tax result.

Bring your IRA records with you: federal basis, past contributions, conversions and withdrawals. A move does not reset those histories. Colorado’s part-year allocation of an IRA contribution deduction also uses a different method from the allocation of retirement income.

The senior property-tax exemption is principally an age, ownership and occupancy benefit—not the AGI cliff in the Social Security example. Other property relief has different requirements, including a separate temporary senior primary-residence classification.

Do not confuse those programs with the Property Tax/Rent/Heat rebate, usually called PTC, or the Disability Assistance Credit. Disability-only PTC eligibility ended with tax year 2024; the replacement credit has its own qualifying rules.

“Not taxable” does not automatically mean “ignored by every benefit program.” Before a conversion or withdrawal, identify the program, application year and income or asset definition. A current tax return, a property-rebate application and long-term-care Medicaid eligibility can ask different questions.

For Colorado long-term-care Medicaid, the applicant’s self-funded retirement account is a countable resource under the current rule even when it pays monthly income. Taking payouts does not, by itself, exempt the balance. A community spouse’s retirement accounts also enter the resource assessment, with separate spousal-allowance rules.

This guide does not calculate PTC, disability-credit or long-term-care Medicaid eligibility. Medicaid estate recovery is a separate issue from both eligibility and income tax. Have the agency or a qualified adviser check the account and household facts; do not infer a loss of coverage from a generic Roth rule.

Colorado’s retirement exemption expressly includes owner Traditional and Roth IRAs without stating a dollar ceiling in that paragraph. That does not protect against every claim: child-support collection and federal tax collection are important exceptions.

Money already paid out does not keep the retirement exemption simply because it came from an IRA. Bankruptcy rules are another layer, including special treatment for specified employer-plan rollover money. Keep rollover records, and get legal advice before moving funds because of a creditor concern.

A valid IRA beneficiary designation can transfer the account outside ordinary probate administration, but it does not settle every spouse, divorce or creditor issue. Review beneficiaries after a marriage, divorce or move. Do not assume an inherited IRA has the same protection from the beneficiary’s creditors as the original owner’s IRA.

Colorado currently imposes no estate or inheritance tax for a 2026 death. Federal estate-tax and inherited-account rules are separate; “Roth” is not a blanket exemption from every tax or beneficiary requirement.

Colorado’s estimated-tax framework generally uses the lesser of 70% of current-year tax or 100% of prior-year tax, with 110% substituted for certain higher-prior-year-income taxpayers. The prior-year route has its own conditions. Do not copy the federal percentage into the state calculation.

A late-year conversion can raise timing questions even when you intend to pay the full bill at filing. Annualized installments may help in qualifying cases, but a late estimated payment does not automatically fix earlier missed installments.

Check the custodian’s state-withholding choices before submitting the conversion. Money withheld for taxes is not money deposited into the Roth. Unless you replace the shortfall through a valid rollover, that portion can have a different tax and early-distribution result. The mandatory federal withholding rule for an indirect workplace-plan rollover is not a blanket Colorado rule for IRA conversions.

The rules and sources were checked September 9, 2026. The examples are for tax year 2026 and use the statutory 4.4% planning rate. Recheck the final tax-year rate, return forms and instructions before filing; a prior-year form or a future-effective law is not a current-year answer by itself.

The examples isolate Colorado regular income tax. They do not calculate federal income tax, Medicare premium surcharges, health-insurance credits, alternative minimum tax or every state benefit. The two households are separate illustrations, not steps in one plan.

Before applying either example, check the tax year, filing status, age at year-end, account type, actual taxable income, other retirement income and residency. Joint returns, mixed-age spouses, inherited accounts, itemized deductions and moving years need their own analysis.

The workbook lets you explore the two single-filer illustrations with visible assumptions and formulas. It is a teaching tool, not tax-return software. The CSV and the expandable reference below contain the same dated collection of source-linked explanations.