Colorado Retirement Income Tax 2026: 4.4% Flat Rate, $24,000 Pension Deduction Per Person

The headline 4.4% flat rate is misleading. Colorado uses federal taxable income as its starting point — meaning the full federal deduction stack (standard deduction, age-65 add-on, and the new OBBBA $6,000 senior deduction) is already applied before Colorado touches your income. Then Colorado adds its own subtractions: full Social Security exemption for taxpayers 65 and older, and up to $24,000 per person in IRA, pension, and annuity income. A married couple both 65+ with $100,000 in RMDs and $40,000 in Social Security often pays roughly $200 in Colorado income tax for the year. Colorado also has the lowest average effective property tax rate (~0.50%) of any major retirement state — lower than Arizona (0.60%), Florida (0.85%), and far below Texas (1.36%).

Colorado vs. California and New York: how the deductions change the picture

The comparison below assumes a married filing jointly couple, both age 65+, with income entirely from IRA distributions or RMDs — no Social Security — so the pension deduction advantage is isolated cleanly. Colorado estimates reflect federal taxable income as the starting point (standard deduction + age-65 add-ons + OBBBA senior deduction already applied) and then the $24,000-per-person ($48,000 combined) Colorado pension subtraction.

Colorado estimates: RMD income, standard deduction ($32,200 MFJ) + age-65 add-on (2 × $1,650) + OBBBA senior deduction (2 × $6,000, phases out above $150K MFJ) already reflected in federal taxable income starting point; then Colorado $48,000 pension subtraction (2 × $24K). No Social Security in this table. New York: after $40,000/MFJ IRA exclusion ($20K/person) and $16,050 standard deduction; Chapter 59 2026 rates. California: FTB 2026 rates, $10,404 MFJ standard deduction, no retirement exemption. Federal income tax is identical for all three states at the same income level.

Colorado retirement income tax calculator 2026

Enter your retirement income to see your estimated Colorado state tax and how it compares to California or New York. The calculator applies Colorado's starting-point rule (federal taxable income), the per-person $24,000 pension subtraction, and the full Social Security exemption for taxpayers 65+.

How Colorado calculates retirement income tax: the starting-point advantage

Colorado's most important retirement tax feature isn't the rate — it's where the calculation begins. Unlike Arizona, which starts from federal adjusted gross income (AGI), Colorado starts from federal taxable income. That means the federal standard deduction ($32,200 MFJ in 2026), the age-65 additional deduction ($1,650 per qualifying spouse), and the new OBBBA $6,000 per-person senior deduction are already embedded in your Colorado starting point before Colorado applies any of its own subtractions.¹

1. Federal taxable income is your Colorado starting point. Colorado starts here — you do not apply a separate Colorado standard deduction. The federal standard deduction, age-65 add-on, and OBBBA senior deduction are all already reflected.
2. Subtract Colorado Social Security income. Taxpayers age 65 and older subtract the full amount of Social Security included in federal taxable income. For most higher-income retirees, up to 85% of SS is included federally — Colorado eliminates all of that at the state level.²
3. Subtract Colorado pension/IRA income. Each eligible person may subtract the smaller of $24,000 (age 65+) or $20,000 (ages 55–64), or the actual pension/IRA income in federal taxable income — whichever is less. On a joint return, each spouse claims their own subtraction: a couple both 65+ can subtract up to $48,000 combined. This applies to IRA distributions, 401(k) distributions, RMDs, traditional pension payments, and annuity income.¹
4. Multiply by 4.4%. Colorado state income tax = remaining taxable income × 4.4%. That's the complete state income tax calculation.

Worked example 1: couple both 68, $100,000 RMD, $40,000 Social Security

The same couple in California (no retirement exemption, $10,404 MFJ standard deduction) would owe approximately $8,400 in California state income tax on the RMD income alone. Colorado's total tax on the same household: $198. The $8,200 annual difference compounds to roughly $164,000 over 20 years, not counting inflation or investment returns on the tax savings.

Worked example 2: couple both 75, $200,000 RMD, $36,000 Social Security

At this income level, California would owe approximately $14,000 in state income tax — $9,200 more per year than Colorado, or $184,000 over 20 years. New York (after the $40,000 MFJ exclusion) would owe approximately $8,700 — still $3,900 more per year than Colorado.

The $24,000 pension deduction: what qualifies and who gets it

Colorado's pension subtraction is remarkably broad. It covers:

• Traditional IRA distributions — including all forms of RMDs
• 401(k), 403(b), 457(b) distributions — all qualified plan distributions
• Traditional pension and annuity payments — whether public or private sector
• Self-employed retirement plan distributions — SEP-IRA, SIMPLE IRA, Solo 401(k)

Per-person rule: The $24,000 limit is per person on the return, not per household. Each MFJ spouse independently qualifies for the deduction based on their own retirement income. Colorado's DR 0104AD worksheet has separate lines for each spouse. A couple with separate IRAs, each spouse drawing $30,000 annually, can claim $24,000 + $24,000 = $48,000 combined — even though each individual IRA is below the combined cap. The deduction is limited to the actual pension/IRA income included in that spouse's share of federal taxable income — you cannot shift income between spouses to maximize the deduction.¹

Age 55–64 deduction: Taxpayers ages 55 to 64 qualify for a $20,000 pension subtraction under the same rules. This is particularly valuable during the pre-RMD Roth conversion window (ages 62–72), when traditional IRA conversions may be partially offset by this deduction.

PERA and DPS exception: Most Colorado PERA (Public Employees' Retirement Association) retirees do not qualify for the standard pension subtraction because PERA's funding structure is different. The subtraction is available only to PERA/DPS members who made contributions between 1984 and 1986 — a small subset. PERA retirees should consult their tax preparer separately.

Why QCDs are still valuable in Colorado — and how to sequence them

Colorado's deduction stack already shelters a large portion of IRA income from state tax. But qualified charitable distributions (QCDs) add a layer of benefit that the pension deduction cannot replicate: they reduce federal AGI, which in turn reduces federally taxable SS income and helps manage IRMAA Medicare surcharges two years forward.

Consider a Colorado resident with $150,000 in annual RMDs and $40,000 in SS. The $48,000 Colorado pension deduction handles the state side efficiently. But $34,000 of SS income is still federally taxable, and $150,000 in income pushes well into IRMAA Tier 2 ($194,000 MFJ threshold). A $15,000 QCD directly from the IRA:

• Removes $15,000 from federal AGI (not just taxable income), which reduces federally taxable SS by roughly $12,750 (85% rule)
• Saves approximately $3,100–$3,300 in federal income tax (22–24% marginal rate)
• Saves $198 in Colorado income tax (4.4% × $4,500 average reduced base)
• May avoid an IRMAA tier jump if the AGI reduction crosses a threshold — saving $624–$1,500/year in Medicare Part B premiums (see IRMAA calculator)

The QCD strategy works the same way in Colorado as in every other state — federal tax savings dominate. Use the QCD calculator to model your specific federal + Colorado combined savings. The $111,000 annual QCD limit for 2026 means most retirees can satisfy their entire RMD through QCDs if their charitable giving is sufficient.⁵

Colorado property tax: lower than Florida, Arizona, and Texas combined-total comparison

Colorado's average effective property tax rate of approximately 0.50% is the lowest of any major retirement destination — below Florida's 0.85%, Arizona's 0.60%, California's 0.75%, and well below Texas's 1.36%.⁴

Property tax rates: Tax Foundation 2024 effective rates. Income tax estimates for MFJ couple both 65+, $150K RMD, no Social Security, as shown in comparison table above. Home value $500K assumed. Florida Homestead Exemption reduces effective rate modestly for permanent residents. Texas school tax freeze for 65+ limits future increases but does not eliminate the base. Colorado senior homestead exemption (described below) is not applied in this table since it requires 10+ years of residency.

For retirees with large RMD income ($200K+), Florida still leads because its zero income tax advantage grows proportionally while property taxes are fixed. But Colorado competes strongly with Florida at moderate RMD levels ($80K–$150K): the income tax is low enough from the deduction stack, and Colorado's property tax advantage over Florida is $1,750/year on a $500,000 home. At $100K RMDs, the total-tax Colorado vs. Florida gap is smaller than most people expect.

Colorado's senior homestead property tax exemption

Colorado homeowners age 65 and older who have owned and continuously occupied their home as a primary residence for at least 10 consecutive years qualify for the senior homestead exemption: 50% of the first $200,000 of actual value is exempt from property tax. This is equivalent to reducing the taxable value of the home by up to $100,000.⁴

On a $400,000 home with a $2,000/year property tax bill, the exemption saves approximately $500–$700/year depending on the county mill levy. Apply through your county assessor's office. The exemption is funded by the state of Colorado, not the local taxing district, so it reduces your bill without shifting the burden to your neighbors.

Note the 10-year residency requirement — this exemption is not available to new Colorado residents, but the baseline property tax rate is already competitive before the exemption applies.

Who benefits most from Colorado retirement taxes

• Military retirees near Fort Carson, Peterson AFB, or NORAD. Full military retirement exemption + the lowest property taxes in major retirement markets makes Colorado Springs one of the best military retirement destinations in the country. See additional tax reduction strategies.
• Moderate-RMD retirees ($60K–$150K/year). The combined federal deduction stack + $48K Colorado pension deduction + full SS exemption means many couples in this income range owe $0–$3,000 in Colorado income tax — competitive with Florida once property taxes are included.
• Retirees leaving California. Colorado offers a 6.5–8.9 percentage point reduction on the marginal rate for IRA/RMD income (California tops out at 9.3–13.3%; Colorado is 4.4% before deductions). For a $200K RMD, the annual savings typically run $7,000–$10,000.
• Retirees with significant Roth IRA assets. Roth distributions are excluded from federal AGI and therefore from Colorado's starting point — effectively zero tax in both systems. Colorado's starting-point structure means a Roth-heavy retiree avoids both federal and state tax on distributions.
• Ages 55–64 doing Roth conversions. The $20,000-per-person pension deduction partially offsets Roth conversion income at the state level during the pre-RMD conversion window, improving the conversion math vs. states with no retirement exemption.

Colorado relocation: the domicile change checklist

Colorado does not have California's aggressive residency audit problem, but establishing clean Colorado domicile still matters if you are moving from a state that claims residency broadly (California, New York).

• Register your vehicle in Colorado within 90 days of establishing residency. Obtain a Colorado driver's license.
• Register to vote at your Colorado address. Cancel the prior-state registration.
• Update all financial accounts (brokerage, IRA, bank) to the Colorado address. Notify your prior-state employer if you receive pension income.
• Spend the majority of calendar days in Colorado. California's 546-day rule applies only to employment-related absences; for retirees, a simple day-count log is sufficient. New York's 183-day statutory residency rule requires spending fewer than 183 days in New York if you maintain a permanent place of abode there.
• File a part-year return in your prior state for the year of the move, reporting income through the move date. File a Colorado full-year or part-year return for Colorado-source income from the move date forward.
• Roth conversion timing: Convert traditional IRA assets after arriving in Colorado. At 4.4% vs. California's 9.3–13.3%, the state tax cost of the conversion is dramatically lower. See the Roth conversion calculator and retirement tax relocation guide for the sequencing math.