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Colorado Retirement Income Tax Guide 2026

Daniel · CountryTaxCalc Updated August 2026
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KEY INSIGHT
Colorado taxpayers 65+ can subtract 100% of their federally taxed Social Security, plus up to $24,000 of other pension/annuity/401(k)/IRA income. Those 55-64 get a full Social Security subtraction if AGI is under $75,000 (single)/$95,000 (joint), otherwise a combined $20,000 cap applies. Remaining income is taxed at Colorado's flat 4.4% rate.
At a glance

Key Facts

Social Security subtraction (age 65+)
100% of federally taxed Social Security benefits — no income limit, in effect since tax year 2022
Social Security subtraction (age 55-64)
100% exempt if AGI ≤ $75,000 (single) or ≤ $95,000 (joint); otherwise counts toward the $20,000 general subtraction cap
Pension/annuity/401(k)/IRA subtraction (65+)
Up to $24,000 per taxpayer, separate from the Social Security subtraction
Pension/annuity/401(k)/IRA subtraction (55-64)
Up to $20,000 per taxpayer, combined with Social Security if AGI exceeds the threshold above
Colorado flat income tax rate (2026)
4.4% on all taxable income above the standard deduction — no brackets
Standard deduction (2026, federal conformity)
$16,100 single / $32,200 married filing jointly (IRS-set figure Colorado's taxable income calculation starts from)
2026 pension-cap-removal bill
SB25-136 would have eliminated the $20,000/$24,000 caps entirely, but it was postponed indefinitely by committee in Feb 2025 — the caps remain in force for 2026
Introduction

Colorado is frequently ranked as one of the more retirement-friendly states, but the reason isn't a blanket exemption — it's a set of age-based subtractions that phase in differently depending on how old you are and, for the 55-64 bracket, how much you earn. Retirees 65 and older get the most generous treatment: their full Social Security benefit is subtracted from Colorado taxable income, and a separate $24,000 cap covers pension, annuity, 401(k), and IRA withdrawals. Retirees aged 55-64 face a narrower path — Social Security is only fully exempt below an income threshold, and other retirement income is capped at $20,000 combined.

This guide breaks down exactly how each age bracket works, walks through worked examples, and explains what changed (and, importantly, what a failed 2025 bill did not change) heading into the 2026 tax year. For a state-by-state comparison of how your retirement income would be taxed elsewhere, see our retirement income tax by state calculator.

Section 01

Does Colorado Tax Social Security Benefits in 2026?

It depends on your age and, in one bracket, your income. Taxpayers who are 65 or older at the end of the tax year can subtract 100% of the Social Security benefits included in their federal taxable income — there is no dollar cap and no income limit for this age group. This full exemption has been in effect since tax year 2022, and critically, it does not count against the separate pension/annuity subtraction cap described below; a 65-year-old retiree can claim both the full Social Security subtraction and up to $24,000 of other retirement income subtraction in the same year.

Taxpayers aged 55 to 64 have a narrower benefit. Starting with tax year 2025 (and continuing into 2026) under HB24-1142, this age group can subtract 100% of their Social Security benefits only if their federal adjusted gross income is $75,000 or less (single/head of household) or $95,000 or less (married filing jointly). If your AGI exceeds that threshold, your Social Security benefits are not separately exempt — instead, they're folded into the general $20,000 pension/annuity subtraction cap alongside any other retirement income you receive. Taxpayers under 55 generally do not qualify for either subtraction, even if they're receiving Social Security disability or survivor benefits, though a narrow exception exists for beneficiaries of a deceased public employee's pension.
Section 02

How Does Colorado's Pension and Annuity Subtraction Work by Age?

Colorado's pension and annuity subtraction (found at Colorado Revised Statutes §39-22-104(4)(f)) predates the newer Social Security-specific rules and applies to a broader set of retirement income: employer pensions, government pensions, annuities, IRA distributions, self-employed retirement account distributions, and fully matured privately purchased annuities. The subtraction is age-tiered:

Ages 55-64: up to $20,000 per taxpayer per year. If you're in this age bracket and your income is above the Social Security exemption threshold, your Social Security benefits are also folded into this same $20,000 ceiling — meaning a retiree with $18,000 of Social Security and $15,000 of pension income can only subtract $20,000 total, not $33,000.

Age 65+: up to $24,000 per taxpayer per year, but this cap covers only non-Social-Security retirement income (pensions, annuities, 401(k)/IRA withdrawals) because Social Security is already fully and separately exempt at this age. Married couples where both spouses qualify can each claim their own subtraction — effectively doubling the household cap ($48,000 for a couple both 65+, or $40,000 for a couple both 55-64).
Section 03

Are 401(k) and IRA Withdrawals Taxed in Colorado?

401(k) and traditional IRA withdrawals are treated the same as pension and annuity income under Colorado's subtraction — they qualify for the $20,000 (55-64) or $24,000 (65+) cap described above. If your total qualifying retirement income (pension, annuity, 401(k), IRA distributions — excluding Social Security for the 65+ bracket) is at or below your age bracket's cap, none of it is taxed by Colorado. Amounts above the cap are added back into Colorado taxable income and taxed at the flat 4.4% rate. Roth IRA qualified withdrawals are already federal-tax-free, so they never enter Colorado taxable income in the first place and don't need to be claimed against the subtraction. Required minimum distributions (RMDs) from traditional 401(k)/IRA accounts are treated as ordinary pension/annuity income for subtraction purposes.
Section 04

What Is Colorado's Flat Tax Rate and Standard Deduction for 2026?

Colorado applies a single flat income tax rate of 4.4% to all taxable income — there are no brackets, so a retiree with $30,000 in taxable retirement income pays the same 4.4% rate as someone with $300,000. Colorado's taxable income calculation starts from your federal taxable income, which already reflects the federal standard deduction (for 2026, $16,100 for single filers and $32,200 for married filing jointly, per IRS Revenue Procedure 2025-32) before Colorado-specific subtractions like the Social Security and pension/annuity exemptions are applied. Colorado also has a TABOR (Taxpayer's Bill of Rights) mechanism that can trigger temporary rate reductions or direct refunds in years of strong state revenue growth, though no TABOR-driven rate cut is projected for tax year 2026 based on current state revenue forecasts.
Section 05

Worked Example: Retiree Age 65+ in Colorado

Consider a single retiree, age 68, with $22,000 in Social Security benefits and $30,000 in combined pension and traditional IRA withdrawals (federal AGI $52,000 before subtractions, using round numbers for illustration). Step 1: Subtract the full $22,000 of Social Security — fully exempt at 65+, no income test. Step 2: Apply the $24,000 pension/annuity/IRA cap to the $30,000 of other retirement income — $24,000 is subtracted, leaving $6,000 taxable. Step 3: Apply the $16,100 standard deduction. Result: only $6,000 of this retiree's $52,000 in retirement income is exposed to Colorado's 4.4% flat rate at all (before the standard deduction reduces it further) — for many 65+ retirees living primarily on Social Security and moderate pension income, Colorado state tax liability approaches zero.
Section 06

Worked Example: Retiree Age 55-64 in Colorado

Now consider a single retiree, age 60, who took early Social Security ($16,000/year) plus $25,000 from a 401(k). Scenario A — AGI under $75,000: if total AGI is below the $75,000 single-filer threshold, the full $16,000 of Social Security is subtracted separately, and the $25,000 of 401(k) income is subject to the $20,000 cap — $20,000 is subtracted, leaving $5,000 taxable. Scenario B — AGI over $75,000 (for example, this retiree also has $60,000 of part-time consulting income, pushing AGI above the threshold): Social Security no longer qualifies for the separate full exemption. Instead, the $16,000 of Social Security and $25,000 of 401(k) withdrawals are combined ($41,000) and only $20,000 total can be subtracted, leaving $21,000 of retirement income taxable at 4.4% — a meaningfully worse outcome purely because of the income threshold, illustrating why the 55-64 bracket requires more careful planning around AGI than the 65+ bracket.
Section 07

How Does Colorado Compare to Neighboring States for Retirees?

Colorado's retirement tax treatment is more favorable than most of its neighbors once you're 65+, but less clear-cut for early retirees. Wyoming has no state income tax at all, making it the most tax-efficient neighbor for retirement income of any kind. Utah taxes Social Security and most retirement income at its flat 4.55% rate, though it offers a retirement income tax credit that phases out at higher incomes. Kansas exempts Social Security for AGI under $75,000 but taxes it above that (similar in spirit to Colorado's 55-64 approach, but applied to all ages). Nebraska fully exempts Social Security regardless of age or income as of recent reform. New Mexico exempts Social Security below set income thresholds. For a 65+ Colorado retiree with modest pension income, Colorado's combined Social Security exemption plus $24,000 pension subtraction often produces a lower effective state tax bill than Utah or Kansas, though Wyoming and Nebraska residents with large Social Security incomes may still come out ahead of Colorado on that specific income stream.
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FAQ

Frequently Asked Questions

Is Social Security fully exempt from Colorado income tax in 2026?

Only for taxpayers 65 and older — that group gets a full, uncapped exemption. Taxpayers 55-64 are only fully exempt if AGI is under $75,000 (single) or $95,000 (joint); above that, Social Security counts toward the $20,000 general pension subtraction cap instead.

What is Colorado's pension and annuity subtraction cap for 2026?

$20,000 per taxpayer for ages 55-64, and $24,000 per taxpayer for ages 65+. Each qualifying spouse on a joint return can claim their own cap separately, so a couple both 65+ can subtract up to $48,000 combined.

Did Colorado remove the pension subtraction caps for 2026?

No. SB25-136, which would have eliminated the $20,000/$24,000 caps entirely, was postponed indefinitely by a Senate committee in February 2025 and did not become law. Some third-party sites still describe the caps as removed — that is incorrect for tax year 2026.

Are 401(k) and IRA withdrawals taxed in Colorado?

They qualify for the same age-based subtraction as pensions: up to $20,000 (ages 55-64) or $24,000 (ages 65+, separate from Social Security). Amounts above the cap are taxed at Colorado's flat 4.4% rate. Roth IRA qualified withdrawals aren't taxed at all since they're already federal-tax-free.

What is Colorado's income tax rate for retirees in 2026?

The same flat 4.4% that applies to all Colorado taxpayers — there's no separate retiree rate. The tax benefit for retirees comes entirely from the Social Security and pension/annuity subtractions reducing taxable income before the 4.4% rate is applied.

Can I claim both the Social Security exemption and the pension subtraction in the same year?

Yes, if you're 65+. The Social Security exemption is unlimited and separate from the $24,000 pension/annuity cap at that age. For ages 55-64, they're combined into one $20,000 cap unless your AGI is under the $75,000/$95,000 threshold, in which case Social Security is separately exempt.
Disclaimer:This guide is for educational purposes only and does not constitute tax or financial advice. Colorado's Social Security and pension/annuity subtraction rules involve age and income tests that can change with each legislative session — verify current figures with the Colorado Department of Revenue at tax.colorado.gov before filing, and consult a qualified tax professional for advice specific to your situation.
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