Social Security
SS partially taxed
Federal rules still apply
SS partially taxed · partial retirement exclusions · property 0.5% · sales 7.89%. Plan RMDs, Roth conversions, and estate tax before retiring in Colorado.
By Sammy S. · Founder · AuthorUpdated for 2026
Still taxes some Social Security for younger/higher-AGI filers; age 65+ typically deducts SS fully. Other retirement income partially sheltered. Rank #38 on this site's retiree-friendliness score (#1 is most favorable).
Social Security
SS partially taxed
Federal rules still apply
Retirement income
Partial retirement exclusions
Pensions / IRA / 401(k)
Estate / inheritance
No state estate/inheritance tax
Federal exempt ~$15M
Retiree rank
#38
Lower score = more friendly
Compare any two states
Social Security, pensions/IRA, estate taxes, and supporting property/sales rates.
SS partially taxed
Age 65+: Social Security fully deductible from Colorado taxable income (AARP / Colorado DOR). Ages 55–64: full SS deduction if AGI ≤ about $75,000 single / $95,000 joint; above that, up to $20,000 of retirement income (including SS) may be deducted. Confirm Form 104.
Federally, up to 85% of Social Security can be taxable based on combined income. State treatment is a separate layer on top of IRS rules.
Partial retirement exclusions
Age-based retirement exclusions apply; Social Security treatment depends on age/AGI as above—confirm current Colorado Form 104 instructions.
Federal income tax on Social Security and retirement distributions can apply regardless of state rules.
No state estate/inheritance tax
Colorado does not currently levy a state inheritance tax.
Federal estate tax may still apply above about $15M for 2026, regardless of state rules.
Income-tax savings can be offset by higher housing or consumption taxes. These are statewide benchmarks—not the exact levy on a specific home or shopping basket.
0.5%
Owner-occupied housing benchmark
Colorado property tax profile →7.89%
State + average local combined rate
Colorado sales tax profile →Living in Colorado does not remove federal tax on taxable Social Security, traditional IRA/401(k) withdrawals, capital gains, or a taxable estate above the federal exemption. Colorado rules sit on top of IRS rules.
Up to 85% of benefits may be taxable based on combined income—same framework in every state.
SS partially taxed
Partial retirement exclusions
No state estate/inheritance tax
Age 65+: Social Security fully deductible from Colorado taxable income (AARP / Colorado DOR). Ages 55–64: full SS deduction if AGI ≤ about $75,000 single / $95,000 joint; above that, up to $20,000 of retirement income (including SS) may be deducted. Confirm Form 104.
Age-based retirement exclusions apply; Social Security treatment depends on age/AGI as above—confirm current Colorado Form 104 instructions.
Statewide effective property tax is about 0.5%. Check local homestead or senior relief.
Combined average sales tax is about 7.89%. Necessities may be taxed differently.
Colorado currently has no state estate or inheritance tax; federal estate tax may still apply.
Conversions can raise Colorado taxable income and, where relevant, Social Security state-tax thresholds.
#38 on this site’s Social Security, retirement-income, and estate/inheritance score (#1 is most favorable).
A planning label—not a guarantee for every AGI level or filing status.
Statewide benchmarks for cash-flow planning; your locality may differ.
Every local income tax, circuit breaker, homestead credit, or private pension nuance.
Rank #39 · SS exempt from state tax · Retirement income taxed
Compare Colorado vs Nebraska →Rank #23 · SS exempt from state tax · Retirement income taxed
Compare Colorado vs Arizona →Rank #23 · SS exempt from state tax · Retirement income taxed
Compare Colorado vs Arkansas →Rank #23 · SS exempt from state tax · Retirement income taxed
Compare Colorado vs California →Confirm current Colorado return instructions and local rules. Rankings are educational planning aids.