Yes — with exemptions for many retirees.
Colorado taxes Social Security benefits, but taxpayers age 65 and older may deduct all federally taxed benefits, and a 2025 expansion extends a full deduction to many residents 55–64 under an income cap. Most retirees owe little or no state tax on benefits.
Note: this covers state tax only. The federal government may tax up to 85% of your benefits depending on your combined income, regardless of where you live.
See how your claiming age affects your benefit.
Reviewed 2026-06-17. Verify with the Colorado Department of Revenue.
Updated July 2026