Lottery Winnings Taxation in Colorado: Yes, Fully Taxable

Yes, lottery winnings are taxable income in Colorado.

Federal Tax

• Ordinary income rates (10–37% based on bracket)
• 24% mandatory withholding on winnings >$5,000
• Additional tax due/return based on total income

Colorado State Tax

• Flat 4.4% income tax rate (2024)
• 5% withholding on winnings >$5,000
• Credit for taxes paid to other states if applicable

Practical Impact

Combined effective rate often 25–35%+. Large jackpots push into top brackets. Consult CPA for planning (annuity vs. lump sum, charitable giving, trusts).