Colorado Tax on Capital Gains

Colorado does not have a separate or special capital gains tax.

Instead, capital gains are treated the same as other types of income and are taxed at the state’s flat individual income tax rate.

Currently, Colorado’s flat income tax rate is about 4.4% (some tax publications still reference 4.55% due to recent rate adjustments and rounding).

Regardless of the exact decimal, the key point is that everyone pays the same rate, no matter how high or low their income is.

This approach is very different from federal tax law, which applies lower tax rates to long-term capital gains.

How Capital Gains Are Taxed in Colorado

1. Capital Gains Are Taxed as Ordinary Income

Profits from selling assets—such as stocks, bonds, mutual funds, businesses, or real estate—are added to your other income, including wages, pensions, and interest.

Colorado starts with your federal Adjusted Gross Income (AGI), so capital gains reported on your federal return automatically flow through to your Colorado return.

2. Flat Tax Rate Applies

Colorado uses a single flat tax rate, meaning:

• Capital gains are taxed at the same rate as wages
• There is no preferential rate for long-term capital gains
• High-income and low-income taxpayers pay the same percentage

Whether you held an asset for six months or ten years, the state tax rate is the same.

3. No Short-Term vs. Long-Term Distinction

Unlike federal taxes, Colorado does not distinguish between:

• Short-term gains (assets held one year or less)
• Long-term gains (assets held more than one year)

Both are taxed identically at the flat state income tax rate.

4. Special Agricultural Property Subtraction

Colorado provides a significant exception for farmers and ranchers.

Taxpayers may qualify for a state income subtraction for capital gains from selling agricultural real property if:

• The property was used for agricultural purposes
• It was held for more than five years
• The taxpayer meets other eligibility requirements under Colorado law

This subtraction can substantially reduce or eliminate the taxable portion of qualifying gains, making it a valuable benefit for agricultural families and farm succession planning.

Example

• Capital gain from selling investments: $10,000
• Total income taxed at Colorado’s flat rate of about 4.4%
• State tax on the gain: approximately $440

There is no reduction based on how long the asset was held, unless the agricultural property subtraction applies.

Key Takeaway

Colorado treats capital gains as ordinary income and taxes them at a uniform flat rate, with:

• No special lower rate for long-term investments
• No distinction between short-term and long-term gains
• A meaningful tax break only for qualifying agricultural property sales

For most investors, capital gains in Colorado are simply another line of income taxed at the same rate as wages.

Recommendation: File Electronically

Because Colorado capital gains flow directly from your federal return and interact with state-specific subtractions, electronic filing is strongly recommended.

E-filing helps by:

• Automatically importing federal capital gains data
• Correctly applying Colorado’s flat tax rate
• Ensuring eligibility for agricultural subtractions when applicable
• Reducing errors and speeding up processing and refunds

Electronic filing is especially helpful for taxpayers reporting investment income, real estate transactions, or agricultural property sales.