Connecticut Tax on Capital Gains

Connecticut taxes capital gains as ordinary income, meaning profits from selling assets such as stocks, real estate, or businesses are added to your other income and taxed under the state’s progressive income tax system.

Connecticut’s income tax rates range from 2.00% to 6.99%, depending on your total taxable income and filing status. Unlike the federal system, Connecticut does not provide a special lower tax rate for long-term capital gains.

However, the state does offer important exemptions and adjustments, most notably for gains from Connecticut state and municipal bonds, which are generally tax-exempt at the state level.

Federal capital gains rules still apply separately, where short-term gains are taxed as ordinary income and long-term gains are taxed at preferential rates of 0%, 15%, or 20%.

How Connecticut Taxes Capital Gains

1. Start With Federal Adjusted Gross Income (AGI)

Connecticut begins its tax calculation with your federal Adjusted Gross Income (AGI). This amount already includes all capital gains reported on your federal return.

2. Apply Connecticut-Specific Adjustments

After starting with federal AGI, Connecticut requires certain additions and subtractions, including:

• Subtracting gains from the sale of Connecticut state or municipal bonds
• Adding back losses from Connecticut bonds that were deducted federally
• Making other limited state-specific income adjustments, depending on your situation

These adjustments ensure that income exempt under Connecticut law—particularly in-state bond income—is not taxed at the state level.

3. Apply Progressive State Tax Rates

Once adjustments are made, the remaining taxable income (including most capital gains) is taxed at Connecticut’s tiered income tax rates, which currently range from:

• 2.00% at lower income levels
• Up to 6.99% for higher-income taxpayers

Capital gains are taxed at the same rate as wages, interest, and other income.

Key Differences Between Connecticut and Federal Capital Gains Tax

• No special long-term rate: Connecticut does not distinguish between short-term and long-term capital gains for tax rate purposes.
• Federal vs. state treatment: While the federal government taxes long-term gains at reduced rates, Connecticut fully taxes them as ordinary income.
• State bond exemption: Gains from Connecticut state and municipal bonds are excluded from Connecticut taxable income, offering a meaningful tax advantage for residents investing in in-state bonds.

Example

Suppose you sell stock for a profit. That gain is included in your federal AGI and flows directly into your Connecticut return.

If your total income places you in the highest state tax bracket, the gain is taxed at 6.99%, the same rate that applies to your salary or self-employment income.

If, instead, the gain came from selling Connecticut municipal bonds, that income would generally be subtracted from your Connecticut return and not taxed by the state.

Bottom Line

• Connecticut taxes capital gains as ordinary income.
• There is no reduced tax rate for long-term gains at the state level.
• Gains from Connecticut state and municipal bonds are exempt from state income tax.
• Federal capital gains taxes still apply separately.

File Electronically for Best Results

Because Connecticut’s tax return closely follows federal AGI and relies on precise additions and subtractions, electronic filing is highly recommended.

E-filing helps:

• Automatically transfer federal capital gain data to your state return
• Apply Connecticut-specific bond exclusions correctly
• Reduce math and reporting errors
• Speed up refunds and confirmation of acceptance

Using tax software or a professional e-file provider ensures your capital gains are reported accurately and that you receive every state tax benefit Connecticut law allows.