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Connecticut Capital Gains Tax Calculator (2025)

Calculate federal and Connecticut capital gains tax on investments. See short-term, long-term, and NIIT rates.

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Total Capital Gains Tax

$10,625

21.25%

Effective CG Rate

Net After Tax

$39,375

Federal CG Tax

$7,500

CT State Tax

$3,125

Summary

Your total capital gains tax is $10,625 (21.25% effective rate) on $50,000 in gains.

Long-term gains: $50,000 at 15% — 15.00% blended federal rate.

No NIIT applies — your income is below the $200,000 MAGI threshold for your filing status.

Connecticut taxes capital gains at 6.25% effective rate, adding $3,125 to your total tax.

Net After Tax: $39,375
Fed LTCG

3 rows

Tax ComponentTax AmountEffective Rate
Federal Long-Term CG Tax$7,50015.00%
Connecticut Capital Gains Tax$3,1256.25%
Total Capital Gains Tax$10,62521.25%

Estimated federal and Connecticut capital gains tax. Excludes wash sale rules, 1031 exchanges, qualified opportunity zones, and state-specific exclusions. Not tax advice.

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