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Massachusetts Capital Gains Tax Calculator (2025)

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

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Total Capital Gains Tax

$10,000

20.00%

Effective CG Rate

Net After Tax

$40,000

Federal CG Tax

$7,500

MA State Tax

$2,500

Summary

Your total capital gains tax is $10,000 (20.00% 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.

Massachusetts taxes capital gains at 5.00% effective rate, adding $2,500 to your total tax.

Net After Tax: $40,000
Fed LTCG

3 rows

Tax ComponentTax AmountEffective Rate
Federal Long-Term CG Tax$7,50015.00%
Massachusetts Capital Gains Tax$2,5005.00%
Total Capital Gains Tax$10,00020.00%

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

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