How much Massachusetts tax will I owe on capital gains in 2025?

Estimate Massachusetts tax on capital gains for 2025 or 2026 by entering sale proceeds, cost basis, and holding period. The tool calculates gains and applies Massachusetts income tax treatment to show the estimated state tax impact.

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How this calculation works

  • Computes capital gain or loss from proceeds and basis.
  • Classifies holding period for reference.
  • Applies Massachusetts income tax treatment to estimate tax due.

Common mistakes and caveats

  • Federal capital gains rules are separate.
  • Loss limits and deductions can change results.
  • Local taxes are not included.

FAQ

Does Massachusetts tax capital gains differently?

Massachusetts generally taxes capital gains as income. This tool estimates the state-level impact.

Last updated & sources

Last updated January 27, 2026.

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