Massachusetts Capital Gains Tax (2026)
Massachusetts capital gains tax rate: Short-term: 8.5%; Long-term (1+ year): 5.0%; Over $1M: 9.0%
Massachusetts has a unique capital gains tax structure: short-term gains (held less than 1 year) are taxed at 8.5%, while long-term gains are taxed at the standard 5% flat rate. Gains over $1M are subject to the additional 4% Millionaires Tax surtax.
Federal Capital Gains Rates Still Apply to Massachusetts Residents
All Massachusetts residents also owe federal capital gains tax. Federal long-term capital gains rates are 0% (income up to ~$47,025 single), 15% (income up to ~$518,900 single), or 20% (above). High earners may also owe the 3.8% Net Investment Income Tax (NIIT).
Short-Term vs. Long-Term Capital Gains in Massachusetts
Assets held less than one year are taxed as ordinary income at federal rates (10%–37%). Assets held over one year qualify for the preferential 0%/15%/20% federal rates. Massachusetts has a unique capital gains tax structure: short-term gains (held less than 1 year) are taxed at 8.5%, while long-term gains are taxed at the standard 5% flat rate. Gains over $1M are subject to the additional 4% Millionaires Tax surtax.
Planning Considerations for Massachusetts Investors
- Tax-loss harvesting can offset gains at both state and federal levels
- Timing asset sales to control income year and bracket placement
- Massachusetts taxes capital gains at Short-term: 8.5%; Long-term (1+ year): 5.0%; Over $1M: 9.0% — factor this into net-of-tax return calculations
- Qualified Opportunity Zone investments can defer federal and potentially state gains
Frequently Asked Questions
What is the capital gains tax rate in Massachusetts?
Massachusetts has a unique capital gains tax structure: short-term gains (held less than 1 year) are taxed at 8.5%, while long-term gains are taxed at the standard 5% flat rate. Gains over $1M are subject to the additional 4% Millionaires Tax surtax. Federal rates (0%, 15%, 20% for long-term gains) also apply regardless of state.
Does Massachusetts have a different rate for long-term vs. short-term capital gains?
Yes — Massachusetts taxes short-term gains at 8.5% and long-term gains at the standard 5.0% flat rate. Gains over $1M are subject to an additional 4% Millionaires Tax surtax.
How do I reduce capital gains tax in Massachusetts?
Strategies include: holding assets over one year for federal long-term rates, tax-loss harvesting to offset gains, contributing to retirement accounts (401k, IRA), investing in Qualified Opportunity Zones, and timing sales across tax years. In Massachusetts, capital gains are taxed at up to Short-term: 8.5%; Long-term (1+ year): 5.0%; Over $1M: 9.0%, so these strategies reduce both federal and state tax.
Is this capital gains tax calculator free for Massachusetts?
Yes. Enter your gain amount, holding period, and annual income. The calculator applies both federal rates (0%/15%/20% long-term) and Massachusetts's Short-term: 8.5%; Long-term (1+ year): 5.0%; Over $1M: 9.0% state rate to estimate your total tax owed.