Massachusetts Capital Gains Tax Rate (2026)
Massachusetts capital gains tax overview
Massachusetts taxes most capital gains at 5%. An additional 4% "millionaires tax" applies to income over $1,083,150 (2026), bringing the effective top rate to 9%.
Federal + Massachusetts combined rates
Your total capital gains tax bill includes both layers — federal and state. Here is what a Massachusetts investor pays in 2026 for long-term gains:
| Federal Long-Term Rate | Massachusetts State Rate | Combined Rate | Plus NIIT (if applicable) |
|---|---|---|---|
| 0% | 9% | 9% | 12.8% |
| 15% | 9% | 24% | 27.8% |
| 20% | 9% | 29% | 32.8% |
The NIIT (Net Investment Income Tax) adds an extra 3.8% for taxpayers whose MAGI exceeds $200,000 (single) or $250,000 (married filing jointly). It is a federal tax only — Massachusetts does not have an equivalent.
How Massachusetts compares to other states
Massachusetts's top rate of 9% places it among the highest-taxed states for capital gains. For comparison:
- Zero-tax states (FL, TX, NV, etc.): 0% — total with 15% federal = 15%
- Low-rate states (AZ, IN, PA): 2.5–3.1% — total with 15% federal = 17.5–18.1%
- Massachusetts: 9% — total with 15% federal = 24.0%
- High-rate states (NY, NJ): 10.75–10.9% — total with 15% federal = ~26%
- California: 13.3% — total with 15% federal = 28.3%
Tax-reduction strategies for Massachusetts residents
With a top state rate of 9%, minimizing capital gains tax is particularly important in Massachusetts. Key strategies:
- Hold over 1 year for long-term federal rates (0/15/20%). Massachusetts does not offer a preferential state rate, but federal savings alone are often 7–17%.
- Tax-loss harvesting: Offset your gains with losses realized in the same year. A $20,000 loss offsets $20,000 of gains dollar-for-dollar, saving up to 29% ($5,800) on that $20,000 at top rates.
- 0% bracket planning: In lower-income years (retirement, sabbatical, between jobs), realize gains at the federal 0% rate. You still owe Massachusetts state tax, but eliminating the federal component is significant.
- Donate appreciated stock directly to charity or a donor-advised fund to avoid capital gains tax entirely while generating a charitable deduction for the full fair market value.
- Installment sales: If selling a business or real estate, structuring as an installment sale spreads the gain over multiple years, potentially keeping each year's gain in a lower bracket.
Detailed Massachusetts capital gains tax rules
Tax history and legal basis
Massachusetts taxes most income at a flat 5% rate. However, effective January 2023, a 4% millionaire's surtax applies to income over $1 million — including capital gains.
Exemptions and special treatment
Massachusetts taxes short-term gains (held under 1 year) at 8.5% and long-term gains at 5%. This is unusual — MA is one of few states that differentiates between short and long-term gains. Gains over $1 million face the additional 4% surtax (total: 9% on long-term gains above $1M).
Filing requirements
File Form 1 (resident). Massachusetts has unique rules — Schedule B is used for interest/dividends/gains. The $1M surtax threshold applies to total taxable income, not just gains. Estimated payments required if owing $400+. Filing deadline is April 15.
Recent changes and legislative updates
The 2023 'Fair Share Amendment' (Question 1) added a 4% surtax on income over $1 million. For investors with large capital gains, this can push the MA rate from 5% to 9% on the portion above $1M. The threshold is NOT indexed for inflation, so more taxpayers will be affected over time.
Worked example: $50,000 capital gain in Massachusetts
Here's exactly what a Massachusetts resident would owe on a $50,000 long-term capital gain with $80,000 in other income (single filer, 2026):
| Component | Amount | Notes |
|---|---|---|
| Capital gain | $50,000 | Long-term (held over 1 year) |
| Federal tax (15%) | −$7,500 | Based on $80,000 ordinary income + gain |
| Massachusetts state tax (5%) | −$2,500 | Applied to the full gain amount |
| Total tax owed | −$10,000 | Federal + state combined |
| You keep | $40,000 | 80.0% of your gain |
After both federal and Massachusetts state tax, you keep $40,000 of your original $50,000 gain. The effective combined rate is 20.0%.
Frequently asked questions — Massachusetts
Does Massachusetts tax short-term and long-term gains differently?
No — Massachusetts taxes both short-term and long-term capital gains as ordinary income at the same rates as wages. There is no state-level preferential rate for patience. The federal system, however, taxes long-term gains at 0/15/20% vs. up to 37% for short-term — a significant difference that applies regardless of state.
Do I need to file a Massachusetts tax return if I only have capital gains?
If you have capital gains income and meet Massachusetts's filing threshold, you are required to file a Massachusetts state income tax return. The threshold is typically similar to the standard deduction amount — check the MA Department of Revenue for the current year's filing requirements.
What if I moved to Massachusetts mid-year?
If you moved to Massachusetts during the year, you are a part-year resident. Massachusetts generally taxes capital gains realized while you were a Massachusetts resident. Gains realized before you moved may be taxable by your prior state. Keep detailed records of when each sale occurred relative to your move date.