The surtax arrived with the Fair Share Amendment and took effect for the 2023
tax year. It is not a tax on wealthy people in the way most sellers assume. It is a
tax on taxable income in one year, and a capital gain is taxable income.
A landlord earning $95,000 a year has never been near the threshold. Sell a
three-decker held since the nineties and the gain alone can clear it.
It is a surtax on the excess, not on everything
Cross the line by $200,000 and the 4% applies to that $200,000, not to your whole
income. It is a marginal rate, not a cliff that reprices dollar one. That matters,
because the panic version of this is worse than the real one.
The numbers
| Item | Rate | Notes |
| Massachusetts long-term capital gain | 5% | held over one year |
| Massachusetts short-term gain | 8.5% | held one year or less |
| Surtax threshold | $1,107,750 | 2026, indexed to inflation |
| Surtax rate above it | 4% | on the excess only |
| Effective rate above the line | 9% | long-term gain |
What it looks like on a real sale
A three-decker bought in Quincy in 2004 for $245,000, improved by $60,000,
sold for $850,000. The owner earns $95,000 from a job and files jointly.
Massachusetts taxable income in the year of sale
Wages$95,000
Gain on the sale$652,924
Massachusetts taxable income$747,924
That one lands under the threshold, and no surtax is due. Push the sale
price to $1.3M, or add a second property in the same year, and it clears. The
surtax is a function of the whole year, not the deal.
Three ways it gets avoided
Split the sale across two tax years
An instalment sale under IRC 453 spreads the gain across the years payments are
received. Two years of gain under the threshold beats one year over it. It also
means carrying paper on the buyer, which is its own decision.
A 1031 exchange
Defers the entire federal and state gain into a replacement property. Strict
clock: 45 days from closing to identify, 180 days to close. It has to be arranged
before the sale, a qualified intermediary must hold the proceeds. Once the
money hits your account it is too late.
Timing against other income
If a large bonus, a Roth conversion or a business sale is already landing this
year, moving the property sale to January can be the whole difference.
The mistake that costs the most
Selling in December when January would have done. The threshold resets with the
calendar year, and nothing about a closing date is sacred.
Common questions
Does the surtax apply to the whole gain or just the part over the threshold?
Only the part over $1,107,750. It is a marginal 4% on the excess, not a recalculation of your whole income at a higher rate.
Is the threshold per person or per couple?
It applies to taxable income on the return. Married couples filing jointly share one threshold rather than getting two, which is a common and expensive assumption to get wrong.
Does a 1031 exchange avoid the Massachusetts surtax?
Yes, because there is no recognised gain to tax in that year. The deferral applies at the state level as well as federally. The gain comes back when you eventually sell without exchanging.
Does the threshold change each year?
Yes, it is indexed to inflation. It was $1,000,000 when the amendment took effect for 2023 and is $1,107,750 for 2026. Always check the current year.
Sources & as-of date
- Massachusetts Fair Share Amendment (4% surtax), threshold indexed annually.
- IRC §453 instalment sales; IRC §1031 like-kind exchanges.
- Rates and thresholds current as of September 2026. Tax figures move annually ,
check the current year before relying on them.
Not tax or legal advice. This is published research, not a professional
opinion on your situation. Take it to a CPA or an attorney before you act on it.