Massachusetts Gambling Tax Calculator
This calculator provides estimates for informational purposes only. It is not tax advice. Tax laws change frequently and individual circumstances vary. Consult a qualified tax professional for advice specific to your situation. Tax rates and rules reflect 2026 tax year. Last updated April 2026.
Gambling tax in Massachusetts
Massachusetts charges a flat 5% on gambling winnings and refuses the loss deduction most flat-rate states allow. The narrow exception covers losses at Massachusetts-licensed casinos and racetracks. Online sportsbook losses are not deductible, so for nearly every mobile bettor the state line here is 5% of the gross winning column.
Massachusetts at a glance
Massachusetts adds a 4% surtax on income above $1,083,150 (2026).
Massachusetts deducts losses at MA-licensed casinos and racetracks only. Online sportsbook losses are not deductible, so the state figure here is based on gross winnings.
A millionaire surtax a good season can trigger
Above $1,083,150 of income Massachusetts adds a 4% surtax, taking the marginal rate to 9%. That threshold looks remote until you remember winnings are counted gross. A bettor with $200,000 of salary who ran $1,000,000 of winnings through the year is over the line on the winning column alone, even if the losing column brought actual profit back to five figures. The calculator models the surtax by stacking gambling income on your other income and charging 4% only on the slice that crosses the threshold, so you can see how much of a big season lands in surtax territory.
Massachusetts gambling tax FAQ
Can I deduct online sportsbook losses in Massachusetts?
No. The Massachusetts deduction is written around losses at state-licensed casinos and racetracks, so this calculator treats online sportsbook losses as non-deductible.
When does the 4% surtax start applying?
Once your total income including gross gambling winnings passes $1,083,150. Only the portion above that threshold is surtaxed.
Betting outside Massachusetts?
The main gambling tax calculator covers all 51 US jurisdictions, with the same federal brackets, the 90% loss deduction cap and the standard versus itemized comparison.
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