Tax

Massachusetts PTET (Pass-Through Entity Excise): How It Works

Massachusetts's Pass-Through Entity Excise — the PTET equivalent — lets passthrough owners deduct state tax federally by paying at the entity level. Here's the Massachusetts version.

By Aparna Devalla, CPA3 min · 5 slidesUpdated June 15, 2026

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Massachusetts PTE Excise Basics

Massachusetts personal income tax: 5% flat rate on most income, with a 9% surtax on income over $1M (the 'Millionaires' Tax').
PTE Excise election lets passthrough entities pay Massachusetts state tax at the entity level, federally deductible.
Especially valuable for owners over the $1M income threshold — the 9% surtax becomes deductible federally via PTE Excise.
Election is annual, made on Form 63D-ELT.

Rate and Calculation

PTE Excise rate: 5% of qualified income, plus the 4% surtax on the portion of qualified income above $1M (for the owner-level Millionaires' Tax).
Effectively recreates the personal tax that would otherwise be owed on Schedule A — but federally deductible at the entity level.
Estimated payments due quarterly per Massachusetts schedule.
Owners receive a credit on their Massachusetts personal return for their share of PTE Excise paid.

When the Math Favors Election

Owners over the $1M threshold see the largest benefit: the 9% surtax becomes federally deductible.
Owners well above $200K with substantial business income see modest but real benefit.
Below ~$200K of business income, the federal benefit shrinks and admin overhead may not justify.
Particularly valuable for high-income MA professionals: lawyers, doctors, consultants in passthrough practices.

Practical Considerations

Non-MA-resident owners of MA passthroughs get an MA credit; home state credit rules vary.
MA-resident owners with non-MA passthrough income: PTE Excise applies only to MA-sourced.
Document the analysis annually — both the decision and the math supporting it.
Massachusetts-resident high-income professionals benefit most — particularly those above the Millionaires' Tax threshold.
Need MA PTE Excise modeling? Rubric Financial models PTET / PTE Excise across all client home states as part of annual tax planning.

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