Updated September 4, 2026. Quick answer: Massachusetts charges every S-corp a minimum $456 excise tax that a plain LLC or partnership never owes, and once total receipts pass $6 million, adds an income measure of 2% to 3% on top of it.
Does this state require its own election
No separate Massachusetts filing exists to obtain S-corp status; the federal election controls. Massachusetts recognizes federal S status automatically, with no separate state filing.
“Massachusetts recognizes federal S corporation status for purposes of M.G.L. c. 62 and M.G.L. c. 63, and has no separate S corporation election process.”
830 CMR 62.17A.2
What it costs at the entity level
Every Massachusetts corporation, S or C, owes a minimum excise of $456 plus a non-income property measure. Above $6 million in total receipts an income measure phases in: two-thirds of the standard business-corporation rate between $6 million and $9 million, and the full differential rate above $9 million. None of this applies to an LLC or partnership.
| What Massachusetts charges | Figure |
|---|---|
| Rate | 2.0% of net income for total receipts $6 million to $9 million; 3.0% for total receipts of $9 million or more; plus a non-income property measure of $2.60 per $1,000 |
| Minimum | $456 minimum excise, owed by every corporation including S-corps regardless of income |
“at least $6,000,000 but less than $9,000,000 … two-thirds of the rate specified in clause (2) … [$9,000,000 or more:] subtracting the rate applicable to Part B taxable income … from the rate applicable to business corporations”
Mass. Gen. Laws c. 63, § 32D
The comparison against a plain LLC
A small Massachusetts S-corp with a loss year still owes the $456 minimum; a same-size LLC owes nothing comparable. A larger one crossing $6 million in receipts adds a 2% to 3% income measure an LLC of the same size never sees.
What this does not model
This page does not model the non-income property measure ($2.60 per $1,000) beyond naming its rate; it applies to net worth apportioned to Massachusetts and was not computed for a worked example.
No federal tax modelling is repeated here; see the federal S-corp election calculator for the payroll-tax and QBI mechanics this page assumes but does not recompute. No personal Massachusetts income tax on the pass-through income itself is modelled either.
Sources
Every figure on this page is read from the text quoted above, fetched directly from the state’s own site or code, as read on September 4, 2026.
| What it establishes | Source |
|---|---|
| Whether Massachusetts requires its own S-corp election | 830 CMR 62.17A.2 |
| What Massachusetts charges an S-corp at the entity level | Mass. Gen. Laws c. 63, § 32D |
General consumer information, not financial, tax or legal advice. State rules are as published by the cited source on September 4, 2026 and change; your own facts govern, and an S-corporation election is a decision to take with a tax professional who has seen your books.