Massachusetts LLC Taxes Explained: 5% Flat + the Surtax (2026)
Default LLC income generally passes to owners unless classification or an applicable entity election changes the result. Most Massachusetts individual income is taxed at 5%, with an additional 4% on 2026 taxable income above $1,107,750. Corporate excise and eligible PTE elections are separate from the $500 annual report; the report is not the complete recurring tax bill.
Default LLC income generally passes to owners unless classification or an applicable entity election changes the result. Most Massachusetts individual income is taxed at 5%, with an additional 4% on 2026 taxable income above $1,107,750. Corporate excise and eligible PTE elections are separate from the $500 annual report; the report is not the complete recurring tax bill. For tax years beginning January 1, 2026 or later, eligible PTEs may elect Chapter 63D’s 5% excise, Chapter 63E’s additional 4% excise, or both. Chapter 63E applies to the covered portion of each qualified member’s distributive income above the indexed surtax threshold. Qualified members receive a 90% credit for their attributable excise paid, with required electronic elections/returns. The 2026 individual surtax threshold is $1,107,750. Eligibility, bases, owner credits and deadlines require the current DOR instructions; these elections are excluded from the illustration.
- State income tax
- 5% flat
- Surtax
- +4% above $1,107,750 (2026)
- Entity-level tax (default LLC)
- None
- Corporate excise (if elected)
- 8% + $456 min
- Sales tax
- 6.25% — no local rates
- S-Corp threshold
- Individual wage/cost analysis
The 4 Layers of Massachusetts LLC Taxation
Federal: income + self-employment tax
Pass-through profits hit your 1040 at your federal bracket, plus 15.3% SE tax on 92.35% of net profit — usually the biggest line.
Massachusetts income tax: flat 5%
Most ordinary individual income is taxed at 5%. The additional 4% surtax applies above $1,107,750 for 2026, using the return’s total covered taxable income; other income categories and deductions require separate treatment.
Entity level: only the $500 report
Default LLC income generally passes to owners unless classification or an applicable entity election changes the result. Most Massachusetts individual income is taxed at 5%, with an additional 4% on 2026 taxable income above $1,107,750. Corporate excise and eligible PTE elections are separate from the $500 annual report; the report is not the complete recurring tax bill.
Sales & meals tax: 6.25% (if applicable)
Collected from customers on taxable sales — one statewide rate, zero local sales taxes, clothing under $175 exempt. Meals run ~7% with the local option. See Step 7.
Limited 2026 Tax Illustration and Surtax Threshold
Massachusetts LLC Tax Estimator
Single-member default taxation · slides to $1.5M to show the surtax live · educational estimate
Limited 2026 single-owner illustration: assumes only the displayed earned income, 92.35% SE base, $184,500 Social Security wage base, 2.9% Medicare and illustrative single-filer additional Medicare above $200,000. The deductible employer-half excludes additional Medicare. Models 5% Massachusetts tax and the $1,107,750 surtax threshold after that assumed deduction. Omits federal income tax, Massachusetts exemptions/deductions and adjustments, QBI, credits, PTE elections and other income. It is not a complete return.
The Millionaire Surtax, Explained
The 2026 individual surtax is an additional 4% on covered taxable income above $1,107,750 per return. Other income can affect the result. For tax years beginning January 1, 2026 or later, eligible PTEs may elect Chapter 63D’s 5% excise, Chapter 63E’s additional 4% excise, or both. Chapter 63E applies to the covered portion of each qualified member’s distributive income above the indexed surtax threshold. Qualified members receive a 90% credit for their attributable excise paid, with required electronic elections/returns. The 2026 individual surtax threshold is $1,107,750. Eligibility, bases, owner credits and deadlines require the current DOR instructions; these elections are excluded from the illustration.
The S-Corp Question: Wages, Costs and Eligibility
An S election requires eligible ownership, reasonable wages, payroll and separate Massachusetts excise analysis; there is no universal profit threshold for savings. Distributions remain subject to applicable Massachusetts income tax. For tax years beginning January 1, 2026 or later, eligible PTEs may elect Chapter 63D’s 5% excise, Chapter 63E’s additional 4% excise, or both. Chapter 63E applies to the covered portion of each qualified member’s distributive income above the indexed surtax threshold. Qualified members receive a 90% credit for their attributable excise paid, with required electronic elections/returns. The 2026 individual surtax threshold is $1,107,750. Eligibility, bases, owner credits and deadlines require the current DOR instructions; these elections are excluded from the illustration.
Your Massachusetts Tax Calendar
| Date | What's Due |
|---|---|
| Jan 15 / Apr 15 / Jun 15 / Sep 15 | Quarterly estimated taxes — federal and Massachusetts, on pass-through profit |
| Mar 15 | Form 1065 (multi-member LLCs) + K-1s |
| Apr 15 | Form 1040 + Massachusetts Form 1 (the state's individual return) |
| Your anniversary date | $500 annual report — Corporations Division, zero reminders |
| Monthly/Quarterly | Sales / meals tax returns via MassTaxConnect per your assigned schedule |
Plan reporting fees, owner taxes and possible entity elections separately. Compare actual wages, deductions, other income, election eligibility and compliance costs; a flat percentage set-aside cannot establish the amount due.
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2026 PTE Elections and Owner Credits
For tax years beginning January 1, 2026 or later, eligible PTEs may elect Chapter 63D’s 5% excise, Chapter 63E’s additional 4% excise, or both. Chapter 63E applies to the covered portion of each qualified member’s distributive income above the indexed surtax threshold. Qualified members receive a 90% credit for their attributable excise paid, with required electronic elections/returns. The 2026 individual surtax threshold is $1,107,750. Eligibility, bases, owner credits and deadlines require the current DOR instructions; these elections are excluded from the illustration.
Massachusetts DOR PTE elections.
Massachusetts LLC — FAQ
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