Massachusetts Business Taxes for LLCs
What business taxes does a Massachusetts LLC need to pay? Learn about pass-through income tax, self-employment tax, sales tax, and the corporate excise — with state rates and filing details.
Bizee Editorial Staff
Editorial Team
Massachusetts LLC tax facts at a glance
Filing fee: $500 annual report fee
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State agency: Massachusetts Department of Revenue (MassTaxConnect); Corporations Division of the Secretary of the Commonwealth
Annual report due: On or before the anniversary date of the LLC's original formation or registration
State tax rate: 5% flat individual income tax rate on pass-through LLC income; 6.25% sales tax; 8% net income + $2.60 per $1,000 net worth corporate excise (minimum $456) if taxed as a corporation
How Massachusetts taxes your LLC
Most Massachusetts LLCs don't pay tax at the entity level. By default, a single-member LLC is treated as a disregarded entity and a multi-member LLC is treated as a partnership — meaning profits pass through to the owners, who report and pay tax on their individual returns. Massachusetts follows federal tax classification for this purpose.
The taxes that actually apply to your LLC depend on how it's classified, whether you sell taxable goods or services, and whether you have employees. The main categories are: state income tax on your share of profits, federal self-employment tax, Massachusetts sales tax if you sell taxable products, and payroll taxes if you pay employees. If your LLC elects to be taxed as a corporation, a separate corporate excise tax applies instead.
- State income tax on your share of LLC profits (5% flat rate)
- Federal self-employment tax on net earnings (15.3% combined rate)
- Massachusetts sales tax at 6.25% if you sell taxable goods or certain services
- Payroll taxes if you have employees
- Corporate excise tax only if your LLC elects corporate tax treatment
State income tax and self-employment tax
When your LLC is taxed as a disregarded entity or partnership, there's no Massachusetts income tax at the LLC level. Each owner reports their share of the LLC's profits on their own Massachusetts return and pays the state's flat 5% individual income tax rate on that income.
Single-member LLC owners report business income on Massachusetts Form 1 using Schedule C. Multi-member LLC owners report their share of partnership income on Form 1 or Form 1-NR/PY using Schedule E, after the LLC files a Massachusetts partnership return (Form 3) and issues Schedule K-1s to each member.
On top of state income tax, active LLC owners owe federal self-employment tax on net earnings — 15.3% combined (12.4% Social Security plus 2.9% Medicare). Massachusetts doesn't have a separate state self-employment tax, but the federal obligation is real and worth planning for. A tax professional can help you figure out estimated payment schedules so you're not caught short at year end.
Massachusetts sales and use tax
Massachusetts charges a 6.25% sales tax on retail sales of tangible personal property and certain taxable services. If your LLC sells physical products — or qualifying services — to customers in Massachusetts, you're generally required to collect and remit that tax to the Department of Revenue.
One thing that catches some business owners off guard: Massachusetts has no local sales tax rates. The 6.25% rate is statewide and uniform, which keeps the math straightforward. A companion use tax at the same 6.25% rate applies when you buy taxable items without paying sales tax — for example, through an out-of-state vendor who didn't collect it.
Common exemptions include most food and clothing below certain thresholds, but the rules depend on the specific item and transaction. If you're unsure whether your products or services are taxable, the Massachusetts Department of Revenue's sales and use tax guide is the right place to check.
Corporate excise tax — when it applies to an LLC
The Massachusetts corporate excise tax does not apply to most LLCs. It applies only if your LLC has elected to be taxed as a corporation for federal tax purposes — in which case Massachusetts treats it as a corporation for state income tax purposes as well.
If the corporate excise does apply, the tax is calculated on both net income (8% rate) and a non-income measure tied to net worth or taxable tangible property allocated to Massachusetts ($2.60 per $1,000). The minimum excise is $456 per taxable year — that floor applies even if credits would otherwise reduce the liability below it.
An LLC subject to the corporate excise files Massachusetts Form 355 (the Business/Manufacturing Corporation Excise Return). If your LLC has elected S Corporation status, a different form applies — Form 355S. A tax professional can help you figure out which form fits your situation and whether the corporate election makes sense for your business.
Federal taxes for Massachusetts LLC owners
Federal taxes for Massachusetts LLC owners follow the same pass-through rules as state taxes. Profits flow to the owners, who report them on their federal individual returns and pay federal income tax at their applicable bracket rates. There's no separate federal LLC tax.
Active owners also owe federal self-employment tax on net earnings — the 15.3% combined rate covering Social Security and Medicare. You can deduct half of that self-employment tax when calculating your adjusted gross income on your federal return, which reduces the taxable base slightly. Most LLC owners pay federal estimated taxes quarterly to avoid underpayment penalties.
Payroll taxes if you have employees
If your Massachusetts LLC has employees, payroll taxes apply on top of everything else. You'll need to withhold Massachusetts income tax from employee wages and remit it to the Department of Revenue, along with federal payroll taxes — the employer's share of Social Security and Medicare.
Massachusetts employers also need to register for and comply with the state's Paid Family and Medical Leave (PFML) program, which involves payroll contributions. The specifics depend on your payroll size and employee count. A payroll provider or tax professional can help you set up withholding correctly from the start — getting it wrong can mean back taxes, penalties, and amended filings.
Registering for Massachusetts business taxes
If your LLC will collect sales tax, withhold employee income tax, or pay any other Massachusetts business tax, you need to register through MassTaxConnect — the Department of Revenue's online portal for business tax accounts. You'll need a federal Employer Identification Number (EIN) before you can register, since MassTaxConnect uses it as your business identifier.
A single-member LLC taxed as a sole proprietorship doesn't file a separate Massachusetts income tax return — the owner reports LLC income on their personal Form 1. But that LLC may still need a MassTaxConnect account if it collects sales tax or has employees. Don't skip registration just because you're a one-person operation.
Annual report requirement
Every Massachusetts LLC must file an annual report with the Corporations Division of the Secretary of the Commonwealth each year. The report is due on or before the anniversary date of your LLC's original formation or registration — not a fixed calendar date, which is a detail that trips up a lot of business owners.
The filing fee for the annual report is $500. This is a state compliance requirement separate from your tax filings — it goes to the Corporations Division, not the Department of Revenue. Missing it can put your LLC out of good standing with the state.
FAQ
It depends on how your LLC is classified and what it does. Most Massachusetts LLCs are taxed as pass-through entities, meaning owners pay Massachusetts state income tax at 5% and federal self-employment tax at 15.3% on their share of profits. If your LLC sells taxable goods, you also collect and remit 6.25% sales tax. The corporate excise tax applies only if your LLC has elected corporate tax treatment.
It depends on the tax type. Pass-through LLC income is taxed at Massachusetts's flat 5% individual income tax rate on each owner's state return. Federal self-employment tax adds 15.3% on net earnings. Sales tax is 6.25% on taxable transactions. If your LLC is taxed as a corporation, the corporate excise is 8% on net income plus $2.60 per $1,000 of net worth, with a $456 minimum.
Yes. Massachusetts has a statewide sales tax of 6.25% on retail sales of tangible personal property and certain taxable services. There are no local sales tax rates — the 6.25% rate applies uniformly across the state. Common exemptions include most food and clothing below certain thresholds, but whether your specific products or services are taxable depends on the item and transaction.
No. Massachusetts doesn't impose a franchise tax on LLCs. The state does have a corporate excise tax, but it applies only to entities taxed as corporations — not to LLCs taxed as disregarded entities or partnerships. If your LLC has elected corporate tax treatment, the corporate excise applies, including a $456 minimum excise per taxable year.
Yes, in most cases. If you expect to owe tax on your LLC income, both Massachusetts and the IRS generally require quarterly estimated tax payments. Missing estimated payments can result in underpayment penalties when you file your annual return. A tax professional can help you figure out the right payment schedule based on your projected income.
Massachusetts doesn't have a separate state self-employment tax. Active LLC owners owe federal self-employment tax at a combined 15.3% rate — 12.4% for Social Security and 2.9% for Medicare — on net earnings from the business. On top of that, Massachusetts taxes the same income at the state's flat 5% individual income tax rate on your Massachusetts return.
It depends on your LLC's structure and activities. At minimum, most Massachusetts LLC owners report pass-through income on their personal state return and pay federal self-employment tax. If you sell taxable goods or services, you need to register on MassTaxConnect and collect 6.25% sales tax. If you have employees, payroll withholding and PFML contributions apply. All Massachusetts LLCs must also file an annual report with the Secretary of the Commonwealth — the filing fee is $500.
