What are the business tax requirements in Massachusetts?
Massachusetts has several tax obligations for businesses, and which ones apply depends on your structure, whether you have employees, and what you sell.
Corporations pay corporate excise tax, which combines an 8% tax on net income allocated to Massachusetts plus a smaller tax based on tangible property or net worth. S corporations and partnerships don’t pay entity-level income tax, but they still file informational returns with the Department of Revenue and may owe a minimum excise. Sole proprietors and single-member LLCs report business income on their personal Massachusetts return and pay the flat 5% income tax rate. Higher earners now face an additional 4% surtax on income above $1 million.
If you sell tangible goods or certain taxable services, you must register with the Department of Revenue and collect 6.25% sales tax. Filing frequency depends on how much you collect. Businesses with more than $100 per month in liability file monthly, while smaller amounts allow quarterly filing. Returns are due by the 20th of the month following the reporting period. Sales tax compliance requires tracking what’s taxable (not all services are) and remitting on time to avoid penalties.
Employers have additional obligations. You must register for Massachusetts withholding tax and remit what you withhold from employee wages on a schedule based on your liability. You also register with the Department of Unemployment Assistance and pay state unemployment insurance quarterly. The rates vary based on your experience rating and industry.
Estimated tax payments apply if you expect to owe more than $400 in Massachusetts income tax for the year. Quarterly estimates are due on the 15th of April, June, September, and January. Corporations follow a similar estimated payment schedule. Underpaying triggers penalties and interest.
Every entity registered with the Secretary of the Commonwealth must file an annual report. Corporations file within 2.5 months of their fiscal year end. LLCs file by their anniversary date each year. Missing this filing can put you out of good standing, which creates problems with banking, contracts, and eventually dissolution.
Working with an Andover, MA bookkeeper familiar with Massachusetts requirements helps you stay on top of these deadlines. The filings themselves aren’t complicated once you know what applies to your business, but missing one or calculating something incorrectly creates problems that compound with penalties and interest. Most small businesses deal with at least two or three of these tax types, and keeping them straight is part of running a compliant operation in the state.
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