Massachusetts Bookkeeping Services

Massachusetts never hands you one number when two will do: the corporate excise adds an 8% income measure to a property-or-net-worth measure and then puts a $456 floor under the total, the LLC annual report costs $500 and falls on a date only your formation paperwork remembers, pass-through owners weigh a 5% entity-level election against a 4% surtax it cannot cover, and every city assessor in the Commonwealth expects a personal property list by March 1. We have kept books for businesses remotely since 2005, and dedicated bookkeepers from $75/month keep every one of those filings tax-ready.

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On This Page

• Massachusetts’s small-business tax landscape
• The corporate excise: two measures and a $456 floor
• Pass-through owners: the 5% election and the 4% surtax
• The $500 annual report and other Secretary filings
• Sales tax: one rate everywhere — with a 7% twist on meals
• Hiring in Massachusetts: UI and PFML
• Massachusetts cities we serve
• Massachusetts FAQs

Massachusetts’s Small-Business Tax Landscape

Figures from Mass.gov, the Secretary of the Commonwealth, and Boston.gov official sources — figures verified July 2026. This is bookkeeping context, not tax advice — verify current-year specifics with mass.gov / boston.gov and your CPA before filing.

The Corporate Excise: Two Measures and a $456 Floor

Most states tax corporate income once. Massachusetts taxes it twice over — the corporate excise is the sum of an 8.0% tax on net income apportioned to the Commonwealth and a second measure of $2.60 per $1,000 of either Massachusetts tangible property or net worth, depending on how asset-heavy the corporation is. Corporations whose qualifying tangible assets in Massachusetts reach 10% of total qualifying assets pay on tangible property; everyone else pays on net worth. And whatever the math produces, the excise never drops below $456 — a floor that applies even in a loss year.

The bookkeeping consequence is that your balance sheet is now a tax document, not just a lender formality. The property-or-net-worth measure is computed from asset values and equity that come straight out of the ledger — so ghost assets that were sold or scrapped but never written off, and retained-earnings figures that drift because reconciliations slipped, translate directly into excise dollars. A maintained asset schedule and monthly reconciliations are standard in every Maxim Liberty engagement, which is exactly what makes the two-measure calculation a formality for your CPA instead of a forensic project. That is the case for daily virtual bookkeeping all year, not a cleanup in March.

Pass-Through Owners: The 5% Election and the 4% Surtax

Since the federal SALT deduction cap, Massachusetts has offered pass-through entities a workaround: S corporations, partnerships, and LLCs taxed as either may elect an entity-level excise of 5% on income taxable in Massachusetts, with qualified members claiming a credit for 90% of their share of the excise paid. Elect, and the entity deducts state tax federally that the owners could not; skip it, and the deduction stays capped. Whether the election pays off in your situation is a CPA question — but the election is computed from the entity’s books, so the books have to be clean either way.

The wrinkle worth planning around: the PTE excise is fixed at 5% by statute and cannot be increased to cover the 4% surtax on personal taxable income above $1,107,750 (the 2026 threshold, which adjusts annually for inflation). A strong year that pushes a pass-through owner past that line means the surtax lands on the personal return regardless of the entity-level election — which makes accurate, current profit numbers a planning tool, not an afterthought. Owners who see their real year-to-date position in October can time income and expenses; owners who see it in February can only file.

The $500 Annual Report and Other Secretary Filings

Massachusetts charges LLCs one of the steepest annual report fees in the country: $500, every year, due on or before the anniversary date of the original certificate of organization. That anniversary trigger is the trap — there is no universal calendar date to remember, so the deadline lives wherever your formation paperwork does, and it is routinely missed by owners who assume annual reports work like tax returns. Corporations file too, at $125, within two and a half months after fiscal year end. Falling behind with the Corporations Division is a status problem that surfaces at loan closings, license renewals, and due diligence — never at a convenient time.

The other filing that surprises new Massachusetts owners is local: every business owning taxable personal property — equipment, furniture, fixtures — owes its city or town assessors a Form of List (State Tax Form 2) by March 1, covering property held as of January 1. Skip it and the assessors estimate your property from similar businesses, with your abatement rights sharply limited. The list is generated almost entirely from the asset schedule in your books; if that schedule is current, March 1 is a ten-minute filing.

Sales Tax: One Rate Everywhere — With a 7% Twist on Meals

Here Massachusetts is genuinely simple: the sales and use tax is 6.25% statewide, and unlike Texas or Illinois there are no local add-ons on general sales — the rate is the same in Boston, Worcester, and Stockbridge. The exception is the restaurant table: cities and towns may adopt a 0.75% local option meals excise, and where adopted — Boston included — the total on restaurant meals is 7%. Returns run monthly or quarterly through MassTaxConnect depending on volume, and the perennial bookkeeping failure is the same everywhere: collected-but-unremitted tax quietly commingled with operating cash. We book sales and meals tax to a dedicated liability account from the first transaction, so remittance day is a transfer, not a scramble. Months behind on any of this? Catch-up bookkeeping rebuilds the year fast.

Hiring in Massachusetts: UI and PFML

Payroll is where Massachusetts stacks obligations. Unemployment insurance through the Department of Unemployment Assistance runs on a $15,000 wage base; new employers pay 2.42% for 2026 (new construction employers 6.08%), and established employers get an experience rate on the DUA notice issued by January 31 — which is why the books should never hard-code last year’s figure. Quarterly reports and payments are due by 3 p.m. on April 30, July 31, October 31, and January 31, and late payments accrue 12% interest.

On top of UI sits Paid Family and Medical Leave. For 2026 the contribution is 0.88% of eligible wages for employers with 25 or more covered individuals; smaller employers remit an effective 0.46% because they owe no employer share of the medical contribution. Part of the contribution can be withheld from employee wages, part cannot — which means every payroll run splits each dollar across employer expense and employee withholding, and the ledger has to keep those buckets straight all year. Tracking payroll liabilities so the quarterly filings reconcile to the books is exactly the kind of unglamorous work a dedicated bookkeeper keeps current without being asked.

Massachusetts Cities We Serve

Dedicated local guide: Boston — plus Cambridge, Worcester, Springfield, Quincy, Lowell, and every corner of the Commonwealth, all served remotely. Browse all locations.

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Massachusetts Bookkeeping FAQs

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