Get expert tax and accounting help!
Call (866) 681-2140
Call (866) 681-2140
You need a tax accountant in Boston who knows Massachusetts tax. Dimov Tax prepares your federal and Massachusetts returns, keeps your books and plans ahead of each deadline.
Call (866) 681-2140
Tax preparation for individuals, landlords and businesses, by CPAs and Enrolled Agents.
Monthly bookkeeping and payroll for Boston small businesses.
A fixed quote before we start, and replies within 24 hours once you are a client.
Federal and Massachusetts returns, including RSUs, stock options, crypto, rentals and moves between states.
Returns for S corporations, C corporations, partnerships and LLCs, plus entity choice and owner pay reviewed before the year ends. We also check whether the chapter 63D pass-through entity excise, a 5% elective tax with a refundable 90% credit to owners, can lower your federal bill.
We do the monthly bookkeeping Boston startups, shops and landlords need, in QuickBooks, Xero or your own setup, with quarterly tax estimates included.
Payroll setup, state registrations and quarterly filings, including a reasonable salary for S corporation owners.
Audits, reviews and compilations, plus financial due diligence before you buy a company.
Massachusetts taxes wages and business income at a flat 5%. It adds a 4% surtax, known as the Massachusetts millionaires tax, on 2026 income above $1,107,750, per the Department of Revenue.
A single Boston filer with $1,500,000 of 2026 taxable income, all at the 5% rate, owes:
| Part of income | Rate | Massachusetts tax |
|---|---|---|
| First $1,107,750 | 5% | $55,387.50 |
| Next $392,250 | 5% plus the 4% surtax | $35,302.50 |
| Total | Surtax share: $15,690 | $90,690.00 |
We assume no income taxed at other Massachusetts rates. If you can time a taxable stock-option exercise or take eligible business-sale payments in different years, you may keep more taxable income below each year's surtax threshold.
We always had a 24-hour rule at the company. And really, if you ask me, it's a same day rule. The same day rule means that if you contact us and you're a client, you'll get a response that day, worst case, within 24 hours.
Call or send the form with your income sources and the returns you file.
We price the work before we start, with no hourly billing.
You send them through our encrypted client portal, not by email.
A CPA or Enrolled Agent walks you through the return before we file it.
I switched to Dimov from my previous CPA, and I'm very impressed. The team is incredibly fast to respond and has a streamlined onboarding process that eliminated unnecessary back-and-forth. They processed and filed everything right on time. Easy to work with and I will definitely continue using them
10,000+ Successful tax filings over the years
3,000+ Five star reviews
Federally Enrolled IRS Agents on staff
7am to 8pm Seven days a week
We quote a fixed fee before we start, based on:
The light end is a W-2 employee with one Massachusetts return and no other income. These are the factors, not a quote.
Our Boston CPA firm office is at 867 Boylston St, Boston, MA 02199. If you want to meet your tax accountant in Boston in person, we see clients there by appointment only.
We work with clients across Downtown Boston, Back Bay, the South End, Cambridge, Brookline and Newton, and by phone or video anywhere. That includes biotech and life sciences employees with equity pay, hospital and university staff, finance professionals and startup founders. Dimov Tax is certified to practice in all 50 states.
Call (866) 681-2140 to book a visit or a call. Meet our team.
Send us a short note on your income and the returns you file. A CPA or Enrolled Agent replies with next steps and a fixed quote.
Or call (866) 681-2140.
