Focus on your business.
We handle your financials.

You have a lot on your plate already. The last thing you need to is to figure out how to keep your books clean, or file your taxes. What are even the right forms to fill? And what if you make mistakes? Small businesses and startups count on Mass Tax Services to handle all of their tax and accounting obligations, while they focus on business.

Corporate Taxes


New Entity Formation

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Tax Preparation/Filing

Avoid mistakes and penalties and get white-glove service filing taxes


We help you keep your books in order so you can focus on business.

Back Taxes

We handle your back taxes

Many years of experience

Leverage our multiple years of experience dealing with all sorts of tax and accounting needs.

Boutique Approach

Rather than serve hundreds of clients, we serve a selected dozen with personalized service by tax pros.

Corporate and Individual

Experience dealing with tax and accounting matters for both individuals (residents and not) and companies.

What we've got experience with...

C-Corps, S-Corps, LLCs and Partnerships

Foreign owned US entities (LLCs, C-Corps, Partnerships)

Technology Startups

State Sales & Franchise Taxes (we are licensed in all states)

S-corp entity election (timing and conversion from LLS and C-Corp)

New Entity Formation (What state is best to form an LLC, C-corp and what entity is best for your business structure)

Payroll and After-the-fact payroll

Retirement planning for small business owners

Big firm capabilities. Small firm white glove service.

With us you don’t become just another client...

Mass Tax Services has an experienced team, with many years working with hundreds of clients of all sizes, from individuals to big corporations. We’re also a small firm. This means we can give personalized service and the attention you deserve. Your financials and taxes are important and that’s why you’ll get the attention and treatment it deserves. Don’t feel like just another dispensable client on a big firm’s roster.

Hear directly from our clients

Don't take our word for it...

“Andrew acted as a trustworthy partner. Quick turnaround and flawless execution of C-Corp tax return filing. Will certainly recommend him.”

Arvinderjit C. — CEO

“Andrew was simply amazing to work with. He is available, cares about his clients, and is very knowledgeable in taxation.”

Bari B — Small Business Owner

“Thank you to Andrew for the Tax consultation. He answered all my questions about opening a corporation in the U.S. for non-residents.”

Andrei V. — CEO

Unsure about something? Need a 2nd Opinion?

Leverage the 15+ years of experience of our team and get a free 15 minute consultation or a 2nd look at your taxes or tax/financial matters. Nothing to lose.