IRS Enrolled Agent Firm · Quincy & Braintree, MA

IRS Enrolled Agent (EA) Firm Serving Greater Boston Since 2017

One Accounting Tax® is a federally licensed IRS Enrolled Agent firm. As an EA firm, we hold the highest credential the IRS grants to tax professionals — and we can represent you before the IRS in all 50 states.

★★★★★ 100+ five-star Google reviews · EA-licensed · Quincy, Braintree & Greater Boston
What Is an Enrolled Agent?

The Highest Tax Credential the IRS Grants

An IRS Enrolled Agent (EA) is a federally licensed tax professional who has demonstrated expertise in tax law by passing a rigorous three-part IRS examination — covering individual taxes, business taxes, and representation before the IRS.

Unlike CPAs or attorneys who may practice in many areas, Enrolled Agents specialize exclusively in taxation. EAs are the only tax professionals directly licensed by the federal government and are authorized to represent taxpayers before the IRS in all 50 states.

At One Accounting Tax®, founder Yi Chen is a licensed IRS Enrolled Agent — bringing nearly 20 years of experience in taxation and finance to every client relationship.

Talk to an Enrolled Agent
EA vs. CPA vs. Tax Preparer

Why an Enrolled Agent Firm Is the Right Choice

Not all tax professionals are the same. Here’s how an IRS Enrolled Agent compares to other options.

EA
Enrolled Agent
CPA
Tax Preparer
Federally licensed by IRS
Tax specialist (exclusive focus)
Varies
IRS representation rights
✓ All 50 states
State licensed only
Audit representation
Handles complex returns
Limited
Year-round IRS support
Varies
Our EA Services

What Our Enrolled Agent Firm Handles

As a federally licensed EA firm, we go beyond basic tax preparation — handling complex situations, IRS matters, and year-round tax support.

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Individual Tax Preparation

Complex individual returns — self-employed, rental income, investments, multi-state, foreign income, and more. Handled by a licensed EA, not a seasonal preparer.

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Business Tax Returns

LLC, S-Corp, C-Corp, and sole proprietor returns. We handle the full business tax picture — including entity selection guidance, payroll taxes, and estimated payments.

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IRS Notice Response

Received a letter from the IRS or Massachusetts DOR? We review it, explain what it means in plain terms, and prepare a professional response on your behalf.

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IRS Audit Representation

If you’re selected for an audit, you don’t have to face the IRS alone. As an EA firm, we represent you directly — communicating with the IRS on your behalf throughout the process.

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Prior-Year & Back Tax Returns

Behind on your filings? We help individuals and businesses get caught up on prior-year returns — reducing penalties and getting you back into compliance.

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Tax Planning & Strategy

Year-round planning to reduce what you owe. Quarterly estimated tax guidance, proactive deduction strategies, and planning for major financial events before they happen.

One Accounting Tax® · EA Firm

Why Clients Trust Our EA Firm

We are more than a tax preparer — we are a year-round tax advisor and federally licensed representative for our clients.

EA
Federally Licensed

IRS Enrolled Agent — the highest credential the IRS grants to tax professionals.

50
All 50 States

EA licensure is federal — we can represent clients and file returns in all 50 states.

20
Nearly 20 Years

Yi Chen brings nearly 20 years of experience in taxation, finance, and real estate.

100+ Five-Star Reviews

Trusted by individuals and businesses across Quincy, Braintree & Greater Boston.

Common Questions

IRS Enrolled Agent FAQ

What is an IRS Enrolled Agent (EA)?
An IRS Enrolled Agent is a federally licensed tax professional who has passed a rigorous three-part IRS examination covering individual taxes, business taxes, and representation. EAs are licensed directly by the federal government — not a state board — and can represent taxpayers before the IRS in all 50 states. It is the highest credential the IRS grants to tax professionals.
What’s the difference between an Enrolled Agent and a CPA?
Both EAs and CPAs are qualified tax professionals who can represent clients before the IRS. The key difference is focus: Enrolled Agents specialize exclusively in taxation, while CPAs may practice in accounting, auditing, and other financial disciplines. EAs are federally licensed, meaning their credential applies in all 50 states — unlike CPAs who are licensed by individual states.
Can an Enrolled Agent represent me if I get audited?
Yes. One of the core privileges of an IRS Enrolled Agent is unlimited practice rights before the IRS — including audit representation, appeals, and collections. If you receive an audit notice, we can represent you directly and communicate with the IRS on your behalf, so you don’t have to face them alone.
Do I need an EA or a CPA for my taxes?
For most individuals and small businesses, an IRS Enrolled Agent is an excellent choice — especially if your situation involves complexity, IRS matters, multi-state returns, or self-employment income. EAs are exclusively focused on tax, which means deep expertise in the area that matters most to you.
Can you help me respond to an IRS notice?
Yes. If you’ve received a notice from the IRS or the Massachusetts Department of Revenue, upload it and we’ll review it, explain exactly what it means, and help you prepare an appropriate response. Many IRS notices are routine and straightforward to resolve — but you should never ignore them.
Where is your EA firm located?
One Accounting Tax® is headquartered at 29 Commercial Street, Braintree, MA 02184. We serve clients in Quincy, Braintree, Weymouth, Boston, and across Massachusetts — both virtually and by in-person appointment.
Get Started Today

Work With a Federally Licensed
IRS Enrolled Agent Firm.

One Accounting Tax® is the right choice when you want a licensed tax professional — not just a preparer — who can handle complexity, represent you before the IRS, and support you year-round.

29 Commercial Street, Braintree, MA 02184 · Serving Quincy, Braintree & Greater Boston — virtual and in-person available.

Get in Touch with One Accounting Tax®, Inc.

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