Federally Licensed IRS Enrolled Agent (EA) Firm

Tax Preparation & Advisory For Individuals & Small Businesses in Quincy, Braintree & Greater Boston

Federally licensed IRS Enrolled Agent firm. We handle tax returns, bookkeeping, payroll, and planning — for individuals, small businesses, and real estate investors across Greater Boston.

★★★★★ 100+ five-star Google reviews · EA-licensed · Quincy, Braintree & Greater Boston
Yi Chen, EA — Tax Advisor & Partner at One Accounting Tax
Yi Chen, EA Founder & Partner · ~20 years experience Meet Our Team
Why Clients Trust
One Accounting Tax®
EA
IRS Enrolled AgentFederally Licensed Tax Expert in all 50 States
20
Nearly 20 Years ExperienceTax Preparation, Planning & Advisory
QB
QuickBooks ProAdvisorSmall Business Bookkeeping Expert
Licensed Real Estate BrokerReal Estate Tax Expertise — 100+ Transactions Closed
★★★★★ 100+ Five-Star Reviews Avg. 5.0
What Our Clients Say
★★★★★

Yi is by far the best tax accountant I have ever worked with. I will continue to do my taxes with Yi and refer everyone I know.

VC
Vanessa CabeLong-term client · Individual tax
★★★★★

I’ve been working with Yi for over three years. Incredibly knowledgeable and helpful — even with complicated returns. Prompt replies and fast turn-arounds.

AW
Amy Wynn3-year client · Individual tax
★★★★★

Prompt responses, clear answers, and a user-friendly portal for uploading documents. A very smooth process start to finish.

HK
Hopa KnightNew client · Individual tax
★★★★★

We have been working with Yi for over ten years — always on time, with practical, reliable advice that saves us money. Yi is always available and works tirelessly to take care of all our financial needs.

IR
Ilana Rosenberg10-year client · Business advisory
★★★★★

Extremely knowledgeable and professional. He helped me with my business and explained everything clearly.

SL
Simon LamBusiness owner · Quincy
★★★★★

Helped me purchase a property and handle our taxes for years. Exceptionally knowledgeable, especially with real estate taxes.

PL
Ping Tong LiReal estate tax client
★★★★★

Helped me set up an LLC and tax ID. Easy and fast. Great accountant with valuable financial advice.

PG
Patrick GuanNew business owner · LLC setup
★★★★★

Professional, responsive, and efficient. The entire filing process was completed in just one week.

EL
ElaineF-1 visa client · Individual tax
★★★★★

Extremely helpful from the beginning and walked me through the entire process.

RS
Ryan SnowSmall business owner · Guided support
★★★★★

Our family has used Yi for many years. Always reliable and there whenever we need help.

RM
Rafael MejiaLong-term family client
★★★★★

Handles our tax returns, accounting, and payroll. Never had issues. Very happy with the service.

AZ
Alexz Zheng10-year business client · Full service
★★★★★

Super communicative and knowledgeable, especially for small business taxes.

MC
Michaela ChuaSmall business client · Tax guidance
★★★★★

Worked with Yi for years — always helpful and easy to reach.

KD
King DoBusiness owner · Long-term client
★★★★★

We have been working with Yi for over ten years — always on time, with practical, reliable advice that saves us money. Yi is always available and works tirelessly to take care of all our financial needs.

IR
Ilana Rosenberg10-year client · Business advisory
★★★★★

Extremely knowledgeable and professional. He helped me with my business and explained everything clearly.

SL
Simon LamBusiness owner · Quincy
★★★★★

Helped me purchase a property and handle our taxes for years. Exceptionally knowledgeable, especially with real estate taxes.

PL
Ping Tong LiReal estate tax client
★★★★★

Helped me set up an LLC and tax ID. Easy and fast. Great accountant with valuable financial advice.

PG
Patrick GuanNew business owner · LLC setup
★★★★★

Professional, responsive, and efficient. The entire filing process was completed in just one week.

EL
ElaineF-1 visa client · Individual tax
How It Works

Upload. We Prepare. Sign & Done.

Virtual and in-person meetings available — by appointment only.

29 Commercial Street, Braintree, MA 02184

1

Upload Your Documents

Complete our intake form and securely upload your tax documents. Most clients finish in under 10 minutes — W-2, self-employed, or business.

2

We Prepare Your Return

A licensed EA reviews your full picture — deductions, income, business activity — and prepares your return accurately and completely.

3

Review, Sign & File

We send your return to your Client Hub for review and e-signature, then file securely with the IRS. Questions welcome at every step.

Built for Small Business Owners

Running a Business? We Handle the Books, Payroll & Taxes.

Most of our longest-standing clients are small business owners — restaurants, grocery stores, construction, real estate, e-commerce, and professional services. One firm for bookkeeping, payroll, and tax means no hand-offs, no finger-pointing, and no surprises at year-end.

BK
Monthly Bookkeeping QuickBooks Online setup, monthly reconciliation, financial reports
PR
Payroll from $150/mo Weekly or bi-weekly payroll, direct deposit, filings, W-2s & 1099s
TX
Business Returns from $600 LLC, S-Corp, partnership, sole prop — federal, state & multi-state
PL
Year-Round Tax Planning Entity structure, quarterly estimates, S-Corp elections, owner comp
Our Services

Tax & Accounting Services for Greater Boston

From individual returns to full-service business accounting — year-round support for every situation.

Tax documents and forms for individual tax preparation by One Accounting Tax in Quincy and Braintree MA

Individual Tax Preparation

For employees, self-employed, freelancers, and individuals with investments, side income, rental activity, or multi-state returns.

  • W-2 with added complexity
  • Self-employed & 1099 income
  • Multi-state returns
  • Investment & stock reporting
Business owner reviewing financial reports and payroll statements on laptop

Business Accounting & Tax

Full-service support for small business owners — accurate returns, organized books, payroll, and practical guidance all year.

  • Business returns (LLC, S-Corp, sole prop)
  • Bookkeeping & financial records
  • Payroll processing & compliance
  • Tax planning & estimated payments
Residential rental property keys and investment documents on desk

Real Estate Tax & Accounting

For landlords, rental property owners, and investors who need accurate reporting and a professional who understands property income.

  • Rental income & expense reporting
  • Depreciation & property strategy
  • Home sales & 1031 exchanges
  • Real estate investor returns
Calculator on tax documents for tax planning and IRS representation services

Tax Planning & IRS Matters

Proactive planning to reduce what you owe, and professional EA representation when the IRS gets involved.

  • Year-round tax planning
  • Quarterly estimated guidance
  • IRS notices & correspondence
  • Prior-year returns & amendments
Common Questions

Frequently Asked Questions

Quick answers to the questions we hear most from new clients.

Are you accepting new clients?
Yes — we are accepting new individual, self-employed, and business clients. Get started by uploading your documents or calling/texting (617) 829-0928.
How much does tax preparation cost?
Individual returns start at $200 and business returns start at $600. Final fees depend on complexity. We review your documents first and confirm pricing before we begin — no surprises. See our pricing page for full details.
What is an IRS Enrolled Agent (EA)?
An IRS Enrolled Agent is a federally licensed tax professional — the highest credential the IRS grants. EAs can represent taxpayers before the IRS for audits, collections, and appeals in all 50 states. Yi Chen is a licensed EA and the founder of One Accounting Tax®.
Can I do everything online?
Yes. Most clients complete the entire process online — uploading documents securely and communicating by phone or email. In-person appointments are available in Braintree by request.
Do you help with rental properties and real estate taxes?
Yes. Yi Chen is a licensed real estate broker who has personally closed over 100 transactions — so we understand both the tax and investment sides of property ownership. We handle Schedule E, depreciation, home sales, and 1031 exchanges.
Do you offer bookkeeping and payroll?
Yes. Monthly payroll services start at $150. We support bookkeeping and payroll for small businesses across Quincy, Braintree, and Greater Boston year-round.
Do you help with IRS notices and back taxes?
Yes. Upload your notice and we’ll review it, explain what it means in plain terms, and help you respond. As a federally licensed EA firm, we can represent you directly before the IRS. We also help clients get caught up on prior-year returns.
What is the best tax accountant near Braintree MA?
One Accounting Tax® is a federally licensed IRS Enrolled Agent firm located at 29 Commercial Street, Braintree, MA. With 100+ five-star Google reviews, nearly 20 years of experience, and full-service tax preparation, bookkeeping, and payroll, we are one of the most trusted tax firms serving Braintree and the South Shore.
Do you offer tax preparation for self-employed and freelancers?
Yes. We prepare Schedule C returns for freelancers, independent contractors, gig workers, and sole proprietors. We handle self-employment tax, quarterly estimated payments, home office deductions, vehicle mileage, and all business expense categories. Self-employed returns start at $300.
Can you prepare taxes for nonresident aliens and international students?
Yes. We prepare Form 1040NR for nonresident aliens, F-1 and J-1 visa holders, international students, H-1B professionals, and foreign nationals with U.S.-source income. We also handle tax treaty benefits and Form 8843. Nonresident returns start at $400.
What is One Accounting Tax® and where are they located?
One Accounting Tax® is an IRS Enrolled Agent (EA) firm founded in 2017, located at 29 Commercial Street, Braintree, MA 02184. The firm is led by Yi Chen, EA — a federally licensed tax professional and licensed real estate broker with nearly 20 years of experience. The firm serves individuals, small businesses, and real estate investors across Braintree, Quincy, and Greater Boston. Phone: (617) 829-0928.
Get Started Today

More than a tax preparer.
More personal than a large firm.

One Accounting Tax® is the right choice when your tax situation has grown beyond what software can handle — and you want a licensed professional who actually knows your name.

Serving Braintree, Quincy, Weymouth, Boston & across Massachusetts — virtual and in-person available.

Get in Touch with One Accounting Tax®, Inc.

You can count on us for professional, timely and reliable tax and accounting services. If you’re ready to get started, just fill out this form and we’ll be in touch.

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