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We help small business owners, real estate investors, and individuals handle their taxes accurately and efficiently — without unnecessary stress.
Founded in 2017, One Accounting Tax® is a trusted tax preparation and accounting firm serving Quincy, Braintree, and Greater Boston. We specialize in tax preparation, tax planning, bookkeeping, payroll, and IRS resolution for small business owners, real estate investors, and individuals.
As an IRS Enrolled Agent (EA) firm, we are federally licensed to prepare taxes and represent taxpayers in all 50 states. Led by Yi Chen, EA, with nearly 20 years of tax and finance experience, our firm is known for clear communication, year-round support, rental property tax expertise, and 100+ 5-star Google reviews.
Yi began his tax and accounting career in 2007 at a Boston-area CPA firm and later helped manage firm operations and staff. With nearly 20 years of experience, he works with individuals and small business owners to deliver accurate tax filings and practical, year-round advisory support.
His background also includes experience at a major investment firm and a top global consulting firm, supporting most complex global tax matters. Yi combines corporate-level tax exposure with hands-on small business experience, plus deep real estate knowledge—having closed 100+ properties. This gives him a unique, real-world perspective on taxes for homeowners, landlords, and real estate investors.
Credentials: Enrolled Agent (EA) • IRS Authorized e-file Provider • Bachelor’s Degree in Accounting • QuickBooks Online Certified ProAdvisor • Associate Broker/Realtor
Enrolled Agents are federally licensed and authorized to represent taxpayers before the IRS in all 50 states. Enrolled agent status is the highest credential the IRS awards. Like CPAs and attorneys, Enrolled Agents have unlimited rights to represent taxpayers before the IRS. Click here to see IRS definition of Enrolled Agent.
Yinnie brings nearly 20 years of accounting experience across public accounting and healthcare finance. She previously worked as an auditor at Grant Thornton LLP, developing deep expertise in financial reporting, compliance, and documentation standards.
She has also served as a Financial Analyst and Senior Accountant for major hospitals, building a strong foundation in financial operations and controls. As an IRS Enrolled Agent (EA), Yinnie is authorized to represent taxpayers before the IRS and supports clients with tax, payroll, and compliance matters.
Credentials: Enrolled Agent (EA) • Bachelor’s Degree in Accounting
Tricia Fu is a dedicated accountant at One Accounting Tax®, with a strong background in healthcare finance. She previously worked with Brigham and Women’s Hospital, Massachusetts General Hospital, and Harvard Medical School, where she supported complex financial operations.
In her roles as a Senior Grants Manager, Tricia managed grant budgets, financial reporting, and payroll-related coordination. She brings a detail-focused approach and a high standard of documentation to support clients and the team year-round.
Credentials: Master’s Degree in Communication/Marketing
Crystal C. provides bookkeeping and administrative support at One Accounting Tax®. With a bachelor’s degree in accounting and experience in QuickBooks, she assists with financial data organization, document management, and internal workflow coordination. Her attention to detail and reliability help ensure our operations run efficiently and our client service remains organized and responsive.
We provide practical, high-quality tax and accounting services for individuals and businesses in Quincy, Braintree, and Greater Boston.
• Individual tax preparation (Form 1040)
• Small business tax returns (Schedule C, S-Corp, partnerships)
• Tax strategy and year-round tax planning
• Rental property and real estate tax strategies
• Bookkeeping and payroll support
• IRS notices, back taxes, and tax resolution
Our focus is simple — accurate filings, proactive planning, and helping clients reduce taxes while staying compliant.
We work with clients who value experienced, responsive service, including:
• Small business owners and entrepreneurs
• Real estate investors and rental property owners
• Individuals with W-2, 1099, and investment income
• High-income earners and professionals
• Clients catching up on prior-year tax filings
• Taxpayers needing IRS representation
Our firm is built around personalized service, clear communication, and long-term relationships with our clients.
• Enrolled Agent (EA) status with IRS representation authority • Nearly 20 years of tax experience (partner also with 10+ years) • Strong specialization in family-owned businesses • Efficient, no-nonsense process • Secure online document submission • Established presence in the Quincy and Braintree communities Clients continue to choose Yi and his team even at a premium price point because they value experience, responsiveness, and results. For individuals and small businesses seeking reliable tax preparation or back tax assistance in the South Shore Massachusetts area, One Accounting Tax®, Inc. provides steady guidance and practical solutions.