Small Business Accounting & Tax in Braintree, MA (Serving Quincy, Greater Boston) | One Accounting Tax®

Running a business is hard enough—your accounting and taxes shouldn’t feel unclear. One Accounting Tax® (est. 2017) provides small business accounting and tax support for owners who want accurate reporting, clean books, and a reliable year-round process. We’re headquartered in Braintree, MA and proudly serve Quincy and Greater Boston.

We work with service businesses, local operators, and real estate-related businesses that need a practical approach: organized documentation, consistent monthly workflows, and tax filing that matches the reality of how your business operates.

Why small business owners work with One Accounting Tax®

  • IRS Enrolled Agent (EA) firm with year-round support

  • 100+ 5-star Google reviews

  • Nearly 20 years of experience in taxation & finance

  • Real-world business + real estate perspective: Yi Chen has closed 100+ real estate transactions and understands how business activity and transactions flow into tax reporting (case-dependent)


Small Business Services We Offer

C-Corp, S-Corp & LLC Tax Preparation

We prepare business tax returns for common entity types and help owners stay organized throughout the year. Services may include (case-dependent):

  • C-Corp, S-Corp, and partnership/LLC filings (based on your entity)

  • K-1 and owner reporting coordination (as applicable)

  • Year-end reconciliation support to align bookkeeping with tax filing

Business Setup & Formation Support (Case-Dependent)

Starting a new business involves more than picking a name. We can help you think through the accounting and tax side of setup, including:

  • Entity selection considerations (LLC vs S-Corp vs C-Corp — case-dependent)

  • Setup planning for bookkeeping workflows and tax deadlines

  • Guidance on what to track from day one (income/expenses, mileage, receipts, contractor payments)

Note: Legal formation/filings may involve your attorney or state filing services. We can coordinate from the tax/accounting side.

Bookkeeping Support (QuickBooks-Ready)

Clean books make tax season easier and help you make better business decisions. Bookkeeping support may include:

  • Monthly categorization and reconciliation (bank/credit card)

  • Cleanup work if books are behind (catch-up bookkeeping)

  • Simple monthly reporting to keep things organized

  • Guidance on documentation best practices (receipts, vendor summaries, statements)

Payroll & Compliance Support (As Needed)

Payroll mistakes can cause expensive headaches. We support small businesses with payroll and compliance items such as:

  • Payroll setup support and ongoing processing (as applicable)

  • Payroll tax filing coordination (case-dependent)

  • Year-end payroll forms (W-2/W-3) guidance

Tax Planning & Filing (Year-Round)

We work with owners who want to plan ahead—not just file at the deadline. Year-round support may include:

  • Estimated tax planning (as needed)

  • Owner compensation planning topics (case-dependent)

  • Common deduction documentation and tracking support

  • Planning around large purchases, vehicles, and business changes (case-dependent)

1099 Preparation

If you pay contractors, 1099s are often required. We can help with:

  • Determining what contractor payments may require a 1099 (case-dependent)

  • Year-end 1099 preparation and filing support

  • W-9 collection guidance and recordkeeping best practices


Who This Is For

This page is a good fit if you are:

  • A small business owner who needs an accountant in Braintree (serving Quincy)

  • An owner with S-Corp, LLC, or C-Corp tax filing needs

  • A business that wants bookkeeping + tax aligned so numbers don’t conflict

  • An owner who wants a consistent, year-round process with clear expectations


About One Accounting Tax®

One Accounting Tax® is headquartered at 29 Commercial St, Braintree, MA 02184. Since 2017, we’ve helped individuals and business owners across Quincy, Braintree, and Greater Boston with accounting, tax preparation, and year-round support.

Our approach is documentation-first and practical: we help you get organized, keep records clean, and file accurately—without confusing jargon or unrealistic promises.


Get Started

Contact us for a free consultation today!
Call/text: 617-829-0928
Email: service@oneaccountingtax.com

Tax & Accounting Services • Serving Quincy, Braintree & Greater Boston

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