Accounting Services for US Accounting Firms

OSBOS  Services, we specialize in providing high-quality outsourcing solutions designed specifically for CPA firms. Many CPAs manage bookkeeping and accounting tasks for small businesses, and our services are crafted to support them in delivering accurate, efficient, and cost-effective solutions.

CPA Small Business Services

We offer a wide range of bookkeeping and accounting services tailored for CPA firms, including:

  • General Ledger Review – Comprehensive summaries of all transactions.

  • Prepare and Post Adjustments – Ensuring accuracy through timely corrections.

  • Resolve Posting Errors – Identifying and fixing discrepancies.

  • Year-End Adjustments – Smooth year-end closing support.

  • Review Sub-Ledger Entries – Maintaining accuracy in detailed accounts.

Tax Return Preparation Services

Outsourcing tax preparation has become a vital strategy for CPA firms aiming to grow their practice and focus on high-value clients. By partnering with us, you can free up valuable time while we manage the tax preparation process for you. Our services include:

  • 1040s – Individual Tax Returns

  • 1120s – Business Tax Returns

  • 1165s – Partnership Tax Returns

Software Expertise

We are experienced in leading tax preparation software, including:

  • UltraTax

  • Drake

  • ProSeries

Why Choose OSBOS ?

Our comprehensive CPA firm services empower CPAs to enhance client satisfaction, streamline operations, and reduce costs — all while ensuring accuracy and compliance. With our support, you can focus on expanding your firm and building stronger client relationships.

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