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← All articles June 15, 2026

Outsourced Accounting & Tax Preparation Services for US CPA Firms

MS Accounting & Advisory, provides outsourced accounting, bookkeeping, payroll, financial reporting, and tax preparation services exclusively for US CPA firms, helping them improve efficiency and reduce operational costs. We prepare tax returns, including Forms 1040, 1040-NR, 1065, 1120, 1120-S, 990, and 1041, delivering accurate, confidential, and scalable support that enables CPA firms to focus on growing their practice.

Outsourced Accounting & Tax Preparation Services for US CPA Firms

In today's competitive accounting industry, US CPA firms are constantly seeking reliable ways to improve efficiency, reduce operational costs, and meet demanding tax deadlines. Outsourcing accounting and tax preparation enables firms to focus on client relationships, advisory services, and business growth while experienced professionals handle the day-to-day accounting workload.

At MS Accounting & Advisory, we provide professional outsourced accounting and tax preparation services exclusively for CPA firms across the United States. Our experienced accounting professionals work as an extension of your team, delivering accurate, confidential, and timely financial support that meets your firm's quality standards.

Our Services for US CPA Firms

Outsourced Accounting & Bookkeeping

We provide comprehensive bookkeeping and accounting services to help CPA firms manage their clients' financial records efficiently.

  • Bookkeeping Services
  • Bank & Credit Card Reconciliations
  • Accounts Payable & Accounts Receivable
  • General Ledger Maintenance
  • Journal Entries
  • Month-End & Year-End Closing
  • Financial Statement Preparation

Tax Preparation Support

We prepare tax returns on behalf of CPA firms, ensuring every return is accurate, organised, and ready for review by your licensed CPA.

  • Form 1040 – Individual Income Tax Returns
  • Form 1040-NR – Non-Resident Income Tax Returns
  • Form 1065 – Partnership Tax Returns
  • Form 1120 – C Corporation Tax Returns
  • Form 1120-S – S Corporation Tax Returns
  • Form 990 – Non-Profit Organisation Returns
  • Form 1041 – Trust & Estate Income Tax Returns
  • Tax Workpapers & Supporting Schedules
  • Tax-Ready Financial Statements

Payroll & Financial Reporting

Our payroll and reporting services help CPA firms provide reliable financial information to their clients.

  • Payroll Processing Support
  • Payroll Reconciliations
  • Management Reports
  • Financial Reporting
  • Month-End Reporting Packages

CPA Back Office Support

Extend your firm's capacity with dependable offshore accounting professionals.

  • Accounts Payable & Receivable Support
  • Account Reconciliations
  • Financial Analysis
  • Management Accounting
  • Administrative Accounting Support

Why Choose MS Accounting & Advisory?

  • Dedicated Offshore Accounting Team
  • ACCA Qualified Professionals
  • Experience Supporting International Accounting Firms
  • Secure & Confidential Data Handling
  • Cost-Effective Accounting Solutions
  • Scalable Support During Busy Tax Seasons
  • Fast Turnaround Times
  • High Accuracy & Quality Assurance

Partner with MS Accounting & Advisory

Whether your CPA firm requires year-round accounting support or additional resources during tax season, MS Accounting & Advisory is your trusted outsourcing partner. We deliver professional bookkeeping, accounting, payroll, financial reporting, and tax preparation services that help CPA firms increase efficiency, reduce costs, and focus on growing their practice.

Contact MS Accounting & Advisory today to discover how our outsourced accounting and tax preparation services can support your CPA firm's success.