Top 10 Accounting Outsourcing Companies for CPA Firms in USA (2026)

• Best outsourced accounting services help CPA firms cut costs by up to 50%, increase accuracy, and scale faster with virtual, remote, and cloud-integrated delivery models. 
• Leading vendors offer U.S. GAAP-trained teams, SOC 2-certified platforms, FTE or subscription pricing, and white-labeled CAS solutions. 
• Choosing the right accounting outsourcing company means evaluating security, workflow alignment, review quality, communication, and long-term scalability.

Hiring isn’t keeping up with demand and most CPA firms are already feeling it.

Work is building across bookkeeping, reconciliations, reporting, and close; while experienced talent gets harder and more expensive to hire.

The AICPA continues to report that over 75% of firms are still facing hiring challenges. Firms are left choosing between slowing growth, stretching teams, or increasing costs.

This is where accounting outsourcing services start to play a bigger role, giving CPA firms access to experienced teams without requiring additional internal headcount.

It gives firms access to experienced teams who can handle core finance work without adding headcount. Instead of overloading internal teams, firms can delegate structured work such as bookkeeping, reconciliations, and reporting through third-party accounting services designed to support scalable delivery.

The impact goes beyond cost. Well-structured outsourced accounting solutions can improve turnaround, reduce delivery risk, and provide clearer visibility across client work.

For many firms, outsourcing is becoming an important part of how they scale. However, not all outsourced accounting companies offer the same level of workflow integration, security, quality control, and delivery consistency.

What Are Accounting Outsourcing Services?

Accounting outsourcing services allow CPA firms to delegate bookkeeping, reconciliations, payroll, reporting, accounts payable, accounts receivable, and other finance functions to specialized external teams while retaining oversight, review responsibility, and client ownership.

Here are some of the top outsourced accounting firms that CPA firms in the USA are evaluating for scalable support in 2026.

Why Are CPA Firms Outsourcing Accounting Services in 2026?

CPA firms are outsourcing accounting services in 2026 because talent shortages, rising labor costs, and increasing client expectations are making traditional staffing models harder to sustain. Many firms need additional capacity for bookkeeping, reconciliations, reporting, payroll, and month-end close activities without adding significant overhead.

Outsourcing gives firms access to experienced accounting professionals, scalable delivery models, and operational flexibility. It also helps leadership teams create more time for higher-value services such as advisory, strategic planning, and client relationship management.

What Are the Benefits of Outsourced Accounting Solutions?

Modern outsourced accounting solutions provide benefits that extend well beyond cost savings. Common advantages include:

• Improved capacity without lengthy hiring cycles
• Faster turnaround times and better workflow efficiency
• Reduced pressure during tax season and month-end close
• Access to specialized accounting and bookkeeping talent
• Greater visibility through standardized processes and reporting
• More time for advisory, CAS, and client-facing services
• Flexible support that scales with firm growth and workload demands

How to Choose the Right Accounting Outsourcing Company?

Before selecting an accounting outsourcing company, CPA firms should assess more than pricing. The right partner should align with the firm’s workflows, quality standards, communication expectations, and long-term growth plans.

Provider Selection Checklist

• CPA firm and U.S. GAAP experience
• Security controls and compliance standards
• Workflow and software compatibility
• Quality-control and review proces
• Communication and governance structure
• Scalability and staffing continuity
• Transparent pricing and engagement models
• Proven client references or case studies

List of Top 10 Best Outsourced Accounting Companies in USA

1. QX Accounting Services

Website: https://qxaccounting.com/usa/
QX is purpose-built for U.S. CPA firms. With over 500 firm clients, they offer offshore and onshore accounting teams trained in U.S. GAAP, CPA firm workflows, and audit standards. Services include monthly close, reconciliations, payroll, AP/AR, reporting, and white-labeled CAS delivery.

Their SOC 2 and ISO 27001 compliance ensures bank-grade data security. Clients benefit from overnight delivery models, real-time dashboards, and FTE flexibility, making it a true CAS extension, not just outsourced help.

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2. CapActix Business Solutions

CapActix is one of the established accounting outsourcing firms supporting CPA practices. It provides virtual accounting and CFO-level services to U.S. CPA firms and mid-sized clients. Their offshore teams deliver AP/AR, payroll, bank reconciliations, financial analysis, tax prep support, and controller services.

A strong differentiator is their process automation and software compatibility across QuickBooks, Xero, Sage, and NetSuite. Firms looking for predictable delivery and cost reduction across routine CAS functions find CapActix especially effective.

3. Cherry Bekaert Client Accounting Services

Cherry Bekaert is one of the top 25 U.S. accounting firms offering comprehensive CAS for CPA practices and their clients. Services include outsourced bookkeeping, payroll, budgeting, forecasting, and financial reporting.

What makes them stand out is their deep integration with ERP platforms and finance transformation capabilities. They help CPA firms evolve from transactional accounting to strategic financial advisory models.

4. CohnReznick Client Accounting Advisory Services (CAAS)

CohnReznick operates as a global accounting outsourcing service provider. It offers high-end outsourced accounting, combining G/L management, financial analytics, forecasting, and KPI dashboards. Their focus is on helping CPA firms deliver forward-looking CAS to business clients.

With a strong national footprint, they also offer co-sourced models and help automate multi-entity consolidation and cash flow management. This is ideal for firms expanding into virtual CFO and advisory service lines.

5. AcoBloom International

AcoBloom supports CPA firms with a co-sourcing model, offering dedicated teams of accountants and analysts trained in U.S. GAAP and CPA tax practices.

They handle bookkeeping, AP/AR, tax prep, and payroll support with SLA-based delivery and high retention. AcoBloom is known for delivering audit-ready work, consistent quality, and robust team management structures.

Their services scale well for small-to-mid-sized CPA firms managing growing CAS portfolios.

6. Anchin Client Accounting Advisory Services

Based in New York, Anchin’s CAAS team helps CPA partners serve clients in complex revenue recognition, lease accounting, payroll, financial reporting, and financial planning.

Their model is designed for firms handling multiple industries and needing tailored accounting support, especially for clients undergoing rapid growth, VC rounds, or complex audit prep. Anchin’s team delivers both back-office efficiency and high-touch financial insight.

7. Kept.Pro

Kept is a cloud-based accounting service built for digital-era CPA firms and their SMB clients. They specialize in monthly bookkeeping, cash flow forecasting, payroll processing, and visual financial reporting.

What sets Kept apart is its simplicity, fixed pricing, and client-facing dashboards. They’re ideal for firms managing tech startups, agencies, and online businesses looking for modern, clean reporting and reliable virtual service.

8. MYCPE ONE

MYCPE ONE delivers offshore staffing for U.S. CPA firms, emphasizing long-term, FTE-based partnerships. They specialize in CAS, tax prep, audit support, payroll, and client management tasks

With 7,500+ professionals trained in U.S. standards, MYCPE ONE supports firms of all sizes, offering 1–50 FTEs depending on need.

Their security credentials, training programs, and dedicated support make them a go-to for firms ready to scale without the hiring bottleneck.

9. Accountor Group

Headquartered in Europe, Accountor has expanded into U.S.-compliant accounting, payroll, and HR services with remote delivery.

Their experience in multi-country compliance, payroll regulations, and financial workflows makes them especially appealing to CPA firms with international clients or cross-border business units.

They provide secure platforms, process control, and deep compliance knowledge, making them a unique global CAS partner.

10. CBIZ Outsourced Accounting Services

CBIZ is a large-scale U.S. firm delivering a broad suite of outsourced accounting services. Their CAS delivery includes general ledger, month-end close, payroll, budgeting, forecasting, and interim controllership.

CBIZ’s national presence, tech-backed operations, and advisory integration make it ideal for CPA firms with fast-growing client bases and a need for consistent, strategic back-office support.

FAQs
1. Why Outsourcing Accounting Services Now Makes Strategic Sense 

• Labor Shortages Are Real: With retirements and a declining CPA pipeline, firms need staffing alternatives. Outsourcing fills that gap. 
• Rising Staffing Costs: Remote accounting teams cost 30–50% less than in-house hires with equivalent output. 
• Technology Alignment: Top outsourced firms integrate seamlessly with QuickBooks, Xero, NetSuite, and custom stacks. 
• Advisory Requires Capacity: CAS growth depends on freeing internal teams from transactional tasks. 
• Security is bank-grade: SOC 2, ISO 27001, MFA, encrypted portals—outsourced teams now meet enterprise IT standards. 

2. What are the best outsourced accounting services for CPA firms in 2026?

The top outsourced accounting firms typically combine accounting expertise, secure infrastructure, scalable delivery models, and strong communication processes.The best outsourced accounting services in 2026 offer U.S. GAAP-compliant processes, secure infrastructure, CPA-specific workflows, and remote delivery models.

Top providers include QX Accounting Services, CapActix, CBIZ, CohnReznick, and Anchin, all known for their reliability, security certifications (SOC 2, ISO 27001), and ability to scale Client Accounting Services (CAS) without sacrificing quality.

3. How much do outsourced accounting services cost for CPA firms?

Outsourced accounting costs for CPA firms typically range from $15 to $45 per hour or $2,500 to $6,500 per month per FTE.

Pricing may vary based on task complexity, volume, turnaround time, and whether you’re engaging on a full-time, part-time, or per-transaction basis. Many providers offer bundled CAS packages or custom pricing for tax season support.

4. Is virtual accounting secure for handling sensitive financial data?

Yes, virtual accounting is secure when managed by certified providers. Always choose vendors with SOC 2 Type II or ISO 27001 certifications, encrypted servers, role-based access control, and multi-factor authentication.

Ask for their data handling and breach response policies to ensure client information is fully protected.

5. Can solo and small CPA firms benefit from outsourced accounting firms?

Absolutely. Small and solo CPA firms benefit the most from outsourced accounting services .

It gives them access to skilled professionals without the overhead of hiring.

Outsourcing supports faster turnaround times, accurate monthly closes, and the ability to offer higher-margin CAS and advisory services to clients, even with lean internal teams.

6. What accounting tasks can CPA firms outsource under CAS?

CPA firms can outsource nearly all Client Accounting Services, including:

• Day-to-day bookkeeping
• Payroll processing and tax filings
• Accounts payable and receivable (AP/AR)
• Bank and credit card reconciliations
• Financial reporting and dashboards
• Budgeting and cash flow forecasting
• Year-end close and tax prep support
• Client-facing advisory deliverables

Outsourcing these tasks frees up internal staff for growth and client service.

7. What accounting software do outsourced firms work with?

Leading outsourced accounting firms work with top platforms including QuickBooks Online/Desktop, Xero, NetSuite, Sage Intacct, CCH Axcess, and custom Excel-based workflows.

Before onboarding, confirm that the provider can integrate with your tech stack, reporting preferences, and client portal setup.

8. What are some common traits of the top accounting outsourcing companies in 2026

The top accounting outsourcing companies in 2026 share several key traits: they offer trained ready-to-deploy teams, provide scalable solutions to handle varying workloads, and ensure robust data security. They integrate seamlessly with clients’ existing systems, making the enitre process seamless and efficient.

9. Are Outsourced Accounting Services Secure and Confidential?

Yes. Reputable outsourced accounting services use strong security measures to protect sensitive financial and client data. CPA firms should look for providers that offer role-based access controls, encrypted systems, multi-factor authentication, confidentiality agreements, and documented data protection procedures. Many leading providers also maintain recognized security certifications and compliance frameworks to help ensure client information remains secure and confidential throughout the engagement.

10. How Quickly Can I Start Working with an Outsourced Accounting Company?

The onboarding timeline depends on the scope of work, software access requirements, workflow complexity, and knowledge-transfer needs. In many cases, firms can begin with a small pilot project or defined workload within a few weeks before expanding the engagement. Working with an experienced outsourced accounting company can help streamline onboarding and accelerate implementation while maintaining quality and control.

Why QX Accounting Services 

• QX is the preferred outsourced accounting partner for over 500 U.S. CPA firms. Here’s why: 
• U.S. GAAP-trained teams: Aligned with CPA workflows, audit readiness, and compliance protocols. 
• Daily task delivery: Overnight execution means reports and reconciliations are ready by morning. 
• Bank-grade security: SOC 2, ISO 27001, encrypted transfers, access-controlled environments. 
• Flexible engagement models: From part-time to full-time FTEs or project-based support. 
• Measured results: Firms report 40–60% cost savings and 2x faster turnaround in the first 90 days. 

QX is your full-service delivery partner, focused on consistency, control, and client satisfaction. 

Wrapping Up 

Choosing the right partner from the many accounting outsourcing companies in USA comes down to how well they align with your firm’s growth model, delivery expectations, and client needs.

The best accounting outsourcing service providers don’t just reduce workload; they help firms operate with more control, consistency, and scalability.

Whether you’re a solo practitioner struggling to hire or a regional firm scaling your CAS vertical, the best outsourced accounting services will help you modernize operations without compromising quality. 

Book a Free Consultation 

Ready to reduce costs, increase margins, and focus on client growth? Book a discovery call with QX Accounting Services onboarding team and prototype your outsourced accounting model with measurable ROI and built-in scalability.