The Top 10 CPA Outsourcing Companies for Accounting Firms in the US 2026 is here.

Some of the top CPA outsourcing firms for US accounting firms are Corient Business Solutions, 1840 & Company, Acculink CPA, CapActix, Cherry Bekaert, Datamatics, Global FPO, Infinity Globus, NumeraWise Solutions, and QX Accounting Services. They offer different tax, bookkeeping, and audit support, so it’s important to choose the one that will work best for your workload and software.

Before choosing a partner, it helps to understand why more US firms are turning to outsourcing and offshore accounting: a shortage of talent. NASBA data shows the number of unique CPA exam candidates fell from 102,323 in 2016 to 85,855 in 2018, and by 2022 it had dropped to about 67,000. Meanwhile, competition and hiring costs are rising: Robert Half’s 2026 Salary Guide projects that average starting salaries for tax, audit and assurance roles will increase 3.7% year over year.

Firms are responding. The 2025 Rosenberg MAP Survey reports that 31% of firms with $5–10 million in revenue are offshoring talent, up from 21.7% a year earlier. “57% of CPA firms” use outsourcing, offshoring or both, and “over 75%” plan to keep or increase it, without naming a survey edition. I couldn’t verify those figures. Large firms are investing in this area too: in January 2026, Cherry Bekaert acquired Tarsus to expand its outsourced accounting and CFO advisory services.

How to choose a CPA outsourcing partner

Before comparing providers, consider each of the following factors:

Understand your review process, not just general bookkeeping, but the team should understand US GAAP and CPA-specific workflows as well.

• Review-process fit: The team should understand not just general bookkeeping but also US GAAP and CPA-specific workflows, such as workpapers and review notes.
• Software compatibility: ensure experience using QuickBooks, Xero, NetSuite, Sage Intacct, and CCH Axcess.
• Data security: ask about access controls, confidentiality agreements, audit trails, and independent certifications such as SOC 2 Type II. Also ask how the provider supports Section 7216 taxpayer-consent requirements when return information is disclosed to a team outside the United States.
• Client relationships and accountability review: A good CPA outsourcing partner operates under your brand and maintains client relationships.
• Pricing model: Per-return pricing tends to suit firms that are trying outsourcing for the first time or have irregular volume. Ask each provider which pricing models it offers.

The top 10 CPA outsourcing companies compared

The table provides a summary of what each provider is publicizing about their service. The order should not be interpreted as a ranking.

Company	Known for	Best suited to
Corient Business Solutions	Outsourced finance, accounting and CPA services, plus back-office, IT and AI support	US CPA firms and mid-market businesses seeking cost savings across finance and back-office work
1840 & Company	Integration with accounting systems and data security protocols	Firms with established software stacks
Acculink CPA	States that it places pre-vetted, US-trained professionals in 5-7 days	Short-staffed firms needing fast capacity
CapActix	India-based (Ahmedabad) support for CPA firms and small to medium-sized enterprises	Practices with mixed CPA and SME client bases
Cherry Bekaert	Top-20 US accounting and advisory firm with an outsourced accounting practice; outsourcing combined with advisory	Firms wanting an advisory-led relationship [Note: Cherry Bekaert is itself a CPA firm, so consider whether it belongs in a list of outsourcing providers for other CPA firms.]
Datamatics	Tax preparation across 1040, 1120-S, 1065, 1120 and 990 returns, plus bookkeeping, payroll and audit support	Firms outsourcing compliance-heavy tax work
Global FPO	Process control and scalable support for CPA firms	Firms with defined processes that want faster execution
Infinity Globus	Positions itself as a provider for growing CPA firms	Expanding practices needing flexible support
NumeraWise Solutions	Bookkeeping, tax return preparation and financial reporting for US CPA firms	Small practices trying outsourcing for the first time
QX Accounting Services	Reports serving over 500 US CPA firms with offshore teams trained in CPA workflows	Firms wanting dedicated staff who act as an extension of the practice

Why offshore accounting is beneficial for CPA firms.

Offshore accounting is best made to work when the production work goes offshore and the judgement remains onshore. Compliance Production is conducted by offshore teams and base revenue is generated from these teams, but US teams continue to perform review, advisory and client services. Typical tasks include:

• Tax return preparation in advance of tax season.
• Monthly bookkeeping and reconciliations.
• Payroll processing
• The management of accounts payable and receivable.
• Audit Support (including tick and tie work)

This leads to increased revenue per US team member without any permanent staffing changes, and a more stable busy season.

Start with a small pilot

Whichever providers you shortlist, start with one service line, such as a batch of 1040s or month-end reconciliations. Before scaling up, measure three things:

• Turnaround time against your internal deadline
• First-pass error rate
• Review effort required from your senior staff

If the numbers hold over a full cycle, expand to more service lines.

Conclusion

The talent shortage is likely to persist and , which is why outsourcing is a practical way for accounting firms to add capacity as workloads grow. The right provider can handle routine accounting, absorb peaks in workload, and free CPAs to focus on advisory services and client relationships.

CorientBS offers accounting firms flexible CPA outsourcing solutions to augment their staffing, taking on repetitive accounting duties while the firm keeps client-facing work and final review. With proper procedures and management, outsourcing can be a reliable part of a firm’s capacity plan rather than a short-term fix.