When a partner is preparing a Form 1040 in early April instead of reviewing it, the problem is not commitment. It is capacity.
Tax preparation outsourcing gives CPA firms additional preparation capacity without requiring them to recruit, train, and retain enough local staff for peak-season volume. Depending on the provider, firms can use a dedicated offshore team, pay per return, access a domestic professional network, or combine preparation support with automation.
SafeBooks Global appears in this comparison, and this article is published on the SafeBooks website. We have disclosed that relationship and used the same evaluation factors for every provider.
Which Tax Preparation Outsourcing Companies Should CPA Firms Consider in 2026?
The leading tax preparation outsourcing companies for CPA firms include SafeBooks Global, QX Accounting Services, TOA Global, MYCPE ONE, Datamatics Business Solutions, Thomson Reuters Outsource, Taxfyle, Infinity Globus, Unison Globus, and Meru Accounting.
The right provider depends on the firm’s return volume, preferred engagement model, tax software, security requirements, and Section 7216 procedures.
How Were These Tax Preparation Companies Selected?
This comparison focuses on companies with publicly available information showing tax preparation services for US CPA and accounting firms.
The evaluation considered:
- US tax preparation experience
- Supported return types
- Engagement model
- Tax software compatibility
- Seasonal scalability
- Available security information
- Offshore disclosure and consent processes
Editorial Note: Company information is based on publicly available sources and may change.
What Should a CPA Firm Look for in a Tax Preparation Partner?
Start with four questions:
- Is US tax preparation a core service?
- Does the engagement model match your return volume?
- Can the team work in your current tax software?
- Can the provider document its security and Section 7216 processes?
Relevant experience may include Forms 1040, 1041, 1065, 1120, 1120-S, and 990, plus multi-state returns and supporting workpapers. Software experience may include UltraTax CS, Lacerte, CCH Axcess Tax, ProSystem fx, Drake, and GoSystem Tax RS.
Security claims should be supported by current documentation. Ask about encrypted data transfers, access controls, managed devices, background checks, incident-response procedures, data-retention policies, and the scope of any SOC 2 or ISO 27001 certification.
The SafeBooks guide to secure remote tax preparation access explains how firms can provide controlled access without allowing taxpayer data to be stored on unmanaged devices.
Per-Return or Dedicated Team: Which Model Fits Your Firm?
Model | Best fit | Main advantage | Main consideration |
Per-return | Seasonal or unpredictable volume | Pay for completed returns | Preparers may vary |
Dedicated team | Recurring or year-round work | Staff continuity and client knowledge | Capacity should be planned |
Domestic network | Firms requiring US-based professionals | Domestic preparation support | Different cost structure |
Automation-supported | High-volume standardized returns | Reduces document-processing work | Still requires professional review |
A per-return model can work well when volume changes significantly each season. A dedicated team is generally better when the firm wants the same preparers to learn its clients, procedures, naming conventions, and review standards.
Firms comparing these structures can review the SafeBooks guide to offshore staffing models for accounting firms.
Expert Insight
“The right tax preparation provider should reduce reviewer workload, not move the bottleneck. Before committing, give the proposed team several representative returns and evaluate accuracy, documentation, open-item tracking, and review notes.”
CA Bindesh Jain
Tax Director, SafeBooks Global
Which Are the 10 Best Tax Preparation Outsourcing Companies for CPA Firms?
Company | Model | Best for |
SafeBooks Global | Dedicated and white-label | Consistent, scalable tax capacity |
QX Accounting Services | FTE and per-return | Scale and model flexibility |
TOA Global | Dedicated staffing | Building a standing tax team |
MYCPE ONE | Staffing and outsourcing | CPA-firm-focused support |
Datamatics Business Solutions | Managed outsourcing | Broader tax-production requirements |
Thomson Reuters Outsource | Automation and preparation | Software-integrated capacity |
Taxfyle | US professional network | Domestic outsourced preparation |
Infinity Globus | Offshore extended team | US-facing offshore delivery |
Unison Globus | Offshore outsourcing | Combined tax and accounting support |
Meru Accounting | Flexible remote support | Smaller accounting practices |
1. SafeBooks Global
SafeBooks provides remote tax preparation support for CPA and accounting firms, covering Forms 1040, 1065, 1120, 1120-S, multi-state returns, workpapers, review support, and e-filing coordination.
Its India-based tax professionals work within the firm’s software, procedures, review standards, and brand. The dedicated-team model gives firms consistent preparers who learn their clients and can support seasonal or ongoing tax workloads.
2. QX Accounting Services
QX provides outsourced tax preparation for US accounting firms through dedicated and per-return options. Its service model can fit firms that need to increase preparation volume quickly or combine seasonal support with a longer-term team.
3. TOA Global
TOA Global focuses on dedicated accounting talent for accounting firms. Its staffing model suits practices that want to build an offshore tax department and manage the assigned professionals as part of their internal team.
4. MYCPE ONE
MYCPE ONE serves CPA and accounting firms through staffing, outsourcing, continuing education, and practice-support services. It is relevant to firms looking for a provider focused specifically on the accounting profession.
5. Datamatics Business Solutions
Datamatics offers tax and finance outsourcing for firms requiring structured production capacity. Its broader delivery model can suit mid-sized firms with multiple return types and higher seasonal volume.
6. Thomson Reuters Outsource
Thomson Reuters Outsource provides year-round preparation support for individual and business returns. The service integrates with platforms such as UltraTax CS, CCH Axcess Tax, Lacerte, and GoSystem Tax RS.
Its combination of preparation support and tax workflow technology is suited to firms already using major professional tax platforms.
7. Taxfyle
Taxfyle connects accounting firms with a US-based network of CPAs and enrolled agents through a managed platform. It can help firms add domestic preparation capacity while tracking engagements through a centralized workspace.
8. Infinity Globus
Infinity Globus provides offshore tax preparation and accounting support through extended teams. It serves firms seeking offshore capacity with a US-facing service structure and support across multiple accounting functions.
9. Unison Globus
Unison Globus provides India-based tax preparation support for US CPA firms. Its services cover individual and business return workflows and can be combined with other outsourced accounting functions.
10. Meru Accounting
Meru Accounting offers remote tax preparation for individuals, businesses, and accounting practices across several markets. Its flexible support model can suit solo practitioners and smaller firms seeking additional preparation capacity.
Does Outsourcing Tax Preparation Offshore Comply With IRS Rules?
Yes, when the disclosure and consent requirements are handled correctly.
For Form 1040 series information sent to a tax return preparer outside the United States, CPA firms should obtain separate, affirmative, signed, and dated consent before the offshore team receives access. A broad third-party clause in an engagement letter may not satisfy the applicable requirements.
The consent should accurately identify the recipient, purpose, information being disclosed, and required warnings. The CPA firm should retain evidence of consent and continue controlling final review, approval, and filing.
Use this IRS Section 7216 checklist for offshore tax preparation when designing the process. Firms should also obtain legal or compliance advice for their specific circumstances.
Is Tax Preparation Outsourcing Cheaper Than Seasonal Hiring?
It often can be, but firms should compare total costs rather than looking only at salary or provider fees.
A seasonal hire creates recruiting, payroll, software, training, equipment, and management costs. A new preparer also consumes senior review time before becoming productive. Per-return tax outsourcing makes part of the cost variable, while a dedicated offshore team provides capacity without requiring a permanent US hire.
The lowest rate is not automatically the best value. Measure preparation accuracy, review-note volume, turnaround, documentation quality, and the internal time required to manage each return.
Choose the Right Tax Preparation Model Before Comparing Rates
The best provider is the one whose model matches your volume, whose preparers understand your software, and whose security and Section 7216 procedures can be verified before taxpayer information is shared.
Begin with a controlled pilot using several representative returns. Compare open-item handling, documentation, turnaround, and reviewer time.
If SafeBooks fits your shortlist, contact our tax support team to discuss your return mix, meet the proposed professionals, and review the operating controls before committing.
