For many CFOs and private equity sponsors, the first audit of a newly formed group is an important test of the finance function. Unlike steady-state groups, carve-outs and greenfield holding structures may face compressed timelines, incomplete data histories, and shifting systems landscapes.
Selecting the right audit firm is therefore an important governance and reporting decision. The audit firm should bring assurance, technical clarity, project discipline and sector understanding. A poor fit may result in overruns, strained management bandwidth, and friction with banks and regulators.
This article puts audit firms into four categories, and each category has different strengths, limitations, and suitability:
1. The Big Four (EY, PwC, Deloitte, KPMG)
2. Mid-Tier International Networks (e.g., BDO, RSM, Grant Thornton, Mazars, Crowe)
3. Mid-Size Local Firms in Germany and Switzerland
4. Small Boutique Firms (often set up by former Big Four or mid-tier managers and partners)
Evaluation
of Audit Firms
1. Multi-GAAP
Newly formed groups often sit at the intersection of various GAAPs with various local frameworks not fully aligned to the group GAAP. Alignment of these frameworks is often necessary to avoid reconciling the same transactions multiple times.
Big Four and Mid-Tier: Robust technical capacity across all GAAPs; experienced in coordinating reporting across multiple GAAP frameworks.
Mid-Size Local: Strong domestic GAAP and statutory reporting expertise; may have limited depth in complex international consolidation structures but might be more pragmatic.
Boutiques: Typically, niche-focused and highly partner-led, often with strong specialization in a specific GAAP but might be more pragmatic.
Key question to ask: “Show us a recent audit where IFRS, HGB, and Swiss GAAP FER had to be aligned in one group report. What challenges arose, and how did you solve them?”
2. Component Auditor Management
The group auditor must coordinate component auditors effectively: aligning materiality, issuing instructions, and reviewing workpapers. Clear coordination and communication processes are important.
Big Four: Mature global protocols, electronic platforms, and established reporting lines.
Mid-Tier: Solid coordination, but quality depends on affiliate strength in each country.
Mid-Size Local: Limited international coordination infrastructure; often reliant on local alliances for foreign coverage.
Boutiques: Flexible and partner-driven coordination approach, but usually with limited international network depth.
Key question to ask: “What is your playbook for instructing component auditors and consolidating their findings into a single group opinion?”
3. IT Audit & Data Migration Competence
ERP carve-outs, new consolidation tools, and data migrations are the rule, not the exception. Limited IT audit involvement may increase challenges in validating migrated data and system-generated reporting.
Big Four: Dedicated IT audit departments with multi-IT-landscape expertise. Will challenge inconsistent data across your business processes which may help for further improvement.
Mid-Tier: Usually, sufficient expertise for mainstream ERPs, but specialist availability should be assessed during peak reporting periods.
Mid-Size Local: Often rely on external IT specialists; coordination quality depends on local partner network. More programmatic, but can also mean that heterogeneous IT landscape and inconsistent data points get less challenged and hence improved.
Boutiques: Lean and pragmatic approach, typically using external niche IT or ERP specialists when required. Similar to Mid-Size Local.
Key question to ask: “How will you gain assurance over data migrated from the seller’s ERP into the new group environment?” Do you have specialist in …?
4. Valuation, Tax, and Technical Specialists
Day-1 Purchase Price Allocation (PPA), impairment testing, lease accounting, and supplier bonuses are areas involving significant accounting judgement and technical analysis. Audit firms need rapid access to specialists.
Big Four: In-house valuation, tax, and technical desks; credibility with regulators.
Mid-Tier: Good coverage but stretched in peak periods.
Mid-Size Local: Strong domestic tax knowledge; valuation often subcontracted.
Boutiques: Highly responsive and technically focused, but dependent on external specialist networks for broader transaction support.
Key question to ask: “How quickly can you commit to issuing a consultation memo on goodwill impairment or treatment on certain valuation topics?”
5. Pre-Clearance Culture
Late-stage technical disagreements can create delays during the audit process. Firms that issue (informal) early on technical accounting topics help reduce uncertainty during the audit.
Big Four: Formalized, but can be bureaucratic.
Mid-Tier: Faster and more pragmatic.
Mid-Size Local: Partner accessible, but pre-clearance depends on specialist availability.
Boutiques: Highly interactive and pragmatic, with direct senior-level involvement in technical discussions.
Key question to ask: “Can we agree on clearance to certain technical accounting topics that are would significantly impact our reporting and possibly delay the audit (e.g., purchase-price allocation, valuation, impairment topics, etc.)
6. Partner Attention & Timeline Discipline
The first audit cycle may involve compressed reporting timeline (120–150 days). Partner involvement and a realistic plan are essential.
Big Four: Large teams, broad specialist coverage, but senior level involvement may vary.
Mid-Tier: High partner involvement and continuity.
Mid-Size Local: Strong domestic attention; thin coverage across larger groups.
Boutiques: Typically partner-led, with direct senior involvement.
Key question to ask: “What does the engagement team structure look like, how much senior involvement is planned, and how do you ensure continuity across reporting cycles?”
7. Independence & Conflicts
Sellers and previous shareholders often maintained long-standing relationships with auditors and in some cases extending to personal ties which may pose real and perceived conflicts of interest.
Big Four: May have existing relationships arising from prior advisory or transaction engagements (e.g., due diligence or advisory roles for the seller); but typically supported by formal independence procedures.
Mid-Tier: Typically cleaner from an independence perspective, with fewer sell-side ties.
Mid-Size Local: Sometimes risk of personal connections, especially in family-owned businesses.
Boutiques: May have fewer historical relationships with sellers or shareholders, though formal conflict-check frameworks may be less robust.
Key question to ask: “Please confirm that there are no current or past service relationships with the seller or its shareholders that could impair independence.”
8. Commercial Transparency
Audit overruns are common if scope is poorly defined. Transparent pricing and change-control support clearer engagement management.
Big Four: Typically, higher fee structure; change orders frequent.
Mid-Tier: More transparent and competitive; still monitor specialist fee add-ons.
Mid-Size Local: Usually more predictable, domestic-oriented pricing.
Boutiques: Flat or milestone-based, often able to offer simpler fee structures.
Key question to ask: “Provide a fee bridge including assumptions and explicit out-of-scope triggers.”
PE
Lifecycle
During the early nucleus phase, many PE-backed businesses initially retain their existing local auditor. At this stage, continuity, speed, and operational flexibility may be more important than working with a well-known audit firm. As the group grows internationally, approaches the end of the holding cycle, or lender expectations change, it may require:
stronger consolidation expertise,
international coordination capabilities,
IFRS and acquisition accounting experience,
tighter reporting timelines, and
broader audit coverage across multiple jurisdictions.
At this stage, larger international audit firms may become more relevant due to global network coverage, internal specialist resources, and investor familiarity.
Conclusion
Selecting an audit firm for a newly formed group is not about brand prestige alone. It is about aligning the firm’s capabilities with the group’s geographic footprint, transaction history, and reporting complexity. The most suitable firm is the one whose capabilities match the group’s actual reporting needs. In practice, the audit structure often evolves alongside the group’s reporting complexity, international footprint, and transaction activity.
About Group Accounting Partner
Group Accounting Partner is a modern, AI-enabled accounting advisory boutique specializing in group accounting, consolidation, and financial reporting for PE/VC-backed companies and international mid-market groups.