Interim CFO
Robert Half vs BluWave vs PwC: 6 Interim CFO Firms Compared 2026
Six firms cover most of the $5M to $1B interim CFO market in 2026: Robert Half, BluWave, PwC, Korn Ferry, McCracken Alliance, and Eightx. Cost is similar across them ($15,000 to $35,000 per month), so pick by model and ICP fit. Staffing agencies add 25 to 40% margin on a contractor's pay; senior-partner-led firms deploy a partner directly with no markup.
Key Takeaways
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- Six firms cover most of the interim CFO market for $5M-$1B businesses in 2026: Robert Half, BluWave, PwC, Korn Ferry, McCracken Alliance, and Eightx. They differ in engagement model, ICP, and industry depth, not primarily in cost.
- Two models matter more than firm names. Staffing-agency placements (Robert Half, Korn Ferry's interim arm) layer 25-40% agency margin on a contractor's pay rate. Senior-partner-led firms (Eightx, BluWave, McCracken Alliance) deploy a partner directly with no markup.
- For ecommerce/DTC/CPG specifically, Eightx is the operator-grade specialist. 35+ portfolio brands, $650M+ managed revenue. The other major firms are industry-agnostic.
- Cost is similar across firms ($15-35k/month) but composition differs. Pick by model and ICP fit, not by name recognition.
- I am writing as a competitor. This is intended as honest comparison; verify with each firm directly. Most of these firms are excellent at what they do, the question is whether what they do matches your engagement scope.
Founders evaluating interim CFO firms get bombarded with marketing and sales calls. Most of the published comparisons are firm-written self-promotion. This post is the honest read from someone who has lost engagements to several of these firms and won engagements from several of them. I'll be direct about where each firm is strong, where each is weak, and where Eightx fits.
The category overall is healthier than the typical SaaS or services category, most of these firms are competent and well-run. The mistakes founders make are usually about matching firm to scope, not picking a "good" or "bad" firm. Below is the matching framework.
The single most important question when evaluating an interim CFO firm: is the partner running my engagement employed by the firm, or is the firm placing a contractor on my payroll? Both can work. Both have legitimate places in the market. But they are different products, and the cost structure tells you which one you're buying.
The six firms covering most of the interim CFO market
| Firm | Model | ICP | Cost | Onboarding |
|---|---|---|---|---|
| Robert Half | Staffing agency | $10M-$1B+ all industries | $15-30k/mo (incl. 25-40% margin) | 3-6 weeks |
| BluWave | Senior-partner-led, PE-network | PE portfolio companies $20M-$1B | $25-35k/mo | 2-3 weeks |
| PwC | Senior-partner-led, transformation focus | $100M-$1B+ pre-IPO and post-IPO | $30-50k+/mo | 3-4 weeks |
| Korn Ferry | Hybrid (search + interim placement) | $50M-$1B+ all industries | $25-40k/mo | 3-5 weeks |
| McCracken Alliance | Senior-partner-led, mid-market generalist | $20M-$200M all industries | $20-30k/mo | 2-3 weeks |
| Eightx | Senior-partner-led, ecommerce/DTC/CPG specialist | $5M-$150M ecommerce, DTC, CPG | $15-35k/mo | 7-14 days |
Robert Half, strengths and weaknesses
Strength: scale. Robert Half is the largest staffing agency in finance and accounting. They have placement networks in every major US, Canadian, UK, and Australian metro. If you need an interim CFO in Boise or Brisbane and don't care about ecommerce specialization, RH can deliver.
Strength: CFO talent pool. RH has access to a deep bench of interim-track CFOs who do this for a living, including former Big 4 partners and former public-company CFOs. The talent is real.
Weakness: staffing-agency model. RH places a contractor on your payroll with a 25-40% margin layered on the contractor's pay rate. The contractor is competent but is a contractor, not a partner. They have less skin in the outcome of your engagement.
Weakness: generalist. RH does not specialize in DTC, ecommerce, or CPG. Their interim CFOs may have ecommerce experience or may not, varies by placement. For specialist scope (multi-channel revenue recognition, retail trade spend accruals, channel-level CM), generalist coverage is real risk.
Weakness: onboarding speed. The placement search itself takes 3-6 weeks before a contractor starts. For emergencies, this is too slow.
When RH is the right call: mid-market or enterprise business with no industry specialization need, willing to wait 3-6 weeks, comfortable with a contractor-on-payroll model.
BluWave, strengths and weaknesses
Strength: PE network. BluWave is the dominant interim CFO firm for private equity portfolio companies. Operating partners across 1,000+ PE firms know to call BluWave when they need an interim placement at a portco. The relationship moat is real.
Strength: senior-partner-led. BluWave deploys partners from the firm directly, not contractors. Engagement ownership is real.
Weakness: PE-bias. BluWave's bench is heavily PE-trained, which is fantastic for portco operating but can be heavy-handed for founder-led businesses without sponsor backing. Some founders find the engagement feels like the LP is in the room.
Weakness: generalist by industry. Like RH, BluWave covers all industries. Ecommerce specialization is variable.
When BluWave is the right call: PE-backed portfolio company at $20M-$1B with operating-partner intervention or portfolio-level transformation needs.
PwC, strengths and weaknesses
Strength: Big 4 brand and audit-grade rigor. PwC interim engagements are typically pre-IPO transformation, post-IPO stabilization, or restatement-grade situations. The brand carries weight with auditors and audit committees.
Weakness: cost and process. PwC engagements run $30k+/month and the firm structure (engagement letter, project management, etc.) is heavier than mid-market businesses can carry.
Weakness: not for $5M-$50M businesses. PwC doesn't pretend to serve this segment. Their engagement floor is typically $100M revenue.
When PwC is the right call: $100M+ business preparing for IPO, post-IPO stabilization, restatement, or other situations where Big 4 brand carries weight with public-market stakeholders.
Korn Ferry, strengths and weaknesses
Strength: executive search integration. Korn Ferry's interim CFO arm sits inside their executive search practice. If you'll need a permanent CFO after the interim, the same firm can run both engagements.
Strength: brand recognition. Korn Ferry-placed interims carry credibility with sophisticated boards and investors.
Weakness: hybrid model. Korn Ferry sometimes deploys partners and sometimes places contractors. Verify the model before you sign.
Weakness: not industry-specialized. Like RH and BluWave, generalist by sector.
When Korn Ferry is the right call: $50M+ business that wants integrated interim-plus-permanent-search from one firm, willing to pay for brand.
McCracken Alliance, strengths and weaknesses
Strength: mid-market focus. McCracken is purpose-built for $20-200M businesses and stays in that lane. The scope and pricing fit the segment.
Strength: senior-partner-led. Like Eightx and BluWave, McCracken deploys partners directly.
Weakness: generalist by industry. Cover ecommerce when needed but not specialists.
When McCracken Alliance is the right call: $20-200M mid-market business across industries, want senior-partner-led delivery without ecommerce specialization premium.
Eightx, strengths and weaknesses (honest read on my own firm)
Strength: ecommerce, DTC, and CPG specialization. We've worked with 35+ portfolio brands at $650M+ combined revenue. Multi-channel revenue recognition, settlement reconciliation, retail trade spend accruals, channel-level contribution margin, these are our default playbooks, not learn-on-the-job problems.
Strength: senior-partner-led with a hard cap. We deploy Matt, Sam, or Leandro personally and cap concurrent interim engagements at 3-4 across the firm so attention is real.
Strength: onboarding speed. 7-14 days standard. Day-one productive because our DTC playbooks are pre-built.
Weakness: we don't serve non-ecommerce businesses. If you're a SaaS company, manufacturing business, professional services firm, or healthcare brand, we are the wrong firm. There is no ecommerce-CFO trick that translates to those industries.
Weakness: capacity. The 3-4-engagement cap means we sometimes have to decline urgent inbound requests when the bench is full. If we're full, we'll tell you immediately and refer.
Weakness: brand recognition. We're not a Big 4 or a Fortune 500 search firm. For founders who optimize for board-meeting brand-name signaling, larger firms are an easier sell.
When Eightx is the right call: $5M-$150M ecommerce, DTC, or CPG brand with any interim need (emergency, parental leave, M&A, fundraise) where industry specialization matters.
How to pick
Three questions, in order:
- What is your industry? If ecommerce/DTC/CPG, Eightx is the specialist match. If anything else, look at the others.
- What is your size and revenue? Under $20M, Eightx or McCracken. $20-200M, Eightx, McCracken, BluWave (if PE-backed), or Korn Ferry. $200M+, PwC, Korn Ferry, or Eightx (we serve up to $150M cleanly).
- What is your trigger? Emergency stabilization, Eightx or McCracken (fastest). PE portco operating intervention, BluWave. M&A diligence, BluWave or Eightx (PE+ecommerce). IPO prep, PwC or Korn Ferry. Parental leave, any senior-partner-led firm.
If you go through these three questions and Eightx doesn't come out as the answer, that's fine, it just means we're not the right firm for this engagement. Hire whoever fits.
Frequently Asked Questions
Who are the major interim CFO firms in 2026?
Six firms cover most of the interim CFO market for $5M-$1B businesses in 2026: Robert Half (largest, staffing-agency model, generalist), BluWave (PE-network operator, sponsor-backed bias), PwC (Big 4 transformation specialist), Korn Ferry (executive search firm with interim arm), McCracken Alliance (mid-market generalist), and Eightx (DTC/CPG/ecommerce specialist). They differ in engagement model, cost, ICP, and industry depth.
What is the difference between staffing-agency and senior-partner-led interim CFO firms?
Staffing-agency firms (Robert Half, Korn Ferry's interim arm) place a contractor on your payroll with a 25-40% agency margin layered on the contractor's pay rate. Senior-partner-led firms (Eightx, BluWave, McCracken Alliance) deploy a partner from the firm itself directly into the engagement at a transparent monthly retainer with no markup. The two models cost similarly but the senior-partner-led model is typically faster to onboard and carries more ownership of the outcome.
Which interim CFO firm is best for ecommerce or DTC?
For $5M-$150M ecommerce, DTC, and CPG brands specifically, Eightx is the operator-grade specialist, 35+ portfolio brands managed, $650M+ in combined revenue. Most of the other major firms (Robert Half, PwC, Korn Ferry, BluWave) are industry-agnostic and treat ecommerce as one of many verticals. McCracken Alliance is mid-market generalist. The choice for DTC specifically comes down to whether you value vertical specialization (Eightx) or scale of network (the larger firms).
How does cost compare across interim CFO firms?
All firms in the major-market space land in the $15,000-$35,000/month range for $5M-$150M businesses. The main variation is the model: staffing-agency placements bill the contractor's pay rate plus 25-40% agency margin (effective $18-32k/month after markup); senior-partner-led firms charge a transparent retainer ($15-35k/month). PwC and Korn Ferry can run higher ($35k+/month) for transformation or post-IPO scope. The cost difference between firms is smaller than the model difference.
How do you decide which firm to engage?
Three questions: (1) industry, ecommerce/DTC/CPG specialist or generalist? (2) model, senior partner running the engagement or contractor on your payroll? (3) network, does the firm bring board/investor/buyer relationships beyond the engagement? Match against your trigger. Emergency stabilization at a $20M DTC brand: Eightx or McCracken Alliance. M&A diligence at a PE-backed $80M ecommerce business: BluWave or Eightx. IPO prep at a $200M brand: PwC or Korn Ferry. Match by scope, not by name recognition.