Deloitte S&O vs EY-Parthenon: Big 4 Strategy Compared
Official: Deloitte S&O Careers ↗|EY-Parthenon Careers ↗
Quick Summary
Both Deloitte Strategy & Operations and EY-Parthenon are established consulting firms with strong reputations. Deloitte S&O is known for implementation interests, while EY-Parthenon excels at pe career focus. Your choice should depend on your career goals, preferred working style, and cultural fit.
Detailed Comparison: Deloitte S&O vs EY-Parthenon
| Category | Deloitte S&O | EY-Parthenon |
|---|---|---|
| Heritage | Organic strategy growth | Acquired Parthenon (2014) |
| Size | Larger practice | Smaller, more focused |
| Focus | Broad strategy + ops | PE, education, healthcare |
| Interview Process | Immersive, group cases | Candidate-led, PE flavor |
| Compensation | Big 4 strategy rates | Similar to Deloitte |
| PE Exits | Possible but less common | Stronger PE pipeline |
Key Takeaways
- Heritage: EY-P has boutique heritage
- Size: Deloitte bigger
- Focus: EY-P more specialized
- Interview Process: Different experiences
Who Should Choose Which?
Choose Deloitte S&O if you…
- ✓Implementation interests
- ✓Broader strategy scope
- ✓Larger network preference
Choose EY-Parthenon if you…
- ✓PE career focus
- ✓Sector specialization (edu, healthcare)
- ✓Due diligence interest
Interview Process Comparison
Deloitte S&O Interview Process
- • Candidate-led cases — you drive the structure
- • 3 rounds typical, 45-60 minutes per interview
- • Distinctive elements: Written Case, Group Case Discussion, Partner Panel
EY-Parthenon Interview Process
- • Candidate-led cases — you drive the structure
- • 3 rounds typical, 45-60 minutes per interview
- • Distinctive elements: Strategy Focus, Due Diligence Cases, Market Assessment
Whichever firm you pick, the case bar is the same
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Frequently Asked Questions
Deloitte S&O or EY-Parthenon for PE?
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Methodology.US figures anchored to NYC, May 2026. Firm-specific base, bonus, and signing differ — the comparison reflects reported ranges for each firm at the same tenure and US location, not guaranteed offers. We haven't source-verified non-US figures yet; expect regional variation.
Sources.Glassdoor, Levels.fyi, Management Consulted, IGotAnOffer, plus public job postings on each firm's careers site. Last verified May 2026.