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
- • Online assessment/screening
- • 2-3 rounds of case interviews
- • Behavioral/fit interviews
- • Final round with partners
EY-Parthenon Interview Process
- • Online assessment/screening
- • 2-3 rounds of case interviews
- • Behavioral/fit interviews
- • Final round with partners
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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. Compensation outside the US varies materially by office; specific regional multipliers are an active workstream and not yet source-cited per cell.
Sources.Glassdoor, Levels.fyi, Management Consulted, IGotAnOffer, plus public job postings on each firm's careers site. Last verified May 2026.