Agency vs In-House MICE — 3-Year TCO Model
Editable Excel model + 5-stage maturity framework + transition checklist.
Not advice. Cost benchmarks reflect publicly available data as of May 2026 (Glassdoor, Cvent Planner Sourcing, EIBTM). Your specific cost structure may differ. Use the model as a framework, not a binding cost estimate.
How to use: Print for stakeholder review, or open the Excel model in your tool of choice. Edit input cells (event count, average spend, fully-loaded salary) and the model recomputes the 3-year TCO across 6 organisational models.
The matrix (alphabetical)
| Option | 3-year TCO | Flexibility | Control | Expertise breadth | Scalability | Supplier relationships | Talent risk (lower=better) | Governance fit |
|---|---|---|---|---|---|---|---|---|
| Agency-only (full outsource) | 4 | 5 | 2 | 5 | 5 | 5 | 5 | 3 |
| In-house solo (1 manager) | 3 | 2 | 4 | 2 | 2 | 3 | 1 | 4 |
| In-house team (2-4 managers) | 4 | 3 | 5 | 4 | 4 | 4 | 3 | 5 |
| Hybrid — in-house + agency surge | 4 | 5 | 4 | 5 | 5 | 5 | 4 | 5 |
| TMC + dedicated CSM | 3 | 4 | 3 | 4 | 4 | 5 | 4 | 4 |
| Boutique agency retainer | 3 | 4 | 3 | 4 | 3 | 4 | 4 | 3 |
How to weight the criteria for your scenario
- Cost-driven decision: 3-year TCO × 2.0, talent risk × 1.4
- Brand-critical events: Control × 2.0, expertise × 1.3
- Volume-growing organisation: Scalability × 2.0, TCO × 1.5
- ESG-mandated: Governance fit × 2.0, control × 1.4
- Specialist event types: Expertise × 2.0, supplier relationships × 1.5
Public sources to cross-reference
- Glassdoor European event manager salary data (2025)
- Cvent Planner Sourcing Report 2025
- EIBTM Industry Report 2025
- IRF Pulse Report 2025 (incentive travel benchmarks)
- Public agency fee disclosures from SITE annual reports