What problem does it solve? Independent IT consultants in France often leave money on the table because ESN/SI margin structures, platform fees, and billing regimes (portage salarial, micro-entreprise, SASU) are opaque. This Skill decodes that ecosystem so freelancers can position their TJM correctly, choose the right billing structure, and avoid payment-cycle surprises. ## Core Features & Use Cases - ESN Margin Analysis: Breaks down Tier 1/2/3 ESN margin models (25-50%) and shows how the same profile gets quoted at 450 vs 850 EUR/day depending on the channel. - Billing Structure Comparison: Computes net income differences between portage salarial, micro-entreprise, and SASU/EURL at a given TJM, including charges and social protection trade-offs. - Platform & Rate Positioning: Compares Malt, collective.work, Comet, Crème de la Crème, and Free-Work on fees, typical TJM ranges, and gotchas, plus a negotiation playbook and seasonal market calendar. - Use Case: A senior Salesforce architect moving from a CDI to freelance asks what TJM to quote on Malt. The Skill benchmarks the specialization premium, calculates net income under portage vs micro-entreprise, and drafts an anchoring strategy for ESN negotiations. ## Quick Start Ask the agent to benchmark your target daily rate and compare portage salarial versus micro-entreprise net income for your specialization.