Your EOR arrangement is a recurring financial drain: 15-25% markup on every international salary, administrative fees €150-400 per employee per month compounding, hidden costs for immigration and benefits, zero economies of scale with per-employee costs that don't decrease with volume, compliance risk where you're liable but lack control, no tax optimization paying retail rates, contractual lock-in creating vendor dependency. The financial impact compounds annually: employee count grows with EOR costs scaling linearly, salary increases apply to higher base with markup percentage, provider fee increases from weak negotiation position, currency fluctuations add hidden costs, M&A activity adds acquired employees at EOR retail rates.