A fractional CMO for a B2B SaaS startup is a part-time senior marketing executive who provides C-suite marketing strategy and leadership without the cost or commitment of a full-time hire. For startups approaching Series A, a fractional CMO typically costs $3,000–10,000 per month — compared to $200,000+ for a full-time CMO — and can be engaged on flexible monthly retainers. B2B SaaS startups most commonly bring in a fractional CMO when they have product-market fit but lack th