Most B2B SaaS platforms — CRMs, project management tools, email clients — charge per seat, also called per-user pricing. One licence per team member. Add a person, pay more. This model makes sense for software where every additional user consumes meaningful resources or where the value is directly tied to user count.
Per-client pricing is an alternative model used by platforms built specifically for client-facing businesses. Instead of charging per team member, the platform charges per managed client record — the number of clients your firm actively manages. Team size is irrelevant. A 15-person agency managing 40 clients pays the same as a 12-person agency managing 40 clients.
For professional service firms, the difference is significant. A 7-person firm on HubSpot Sales Hub Professional (€160/seat) pays roughly €1,120/month. The same firm on Clientia Atelier (€119/month, per managed clients) pays €119/month — while also getting contracts, e-signature, and a client portal included. The cost structure changes entirely when the pricing axis is client book size rather than headcount.
Per-client pricing also aligns cost with the value the platform delivers. A professional services firm earns revenue from its clients, not from its team members. A pricing model that scales with client book growth — not with hiring — is a more natural fit for how boutique professional service businesses grow.