There’s a mathematical formula that very few law firms calculate: acquiring a new client costs several times more than expanding an existing relationship. However, many firms still fail to consider this when structuring their business operations. The consequences often appear in the long-term results, though they are rarely acknowledged.
In strategic assessments with firms of varying sizes, I typically ask management to complete the same exercise: to list the firm’s twenty most important clients. Next to each name, they should record all the areas of practice that client has engaged in the last three years. The result is usually unsettling. Most of the most important clients use only one area of practice. In many cases, the partner knows that the same client works with other firms on different matters. In others, they’ve simply never considered it. This isn’t a lack of technical expertise. It’s a lack of internal visibility into the clients themselves. And it’s a lack of trust and transparency among the partners.
There are three mutually reinforcing reasons why this pattern repeats itself.
The first is cultural. In many firms, the client effectively belongs to the partner who initiated the relationship. Introducing them to a colleague in another area is interpreted as weakening the bond, or as opening a vulnerability in a relationship that took years to build. The fear is understandable. The cost, rarely calculated, is extremely high. But there’s a deeper layer that’s rarely mentioned: the partner who accumulates clients doesn’t just accumulate revenue. They accumulate internal influence, security in the event of an exit, and negotiating power in distribution discussions. Cross-selling doesn’t fail due to a lack of goodwill or the absence of CRM. It fails because sharing a client is, in practice, relinquishing some of that power. No incentive system can solve this if management doesn’t explicitly address it.
The second reason is structural. Practice areas operate in silos, with little cross-functional communication. It’s common for the litigation partner to overhear, in passing, that the client is considering a corporate reorganization, and for that information to be lost between meetings. Three months later, the deal has been closed by another firm.
The third reason is remuneration. In systems where origination accounts for a significant portion of distribution, the partner who introduces the client to a colleague forgoes future revenue. In more diluted systems, the incentive to share exists, but it is rarely intentionally designed. The result, in both models, is the same: cross-selling depends on the individual willingness of each partner, not on the firm’s internal workings.
The practical consequence of this setup is a fragile growth model. To grow, the firm needs to acquire more clients. To acquire more clients, it needs to invest in pipeline development, SEO, events, and content production. All of that is necessary, and no effort in that direction is wasted. But that logic ignores the cheapest, fastest, and highest-converting source of growth that the firm already has at its disposal. The right question, then, isn’t how to sell more externally. It’s how to understand, precisely, how much each current client of the firm is using, and how much they could be using.
The exercise begins before choosing any CRM tool, before the executive committee meeting, before the next marketing campaign. It starts with a map. Who are the firm’s twenty or thirty most relevant clients, considering revenue, strategic importance, or reputation? In how many areas is each client currently being served? In how many areas, considering their business and current stage, should they be being served? Where are the specific gaps? This map demands institutional honesty. And, in almost every firm where this exercise is proposed, it has never been done before.
Based on the map, three decisions become possible. The first is to define, for each relevant client, a relationship manager who manages the entire account, not just the area that originated it. This is the solution everyone proposes, but it doesn’t work in most mid-sized firms. The reason is simple: the originating partner is almost always appointed to this role, and that partner lacks both the incentive and the client’s business acumen to truly fulfill it. The result is a title without substance. For it to work, the relationship manager needs real authority over the account, not just formal responsibility. The second decision is to link part of the compensation to the overall account performance, not just the initial origination. It’s not necessary to dismantle the existing system. It’s enough to create mechanisms that recognize those who expand, introduce, and broaden the reach within an existing client. The desired behavior should be visible in the compensation structure. The third is to establish structured sessions where partners from different areas discuss the clients they share, or could share. Not as a business meeting, but as a joint reading of what is happening in the client’s business, and what the firm might be anticipating for him.
Account expansion isn’t a sales technique. It’s the consequence of a decision about how the firm understands itself and how willing management is to acknowledge what’s truly hindering growth. If the client belongs to the partner, the growth ceiling is the partner’s. If the client belongs to the firm, the ceiling becomes what the firm, as a whole, is capable of offering. Law firms that grow consistently, in Spain and Latin America, make this transition at some point in their trajectory. Not always formally, not always comfortably, but inevitably. It’s the point at which growth ceases to depend on each partner’s individual business agenda and becomes dependent on a collective effort. And it’s the point at which the client you already own stops being a comfortable position and finally becomes a real source of growth.
By Kamilla Marcondes, Head of Operations for Brazil and Portugal at Líder Legal
