By Ciro Di Stefano
For almost two centuries, the partnership model at elite law firms barely changed. If you made partner, you became one of the people who owned the firm and shared directly in its profits.
But what stood firm for nearly 200 years now looks very different, and the change has happened quickly, largely within the space of a single decade.
The recent decision by Freshfields and Sullivan & Cromwell to introduce non-equity partner tiers is one of the clearest signs yet that the traditional model is shifting. For many in the industry, these moves mark some of the final nails in the coffin of what could now be called the old ways of Big Law partnership.
What was once the standard structure has now become the exception. Fewer than ten firms in the AmLaw 100 still operate with a single-tier partnership. Even among those firms, the market view increasingly seems to be that it is a question of when, not if, they introduce a non-equity tier.
Historically, partnerships were deliberately small. A limited group of senior lawyers owned the firm together, sharing both profits and influence over its direction. Promotion was difficult and often took more than a decade, but reaching partnership meant becoming part of the business itself.
That structure shaped the identity of the profession. Many of the world’s most prestigious firms saw the single-tier partnership not simply as a governance model but as a defining feature of their culture.
Today, that model is being reshaped.
From ownership to hierarchy
Law firm partnerships were deliberately narrow. Only a limited number of lawyers were admitted to the ownership group, and the title of partner carried weight precisely because it was difficult to obtain.
Partners shared profits and, at least in theory, influence over the direction of the firm. Associates worked towards that goal for years, often with no guarantee of reaching it.
But the economics of modern law firms look very different from those of a generation ago.
Large firms now operate as global businesses, employing thousands of lawyers across multiple offices. They compete aggressively for talent and increasingly organise themselves around financial metrics more familiar to corporate boardrooms than traditional partnerships.
One number in particular dominates industry conversations which is profit per equity partner. Maintaining that figure at competitive levels has become a central concern for many firms. As a result, partnership structures have begun to adapt.
The rise of the non-equity partner
The introduction of non-equity partnership provides a relatively straightforward solution.
It allows firms to promote senior lawyers to the title of partner without extending ownership of the business. These lawyers often play significant roles in client relationships and deal execution, but they do not participate in the equity pool that determines partner profits.
The model enables them to recognise and retain experienced lawyers while preserving a tightly controlled group of equity partners. It also allows firms to expand their senior ranks without diluting profits.
In practical terms, it increases leverage. There are more senior lawyers generating revenue while the ownership pool remains relatively small.
When traditional firms shift
Non-equity partnerships are not new. Many firms, particularly in the US, have operated with tiered partnerships for years.
What makes recent developments notable is the identity of the firms adopting them.
Sullivan & Cromwell has long been associated with a conservative approach to structure. The firm built its reputation on elite deal work and institutional stability rather than change.
Its decision to introduce an income partner tier suggests that even firms strongly attached to the traditional model are responding to changing economic realities.
The move has been framed as a way to expand promotion opportunities and improve retention. But it also reflects the growing difficulty of maintaining a purely single-tier partnership in a highly competitive market.
Competitive pressure from the U.S.
At Freshfields, the context is different.
For decades the firm embodied the classic Magic Circle structure, with partners paid on a structured scale and promotions tightly managed. That model prioritised cohesion and long-term stability.
But Freshfields now competes more directly with large US firms, particularly in areas such as private equity. Many of those competitors operate under structures that rely heavily on non-equity partners to expand their senior ranks and increase operational flexibility.
Introducing a non-equity tier allows Freshfields to compete more easily within that environment.
In effect, the firm is adapting its structure to match the dynamics of a more international and competitive legal market.
The influence of a new model
Kirkland & Ellis is frequently cited as a catalyst for many of these changes.
Over the past decade, Kirkland has built one of the most profitable law firm businesses in the world. A key element of its model is a large group of non-equity partners supporting a relatively small equity partnership.
The structure allows the firm to grow rapidly, assemble large teams for complex private equity transactions and maintain exceptionally high profits for its equity partners.
For years, rival firms argued that the model was incompatible with their own traditions. But as Kirkland continued to expand, and as partners increasingly moved between firms, those reservations began to soften.
Partnership in name
The result is a subtle but important shift in how large law firms are organised.
Many now operate with three distinct layers: associates, non-equity partners and equity partners.
The language of partnership remains central to the profession, but the internal structure increasingly resembles that of a large corporate organisation.
Ownership is concentrated in a smaller group. Senior lawyers sit between associates and the equity partnership, often carrying significant responsibilities without sharing in the firm’s profits.
The title of partner still carries prestige. But it no longer always means what it once did.
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Why Big Law’s Partnership Model Is Quietly Changing
