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How Firms Should Be Measuring the Profitability of Matters

Matter profitability matters. Yet most firms struggle to measure it in a manner that is accurate, focused on the levers partners control, and inclines partners to take action. Using margin per partner Hour (MPH) to measure profitability delivers on these objectives.

The MPH measure enables assessment of profitability on matters with widely varying realization and leverage in a directly comparable way. It also allows you compare profitability consistently across clients, practice groups, and partners. But, from discussing the measure with law firm leaders, I know that the reasons the measure works aren't intuitive, so let me start with some principles and then turn to the particulars of MPH.

A first principle: in management, you should align accountability with control; holding people accountable for elements they don't control yields frustration and demotivates. Thus, as we look to partners to manage matters profitably, we should only include in how we measure profitability the things partners directly control: the realized revenues and the amount of time that lawyers of different seniorities dedicate to executing the matter. As partners managing a matter don't control things like an associate's overall level of activity, office rent, etc., these should not be included. In management accounting, the term "margin" is used for profit measures like this that account for some, but not all, costs. Hence the result of subtracting the cost of the executing lawyers' time from the realized revenue of a matter is termed "matter margin."

A second principle is that profitability measures should focus on how much we get out of using a particular, scarce, resource. For example, investors don't look at the appreciation of a stock price in isolation; rather they look at appreciation as a percent of the original share price if the share price of Stocks A and B both rose $10, and their original prices were $5 and $20, respectively, then stock A was the more profitable investment; supermarket managers look at the margin generated per unit length of shelf space shelf space is the scarce resource; it's the thing managers want to get the most out of. For law firms, the scarce resource is partner time there is only so much of it that can be deployed; we want to be sure we get the most out of it. Hence, it makes sense to look at matter profitability relative to the amount of partner time involved.

Bringing the above two principles together suggests matter profitability is appropriately measured by looking at matter 'margin' on a 'per partner hour' basis hence margin per partner hour, or MPH for short. It is noteworthy that MPH mirrors the ubiquitous profit per partner (PPP) measure of overall performance MPH is in essence the matter-level counterpart of the summary PPP metric.