How much should a law firm spend on acquisition?

Acquisition budgets in small and mid-sized firms are set one of two ways: last year's number nudged, or a percentage borrowed from a general small-business benchmark. Both treat spend as a function of revenue, and neither connects to the thing that actually determines whether more spend helps, which is whether there are fee earners on payroll with hours to fill.

That is the constraint worth building the budget around, because the cost of getting it wrong is asymmetric and immediate in both directions. Under-spending idles a salaried associate whose cost is fixed and running. Over-spending does something subtler and worse: it buys volume in whatever case types happen to be cheapest to acquire, which are rarely the ones the firm runs profitably, and the resulting matters consume the same capacity while returning less. Both errors show up in the same place, which is why they are hard to tell apart from the revenue line.

Reframed as a capacity question, the budget has a natural upper bound. Count the chargeable hours the firm is currently paying for and not using, convert them into the matters that would fill them at your realistic mix, and that is the volume worth buying. Beyond it, additional spend does not buy more revenue — it buys a backlog, longer turnaround, and eventually the intake failures that lose the cases you already won the right to.

The denominator for the market side is available and almost nobody uses it. Federal series publish establishment counts and covered employment by county and by industry code, which means the number of law offices operating in your county and roughly how much legal employment exists there are both free, published annually, and specific to your actual market rather than to a national average. That will not tell you what to spend. It will tell you whether the ambition behind the spend is plausible, which is the more common failure.

The unit that makes the budget defensible is cost per signed case rather than cost per lead or cost per click. In this market that distinction is unusually expensive to get wrong, because the cost per lead in legal advertising is the highest of any tracked industry, and a lead that nobody answers costs exactly the same as one that signs. A firm spending at the top of its range with an intake gap is not over-spending on advertising; it is buying inventory it has no mechanism to collect.

Which suggests a sequencing rule that reliably beats a percentage. Before increasing the budget, establish what share of current enquiries receive a response at all and how long that takes. If the answer is poor, the highest-return use of the next dollar is not media — it is the intake path, because it raises the yield on the spend already committed rather than adding to a pipeline that is leaking at the same rate.