Nader Karayanni
TL;DR: Clients now expect AI savings to show up on defense invoices, and ABA Formal Opinion 512 says lawyers billing hourly may charge only for time actually spent. Defense firms that absorb the reduction on the same operating model can see profit collapse, while firms that redeploy freed capacity and rethink pricing can grow profitability. A purpose-built AI such as newcase.ai automates the document-heavy workup that frees that capacity.
Key Takeaways
A 25% reduction sits within Deloitte's projected 20% to 40% decline in external legal spend over the next three years.
Under ABA Formal Opinion 512, hourly billers can charge only for time actually spent, so AI efficiency directly reduces billable hours on an hourly file.
On an illustrative $10M practice, absorbing a 25% reduction drops profit from $3.0M to $0.5M, while redeploying capacity keeps it near $2.9M.
Carriers want outcomes, exposure analysis, and partnership, and ~70% are open to outcome-based fees that firms rarely propose.
Automating records review, medical chronologies, and deposition summaries with a purpose-built platform such as newcase.ai can free capacity without cutting quality.
A managing partner at one of the largest national defense firms told us about a request his firm received recently.
The client expects 25% less billable work because of recent advances in AI. Starting now.
It was a shock. The technology is ready. Changing processes, training lawyers, and shifting habits across a firm is where the real friction sits, and that takes far longer than buying a tool.
This is the AI billable hour problem in insurance defense. Here's why the request is coming, what it does to firm profitability, and how defense firms can turn it into more work and higher margins.
Is a 25% cut in billable work an outlier?
A 25% reduction is increasingly plausible given what clients across the market now expect. Deloitte projects that external legal spend could fall 20% to 40% over the next three years as legal departments capture AI benefits and bring more work in-house. A 25% ask sits squarely inside that range.
The pressure is broad:
Rate cuts are expected: 92% of in-house teams expect or are negotiating AI-related rate cuts from outside counsel (Axiom, July 2026).
Savings haven't shown up: 59% of in-house professionals report no noticeable savings yet from their law firms' AI use (ACC).
The billing model hasn't moved: 90% of legal dollars still flow through standard hourly arrangements (Thomson Reuters).
Clients see the technology and wait for the invoice to move. Defense firms will hear this request more often, and sooner.
Can defense firms bill for the time AI saves?
Not for hours that were not actually worked. Under ABA Formal Opinion 512, a lawyer billing hourly may charge only for time actually spent, including time using an AI tool and reviewing its output. Texas and Florida ethics guidance takes substantially the same position.
This turns the AI billable hour debate into a real economic constraint. On an hourly file, when AI reduces the time required to complete a task, the firm cannot bill the hours it no longer worked.
That leaves defense firms two primary ways to capture the economic benefit:
Redeploy the capacity: fill the freed hours with more files.
Change the price: bill by file, phase, or outcome, so the firm can retain more of the efficiency gain, subject to fee-reasonableness rules and the client agreement.
Firms that do neither will see revenue fall as AI use grows.
