Legal Spend
Should insurance defense work be flat fee or hourly?
Updated July 2026
Neither is right for the whole book. Flat fee works where the matter type is predictable and you have the cost data to set a price that neither overpays the firm on easy files nor underpays it on hard ones. Hourly works where files vary too much to price fairly. The deciding factor is predictability and data, not a blanket preference for one model.
What goes wrong when a flat fee is set without data?
Two failure modes, both expensive. Set the flat fee too high and you overpay the firm on the easy files that settle fast. Set it too low and the firm loses money on the hard files, which invites corner-cutting exactly where the case needs the most work. A flat fee priced without real cost data almost always lands in one error or the other.
The trap is averaging. A flat fee set on the average cost of a matter type will overpay on the many easy files and underpay on the few hard ones, and it is the underpaid hard files, the ones that most need attention, where a firm under financial pressure is most tempted to do less.
When does hourly billing serve a claims organization better?
When the matter type is too variable to price. High-stakes, unusual, or low-volume files can run in directions no one predicts, and a flat fee on them either exposes the firm or the claims organization to a bad estimate. Hourly billing on those files pays for the actual work, which is fairer when the work genuinely cannot be scoped in advance. The tradeoff is you lose cost certainty.
| Model | When it fits | Main risk |
|---|---|---|
| Flat fee | Predictable, high-volume matter types with deep cost history | Overpaying on easy files or underpaying on hard ones if mispriced |
| Hourly | Variable, novel, or low-volume matters that cannot be scoped up front | No cost certainty and no incentive for the firm to be efficient |
| Blended or per-phase | Mixed books where only some phases or types are predictable | Requires cost data cut finely enough to price each phase or type |
How do you set a flat fee that is actually fair to both sides?
Price it off the real distribution, not the average. Pull the historical cost and cycle time for that matter type across many closed files, look at the spread, and set the fee where the firm is paid fairly across the mix of easy and hard files, not just the median. A fee that only works if every file is average will fail the moment a hard one arrives.
- Define the matter type tightly, so the files inside it actually behave alike.
- Pull cost and cycle time for that type across a meaningful number of closed files.
- Study the spread, not just the average, so the fee holds up on the hard files too.
- Revisit the fee as new files close, catching drift before it becomes systematic overpayment.
Can you mix flat fee and hourly across the same book?
Yes, and most disciplined programs do. Put the predictable, high-volume matter types on flat or blended fees where the data supports a fair price, and keep the variable and low-volume matters hourly. The point is not to pick one model for everything, but to match each matter type to the fee structure its cost data can actually justify. Your claims system should track cost by matter type to make that possible.
- Segment the book by matter type before choosing any billing model.
- Assign flat or blended fees only where closed-file data gives a confident cost range.
- Keep the unpredictable and low-volume types hourly until the data supports pricing them.
- Re-sort matter types over time as your cost history deepens and predictability changes.
Common questions
Is flat fee always cheaper than hourly for insurance defense?
No. A flat fee is only cheaper if it is set below what the work would have cost hourly, and setting it that low usually means either you got lucky on the mix of files or the firm is losing money and will eventually cut corners. Priced fairly, a flat fee is not primarily a discount. It is a trade of cost certainty and aligned incentives for the firm's efficiency gains. The real savings in insurance defense come from managing the drivers of cost, staffing, cycle time, and early resolution, not from the billing model alone. A flat fee helps only when the underlying matter type is predictable enough to price without overpaying or underpaying.
How to reduce outside counsel spend→How do we avoid overpaying the firm on easy files under a flat fee?
Price the fee off the full distribution of closed-file costs for that matter type, not a single blended average, and revisit it as new files close. Overpayment happens when a flat fee is set high enough to cover the hard files and then applied to a book that is mostly easy ones. The fix is to segment: the more precisely you define the matter type, the tighter the cost range and the fairer the fee. Tracking actual cost by matter type over time also lets you catch a fee that has drifted away from reality and renegotiate it, rather than discovering years later that a stale flat fee has been quietly overpaying on routine work.
Outside counsel spend by matter type→Does a flat fee cause firms to cut corners?
Only when the fee is set below the real cost of the work. A firm losing money on a file has an incentive to spend less time on it, and if the fee was priced without accurate cost data, that gap is common on the harder files. The protection is twofold: price the fee fairly off real cost history so the firm is not underwater, and measure outcomes and cycle time so you can see if quality slips on a specific file. A fairly priced flat fee paired with outcome measurement removes the corner-cutting incentive far more reliably than hourly billing, which instead rewards spending more time whether or not the file needs it.
How to measure defense attorney performance→How do we decide the split between flat-fee and hourly work?
Sort your book by matter type and rank each type by predictability and volume. The high-volume, tightly clustered types, where closed-file data gives you a confident cost range, are candidates for a flat or blended fee. The low-volume, high-variance, and novel types stay hourly until you accumulate enough history to price them. This is not a one-time decision: as more files close and your data deepens, matter types can move from hourly to flat fee. The goal is to match every matter type to the fee structure its cost data can justify, rather than forcing the whole book onto one model that fits only part of it.
When to use an AFA on litigation→CaseGlide is the litigation intelligence platform for Fortune 500 legal departments and insurance claims organizations. It structures live litigation data from defense counsel into executive decisions: reducing defense spend, settling the right cases sooner, and shrinking litigated claim volume.
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