Law Firms Are Changing Their Pricing Models — and That Makes Understanding Where Time Goes More Important Than Ever

For decades, the logic behind legal billing was relatively straightforward: time was the primary unit of billing.

A lawyer worked on a matter, recorded the hours spent on it, and — unless statutory fee regulations applied — billed those hours at an agreed hourly rate.

This model remains particularly influential in commercial law and intellectual property law. The so-called billable hour directly connects the time spent working with revenue. If a lawyer needs ten hours instead of eight to complete a task, the billable fee generally increases accordingly.

But this model is increasingly coming under pressure.

Clients are demanding greater cost transparency and predictability. Corporate legal departments are working with defined budgets. Legal Operations is becoming increasingly professionalized in the procurement of legal services. At the same time, automation and artificial intelligence can significantly accelerate certain legal workflows.

Against this backdrop, alternative fee arrangements are becoming increasingly important.

However, the billable hour is far from disappearing. Even in 2026, hourly billing remains a central part of the legal market. At the same time, recent research indicates that alternative fee arrangements are already widely used. A 2025 U.S. survey by Best Law Firms, for example, found that 72% of participating law firms offered alternative fee arrangements, with the figure rising to 90% among firms with more than 50 lawyers.

The real development, therefore, is likely to be less about completely replacing hourly billing and more about the growing coexistence of different pricing models.

For certain types of legal work, the billable hour remains useful. For others, flat fees, capped fees, retainers, portfolio pricing, and hybrid models are becoming increasingly attractive.

But this shift has an important consequence that is often overlooked:

The less working time is billed directly to the client, the more important that time can become for the law firm's internal management.

A flat fee does not eliminate working time.

It simply eliminates its direct use as the billing unit.

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Why Clients Find Flat Fees Attractive

From a client's perspective, the primary advantage of a flat fee is obvious: the price is known in advance.

For example, if a law firm agrees to charge €5,000 for preparing and filing a particular application, the legal department does not have to worry about whether the final invoice will be based on 12, 18, or 25 hours of work.

This makes budgeting and cost control considerably easier.

At the same time, flat fees change the way clients think about the value of legal work.

The client is no longer primarily purchasing a certain number of legal working hours. Instead, the client is purchasing a defined service or a specific outcome.

Economically, this is a significant difference.

Under traditional hourly billing:

Fee = Time × Hourly Rate

Under a flat fee:

Fee = Agreed Price for a Defined Scope of Work

How long the law firm actually takes to deliver the service initially becomes the firm's own economic concern.

This makes flat fees particularly interesting for recurring and relatively standardized legal services.

In intellectual property law, examples could include certain filing procedures, renewals, recordals, standardized portfolio work, or clearly defined stages of legal proceedings.

Flat fees also create a different incentive for efficiency.

Under hourly billing, reducing the time required to complete a task initially means fewer billable hours. Under a flat fee, more efficient service delivery can directly improve the firm's margin.

This relationship is becoming increasingly important as Legal Tech and artificial intelligence reshape legal workflows. Market analyses are increasingly identifying a connection between AI-driven productivity gains and the growing discussion around alternative pricing models.

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The Economic Paradox of Artificial Intelligence

Consider a simplified example.

A law firm charges a flat fee of €5,000 for a particular legal service.

Historically, lawyers and legal professionals required an average of 15 hours to complete the work.

Through better workflows, document automation, templates, AI-assisted research, and automated analysis, the average processing time eventually falls to nine hours.

Under the flat-fee model, revenue initially remains €5,000.

The productivity gain can therefore translate directly into higher margins for the law firm.

Under a pure hourly billing model, the same productivity gain can initially reduce billable revenue.

If the work previously required 15 hours but now takes only nine, only nine hours can generally be billed.

This creates a remarkable economic tension:

The traditional hourly model can economically penalize productivity improvements, while flat fees can reward them.

This is one reason why the growing use of artificial intelligence is changing the discussion around legal pricing.

Thomson Reuters has been highlighting for some time the growing pressure on traditional legal pricing models and the search for more value- and outcome-oriented approaches to legal fees.

However, this does not mean that every flat fee is automatically profitable.

Quite the opposite.

With a flat fee, the law firm takes on part of the economic risk that would otherwise sit with the client under an hourly billing model.

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With Flat Fees, the Time Risk Shifts

Under the billable hour, the client carries a significant portion of the risk associated with unexpected increases in workload.

If a law firm needs more time to handle a matter, the fee generally increases.

With a flat fee, the situation is different.

If a service has been offered for €5,000, the initial revenue remains €5,000 regardless of whether the firm ultimately requires eight, twelve, or twenty hours internally.

This makes another variable critically important:

the variance in actual workload.

A matter that normally requires ten hours and typically varies between nine and eleven hours is relatively easy to price.

A matter that also averages ten hours but can fluctuate between three and 30 hours is significantly more risky under a flat-fee arrangement.

This distinction is particularly important in legal services.

Not every matter can be standardized.

An unexpected submission from the opposing party, a new legal issue, additional client discussions, an unusual examination report, or a technically complex invention can significantly increase the amount of work required.

This is why the definition of the scope of work is critical when using flat fees.

A flat-fee agreement should not simply state:

“We will handle the matter for €4,000.”

A more precise approach defines which services are included, how many rounds of client communication are covered, which stages of a proceeding are included, and which additional events trigger a new fee agreement.

A flat fee does not necessarily mean “everything included.”

Professionally designed flat fees require systematic scope management.

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The Most Important Metric May No Longer Appear on the Invoice

This is where the role of time tracking changes.

In a traditional billable-hour law firm, time tracking has an obvious purpose:

It provides the basis for the invoice.

With a flat fee, that connection disappears.

This can lead to a dangerous conclusion:

“If we no longer bill hours, we no longer need to track them.”

From a business perspective, that would be a mistake.

The law firm still needs to know how many resources are required to deliver the agreed service.

The relevant question is no longer:

How many hours can we bill to the client?

Instead, it becomes:

How many hours can we afford to spend internally on this service while keeping the agreed flat fee profitable?

Time tracking therefore evolves from a billing tool into a management and controlling tool.

For the economic management of a law firm, this form of time tracking can ultimately become even more important than traditional billable-hour tracking.

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Not Every Hour Costs the Law Firm the Same

There is another important consideration.

For a flat fee to be profitable, simply knowing the total number of hours is not enough.

It also matters who performed those hours.

A partner's hour has a different internal cost structure and opportunity cost from an associate's hour.

The working time of a patent paralegal or another specialized professional must also be assessed differently.

Consider two matters that each require 12 hours.

Matter A

• 8 hours performed by a partner
• 4 hours performed by a specialist

Matter B

• 2 hours performed by a partner
• 4 hours performed by an associate
• 6 hours performed by a patent paralegal

Although both matters require exactly 12 hours, their contribution margins can be significantly different.

This raises another important question:

Is each task being performed by the right person from both an economic and professional perspective?

For standardized services in particular, law firms can achieve significant efficiency gains by distributing work appropriately between lawyers, associates, paralegals, specialized Legal Operations professionals, and technical systems.

Automation and AI add another layer to this equation.

The key metric is therefore not simply working time.

It is the combination of:

time + expertise + internal cost + process + revenue.

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Flat Fees Need an Internal Time Budget

Professional flat-fee pricing should therefore continue to be based on time internally.

Suppose a law firm wants to offer a standardized service for €4,000.

Based on historical data, the firm knows that an economically attractive matter must not exceed a certain level of internal resource consumption.

The flat fee therefore creates an internal time budget.

The client may never see this budget.

For the law firm's management team, however, it can be critical.

Management can then compare planned and actual resource consumption.

For example:

• A matter was budgeted at 10 hours and completed in 8 hours — positive variance.
• A matter was budgeted at 10 hours and required 11 hours — still within an acceptable range.
• A matter was budgeted at 10 hours and required 22 hours — requires analysis.

Only a sufficiently large number of matters creates a reliable data set.

The firm may discover that the original estimate of 10 hours is realistic.

But it may also discover that actual processing time averages 14 hours.

At that point, the firm needs to respond.

It could:

• increase the price,
• reduce the scope of the service,
• optimize the workflow,
• redistribute tasks,
• introduce additional automation, or
• use AI more extensively.

Without time data, management is left with an impression:

“We probably make money on this flat fee.”

That is not controlling.

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Portfolio-Level Analysis Becomes Especially Valuable

Flat fees do not necessarily need to be evaluated in isolation for every individual matter.

Larger client relationships can create a portfolio effect.

Imagine a law firm handling several hundred comparable matters each year for a corporate client.

Some matters are extremely simple.

Others require significantly more work than expected.

As the number of matters increases, the firm can forecast average processing costs more accurately.

The economic principle is similar to risk diversification.

Individual unprofitable matters can be offset by matters that are more profitable than expected.

Pricing therefore becomes increasingly a data-driven portfolio decision rather than simply a matter-by-matter calculation.

But this also requires historical data.

The firm needs to understand:

• which types of matters consistently consume the most time,
• which clients generate above-average communication cycles,
• which activities can be automated,
• where partner time is being used even though delegation would be possible, and
• which processes consistently exceed their expected resource budget.

The larger the flat-fee portfolio becomes, the more important actual resource-consumption data becomes.

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From Billing to Matter Controlling

For law firms, this represents a fundamental change in perspective.

In the traditional billable-hour environment, management focuses heavily on metrics such as:

• billable hours,
• hourly rates,
• utilization, and
• realization rates.

In a law firm increasingly using flat fees, additional questions become important.

How much did a matter actually consume in resources?

How large was the variance from the original estimate?

Which activities caused the variance?

Which matters generated a positive contribution margin?

Which clients generated an unusually high number of unplanned communication cycles?

Which processes were accelerated through automation?

And perhaps most importantly:

Which flat fees need to be adjusted during the next pricing review?

Time tracking therefore becomes part of continuous Matter Profitability Management.

A law firm should not wait until the end of the financial year to discover that a particular category of flat-fee service is economically unsustainable.

Ideally, management should be able to identify during the matter itself when work is consistently exceeding the allocated time budget.

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The Most Important KPI Could Become “Time per Service”

In this environment, a relatively simple metric can become extremely valuable:

Time spent per defined service.

This enables comparisons across months and years.

The metric becomes particularly interesting when combined with artificial intelligence.

Imagine that a law firm introduces a new AI system for analyzing a particular category of documents.

Without historical time data, it is difficult to objectively determine whether the investment actually created an economic benefit.

With a historical time series, the firm can measure the change.

For example:

Before AI implementation:
Average processing time: 12 hours

Six months after implementation:
Average processing time: 8 hours

The firm can now turn the subjective statement “we are working faster” into a measurable productivity improvement.

This is particularly relevant for law firm management because technology investments are also increasing.

According to recent figures from the Thomson Reuters Institute, U.S. law firms significantly increased technology spending in the second quarter of 2026, while direct costs and overhead also increased.

Technology therefore cannot simply work.

It must create measurable economic value.

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TimeSpin as a Low-Friction Tool for Time Controlling

This is where new approaches to time tracking become particularly interesting.

A system such as TimeSpin can be used in a law firm not primarily to turn every recorded minute directly into a client invoice, but to continuously capture actual resource consumption under a flat-fee model.

The physical TimeSpin cube allows different activities or matters to be assigned to individual sides of the cube. Users can switch between activities simply by turning the cube.

The objective is to make continuous time tracking as effortless as possible.

For management and controlling purposes, however, the cube itself is not the most important element.

The real value lies in the data structure created through time tracking.

When working time is consistently assigned to specific matters, clients, or activity types, planned and actual resource consumption can be compared.

For example, a firm might discover that a particular flat-fee service was originally calculated at an average of 7.8 hours but actually requires 10.6 hours.

The data may also reveal that the lawyer's share of the work is increasing, even though the original process design assumed a larger proportion of delegable activities.

TimeSpin is not intended to replace accounting software or a complete Business Intelligence system.

Cost accounting, overhead allocation, personnel cost rates, and contribution margins still need to come from the appropriate financial and management systems.

Time tracking provides one crucial input:

actual resource consumption.

And because flat-fee work no longer necessarily requires detailed time entries for client billing, the internal recording process needs to be particularly simple for employees.

Otherwise, firms risk losing precisely the data they need for their next pricing calculation.

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Time Tracking Without Billing Pressure Can Produce Better Data

The change in purpose can also create a cultural effect.

In a traditional billable-hour environment, every recorded hour has direct financial relevance to the client.

This can lead to discussions about billable versus non-billable activities, minimum billing requirements, and individual billing targets.

With purely internal time tracking for flat-fee services, the purpose changes.

The recorded time is no longer primarily intended to maximize the number of billable hours.

Instead, it is intended to represent the reality of the work process.

This can enable a much more useful management question.

Not:

“Who recorded the most hours?”

But:

“How efficiently did we deliver the agreed service as a team?”

The focus therefore shifts from individual time utilization toward process productivity.

This can become particularly valuable as Legal Tech and AI take over an increasing share of standardized legal tasks.

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The Risk of Creating the Wrong Incentives

However, efficiency measurement must not create a new problem.

Legal work is not industrial manufacturing. Not every legal task can or should be accelerated indefinitely.

Quality, diligence, professional responsibility, and expert review must not be sacrificed simply to complete a matter below an internal time budget.

Effective flat-fee controlling must therefore consider profitability and quality together.

A matter completed in six hours instead of ten represents a genuine productivity gain only if the quality of the legal work remains at least equivalent.

This consideration is particularly important when using generative AI.

Research into AI applications in legal services continues to indicate that performance can vary significantly depending on the task, meaning that professional validation and review of AI-generated results remain essential.

Time saved is therefore not sufficient on its own as a measure of success.

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Flat Fees Need Data — Otherwise They Become a Gamble

The discussion around billable hours and flat fees therefore leads to a surprising conclusion.

At first glance, a flat fee appears to reduce the importance of working time.

In reality, something different happens.

Time disappears from the client's invoice but becomes one of the most important internal management metrics for the law firm.

A flat fee is ultimately a business forecast.

The law firm is effectively saying:

“We believe we can deliver this service profitably at this price.”

Whether that assumption is correct can only be determined by measuring actual resource consumption afterward.

Without that feedback loop, pricing becomes a gamble.

With it, pricing becomes a learning model.

The firm can use every matter to improve the next one.

Prices can be adjusted. Processes can be redesigned. Tasks can be redistributed. Automation opportunities can be identified.

This feedback loop is what allows flat-fee pricing to become economically sustainable over the long term.

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The Future May Not Be “Flat Fee vs. Billable Hour”

The debate is therefore often framed too narrowly.

Billable hour or flat fee.

Time-based billing or value pricing.

Traditional law firm or modern law firm.

The reality is likely to be more nuanced.

Complex matters that are difficult to predict will continue to be suitable for time-based or hybrid fee models.

Standardized and recurring services, on the other hand, can increasingly be priced through flat fees, packaged services, or portfolio agreements.

Law firms therefore do not necessarily need to replace one pricing model with another.

Instead, they need to learn how to select the right pricing model for each type of legal service.

And that requires data.

One of the most important data sets will continue to be time.

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Conclusion: The End of the Billable Hour Is Not the End of the Clock

Flat fees can provide significant advantages for both clients and law firms.

Clients gain greater cost predictability and budget certainty.

Law firms can standardize processes, make greater use of automation, and capture productivity gains more effectively.

Artificial intelligence can reinforce this effect by making certain legal workflows increasingly efficient.

But this opportunity also means that law firms take on greater pricing risk.

Under a flat fee, additional work does not automatically generate additional revenue.

That is why the actual working time of lawyers, associates, patent paralegals, and other professionals does not become less important.

It becomes more important.

Working time plays a significant role in determining whether a flat fee merely looks attractive in a proposal or remains genuinely profitable over the long term.

The central management question is therefore changing.

In the past, it was often:

“How many hours can we bill?”

Increasingly, it may become:

“How much time and which resources do we actually need to deliver a defined service at the agreed level of quality?”

Tools such as TimeSpin can help make this reality visible through continuous, low-friction time tracking and provide the data required for internal planned-versus-actual analysis.

This creates an apparent paradox:

The more law firms move away from the billable hour in client billing, the more important precise internal time tracking can become.

The economic success of a flat fee is not determined solely when the price is set.

It is determined afterward — minute by minute — through the actual delivery of the service.

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Bremen, August 11, 2026 — Oliver Otto