How to Increase Billable Hours at Your Law Firm: 7 Practical Strategies
Most law firms bill only 60–70% of the hours their timekeepers actually work. The rest disappears into tasks that were never recorded, written off during review, or reconstructed so poorly they couldn't be justified on an invoice. For a five-attorney firm billing at $350/hour, recovering even one hour per person per day is worth over $600,000 a year.
This guide covers seven practical strategies to increase billable hours—not by working more, but by capturing the work you're already doing.
Why Firms Leave Billable Hours on the Table
Before fixing the problem, it helps to know where the leakage happens:
- Reconstruction lag. Time entered hours or days after the fact is consistently shorter and less accurate than contemporaneous entries. Attorneys recall the work but forget the detail that justifies the full time.
- The "not worth billing" habit. A two-minute call or a quick email scan gets dismissed as too small to log. Multiplied across a team and a year, this is significant.
- Matter attribution errors. Time goes to the wrong matter or gets parked in overhead because the correct matter number wasn't at hand when recording.
- Write-off pressure. When entries look thin, billing review writes them down. The problem isn't the reviewer—it's that thin entries invite doubt.
- Administrative friction. Every minute spent opening a timesheet, searching for matter codes, or pasting in a description is a minute the attorney would rather not spend. If it's painful, it happens less often.
7 Strategies to Increase Billable Hours
1. Capture Time While It Happens, Not at Day's End
The single most impactful change most firms can make is moving from end-of-day (or, worse, end-of-week) reconstruction to contemporaneous recording. ABA surveys consistently show that attorneys who record time as they work bill significantly more than those who reconstruct.
Practically, this means having a way to start and stop a timer—or log a note—without leaving the application you're already in. Even a browser extension or desktop widget that lets you tag an activity in under 10 seconds reduces the temptation to defer.
2. Use Automatic Time Capture to Eliminate the Logging Step Entirely
Manual timers help, but they still require the timekeeper to remember to start them. Automatic time capture goes a step further: a lightweight agent observes calendar events, emails, calls, and documents in the background and drafts time entries from that activity—without interrupting the work itself.
Timentry's passive capture connects to Microsoft 365 and Outlook, Google Workspace and Gmail, Zoom, and RingCentral and other telephony systems to assemble a draft timesheet from actual activity. The timekeeper reviews and submits; they don't need to remember to log.
This approach is especially effective for recovering the "not worth logging" micro-tasks: the three-minute call, the quick email chain, the document review that ran longer than expected. Those entries are created automatically. The attorney decides whether to keep them—not whether to log them in the first place.
3. Bill for All Client Communications—Including the Small Ones
"I only spent two minutes on it" is how billable hours vanish. Most retainer agreements and billing guidelines permit charges for brief communications. A six-minute minimum (0.1 hours) is standard in many jurisdictions.
Set a firm policy: every client email, every call, every document touch gets logged—even if it's minimum increment. Use your billing rules engine to enforce the minimum increment automatically, so timekeepers don't have to calculate it themselves.
4. Fix Matter Attribution Before Submission, Not After
Time that goes to the wrong matter often gets written off or underbilled. The fix isn't stricter review—it's better attribution at entry time.
Tools that automatically match activity to matters using sender email domains, names in correspondence, and matter numbers in subject lines dramatically reduce misattribution. When the draft entry already has the correct matter, the timekeeper is confirming, not searching. That's faster, and it's more accurate.
For a deeper look at how AI attribution works without sacrificing accuracy for auditable determinism, see our guide on automatic timekeeping for law firms.
5. Reduce Non-Billable Overhead That Crowds Out Client Work
Increasing billable hours doesn't always mean doing more billable work—it can mean doing less of the overhead that displaces it. Common culprits:
- Manual timesheet entry at end of day (15–30 minutes daily)
- Searching for matter numbers before you can start an entry
- Re-opening email threads to reconstruct what you discussed
- Correcting attribution errors caught in billing review
Each of these is a drag on the time available for client work. Automating timesheet entry and attribution frees that time without asking attorneys to work longer hours.
6. Review Unbilled Hours Weekly Before They Age Into Write-Offs
Captured-but-unbilled time has a shelf life. The longer it sits, the more likely it is to be written down in review—because the context is gone and the entry looks thin, even if the work was real.
A weekly review of captured-but-unbilled hours, sorted by matter and attorney, surfaces entries before they age. A real-time view of unbilled hours by matter—against the matter's budget or retainer balance—lets billing managers flag overruns before the invoice, not after.
Realisation rate tracking and utilisation dashboards give practice managers the visibility to intervene early. See also our guide on utilisation rates for professional services firms.
7. Address Billing Guideline Compliance Before Submission
Outside counsel guidelines and e-billing rules reject a material percentage of submitted entries at some firms—and rejections mean non-payment, not just delay. Common rejection reasons include prohibited task codes, vague narrative language, billing increments that violate the client's guidelines, and timekeeper classifications that don't match the work described.
Enforcing billing rules at entry time—before the invoice is sent—eliminates rejection-driven write-offs. Compliance rules can flag or block non-compliant entries while the timekeeper still has context to fix them. See our overview of outside-counsel guidelines and e-billing rejection reasons.
How Much Can You Recover?
The answer varies by firm, practice type, and current recording habits. But the arithmetic is straightforward: if a 10-attorney firm currently captures 1,500 billable hours per attorney per year and the industry average is closer to 1,800, recovering even half that gap at $350/hour is $525,000 in additional revenue—with the same team, doing the same work.
The leakage is already there. The question is whether you have a system to capture it.
The Manual vs. Automatic Capture Trade-off
Every strategy in this guide works better when the entry friction is lower. Manual timers and notebooks work, but they depend on timekeepers' discipline and memory. Automatic capture removes both dependencies: the activity is logged whether or not the attorney remembered to start a timer.
The trade-off is privacy and review overhead. A passive-capture system must give timekeepers full control over what they submit—granular privacy controls and clear review steps are not optional. Firms evaluating tools in this category should ask specifically how activity data is filtered before an attorney ever sees a draft entry.
If you're comparing tools, our guides on Laurel alternatives, Memtime vs Timentry, and Timely alternatives cover how the major options differ on privacy, integrations, and small-firm fit.
Next Steps
If your firm's billable-hour capture is below target, the highest-leverage starting point is usually strategy 2 above: shifting from manual reconstruction to automatic capture. The other strategies—minimum increments, matter attribution, weekly reviews, billing-rule enforcement—layer on top of that foundation.
Timentry offers a free pilot for professional services firms. The features page covers the full capture and billing workflow in detail.