Clio's annual legal trends report lists 62 KPIs law firms should track. If you're a solo attorney or managing partner of a 5-person firm, 62 KPIs is noise — it guarantees you'll track none of them consistently.
The goal of this guide is the opposite: the minimum set of metrics that gives you genuine insight into firm health, trackable in a 15-minute weekly review without a CFO or dedicated finance staff.
Five metrics. That's it. Master these before adding anything else.
Why Most Small Firms Fly Blind
The pattern is predictable: a managing partner runs the firm on feel — busyness signals health, cash in the account signals profit. Real financial review happens at tax time, when the accountant delivers a surprise.
The problem isn't laziness. It's that the metrics legal software surfaces by default — total billed, total collected, hours worked — don't tell you why the firm is performing as it is, or what to fix.
A firm billing $50,000/month might be healthy or hemorrhaging, depending on what's happening to that $50,000 between billing and collection. The 5-metric dashboard below tells you.
Metric 1: Utilization Rate
Formula: Billable hours worked ÷ Total hours available × 100
What it measures: The percentage of attorney time spent on billable work versus administration, business development, and overhead.
Benchmarks:
- Solo attorney: 65–75% is sustainable. Above 80% indicates burnout risk.
- Associate: 75–85% target. Below 60% suggests capacity or workflow issues.
- Partner: 50–65% typical (business development and management reduce billable time).
What to do with it: Low utilization (under 55% for associates) usually signals one of three things: insufficient work volume, poor matter assignment, or too much non-billable overhead. High utilization (over 85%) signals a hiring or delegation problem — the attorney is doing work that should be delegated to staff or a junior.
Track per attorney, not just firm-wide. A firm average of 70% can hide one attorney at 90% and another at 50%.
Metric 2: Billing Realization Rate
Formula: Amount billed ÷ (Billable hours × Standard rate) × 100
What it measures: The percentage of worked hours that actually appear on an invoice. Billing realization below 100% means you worked hours you didn't bill — from write-downs, write-offs, or time not entered.
Benchmarks: 85–95% for small firms. Below 80% indicates a systematic problem.
Why it gets lost: Attorneys write down time for many reasons — the work took longer than it should have, the client seems price-sensitive, the matter was on a fixed fee but tracked hourly. These decisions are often made individually and inconsistently, creating invisible revenue loss that only shows up in aggregate.
What to do with it: A billing realization problem is usually a time-entry or write-down problem. Common fixes: bill more frequently (monthly versus quarterly reduces write-offs), require time entries within 24 hours of the work, review write-downs at the matter level before finalizing invoices.
Metric 3: Collection Realization Rate
Formula: Amount collected ÷ Amount billed × 100
What it measures: The percentage of billed amounts that are actually collected. This is distinct from billing realization — a firm can have excellent billing realization and terrible collection realization if clients don't pay their invoices.
Benchmarks: 90–98% for healthy firms. Below 85% indicates a collections process problem.
The critical distinction: Billing realization and collection realization identify different problems. A firm with 95% billing realization but 75% collection realization has a collections problem, not a billing problem. The invoices are going out correctly — they're just not getting paid. This requires a different fix (payment terms, follow-up process, client selection) than a billing realization problem.
What to do with it: Improve collection realization through: shorter payment terms (net 15 instead of net 30), automatic payment reminders at 7, 14, and 21 days past due, credit card on file for retainer replenishment, stopping work when invoices reach 60 days past due.
Metric 4: Lockup Days
Formula: (WIP days + AR days) — where WIP days = unbilled time ÷ (annual revenue ÷ 365), AR days = accounts receivable ÷ (annual revenue ÷ 365)
What it measures: How many days of revenue are tied up between when work is done and when cash is collected. This is the single most important cash flow metric for a law firm.
Benchmarks: Under 60 days total is healthy for small firms. 60–90 days is manageable. Over 90 days creates cash flow stress.
Why it matters: Lockup days translate directly to capital requirements. A firm with $100,000/month revenue and 90 lockup days has $300,000 perpetually tied up in unbilled work and uncollected receivables. A firm with 45 lockup days has $150,000 tied up — $150,000 that can fund hiring, technology, or working capital.
The two components: WIP lockup (time between doing work and billing it) and AR lockup (time between billing and collecting) require different interventions. WIP lockup is reduced by billing more frequently. AR lockup is reduced by improving collections processes. Track both separately to know which problem you're solving.
ROI of reducing lockup: Reducing lockup by 15 days on $100,000/month revenue frees $50,000 in working capital. That's typically 12–18 months of practice management software costs.
Metric 5: Lead-to-Client Conversion Rate
Formula: Clients retained ÷ Total inquiries received × 100
What it measures: The percentage of potential clients who contact your firm and actually retain you.
Benchmarks: 15–25% is healthy for most practice areas. Below 10% indicates an intake or pricing problem. Above 30% may indicate the firm is not selective enough about matter fit.
Why most small firms don't track this: Tracking conversion requires consistently logging every inquiry — including the ones that don't convert. Most firms only track clients retained, not inquiries received, making conversion rate invisible.
What to do with it: A low conversion rate is usually caused by: slow response time (the most common cause — see our intake automation guide), pricing mismatch (prospects expect a different price range), poor fit between marketing and actual practice areas, or inadequate follow-up for prospects who don't convert immediately.
The 15-Minute Weekly Review
These 5 metrics become actionable through a weekly review ritual. Suggested structure for a managing partner + admin:
- New inquiries this week (2 min): Count total inquiries, update conversion tracking
- Unbilled time review (5 min): Any attorney with more than 10 hours unbilled this week? Flag for billing this week, not next month
- Overdue AR (3 min): Any invoices past 30 days? Trigger follow-up sequence. Past 60 days? Attorney calls client directly
- Cash received this week (2 min): Running total against monthly target
- Utilization spot-check (3 min): Is each attorney on track for the week's billable target?
The full calculation of all 5 metrics happens monthly, not weekly. The weekly review keeps the leading indicators (unbilled time, overdue AR, new inquiries) from silently drifting.
One Metric You Should Not Track
Total hours billed is the metric most small firms track obsessively. It's the least useful of the common metrics because it doesn't tell you whether those hours were collected, at what rate, or how efficiently they were generated.
A firm billing 200 hours at $300/hour with 70% collection realization outperforms a firm billing 250 hours at $250/hour with 95% collection realization. Total hours billed misses this entirely. Billing realization × collection realization × rate × utilization tells the full story.
Getting Your Baseline
Before you can track trends, you need a baseline. Pull these numbers for the last 3 months from your practice management or billing software:
- Total billable hours worked vs. total available hours
- Total time entered vs. total billed
- Total billed vs. total collected
- Current WIP (unbilled time in dollars) and current AR (unpaid invoices)
- Total new inquiries vs. new clients retained
Calculate your 5 baseline metrics. They will almost certainly reveal one number that's worse than you expected. That's the metric to focus on for the next 90 days — not all five simultaneously.
The discipline of the 5-metric dashboard isn't tracking everything. It's knowing which one thing to fix next.