Here's a question most solo attorneys can't answer: what's your cost to acquire a new client? Not a guess. The actual number, calculated from real data.
If you don't know, you're in good company. Most solo attorneys track almost nothing about their practice beyond "how much money came in this month." That single number tells you whether you can pay rent. It doesn't tell you whether your practice is healthy, growing, or slowly bleeding out.
You don't need analytics software or a custom dashboard. You need 10 specific numbers, reviewed monthly, that tell you what's actually happening in your practice. Here are those numbers, how to calculate them, and what to do when they're heading in the wrong direction.
Why Metrics Matter for Solo Attorneys
The resistance to tracking metrics usually sounds like this: "I'm a lawyer, not a business analyst. I should be practicing law, not staring at spreadsheets."
Fair point. But consider this: every business decision you make — whether to hire a paralegal, whether to raise your rates, whether to invest in marketing, whether to take on a new practice area — is currently being made on intuition. Sometimes intuition is right. Sometimes it isn't. When it isn't, the consequences are slow enough that you don't notice until the damage is done.
Metrics replace guesswork with data. They don't have to consume your time. A monthly review of 10 numbers takes 30–45 minutes. That's less time than you spend on a single client intake. The return on that 45 minutes is dramatically better decision-making about your practice's direction.
The MLO position: you don't need fancy software to track these numbers. A spreadsheet works until you have 50+ active matters. At that point, your practice management software should generate most of these metrics automatically.
Metric 1: Revenue Per Matter
What it is. Total revenue collected divided by total matters closed, for a given period.
How to calculate it. Sum all revenue collected in the last quarter. Divide by the number of matters closed in that quarter. (Use "closed" rather than "opened" to avoid counting matters still generating revenue.)
What good looks like. This varies wildly by practice area. A criminal defense solo handling misdemeanors might see $1,500–$3,000 per matter. An estate planning attorney doing trust-based plans might see $3,000–$6,000. The absolute number matters less than the trend — is it going up, down, or flat?
What bad looks like. A declining revenue per matter over multiple quarters usually means one of three things: you're taking on lower-value work, you're underpricing, or scope creep is eating into your flat fees without being billed.
How to improve it. Raise rates, tighten scope definitions in engagement agreements, or shift your case mix toward higher-value matter types. For a deeper look at billing strategies, see billing for solo attorneys.
Metric 2: Utilization Rate
What it is. The percentage of your available working hours that are spent on billable work.
How to calculate it. Billable hours worked divided by total available hours. If you work 8 hours a day and bill 5.5 of those hours, your utilization rate is 68.75%.
What good looks like. For solo attorneys (who also handle business development, admin, and management), a utilization rate of 60–70% is healthy. Partners at large firms target 70–80%, but they have staff handling the non-billable work.
What bad looks like. Below 50% means more than half your working time is spent on non-billable tasks. That's either an administrative burden you need to delegate or automate, or it indicates insufficient client volume.
How to improve it. Track non-billable time by category (admin, marketing, accounting, general overhead) for one month. Identify the biggest non-billable time sinks and evaluate whether they can be automated, delegated, or eliminated. Common wins: automated appointment scheduling, template-based document generation, and outsourcing bookkeeping.
Metric 3: Realization Rate
What it is. The percentage of time worked that actually gets billed to clients. This accounts for write-offs, write-downs, and time that was worked but never invoiced.
How to calculate it. Total amount billed divided by total amount of time worked at your standard rate. If you worked 100 hours at $300/hour ($30,000 in value) but only billed $25,500, your realization rate is 85%.
What good looks like. 85–95%. Some write-offs are normal and even strategic (writing off time on a matter that ran long to maintain client goodwill). Below 85% means you're consistently working for less than your stated rate.
What bad looks like. Below 80% is a systemic problem. You're either over-staffing matters, doing work that doesn't belong on the bill, or failing to track time accurately.
How to improve it. Review your write-offs monthly. Are they concentrated on specific matter types, specific clients, or specific activities? Pattern recognition is the key. If you're consistently writing off research time, your research processes may need improvement. If specific clients always generate write-offs, re-evaluate those relationships.
Metric 4: Collection Rate
What it is. The percentage of billed amounts that actually get collected (paid by clients).
How to calculate it. Total payments received divided by total amounts billed, over a given period. If you billed $50,000 in Q1 and collected $44,000, your collection rate is 88%.
What good looks like. 90% or above. Top-performing solo attorneys collect 95%+ by combining upfront retainers, clear payment terms, and systematic follow-up.
What bad looks like. Below 85% means you're losing more than 15 cents of every dollar you bill. Over a year at $300,000 in billings, that's $45,000 left on the table — a significant amount for a solo practice.
How to improve it. Three levers: (1) collect more upfront (retainers, deposits, flat fee payments before work begins), (2) send invoices faster (weekly or upon matter completion, not monthly), (3) implement a systematic AR follow-up process (Day 15 reminder, Day 30 call, Day 45 escalation). For a complete collections system, see billing for solo attorneys.
Metric 5: Cost Per Client Acquisition
What it is. How much you spend, on average, to get one new paying client.
How to calculate it. Total marketing and business development spend divided by total new clients acquired, for a given period. Include everything: advertising, directory listings, networking costs, website costs, content creation costs, referral fees (where permitted), and the value of your non-billable time spent on business development.
What good looks like. This varies enormously by practice area and market. Personal injury attorneys in competitive markets might spend $500–$1,500 per acquired client but earn $5,000–$50,000 per case. An estate planning attorney getting referrals might spend $50–$100 per client. The number itself isn't the point — the ratio to revenue per matter is.
What bad looks like. If your cost per acquisition is approaching or exceeding 25% of your revenue per matter, your marketing is too expensive for your practice economics. Either reduce acquisition costs or increase matter value.
How to improve it. Track which marketing channels produce clients, not just leads. A channel that generates 50 inquiries but 2 clients is worse than a channel that generates 10 inquiries and 5 clients. Double down on high-conversion channels and cut low-performers. For channel-specific ROI data, see marketing for solo attorneys.
Metric 6: Lead-to-Client Conversion Rate
What it is. The percentage of leads (people who contact your firm) that become paying clients.
How to calculate it. New clients signed divided by total leads received. If you got 40 inquiries last month and signed 12, your conversion rate is 30%.
What good looks like. 25–35% for most solo practices. If you're highly selective or in a niche practice area, it may be lower by design. If you serve a high-volume practice area, it should be higher.
What bad looks like. Below 15% means you're spending time on consultations that rarely convert. Either your marketing is attracting the wrong people, your intake process is losing qualified leads, or your consultation process isn't converting interest into engagement.
How to improve it. Map your funnel: Where are leads coming from? What happens between first contact and signed engagement? Where do they drop off? Common leaks: slow response time (leads go cold after 24 hours), no follow-up after initial consultation, unclear pricing during consultation, and a cumbersome intake process. For intake optimization, see our guide on client intake.
Metric 7: Average Case Value
What it is. Different from revenue per matter, this measures the total lifetime value of a case including all related work, not just a single matter.
How to calculate it. Total revenue from a client relationship divided by the number of distinct engagements. A client who starts with a will ($2,000) and later returns for a trust ($4,500) has a case value of $6,500 across two matters.
What good looks like. Growing over time, which indicates you're building repeat client relationships and expanding services per client.
What bad looks like. Flat or declining, especially if your revenue per individual matter is also flat. That means you're not retaining clients or cross-selling related services.
How to improve it. At matter close, identify related legal needs the client may have. The estate planning client probably needs powers of attorney and healthcare directives. The business formation client will need an operating agreement, contracts, and eventually employment advice. Don't hard-sell — inform. "Now that your LLC is formed, you'll want an operating agreement. That's something we can handle when you're ready."
Metric 8: Referral Rate
What it is. The percentage of new clients that come from referrals (other attorneys, existing clients, professional contacts).
How to calculate it. Ask every new client how they found you. Track the responses. Divide referral-sourced clients by total new clients.
What good looks like. 30–50% from referrals is a strong indicator that your clients and professional network value your work enough to recommend you. Referral clients typically convert at higher rates and have lower acquisition costs.
What bad looks like. Below 15% suggests your current clients and network aren't referring to you. This could mean service quality issues, or simply that you're not making it easy for people to refer (they don't know what types of matters you want, or they forget about you).
How to improve it. Make referrals easy. Tell clients and referral sources exactly what kinds of cases you're looking for. Follow up on every referral with a thank-you (where ethical rules permit). Build genuine relationships with attorneys in complementary practice areas — the family law attorney who doesn't do estate planning, the business attorney who doesn't do employment law. Referrals are a two-way relationship.
Metric 9: Client Satisfaction (Net Promoter Score)
What it is. A standardized measure of how likely clients are to recommend you. The classic NPS question: "On a scale of 0–10, how likely are you to recommend our firm to a friend or colleague?"
How to calculate it. Send the NPS question to clients at matter close. Scores of 9–10 are "promoters." Scores of 7–8 are "passives." Scores of 0–6 are "detractors." NPS = % promoters minus % detractors. Range is -100 to +100.
What good looks like. An NPS above 50 is excellent for professional services. Above 70 is exceptional. Even a score of 30–40 puts you ahead of most law firms, which rarely measure satisfaction at all.
What bad looks like. Below 20 means a meaningful number of clients are not satisfied. Below 0 means more clients are detractors than promoters — a serious problem that's likely suppressing your referral rate.
How to improve it. The most common drivers of low satisfaction in legal services are (1) poor communication — clients didn't hear from you enough, (2) surprise billing — the final invoice was higher than expected, and (3) unclear process — the client didn't understand what was happening or what came next. All three are fixable with systems, not personality changes.
Metric 10: Monthly Revenue Trend
What it is. A 12-month trailing view of monthly collected revenue. Not a single month's number — the trend line.
How to calculate it. Plot your monthly collected revenue for the past 12 months. Look at the direction. Is it going up, down, or flat? Calculate the average and identify months that deviated significantly.
What good looks like. Steady growth of 5–15% year over year. Some seasonal variation is normal (many practice areas see slower months in summer and around holidays). The trailing 12-month average smooths out seasonality.
What bad looks like. A declining trend over 3+ consecutive months that isn't explained by seasonality. This is an early warning indicator — by the time revenue has declined for three months, the root cause (fewer leads, lower conversion, lower matter value) started 2–4 months before that.
How to improve it. Revenue is the downstream result of everything else on this list. If revenue is declining, don't look at revenue — look at the upstream metrics. Is lead volume down? Is conversion rate declining? Is matter value dropping? Revenue trends tell you something is wrong. The other nine metrics tell you what.
Setting Up Your Tracking System
You don't need analytics software. Here's a minimal system:
A spreadsheet with 12 monthly columns and 10 rows (one per metric). At the start of each month, spend 30–45 minutes filling in last month's numbers. Color-code: green for improving, yellow for flat, red for declining. That's your dashboard.
Data sources for each metric:
- Revenue per matter: your accounting system or bank statements
- Utilization rate: your time tracking tool
- Realization rate: compare time tracked to amounts billed
- Collection rate: compare amounts billed to amounts collected
- Cost per acquisition: sum your marketing spend, divide by new clients
- Lead-to-client conversion: your intake records
- Average case value: your billing records by client
- Referral rate: intake source tracking (ask every lead)
- NPS: a simple email survey at matter close
- Revenue trend: your accounting system
The first month is the hardest because you're establishing baselines. Don't worry about whether your numbers are "good" or "bad" initially. The value comes from seeing the trends over 3–6 months. A solo attorney with a 75% collection rate who improves to 85% over six months has effectively given themselves a raise — without billing a single additional hour.
The Monthly Review Ritual
Block 45 minutes on the first Monday of each month. Pull your 10 numbers. Update the spreadsheet. Ask yourself three questions:
- What improved? Identify what you did differently that drove the improvement. Do more of it.
- What declined? Identify the root cause. Is it a one-month anomaly or a trend? If it's a trend, it needs action.
- What's the one number I should focus on improving this month? Pick one. Not three. One. Direct your limited non-billable time at the metric with the biggest potential impact.
This isn't busywork. This is practice management. The attorneys who track these numbers consistently make better decisions about pricing, marketing, hiring, and growth. The attorneys who don't are flying blind — and wondering why some months feel great and others feel like they're going backward.
Start this month. Build the spreadsheet. Fill in what you can. The numbers you can't fill in today will tell you exactly what systems you need to build first.