The law firm marketing KPIs that actually matter are the ones that connect spending to signed cases: cost per signed case, lead-to-consult rate, consult-to-retained rate, response time and revenue per case by source. Clicks, impressions, rankings and traffic are useful for diagnosing problems, but they don't tell you whether marketing is working. If your monthly report leads with them, you're reading the wrong page.
Here is a short list of the numbers worth tracking, how to calculate them, and what each one tells you to fix.
Vanity metrics vs. business metrics
A vanity metric can go up while your caseload goes down. A business metric can't.
Traffic is the classic example. A blog post about a celebrity divorce might bring in thousands of visitors from other states, none of whom will ever hire you. Rankings are similar: being third for a term nobody in your county searches is worth very little. Even "leads" can mislead if half of them are spam, job applicants and existing clients asking about their file.
None of these numbers are useless. They're upstream. Use them to explain why a business metric moved, not as proof that things are going well.
The core law firm marketing KPIs
Seven numbers cover nearly everything a solo or small firm needs to manage marketing.
| KPI | How to calculate | What it tells you |
|---|---|---|
| Cost per signed case | Marketing spend ÷ new signed cases (by source) | Whether a channel is worth funding |
| Qualified leads | Leads matching your practice area and service area | Whether targeting is right |
| Lead-to-consult rate | Consults held ÷ qualified leads | How well intake converts interest into meetings |
| Consult-to-retained rate | Signed cases ÷ consults held | How well consults, pricing and follow-up work |
| Speed to first response | Time from inquiry to first live contact | Whether leads are going cold |
| Answered-call rate | Answered new-client calls ÷ all new-client calls | Coverage gaps by hour and day |
| Fees per case by source | Fees collected ÷ cases, grouped by source | Which channels bring better matters, not just more |
Our insight on cost per signed case goes deeper on the first metric, and the legal marketing ROI guide covers how to turn these into return on spend. I won't repeat those here.
How to read the numbers together
Each KPI points at a different part of the funnel, so a drop in one tells you where to look.
Lots of leads, few consults
Usually an intake problem or a targeting problem. Check response time and answered-call rate first. If those are fine, look at search terms: you may be paying for "free legal advice" or "how to file for divorce without a lawyer."
Plenty of consults, few retainers
Look at the consult itself: who runs it, how fees are explained, whether there's follow-up for people who need time. Price may be the issue, or the leads may be early-stage shoppers.
Good conversion, high cost per signed case
The funnel works; the traffic is expensive. That's a bidding, keyword or channel-mix question, often one for whoever handles your Google Ads management.
More cases, flat revenue
Check fees per case by source. A channel can lift your case count while filling the calendar with small, time-consuming matters. In that situation, tighten keywords and landing pages toward the case types you actually want, even if volume drops a bit.
Illustrative numbers only. Say a firm spends $6,000 in a month on Google Ads and gets 60 qualified leads, 18 consults and 6 signed cases. Cost per lead is $100, but cost per signed case is $1,000. Cutting response time so that 24 leads become consults (with the same consult-to-retained rate) would mean 8 cases, and cost per signed case would fall to $750 without changing a single ad.
Track every KPI by source
A firm-wide average hides almost everything, so break each number out by marketing source.
Google Ads, Map Pack calls, Local Services Ads, organic search, referrals and directories often have very different conversion rates and case values. A directory might send cheap leads that rarely sign; referrals might sign at a high rate with no ad cost but depend on relationships you need to maintain. You only see that if each lead carries a source from first contact. Decide on a rule for attribution and stick to it. For most small firms, crediting the source of first contact is simple and good enough. Ask “How did you hear about us?” on every intake call too, because tracking data misses things like a referral who then searched your name on Google.
That's what call tracking for law firms and a proper intake CRM make possible, and offline conversion tracking sends the results back into Google Ads.
A monthly KPI review that takes 30 minutes
A short, consistent monthly review beats an elaborate dashboard nobody opens.
Pull the funnel by source
Spend, qualified leads, consults, signed cases. One row per source.
Check intake health
Answered-call rate and median response time, plus the most common "not retained" reasons.
Compare to the last three months
One month is noise. Look for a trend.
Pick one change
Not five. One fix to intake, one budget shift or one campaign change, then see what it does.
Can you see your cost per signed case by source?
If not, we'll review your tracking, intake data and ad accounts and show you which KPIs you can measure today and what's missing.
What about industry benchmarks?
Treat published benchmarks as rough context, not targets, because your own trend matters far more.
Conversion rates and cost per case vary enormously by practice area, city, fee structure and intake quality. A personal injury firm and an estate planning firm can't be judged by the same numbers, and two divorce firms in the same city can differ widely depending on how they run consults. Set baselines from your own first three months of clean data and work to improve them. Use these KPIs to build next year's law firm marketing plan.
Frequently Asked Questions
Cost per signed case, lead-to-consult rate, consult-to-retained rate, speed to first response, answered-call rate and fees per case by source. Together they show whether marketing spend is producing clients and where the funnel is leaking. Traffic, impressions and rankings are useful diagnostics but shouldn't be the headline of a marketing report.
Divide total marketing spend for a source and period by the number of new cases signed from that source in the same period. Include ad spend and management fees for a true figure. Because cases often sign weeks after the first contact, compare over longer periods, such as a quarter, rather than a single month.
There's no reliable universal number. Lead-to-consult and consult-to-retained rates vary widely by practice area, fee structure, market and how well intake is run. Rather than chasing a published benchmark, measure your own rates for three months, set them as your baseline and work on improving them one change at a time.
Monthly for the numbers and quarterly for strategy changes is a practical rhythm. Monthly reviews catch intake problems and broken tracking quickly. Budget shifts between channels are better decided on a quarter of data, since single months can swing widely, especially for small firms with low case volume.