A managing partner at a four-attorney firm proudly reports a $60 price per inquiry, the cheapest her firm has ever paid. Six weeks later her intake manager shows her the ledger: 112 inquiries, 9 consultations, 2 signed retainers. The real cost per signed case is $3,360, and nobody had been tracking it.
Most firms evaluate a client-acquisition partner by the number printed on the invoice. That number describes what you paid to receive an inquiry. It says nothing about what you paid to sign a client. The metric that belongs at the top of every provider scorecard is cost per signed case, and this guide explains how to calculate it, what drives it, and how to use it to decide which providers deserve a larger share of your budget.
Why Cost Per Signed Case Beats Price Per Inquiry
Price per inquiry is a procurement metric. It rewards the lowest unit cost regardless of whether the unit is any good. Cost per signed case is a growth metric: it divides total spend by retained clients, so every weakness in the chain, from poor targeting to slow follow-up, shows up in a single figure.
Consider two providers. Provider A charges $45 per inquiry and converts 2% of them into signed cases. Provider B charges $140 per inquiry and converts 12%. Provider A costs you $2,250 per signed case; Provider B costs $1,167. The “expensive” option is nearly half the price where it counts.
The formula: cost per signed case = (provider spend + the staff time you spend working those inquiries) ÷ number of signed retainers. Keep the denominator honest by counting only clients who actually signed.
How to Calculate Your True Cost Per Signed Case
Track four stages for every source: inquiries received, inquiries reached, consultations held, and retainers signed. Most case-management systems can tag the source at intake, and a shared spreadsheet works if yours cannot. Review the numbers monthly and never judge a provider on fewer than 30 inquiries, because small samples swing wildly.
Include the hidden costs
Add the paid minutes your intake team spends on unreachable or unqualified contacts, plus any consultation time that went nowhere. A provider that sends many unqualified contacts quietly taxes your staff even when its invoice looks small.
Weigh case value, not just case count
A signed case is not a fixed unit. A $2,000 cost per signed personal injury case may be an excellent return, while the same figure on a flat-fee uncontested divorce may not be. Compare cost per signed case against average fee or settlement contribution, and you have a true ROI figure.
Cost Per Signed Case: Provider Scorecard
The table below shows how the same budget produces very different outcomes depending on exclusivity, filtering, and speed of delivery.
| Metric | Traditional Approach | With TheLawyerLeads.com |
|---|---|---|
| Inquiry exclusivity | Shared with 3–5 firms | Exclusive to your firm |
| Practice-area filtering | Broad, self-reported | Filtered to your practice and geography |
| Speed to delivery | Hours to days | Real time |
| Typical inquiry-to-signed rate | 1–3% | Higher, tracked per source |
| Primary metric | Price per inquiry | Cost per signed case |
Key Insight
When two providers have similar inquiry-to-signed rates, the one with faster delivery and exclusive contacts almost always wins, because speed to first contact is the single biggest lever on conversion. Hold your own intake accountable first: a slow callback can make a good provider look bad.
Using Cost Per Signed Case to Allocate Budget
Once you have two or three months of data, rank every source by cost per signed case and reallocate. A practical rule: move spend toward sources performing in the best third, hold the middle, and put the bottom third on a 30-day improvement plan or cut it. Revisit quarterly, because performance shifts with seasonality and local competition.
Share the numbers with providers who are real growth partners. A good one will help you diagnose whether low conversion comes from targeting or from follow-up, adjust filters, and replace inquiries that fail agreed criteria. A provider that resists transparency is telling you something.
Fix intake before you blame the source
Audit your own funnel with the same rigor. If inquiries are reached in under five minutes and still do not convert, the source is the issue. If reach rates are low or callbacks take hours, your process is the bottleneck, and switching providers will not fix it.
One more practical habit: record why signed cases and lost consultations ended the way they did. A short note on each outcome, such as price objection, conflict, wrong practice area, or chose another firm, reveals patterns no spreadsheet total can. If most lost consultations cite the wrong practice area, tighter filters will lower your cost per signed case faster than any negotiation over price. If they cite another firm winning, your response speed deserves attention first.
Summary: Evaluating Providers on Cost Per Signed Case
- Stop using price per inquiry — it measures what you paid to receive contact, not to win a client.
- Track four stages per source — inquiries, reached, consultations, and signed retainers.
- Add hidden staff costs — unqualified contacts consume paid intake time.
- Compare against case value — the right cost depends on the fee a case produces.
- Reallocate quarterly — shift spend toward the best performers with at least 30 inquiries of data.
- Audit your own intake — speed and process affect results as much as the source does.
Build a Pipeline You Can Measure
Exclusive, real-time inquiries filtered to your practice area and geography, so your cost per signed case has a fair chance to prove itself.