Exclusive and shared legal leads should be judged by signed cases and sustainable intake performance—not by lead price alone. This guide gives law firms a repeatable way to compare both models, calculate cost per signed case, identify the intake bottlenecks that change ROI, and decide what to ask before accepting a lead program.
Overview
In an exclusive lead program, a prospective client is generally offered to one law firm within an agreed market, practice area, or eligibility category. In a shared program, the same inquiry may be offered to multiple firms. The labels describe distribution, not necessarily quality. An exclusive lead can still be poorly qualified, and a shared lead can become a signed case when the inquiry is timely, relevant, and handled well.
The practical comparison is therefore an intake and conversion question:
- How many purchased leads become reachable conversations?
- How many conversations meet the firm’s case criteria?
- How many qualified prospects sign an engagement?
- What does each signed case cost after lead fees and intake labor?
Exclusive legal leads may reduce direct competition during the first contact, which can be useful when speed and personal follow-up are strengths. Shared legal leads may offer a lower acquisition cost or greater volume, but the prospect may be contacting several firms at once. Neither model should be evaluated from cost per lead alone. A lower-priced lead that requires many attempts and produces few qualified consultations may be more expensive than a higher-priced lead with stronger conversion.
For firms comparing attorney lead generation options, the most useful output is cost per signed case, supported by the intermediate rates that explain why the result occurred.
How to estimate
Use a simple funnel for each source and keep exclusive and shared programs in separate rows. Combining them can hide meaningful differences in contact rate, qualification, and signing behavior.
- Record purchased leads. Count only inquiries delivered under the program’s billing rules. Define whether duplicates, spam, wrong numbers, and outside-area inquiries are included.
- Measure the contact rate. Divide leads with a substantive two-way conversation by purchased leads. A voicemail, form submission, or unanswered call should not automatically count as contact.
- Measure the qualification rate. Divide leads that meet the firm’s stated criteria by contacted leads. Criteria may include jurisdiction, practice area, timing, conflict status, damages, budget, or another case-specific requirement.
- Measure the signed-case rate. Divide signed matters by qualified leads. Record the period used, because some cases sign after several follow-ups or after a consultation.
- Calculate cost per signed case. Divide total program spend by signed cases. Include intake fees, call handling, screening labor, and other directly attributable costs when those costs differ between sources.
The core formulas are:
Expected signed cases = Purchased leads × Contact rate × Qualification rate × Sign rate
Cost per signed case = Total attributable spend ÷ Signed cases
For planning, use expected cases rather than rounded whole numbers. For example, 100 leads × 60% contact × 50% qualification × 20% signing produces an expected 6 signed cases. The result is a planning estimate, not a promise.
A useful comparison worksheet has one row per source and these columns:
| Source | Leads | Spend | Contact rate | Qualification rate | Sign rate | Expected signed cases | Cost per signed case |
|---|---|---|---|---|---|---|---|
| Exclusive program | Enter actual | Enter actual | Contacted ÷ leads | Qualified ÷ contacted | Signed ÷ qualified | Leads × rates | Spend ÷ signed cases |
| Shared program | Enter actual | Enter actual | Contacted ÷ leads | Qualified ÷ contacted | Signed ÷ qualified | Leads × rates | Spend ÷ signed cases |
Inputs and assumptions
The quality of a law firm lead generation ROI calculation depends on consistent definitions. Before comparing vendors or channels, write down the assumptions that control the numbers.
Lead cost and total spend
Start with the invoice amount, then add costs that are specific to the program. These may include legal call intake, screening, appointment setting, software, or staff time. Do not add general overhead unless you apply the same allocation method to every channel. If a program includes a refund or replacement policy, record credits separately and explain when they are applied.
Lead identity and attribution
Use a unique lead ID, delivery timestamp, source, campaign, practice area, jurisdiction, and contact details. A client who first arrives through a lead service and later returns through an organic search visit should not be counted twice. Choose a primary attribution rule and apply it consistently.
Intake definitions
Define “contacted,” “qualified,” “consultation completed,” “retained,” and “closed.” A firm handling personal injury lead generation may qualify a matter using facts that differ from a firm handling family law leads, criminal defense leads, or immigration leads for lawyers. The funnel should reflect the practice area rather than use an imported benchmark.
Time window
Separate early performance from final performance. A lead may be unresponsive on day one and still schedule later. Track at least the first-contact result and the eventual disposition, using a consistent follow-up window appropriate to the practice area. Keep open matters in an “undetermined” category rather than treating them as failures or wins.
Compliance and client expectations
Review how consent, contact permissions, privacy notices, advertising disclosures, and lead records are handled. Confirm that the firm can see the information needed to evaluate the inquiry and that the proposed workflow fits applicable professional-conduct and advertising requirements. A vendor’s process does not remove the firm’s responsibility to supervise its marketing and intake practices. Have counsel review questions that depend on jurisdiction or practice area.
Ask providers whether leads are exclusive by geography, practice area, time period, or case type; how duplicates and invalid inquiries are handled; when a lead is considered delivered; what information is collected; how quickly it is transmitted; and whether the firm receives source and consent records. Ask for definitions rather than relying on labels such as “vetted” or “high intent.”
Worked examples
These examples use hypothetical inputs for demonstration only. Replace them with the firm’s invoice, staffing, and intake data.
Example 1: Exclusive leads
Assume a firm receives 80 exclusive leads at an assumed fee of $120 per lead. Program spend is therefore $9,600. The firm reaches 56 leads, qualifies 28 of those conversations, and signs 7 matters.
- Contact rate: 56 ÷ 80 = 70%
- Qualification rate: 28 ÷ 56 = 50%
- Sign rate: 7 ÷ 28 = 25%
- Cost per signed case: $9,600 ÷ 7 = approximately $1,371
If the firm adds $1,000 in directly attributable intake labor, total spend becomes $10,600 and cost per signed case becomes approximately $1,514. This illustrates why comparing invoice price alone can give an incomplete result.
Example 2: Shared leads
Assume the firm receives 160 shared leads at an assumed fee of $45 per lead, for program spend of $7,200. It reaches 80 leads, qualifies 24, and signs 4 matters.
- Contact rate: 80 ÷ 160 = 50%
- Qualification rate: 24 ÷ 80 = 30%
- Sign rate: 4 ÷ 24 = approximately 16.7%
- Cost per signed case: $7,200 ÷ 4 = $1,800
On these assumptions, the exclusive program has the lower cost per signed case even though its per-lead fee is higher. The conclusion would change if the shared program improved its qualification or signing rate, or if the exclusive program’s intake costs rose. That is why the worksheet should be updated with actual cohorts rather than used as a one-time vendor ranking.
Break-even planning
If the firm knows its allowable acquisition cost per signed case, it can calculate a maximum lead spend. For example, if the target is $1,500 per signed case and the expected signed-case rate from purchased leads is 5%, the maximum lead cost before other attributable costs is approximately $75: $1,500 × 5%. This is a planning threshold, not a market price or guarantee. Subtract intake and follow-up costs before setting the final ceiling.
When to recalculate
Recalculate when pricing inputs change, when benchmarks or internal rates move, or when the intake process changes. Specific triggers include a new lead fee, a different exclusivity territory, a revised replacement policy, a new answering service, a change in staff coverage, a new practice area, or a shift in geographic targeting.
Review performance by source at a regular operating interval and use completed cohorts when possible. Compare the same definitions, time window, and follow-up effort. If contact rate falls, investigate delivery speed, call routing, hours of coverage, and duplicate handling before concluding that the lead source has weakened. If qualification falls, examine targeting and the firm’s screening criteria. If signing falls while qualification remains stable, review consultation quality, fee communication, conflicts workflow, and follow-up.
For a practical next step, create a shared intake report with these fields: lead ID, source, delivery time, practice area, jurisdiction, first response time, contact result, qualification result, consultation date, disposition, signed date, refund status, and attributable cost. Run the exclusive and shared calculations separately, then review the three largest losses in the funnel. Improve one operational step—such as response routing or qualification questions—before increasing volume. Recalculate after the next comparable cohort and keep the assumptions beside the results so future pricing or conversion changes can be evaluated quickly.
