Calculating the True ROI of Personal Injury Leads for Law Firms

True ROI calculation for personal injury leads needs to account for more than just cost-per-lead — case value, conversion rate, and the often months-long delay between signing a case and realizing the actual fee revenue all factor into a genuinely complete picture.

The Basic ROI Formula, Adjusted for Reality

Simple ROI calculations (revenue divided by cost) miss the time value consideration unique to contingency-fee practice — a case signed today might not produce revenue for a year or more, meaning cash flow timing matters alongside the raw ROI number.

Building a Complete Calculation

• Total lead source cost over a defined period.
• Number of cases signed from that source during the same period.
• Average case value and typical time to resolution for signed cases.
• Projected revenue, discounted for the delay between signing and payment.

Why This Matters for Comparing Sources

A lead source producing fewer but higher-value cases might show better true ROI than a higher-volume source with lower average case value, even if the second source shows a lower cost-per-lead on the surface.

Applying This Framework

Building this complete calculation into your regular reporting reveals which lead sources are genuinely producing the strongest long-term return for your firm.