A prospect sees your TV commercial during the evening news. Three days later, they're in a minor car accident. They remember your firm, type your name into Google, click your branded search ad, and call the tracked number. Your CRM records it as a Google Ads case.
Was it? Google captured the conversion. But TV generated the demand. Your attribution model decides which channel gets credit — and that decision directly shapes where your next $50,000 in marketing budget goes.
Most PI marketing directors have never consciously chosen an attribution model. Their CRM chose it for them. The default is almost always last-touch: whatever channel the prospect used to initiate contact gets full credit for the case. For firms running TV, radio, billboards, and direct mail alongside Google and Facebook, last-touch attribution systematically misprices your entire channel portfolio.
This guide explains the three attribution models, what each one gets right and wrong for personal injury marketing, and the practical approach that gives you a more accurate picture of where your signed cases actually come from.
PI Cases With Multiple Channel Touchpoints
55–70%
Prospects spending $100K+ monthly with TV, radio, or billboard typically show multi-channel paths before signing
Google Ads Credit Inflation Under Last-Touch
20–40%
At firms running mass media, Google Ads receives credit for cases mass media built — last-touch misses the source
PI Firms Using First-Touch Data in Budget Decisions
<10%
Most firms default to last-touch exclusively and never measure how cases were first generated
What Attribution Models Are (and Why They Matter)
An attribution model is a rule that determines which marketing channel receives credit when a prospect converts to a signed case. If a prospect interacted with three channels before signing, the attribution model decides how to distribute — or concentrate — that credit.
Attribution matters because credit drives dollars. The channel that gets credit for signed cases is the channel that gets more budget next month. Mis-attribution is not a reporting problem — it's a budget allocation problem. PI firms spending $200K per month that consistently over-credit Google Ads and under-credit mass media will eventually defund the channels that are actually building their case pipeline.
The Three Attribution Models Every PI Marketing Director Should Know
| First-Touch | Last-Touch | Linear (Multi-Touch) | |
|---|---|---|---|
| Which channel gets credit? | Channel that first introduced the prospect | Channel the prospect used to make contact | All touched channels, equally weighted |
| CRM default? | Rarely | Almost always | Requires setup |
| Best for measuring | Brand & awareness channels (TV, radio, billboard) | Digital conversion channels (Google Ads, web forms) | Full-funnel portfolio efficiency |
| Biggest risk for PI | Ignores the channel that closed the case | Credits digital for demand mass media built | Complexity — few CRMs support it natively |
| Setup required | Intake first-heard question | CRM default | Custom tracking |
| Practical for PI firms? | Yes — as a secondary view | Yes — primary view | Yes — with RI platform |
How each model distributes credit when a prospect touches multiple channels before signing
Last-Touch Attribution: The Default and Its Flaw
Last-touch attribution is how your CRM probably works right now. Every call tracking number, UTM parameter, and CRM source field captures the final channel a prospect used before contacting your firm. That's the channel that gets the case assigned to it.
For digital-only marketing portfolios, last-touch works reasonably well. If your entire budget is in Google Ads, Facebook, and lead aggregators, the last digital interaction usually is the primary driver. But PI firms spending on TV, radio, billboards, and direct mail operate on a different funnel dynamic. Mass media creates awareness. Digital channels capture the demand that mass media built. Under last-touch attribution, digital gets all the credit.
The practical result: TV and radio appear to produce few cases at high cost while Google Ads appears to produce cases efficiently at low cost. Managing partners cut mass media budgets. Google Ads budgets grow. Six months later, the Google Ads impression share stays stable but signed case volume drops — because the brand awareness that drove branded searches disappeared.
First-Touch Attribution: What It Captures (and What It Misses)
First-touch attribution credits the channel that first introduced the prospect to your firm. If they saw your billboard before anything else, the billboard gets credit. If they heard your radio ad before searching Google, radio gets credit.
This model is essential for understanding which channels are generating demand. A TV campaign that reaches 400,000 viewers monthly but produces only 60 attributed cases under last-touch might show 180 first-touch attributed cases — because another 120 prospects searched Google or called after seeing the TV ad, and last-touch gave those cases to Google. First-touch reveals the demand-generation picture that last-touch hides.
The limitation: first-touch ignores the channels that actually converted prospects into callers. A prospect who first heard your radio ad three months ago but only called after being retargeted by a Facebook ad might not be fairly attributed to radio alone. First-touch over-credits awareness channels for cases that required a digital nudge to close.
How Attribution Model Choice Changes Your Budget Decisions
The channel cost-per-case numbers a PI marketing director reports to their managing partner depend entirely on which attribution model produced them. Consider a firm spending $250,000 per month across TV, Google Ads, Facebook, and radio, signing 50 cases. Under different attribution models, the budget conversation looks different.
Illustrative example: same 50 signed cases, different attribution model, different channel costs. Numbers are directional — your firm's results depend on channel mix and prospect journey data.
Under last-touch, TV and radio look expensive and Google Ads looks efficient. Under first-touch, TV and radio look competitive and Google Ads looks expensive — because Google is capturing intent that mass media generated. Neither picture is fully correct. But most PI firms are making million-dollar budget decisions based on the last-touch picture alone, never seeing the first-touch reality.
The PI-Specific Attribution Problem: Long Consideration Windows
Personal injury attribution is harder than most industries for one structural reason: injury events don't always create immediate legal action. A prospect who hears your radio ad in January may not call until March, after their injuries don't resolve and their insurance company lowballs them. During those two months, they may have searched your firm name, visited your website, seen a Facebook retargeting ad, and driven past your billboard.
Which channel gets credit? Under last-touch, whatever they were doing when they finally dialed. Under first-touch, the radio ad from January. Neither fully reflects the multi-month journey. This is why the best PI firms use dual-view attribution: last-touch as the primary operating metric and first-touch as a strategic check on brand channel performance.
The intake team is also a factor. A prospect who calls from an organic Google search after seeing your TV commercial all week will often self-report TV as their primary reason for calling — but your call tracking system logs it as organic search. This gap is the practical reason why the intake source question matters more than most PI firms realize.
The Practical Attribution Approach for PI Marketing Directors
You don't need a sophisticated multi-touch attribution platform to get a more accurate picture. Two parallel practices give most PI firms 80% of the clarity they need.
Use last-touch as your primary operating metric.Keep your CRM source tags, call tracking numbers, and UTM parameters working as they do today. Last-touch is your signed-case count per channel — the number that goes into your monthly report and your cost-per-case calculation. It's not perfect, but it's consistent and reproducible.
Add a “first heard about us” field to every intake conversation. Separate from the lead source field your call tracking system populates, add a second intake field: “Before you called today, how did you first hear about our firm?” Give intake specialists a dropdown: TV, radio, billboard, internet search, friend or family referral, social media, direct mail, other. This field captures first-touch data at zero additional cost. It doesn't require a new platform or data engineering project. It requires two weeks of intake training and a form field update in your CRM.
Once you have 60–90 days of dual data, compare it. If last-touch shows Google Ads producing 25 cases and first-touch data shows 12 of those callers self-reporting TV or radio as their first introduction, you know your mass media channels are driving significant demand that Google is capturing. That insight changes your budget conversation.
Single Attribution View (Last-Touch Only)
- TV and radio appear to produce few cases at high cost per case
- Google Ads appears efficient because it captures branded and direct searches
- Mass media budgets face cut pressure based on apparent poor performance
- Managing partners see no evidence that brand channels are generating demand
- Budget shifts toward digital — lead volume eventually drops as brand awareness erodes
Dual Attribution View (Last-Touch + First-Touch Intake Data)
- TV and radio first-touch attribution shows true demand-generation contribution
- Google Ads credit adjusted — some cases credited back to mass media that drove the initial search
- Mass media budget defended with first-touch case counts alongside last-touch digital data
- Managing partner sees full picture: which channels create demand vs. which close it
- Budget decisions use both metrics — optimizing for the full funnel, not just the last click
Connecting Attribution to Your Revenue Intelligence View
Attribution modeling becomes most powerful when it's connected to signed case data, not just lead data. A first-touch attribution view based on intake questioning tells you which channels generate cases. When you connect that to settlement outcomes six to eighteen months later, you can ask a more powerful question: which channels generate the cases that settle at the highest value?
A radio campaign that looks expensive on last-touch cost per case might be generating a disproportionate share of your high-value truck accident and catastrophic injury cases — cases that settle at three to five times your average. First-touch attribution surfaces that relationship; last-touch hides it entirely.
See how this works across your full channel portfolio in the marketing ROI dashboard or explore how intake performance data connects to source attribution at a case level.
Most PI marketing directors are one intake field and one reporting session away from understanding their attribution blind spot. The firms that see both the last-touch and first-touch picture make better budget decisions and defend their mass media investments with data instead of instinct.
If you want to see how RevenueScale surfaces first-touch and last-touch attribution side by side — connected to signed cases and settlement outcomes across all your channels — book a demo. We'll show you what both attribution views look like for your current channel mix.