When Is It Time to Fire a Lead Vendor? How to Make the Decision With Data

A vendor has been underperforming for five months. You've had the accountability conversation twice. The rep is responsive, the promises are sincere — and the cost per case is still 47% above your firm average. Next month's budget meeting is two weeks away.

This is where most PI marketing directors stall. The relationship has history. The replacement might not be better. And hope is cheaper than a hard conversation.

But every month you stay costs real money. If that vendor is pulling $30K/month at a cost per case 47% above your average, you're leaving tens of thousands of dollars in recoverable cases on the table. The question isn't whether to exit — it's knowing exactly when the data makes the call for you.

The Decision Framework

Vendor termination decisions come down to three factors: performance level, performance trend, and response to intervention. A vendor who is underperforming but improving is a different conversation from one who is underperforming, declining, and ignoring your data.

Factor 1 — Performance Level

Measure cost per signed case against your firm's blended average. Use a 90-day rolling window — one bad month isn't a pattern.

• 10–20% above firm average:Yellow flag. Have the accountability conversation. Set a 60-day improvement target.
• 20–40% above firm average:Red flag. Budget reduction is appropriate. Termination is the outcome if improvement doesn't materialize.
• 40%+ above firm average:Termination is likely the right decision unless there are compelling extenuating circumstances (new geographic market, unusual case type mix, etc.).

Factor 2 — Performance Trend

Direction matters as much as level. A vendor at 25% above your average but improving each month is a different situation from one at 25% above and still drifting higher. Pull six months of data and trace the line. Three questions to ask:

• Is cost per case moving up or down over the past three months?
• Is conversion rate improving or declining?
• Is rejection rate going up or down?

All three improving? Give it more time. All three declining? That's a structural problem, not a rough patch.

Factor 3 — Response to Intervention

This factor usually decides the timing. Once you've had the accountability conversation and set a clear improvement window, how the vendor responds tells you everything.

• Engages, explains, changes, and improves:Continue the relationship. Monitor monthly.
• Engages, makes promises, but misses the improvement target:The vendor can't deliver at your required level. Exit.
• Dismisses your data, disputes metrics without evidence, or goes silent:Exit immediately. A vendor who won't engage with data is not a viable partner, period.

The Four Clear Signals It's Time to Fire a Vendor

If you're unsure whether the data is telling you to exit, these are the definitive signals:

Signal 1: Cost Per Case Is 40%+ Above Your Firm Average for 90+ Days

At 40% above your average, you're paying $1.40 for every dollar of signed case another vendor could produce. On a $30K/month allocation, that's roughly $8,500/month in recoverable spend. Unless there's a specific strategic reason to hold (exclusive case type access, a geography you can't reach otherwise), the math doesn't support continued budget.

Signal 2: Rejection Rate Above 35% for Two Consecutive Months

One in three leads rejected means your intake team is burning hours on contacts that were never going to sign. The vendor isn't filtering against your criteria — and that cost is real even when it doesn't show up on an invoice. Two consecutive months at 35%+ is not noise. It's a sourcing problem the vendor isn't fixing.

Signal 3: Performance Has Not Improved After a Defined Accountability Cycle

You had the conversation. You set the target. You gave 60 days. The vendor missed it. That's the clearest signal of all — they either can't improve or won't prioritize your account. Either answer leads to the same place.

Signal 4: A Competing Vendor in the Same Channel Is Materially Outperforming

Two vendors. Same channel, same case types. One delivers cost per case 30–40% lower than the other — consistently, over three months or more. The math is simple: every dollar you leave with the underperformer is a dollar that could be scaling the winner.

How to Have the Exit Conversation

Don't ghost a vendor. Don't make it personal. A clean professional exit preserves the relationship for potential re-engagement and protects your reputation in the vendor community.

A script that works:

“[Vendor name], I wanted to reach out directly. We're ending our current contract at the close of the [notice period]. We've been tracking cost per signed case by vendor for the past 90 days, and your leads are running at $[X] against our firm average of $[Y]. After our conversation in [month] and the window we gave for improvement, we haven't seen the movement we needed. This is a budget allocation decision based on performance data. If your model evolves and you believe you can hit our targets in the future, we're open to revisiting.”

Direct. Data-grounded. Leaves the door open without any ambiguity about what's happening now.

What to Do With the Recovered Budget

An exit is a reallocation event, not just a cost cut. Before you make the call, know exactly where that spend is going. Three clean options:

• Scale budget with your top-performing existing vendor
• Pilot a new vendor at a defined allocation (typically 20–25% of recovered spend)
• Shift to an underfunded channel — Google LSAs, for example — that's already outperforming its current budget share

Having the next step defined before you make the call makes the transition clean and gives you something concrete to bring to your next budget conversation.

The Discipline That Makes This Decision Easier

Firms that track cost per case by vendor every month don't experience terminations as crises. They experience them as the logical outcome of a system that was always going to surface underperformance and require a response.

When the decision is data-driven and the standard was communicated to the vendor upfront, firing a vendor doesn't take courage — it takes following the process you already have. That's the difference between a firm with a vendor accountability system and a firm that's still hoping next month will be different.

RevenueScale tracks the data that makes vendor decisions clear: cost per case, conversion rate, and rejection rate by vendor — updated in real time. See how the vendor performance dashboard gives PI firms the data they need to manage their lead portfolio.