How to Measure Time to Sign and Time to Settle by Lead Source at Your PI Firm

Two vendors. Same cost per case. But one returns revenue in 9 months and the other takes 15. That six-month gap is the difference between healthy cash flow and a firm that's perpetually waiting on settlements it already paid to acquire.

Time-to-sign and time-to-settle are the two timing metrics most PI firms never track by lead source. Time-to-sign is the days from lead arrival to signed retainer. Time-to-settle is the days from retainer to case resolution. Together, they tell you something cost per case cannot: when your firm actually sees a return on the dollars it spent today.

Defining the Two Metrics

Most firms collapse these into a single “case duration” number. That blended figure is useless for vendor decisions. The insight lives in the separation.

Time-to-sign is driven by your intake process, lead quality, and speed-to-contact. A disciplined intake team moves a qualified lead from first contact to signed retainer in 3 to 7 days. Firms without that discipline take 14 to 30 days — and lose 40% or more of viable leads before a retainer is ever sent.

Time-to-settle is driven by case complexity, treatment duration, litigation strategy, and opposing counsel. You have less control here. But this metric varies dramatically by lead source — and that variation has direct cash flow consequences.

Why These Are Financial Metrics, Not Operational Ones

Consider two vendors, both at $3,500 cost per signed case. Identical on paper. Now look at the timing:

Both vendors cost $3,500 per signed case. But Vendor A returns revenue in roughly 9.2 months from lead arrival. Vendor B takes 15.7 months. That's a 6.5-month gap in when your firm sees a return on each $3,500 invested.

At 20 cases per month, you're spending $70,000/month on acquisition. If that spend splits evenly between the two vendors, you're tying up roughly $455,000 in capital for six months longer than necessary — every year. That's not a rounding error.

How a 25-Day Difference in Time-to-Sign Changes ROI

Slow intake compounds in two directions at once. Most marketing directors only see one of them.

The first is lead waste. Leads that sit in an intake queue for 14+ days convert at dramatically lower rates. The prospect hired another firm. Their motivation faded. A lead that cost $300 to acquire returns $0.

The second is settlement clock delay. A case cannot progress toward resolution until the retainer is signed. Every day of intake lag is a day added directly to your time-to-revenue — before the case even starts.

That $252,000 annual gap is not hypothetical. It's the revenue lost when leads that cost real money to generate never convert — either because intake is too slow, or because a specific vendor's leads need a different approach than your standard workflow and nobody noticed.

Calculating Time-to-Sign by Lead Source

The math is basic subtraction. The hard part is capturing lead arrival timestamps and retainer execution dates in a way that stays connected to the original source.

Calculating Time-to-Settle by Lead Source

Time-to-settle is harder to measure because the data trickles in over months. A case signed in January 2026 may not settle until late 2026 or into 2027. You need a system that holds the attribution link across that entire timeline — not a spreadsheet that loses it.

What the Benchmarks Look Like

For PI firms spending $100K–$500K/month on lead generation, these are the typical ranges:

The vendor-level insight lives in the spread within those ranges. Your best source might be at 7 days and 9 months. Your worst might be at 21 days and 16 months. Cost per case says they're equivalent. Time-adjusted, one is dramatically more profitable.

Using These Metrics to Make Better Budget Decisions

With time-to-sign and time-to-settle by vendor, you can make three decisions that cost per case alone won't support:

1. Prioritize fast-converting vendors when cash flow is tight. Shift budget toward vendors whose cases resolve faster — even if their cost per case runs slightly higher. A $4,000 case that settles in 8 months puts cash in your firm before a $3,200 case that takes 16 months.
2. Identify intake problems by source, not by vendor blame. If Vendor C's leads consistently take 20+ days to sign while Vendor D's take 5 days, that may not be a lead quality problem. It may be a workflow mismatch — different call scripts, follow-up cadence, or rep assignment.
3. Calculate true annualized ROI. A vendor delivering $42,000 average settlements at 10 months produces a higher annualized return than one delivering $48,000 average settlements at 18 months. The math is straightforward. The hard part is having the data.

What Makes This Measurable

Most PI firms don't track these metrics by vendor because the formulas aren't the problem. Basic subtraction is easy. The problem is data continuity — keeping the link between a marketing source and a case outcome intact across 12 to 18 months of case lifecycle.

Spreadsheets handle this for a few dozen cases. They cannot maintain source attribution reliably across 200+ active cases from 5+ vendors with rolling settlement lag. The attribution link breaks. The insight disappears.

RevenueScale's case analytics layer maintains source attribution from lead arrival through settlement, automatically surfacing time-to-sign and time-to-settle by vendor, case type, and market — so you can see which sources deliver the fastest path to revenue, not just the cheapest path to a retainer.