Somewhere between a marketing qualified lead and a closed deal, most of the context about that lead disappears. If pipeline keeps stalling right after handoff and you can't point to exactly why, the problem is rarely your reps or your top of funnel volume. It's almost always structural, and it shows up in the same handful of places every time.
I spent the better part of a year picking apart our own marketing to sales handoff after watching qualified leads go cold for no obvious reason. The pattern repeats. Five specific signs show up long before anyone rewrites the SLA document or starts pointing fingers. Catch these early and you fix the handoff. Miss them and you keep writing SLAs nobody follows.
Sign one: sales re-qualifies leads marketing already scored
If your reps re-ask the same qualifying questions marketing already answered, your lead definitions aren't shared. They're just written down in two different places.
This is the most common failure I see, and it's invisible in your CRM. The lead record shows a clean MQL status, the score clears threshold, everything looks compliant. But listen to the first call recording and the rep opens with "so tell me about your team size and what you're using today," the exact fields marketing already captured on the form. When a rep has to rebuild context from scratch, they stop trusting the MQL label entirely, and within a few weeks they quietly start ignoring it and working their own list instead.
The fix isn't a longer form. It's making sure the lead's actual story, not just a score, travels with the handoff: what page pulled them in, what they clicked before converting, and what problem they described in their own words.
Sign two: your MQL to SQL conversion rate sits below 15%
Below 15% MQL to SQL conversion is a poor-tier benchmark for B2B SaaS. The 2026 range for average performers is 15 to 30%, top quartile companies land at 25 to 35%, and teams using behavioral rather than demographic scoring push into the high 30s and low 40s.
If you're under 15%, the honest read is usually one of two things: marketing is scoring on firmographics that don't predict intent (company size, industry, job title) instead of behavior (pricing page visits, repeat sessions, feature-specific content), or sales is accepting the SQL label without actually validating it, which just moves the problem downstream to a dead opportunity instead of a dead lead.
Pull the number before you touch anything else. It tells you whether you have a scoring problem, a follow-up problem, or both, and that determines which of the next three signs matters most for your team.
Sign three: nobody in the room agrees on what qualified means
Ask your head of marketing and your first sales hire to define a qualified lead out loud, separately, without comparing notes first. If you get two different answers, that gap is exactly where leads are dying.
This sounds obvious but almost nobody actually runs the test. Marketing tends to define qualified as fits the ICP on paper. Sales tends to define qualified as ready to have a real conversation right now. Both are reasonable and both are incomplete on their own, but when they're never reconciled into one written definition, marketing keeps optimizing for volume against its own definition while sales keeps discounting the leads that don't match theirs, and the two teams end up measuring success against numbers that were never actually the same number.
Sign four: response time quietly creeps past an hour
Companies that follow up with a sales qualified lead inside the first hour convert at roughly 53%. Wait past 24 hours and that drops to around 17%. The average first response time across B2B is still about 42 hours, which means most companies are leaving well over half their possible conversions on the table before a rep even picks up the phone.
Response time decay is rarely dramatic. It's a slow creep: fifteen minutes becomes forty, forty becomes ninety, and nobody notices because there's no alert, just a queue. If you haven't pulled a report on median time-to-first-touch in the last month, assume it has drifted and go check.
Sign five: marketing and sales report two different pipeline numbers
When marketing's dashboard says pipeline is growing and sales says the quarter feels soft, you don't have a reporting bug, you have a missing feedback loop. Marketing has no visibility into what happens to a lead after handoff, so it keeps reporting the only thing it can measure: volume and MQL count. Sales has no structured way to say this lead was never actually ready, so that signal just evaporates instead of feeding back into scoring.
Fewer than half of B2B companies have any formal SLA between the two functions at all, and even fewer have a two-way feedback loop where sales disposition data flows back into how marketing scores and sources leads. Without that loop, both teams are optimizing against incomplete information indefinitely.
What to check this week
You don't need a new SLA document to start. Run this in order:
- Pull median time-to-first-touch for the last 30 days and compare it to last quarter.
- Calculate your MQL to SQL conversion rate and compare it to the 15 to 30% average band.
- Ask marketing and sales leads to define "qualified" separately, then compare answers in the same meeting.
- Listen to two first-call recordings and check whether the rep re-asks anything already captured upstream.
- Set up one recurring feedback field sales fills in per lead: qualified, not qualified, or not yet, with a reason. Feed it back into scoring monthly.
That last step matters more than any of the others. A handoff without a feedback loop just repeats the same mismatch every quarter, no matter how well written the SLA document is.
Frequently asked questions
What is a good MQL to SQL conversion rate for B2B SaaS?
15 to 30% is average, 25 to 35% is top quartile, and above 45% is considered elite, typically achieved with behavioral rather than demographic lead scoring.
Do we need a formal SLA if we're a small team?
You need a shared definition of qualified and a response time target before you need a formal document. Write those two things down first, even in a shared doc, before building a full SLA.
How fast should sales respond to a new qualified lead?
Within the first hour whenever possible. Conversion rates roughly triple compared to waiting past 24 hours, and most of that advantage disappears after the first few hours.
Who should own fixing a broken lead handoff?
Whoever owns it, marketing ops, sales ops, or a shared RevOps function, the fix requires both teams in the same room defining qualified together. A one-sided fix from either side alone rarely holds.
What's the single fastest sign to check first?
Median time-to-first-touch. It's the easiest number to pull, it's usually already tracked in your CRM, and a creeping response time is often the earliest visible symptom of every other problem on this list.
None of these five signs require new tooling to check. They require pulling numbers you already have and having one honest conversation you've probably been avoiding. Do that before you write another SLA.