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How to manage an underperforming sales rep: diagnose the cause before the PIP (2026)

By the diffi teamUpdated September 29, 202613 min read

Short answer

Diagnose before you act. Pull seven numbers for the rep (activity, new pipeline, conversion by stage, deal size, cycle time, territory quality and time in seat) against the team median and the rep’s own past; the pattern points to one of four causes: a skill gap at one stage, effort that used to be there, a thin territory, or a role that does not fit. Fix that cause with a 30-day plan on one leading indicator and a weekly check-in. Move to a PIP only when the gap is specific, it has been coached once with a clear target, and the number did not move; check the process with HR first.

Is it the rep, or is it the environment?

Check the team before you check the rep. A quota-attainment analysis by SalesFit puts it plainly: “Quota miss is almost never a motivation problem. It is a structural problem in how roles, targets, or systems are designed.” Two of its three root causes, manager behavior patterns and quota-setting errors, sit with you.

Your own urgency is the other trap. A May 2026 coaching guide for exactly this situation names it: “The single biggest mistake managers make with underperforming reps is moving to action before they understand what’s actually causing the problem.” A tighter target, a call-volume push or an early PIP all skip the step that decides whether they will work.

The pattern decides. One rep under target is a rep question. Several is environment or hiring. Everyone is the plan, or your own cadence.

What data should you look at before the conversation?

Seven numbers per rep for the last two full quarters, each against the team median and the rep’s own earlier quarters. All come from standard Salesforce or HubSpot reports grouped by owner; the first pull takes about 30 minutes, later ones 10.

The diagnostic data checklist: seven numbers and what a low one usually means

Number	Where to get it	Compare with	What a low number usually means	What it is not
1. Activity (calls, emails, meetings per week)	Activity report by owner and week	Team median; the rep’s own last two quarters	Effort or priorities shifted, or admin ate the week	Poor logging; check one week by hand
2. New pipeline created (per month)	Opportunities or deals created, by owner	Team median; the ramp curve if newer	Prospecting has stopped, or the territory cannot produce it	A month spent closing one large deal
3. Conversion by stage	Opportunity History (Salesforce) or deal stage history (HubSpot)	Team median at each stage	A skill gap where the funnel narrows, or weak qualification a stage earlier	A stage the rep defines differently
4. Win rate and average deal size	Closed won and lost by owner, trailing 90 days	Team median in the same segment	Wrong accounts, discounting, or losing late to the same objection	A segment with smaller deals
5. Cycle time and days in stage	Cycle length on won deals; days in stage on open ones	Team median; over 1.5× the won-deal median in that stage is stuck	Deals stalling at one point, often with no decision-maker reached	The longer cycle of a larger segment
6. Territory quality	Accounts owned, share matching the ideal profile, inbound routed	Peers in the same segment	Thinner inputs than peers; coaching cannot fix this	Accounts the rep has never worked
7. Time in seat versus ramp	Start date; the team’s median months to a first full quarter at quota	The month-by-month curve of reps who made it	Nothing yet, if the rep is on the curve	A tenured rep on a new segment (a partial re-ramp is normal)

Read across the rows. The same analysis treats activity as a read on the present, and win rate and stage conversion as a read on next quarter. High activity with low conversion and low activity with normal conversion are different problems.

Tip

An illustrative example

Say the team median is 45 activities a week, 10 new opportunities a month and 40% conversion from discovery to proposal. Rep A logs 50, creates 11 and converts 18% past discovery. Rep B logs 22, creates 4 and converts 42%. Rep A has a discovery gap; listen to three discovery calls first. Use only calls recorded under your company’s recording policy and the consent rules where your reps and buyers are. Rep B’s funnel works and the inputs have gone; check the account list, then ask what changed before assuming effort.

Skill, will, territory or role fit: the decision tree

Work down in order; each step rules out the cheaper explanation first. Will is deliberately last. It is the diagnosis managers reach first and can prove least, and here it means one observable thing, effort that was there before and is not now. Treat the rep’s own explanation as data to test rather than the answer; the coaching guide notes that what a rep names as the problem is often not what is causing it.

Is the team missing too? Half or more of the team under target means the environment comes first. Coaching one rep inside a broken plan changes nothing.
Is the rep inside ramp? On the curve of reps who made it, coach the ramp and wait. Behind it on new pipeline, go to step 5.
Are the inputs there? Accounts, profile fit or inbound visibly thinner than peers’ is a territory problem; rebalance or reset the target before any coaching.
Is activity normal? If yes, step 5. Down against the rep’s own past while conversion on the deals worked stays normal is will as defined above. No report shows why; ask, change what you control, and agree an activity floor the rep sets. If the answer touches health, pregnancy or caregiving, involve HR before any target is set.
Where does the funnel narrow? Low new pipeline with normal activity is a prospecting gap. Conversion collapsing at one stage is a skill gap there; listen to three calls from that stage before naming it, and coach that stage rather than pushing volume into the same leak. Small deals or a long cycle with normal conversion is a qualification gap.
Does the gap survive coaching that worked for others? Coached twice on the same stage, did the work, still far below peers: that may be the wrong role. Strong at discovery and unable to close may fit an SDR, account-management or partner role better than a PIP.
Everything normal and the number still misses? Check deal timing (close dates pushed, deals slipped a quarter) and the quota math before concluding anything about the rep.

What do you say to the rep? A script that asks

Bring two or three numbers and one question. The conversation is your diagnosis said out loud as a guess, with the rep’s explanation heard first. The coaching guide opens with “Help me understand the challenges you’re facing.” before any observation is shared; the script below does the same, then gets to a number and a date; its numbers are Rep A’s from the illustrative example above.

Tip

A script for the first conversation

Open with the purpose and one observation. “I want to understand the quarter before either of us decides anything. One thing I see is discovery-to-proposal around 18% for you against about 40% for the team, with your activity above the team’s. I may be reading it wrong. What is your read?” Listen, then probe. “When you look at the deals that dropped after discovery, what do they have in common? Where do you feel least sure?” Offer your hypothesis as a guess. “My guess is the calls are not reaching a decision-maker before the proposal goes out. Does that match what you see?” Let the rep pick the change. “If you changed one thing on every discovery call for the next 30 days, what would it be? What can I take off your plate to make that possible?” Set the number and the date. “Let’s make that the one thing we look at weekly. If it has not moved in three weeks, we revisit the diagnosis together.”

Do not name a cause you have not tested. “You are not putting in the effort” is a conclusion about the person; “activity is down a third from your spring average” is an observation the rep can correct.
Keep it about the work. If the rep raises something personal, listen, point to what the company offers, and take it to HR before the plan goes further; some disclosures bring legal duties.
Do not end without a rep-owned action. The same guide closes on the one thing the rep will try differently this week. A change the rep picks gets owned; an assigned task gets complied with.

What does a 30-day plan before any PIP look like?

One diagnosed cause, one leading indicator, one support commitment from you, and a weekly 20-minute check-in. Thirty days is long enough for a leading indicator to move and short enough that a wrong diagnosis costs a month rather than a quarter. It is written in a shared document and it is not a PIP; calling it one changes how the rep hears everything after.

The 30 days, week by week

Day 0: the diagnosis in one sentence with a number, against the team and the rep’s own past, agreed with the rep.
Day 0: one leading indicator with a target (illustrative: a decision-maker reached on 8 of 10 discovery calls; activity back to the rep’s own average for four straight weeks; a rebalanced account list live by day 10), your support commitment, and four weekly check-ins in both calendars.
Week 1: deliver your part first (call reviews, the rebuilt list, the removed admin) and check the indicator is logged as you will measure it.
Weeks 2 and 3: 20 minutes each on the indicator and what got in its way; no quota talk.
End of week 3: no movement at all means revisit the diagnosis together. The quota-attainment analysis has the same rule for a stalled plan: revisit the diagnosis at three weeks rather than extend the plan.
Day 30: one of three outcomes, written down. It moved (drop the plan, keep the routine). It moved and the lagging number has not yet (allow one sales cycle). It did not move despite a sound diagnosis and real support (now a PIP can be justified).

How diffi helps

diffi is the automated version of the evidence pull on this page, though not of the diagnosis. It reads the sources you connect, Salesforce or HubSpot (read-only; it does not write to your CRM), the Slack public channels you pick, your calendar, the Gmail labels or Outlook folders you select (or the whole inbox if you select none), and the calls the visible “diffi Notetaker” bot joins, and keeps a file for every rep: a summary, a timeline across those sources, active signals, open actions and 1:1 prep. Signals such as performance risk and a coaching gap come with the evidence behind them, and from Salesforce data a win rate or open pipeline below the team median is flagged as one. Before each check-in you can ask for a rep’s win rate, cycle days, deals created and activity count, the team’s for comparison, what changed this week, and what was said on calls the Notetaker joined; answers link to their sources. The diagnosis, the 30-day plan and any PIP decision stay yours. Book a demo to see the person file on your team’s data.

See it on your own team

How long before a PIP?

Long enough to have diagnosed the cause, coached it once with a written target, and watched the number not move. That is usually one 30-day plan after a diagnosis, six to eight weeks from the first conversation, a sequence rather than a number of days. The quota-attainment analysis sets the same bar as three conditions for a PIP: a specific, measurable gap; at least one coached attempt with a clear target; and no movement after it. A PIP is the wrong tool in five cases.

The team is missing too. It documents a planning error as a personal failure.
The rep is inside ramp. Coach the ramp against the curve.
The cause is territory. Rebalance first; a PIP cannot fix inputs.
The cause is role fit. Have the role conversation instead, with HR involved early; a PIP everyone expects to fail helps no one.
No diagnosis and no coached attempt yet. Then the PIP is your first real conversation about the problem, and the rep will read it as a termination notice.

When the three conditions are met, the PIP takes the structure of the 30-day plan with a longer horizon (the sales PIP template has the 30/60/90-day version): one gap with a number, leading indicators measured weekly, your support in writing, both outcomes stated honestly. Documentation, notice periods and what must be offered before termination differ by country and company; check with HR or an employment lawyer in your jurisdiction before you start one, and have HR review the document first.

Frequently asked questions

How do you know if a sales rep is underperforming or just having a slow quarter?

Look at the leading numbers rather than the quota. A slow quarter shows normal activity, normal new pipeline and normal conversion with results that lag, usually because a few large deals moved, and next quarter’s pipeline looks healthy. Underperformance shows one of the seven numbers below the team median for two quarters, or falling against the rep’s own past, with next quarter’s pipeline thin as well. One quarter with a visible cause, such as a lost anchor deal or a segment change, is a slow quarter.

What are the most common reasons a sales rep underperforms?

Four, in the order to rule them out. The environment (a quota set too high, thin lead flow, an uneven territory), which shows up as several reps missing. A skill gap at one stage of the funnel, which shows up as conversion narrowing at that stage. Effort that used to be there, which shows up as activity down against the rep’s own past. And role fit, which shows up when the same gap survives coaching that worked for others.

How do you tell a skill problem from a will problem?

By what the data shows on the deals the rep does work. A skill problem shows normal activity and a funnel that narrows at one stage; the rep is doing the work and it is not converting. A will problem, meaning effort that was there before and is not now, shows activity down against the rep’s own past while conversion on the remaining deals stays normal. No report shows the reason for a will problem. You can only ask, and change what you control.

Should you put an underperforming sales rep on a PIP right away?

No. A PIP is justified when the gap is specific and measurable, it has been coached once with a clear target, and the target did not move. A quota-attainment analysis draws the line this way: “A PIP written without a diagnosis is a firing document. A PIP written from a real diagnosis is a coaching document.” Run a 30-day plan first, and check your company’s PIP process with HR before you start one.

How long should you give an underperforming sales rep?

One full 30-day plan after a written diagnosis, then a decision, which usually means six to eight weeks from the first conversation to a PIP decision, plus one sales cycle for the lagging number to follow a leading indicator that moved. Give a rep inside ramp the full ramp, and a rep on a rebalanced territory one sales cycle. Give no one an open-ended “let’s see how next quarter goes”; that is a decision not to decide.

What do you say to an underperforming sales rep?

Open with one specific number and a question rather than the quota and a conclusion. For example: “Discovery-to-proposal is around 18% for you against 40% for the team, while your activity is above the team’s. I may be reading it wrong; what is your read?” Then ask what the dropped deals have in common, offer your hypothesis as a guess to test, and close with one change the rep picks and a date you both look at it.

What should a manager do when a rep misses quota two quarters in a row?

Diagnose within the week rather than waiting for a third. Pull the seven numbers for both quarters, check whether the team missed too, and find which number moved first. If there has been no diagnosis and no coached attempt yet, the second miss is a management gap as much as a rep gap; run the 30-day plan now. If a diagnosed cause has already been coached with a written target and nothing moved, the three conditions for a PIP are met; involve HR before you write it.

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