What GTM due diligence checks that commercial work misses

A target shows a revenue plan that grows 35% a year. The market study says the market grows faster than that. The financial work says the numbers are clean. Everyone relaxes. Eighteen months after close, the plan is 20% behind, and the reason is not the market or the books. The sales engine never had the capacity to do what the plan asked.

GTM due diligence exists for that gap. It tests whether a company's go-to-market machinery (forecast, pipeline, process, team, tooling and retention) can deliver the growth in the model.

What does commercial due diligence leave open?

Commercial due diligence looks outward. It sizes the market, maps competitors and tests the proposition with customers and experts. It is good at telling you whether demand exists and whether the company is well placed.

It is not built to inspect the machine that turns demand into revenue. Sales-process capability, the integrity of the forecast and the quality of the pipeline usually get a short management presentation and a few slides. Those are the places where growth cases most often break.

What does a GTM review actually test?

We score ten areas from 1 to 5. Each has a data test, not just an interview question.

• Forecasting: forecast against actual over four to eight quarters, and how much the number moves late in the quarter.
• Pipeline management: coverage after removing stale and overdue deals, stage ageing and slipped deals.
• Sales process rigour: stage definitions, qualification and discount discipline.
• Talent evaluation: quota attainment spread, ramp time and attrition.
• Sales and marketing tech stack: tool overlap, CRM data quality and reporting.
• Outbound: conversion from first touch to opportunity, and cost per meeting.
• Process and AI maturity: what is written down, what AI is in production, and how ready the data is.
• GTM operating model: segments, territories, roles and who owns each number.
• Function assessment: presales, customer, SDR, AE, enablement and marketing, each scored.
• Planning: whether the plan is built from capacity and evidence.

How do the data and the interviews work together?

The CRM tells you what happened. Interviews tell you why, and whether the people who run the engine see it the same way. We interview from the CEO down to the front line, 60 to 90 minutes each and never more than five in a day: CEO, CRO, CMO, customer success, two account executives, a development rep and a partner manager.

When the two disagree, that is the finding. A CRO who says forecasts are reliable while the records show 71% accuracy has told you something important about how the business is managed.

How do findings change the deal?

A finding only matters if it connects to price, structure or conditions. A pipeline that covers 1.8 times the target when the plan needs 3.0 times is not a footnote. It supports a lower price, a larger earn-out component, or a condition that the first 100 days fix pipeline generation before a growth hire wave.

For example, on a CHF 40 million deal, a revenue shortfall of 10% against the plan can change the multiple the buyer is willing to pay by more than a full fee for the review. A fixed fee for the review is small next to that.

When is a Health Check enough?

When you need a fast read on a company you already own, or on a portfolio company, a five-day GTM Health Check scores the same ten areas at sample depth: a four-quarter data extract and three conversations. When a deal is running and the answer will move price, Deal DD for GTM goes to full depth in fifteen working days.

Key takeaways

• Commercial diligence tests the market. GTM diligence tests the engine that has to capture it.
• Each area is scored from the numbers first and conversations second.
• Disagreement between the records and the people is itself a finding.
• Every finding should map to price, structure or a condition.
• A Health Check is the fastest way to see the whole engine; Deal DD is for when a deal is running.

Frequently asked questions

Does GTM due diligence replace commercial due diligence?

No. They answer different questions. Commercial work tests the market and the company's position. GTM work tests whether the sales engine can capture that market. They work well side by side.

How long does GTM due diligence take?

A Health Check takes five working days. Deal DD for GTM takes fifteen working days, which fits inside a typical four to ten week exclusivity window.

What data does the target need to provide?

A read-only CRM export, forecast snapshots for four to eight quarters, retention cohorts, an org chart and access to the interview list. The data-room request list has the full set.

Who is it for?

PE and VC funds before a deal, and CEOs directly or through their fund.