GTM due diligence explained in two minutes
What GTM due diligence is, who orders it, what evidence it uses and what comes out. A plain-English explainer for CEOs, founders and fund associates.
By Semir Jahic
/ 8 min read
GTM due diligence is an independent check of a company's sales and marketing engine, run on the company's own records, to test whether it can deliver the revenue plan. GTM stands for go-to-market: everything a company does to find customers, sell to them and keep them. If you are buying a company, funding one or running one, you have seen the accountant check the numbers and the lawyer check the contracts. The sales engine rarely gets the same inspection. Yet revenue growth accounted for 71% of the value created in 2024 exits, up from 64% in 2023, according to Moonfare's 2026 private equity outlook. What follows is the plain-language version.
What is GTM due diligence?
GTM due diligence is a structured inspection of how a company wins and keeps revenue. It looks at the forecast, the pipeline, the sales process, the team, the tools and the plan, and asks one question: can this engine produce the growth the plan promises? The answer is scored, evidenced and written down.
Think of a house survey. The price is agreed and the solicitor has checked the title, but the surveyor still goes into the roof, because a leak found now costs less than one found after moving in. GTM due diligence is that survey for the sales engine.
The term is new because the need is new: private equity returns now come mostly from revenue growth, not from debt and multiples, which makes the sales plan the investment case. Why GTM due diligence matters now sets out the data behind that shift.
What is GTM due diligence not?
GTM due diligence is not market research, not a customer survey and not a sales training programme. It does not estimate how big the market is; that is commercial due diligence. It does not phone 200 customers to ask whether they like the product. It does not coach the sales team or rewrite the pitch.
Nor is it a performance review of named people. Talent evaluation, one of the ten areas, scores how the team is built: quota attainment, ramp time and attrition, not individuals.
And it is not a management presentation with a second opinion attached. Scores come from the records first and the conversations second, and where the two disagree, that is the finding.
Who orders GTM due diligence, and when?
Investors and chief executives order it, at five moments. Private equity and venture funds order it before a purchase, inside the exclusivity window (the weeks in which the seller talks to one buyer only), when the price rests on a growth plan nobody has tested. The same funds order it after a purchase, across portfolio companies, to see which engines are sound and which are not.
Chief executives order it at three further points. After a missed quarter, when the board wants to know what to fix first. When a new head of sales starts and wants a baseline not written by the person they replaced. And six to eighteen months before a sale or funding round, because the buyer's team will open the CRM.
Missing the plan is common. In Bain's 2026 B2B Growth Agenda, a survey of more than 1,100 senior executives, 42% fell short of their 2025 growth goals, up from 32% in 2024.
What evidence does GTM due diligence use?
Two kinds: the company's own CRM records and interviews with the people who run the engine. The CRM (the customer relationship management system, where every sales opportunity is logged) supplies at least four quarters of opportunities with stage history, forecast snapshots where they exist, the customer list and retention by cohort. From those records, pipeline coverage, forecast accuracy, win rates and retention are rebuilt rather than read off a slide.
The interviews run from the chief executive to the front line: three to five conversations of 45 to 90 minutes for a GTM Health Check, and one to two interview days for a Deal DD. The records say what happened. The people say why, and whether they see it the same way.
A read-only export is enough; nobody needs access to the live system. Reluctance to share one is itself information.
What comes out of GTM due diligence?
Four things: a scorecard, the reasoning behind it, a 100-day plan and benchmarks. The scorecard covers ten areas, each scored 1 to 5 against written anchors: Forecasting; Pipeline management; Sales process rigour; Talent evaluation; Sales and marketing tech stack; Outbound; Process and AI maturity; GTM operating model; Function assessment; Planning. A 1 or 2 is a risk to revenue, 3 holds but needs work, 4 or 5 is a strength. The method page explains each area.
The scores guide a verdict, which the operator decides: Proceed, Adjust or Stop for a deal. For a chief executive looking at their own company the same bands read On track, Needs work or At risk.
Under every score sits the evidence: what the records show, what the people said and where they differ. The 100-day plan turns the findings into five to eight actions, each with an owner and a measure. Benchmarking sets the key ratios against public SaaS medians, with the source named. The sample report shows the whole shape on an illustrative company.
How does it differ from commercial and financial due diligence?
Financial due diligence asks whether the historical numbers are true. Commercial due diligence asks whether the market and the company's position support the plan. GTM due diligence asks whether the sales engine can capture that market. All three can run side by side on one deal, and none replaces another.
| Financial due diligence | Commercial due diligence | GTM due diligence | |
|---|---|---|---|
| Question answered | Are the historical numbers true? | Is the market big enough, and is the company well placed in it? | Can the sales engine deliver the plan? |
| Evidence | Accounts, ledgers, contracts | Market data, customer and expert interviews | CRM records for four or more quarters, interviews from CEO to front line |
| Who does it | Accountants, usually a Big Four firm | A strategy firm or specialist boutique | An operator who has run a revenue function, with AI doing the counting |
| Typical length | Runs across the exclusivity window | Runs across the exclusivity window | Five to fifteen working days |
What GTM due diligence checks goes deeper on what the commercial work leaves open.
How long does GTM due diligence take?
Five working days for a GTM Health Check and fifteen for a Deal DD for GTM. The Health Check covers all ten areas at sample depth, a four-quarter extract and three to five conversations, and takes 4 to 8 hours of the team's time. Deal DD goes to full depth on eight quarters with one to two interview days. A Health Check costs CHF 8,000 and a Deal DD CHF 20,000, both fixed before work starts.
The scorecard lets you rate the ten areas yourself in a few minutes before talking to anyone. If you would rather talk it through, book 30 minutes with me and bring the question that worries you most.
Key takeaways
- GTM due diligence tests whether a company's sales engine can deliver its revenue plan.
- It is not market sizing, not a customer survey and not sales training.
- Investors order it before and after a purchase; chief executives after a missed quarter, when a new sales leader starts or before a sale.
- The evidence is the company's own CRM records plus interviews from the chief executive to the front line.
- The output is ten scores from 1 to 5, a Proceed, Adjust or Stop verdict, the evidence, a 100-day plan and benchmarks.
- It takes five to fifteen working days and sits beside, not instead of, commercial and financial work.
Frequently asked questions
What does GTM stand for?
Go-to-market. It covers everything a company does to find customers, sell to them and keep them: marketing, sales development, account executives, presales, customer success and the tools and data underneath. GTM due diligence checks that whole chain rather than one team.
Is GTM due diligence only for private equity?
No. Private equity funds order it before a deal, venture funds use it across portfolio companies and chief executives order it on their own company. A Health Check gives a chief executive the same ten scores, read as On track, Needs work or At risk.
Does the company have to give access to its CRM?
No. A read-only export of opportunities with stage history is enough, with forecast snapshots and the customer list if they exist. Nobody logs into the live system. If data is missing, the affected scores are capped and listed as not tested.
What is a good score?
Ten areas score 1 to 5 each, so the total runs from 10 to 50. A total of 36 or more reads as Proceed, 26 to 35 as Adjust and 25 or below as Stop. The thresholds are working figures, and a 1 on Forecasting, Pipeline management or retention caps the verdict at Adjust.