Due diligence rarely uncovers new problems. It surfaces the ones that are already there. Here’s what investors actually test, and how to get your company ready in time.
Most founders think due diligence is something that happens when a deal is underway. In reality, due diligence is an audit of how you’ve run the company over the last 2-3 years.
It doesn’t create problems. It exposes the ones that are already there. If you only start structuring the finance function when the buyer shows up, it’s too late.
Here’s what investors actually test for, and how to put yourselves in a position where due diligence doesn’t pull value out of the deal, but confirms it.
Due diligence isn’t a search for flawless perfection. It’s a test of two things: consistency and traceability.
Every serious investor or buyer fundamentally asks three questions.
Can you explain every single difference between what you say you’ve earned and what’s actually in the account? If yes, that speaks for you. If you need to bring in a consultant to make the numbers add up, that speaks against you.
Contract → invoice → payment → ARR figure. It has to be traceable all the way. If the ARR figure in your investor presentation doesn’t match what’s in the books plus what’s on its way in, you have a problem.
If the NRR definition changed between Q1 and Q3, the comparison is meaningless. Investors get more skeptical about a definition change with no explanation than about a number that simply goes down. The first sounds like hidden bad news.
If the answers require manual explanation, spreadsheets only one person understands, or excuses like “we changed how we calculated it last year”, then you’re not ready.
It’s not that investors expect perfection. It’s that every inconsistency tells them something about how the company is run in general.
When I step into a SaaS company facing due diligence or preparing for a funding round, these are the four patterns I see again and again.
The founder says DKK 24M. The bookkeeper reports DKK 22.8M. The difference is contracts signed late, cancellations not booked, and discounts given without being in the system.
“Active user” meant one thing in 2024 and something else in 2025. The trend figures between the two years compare apples to oranges.
The sales system says 15 closed deals in Q3. The finance system has 13 invoiced contracts. Where are the last 2?
When the investor asks about retention in the 2023 cohort, you can’t answer because you only started measuring systematically in 2024.
All of these gaps can be closed, but not in two weeks. It typically takes 6-12 months to clean up the history.
Define your core metrics in writing: ARR, MRR, churn, NRR, CAC, LTV. Write down exactly what’s counted and what isn’t. Get the document approved by the owner, the sales lead, and finance.
Every unit of ARR must be traceable back to the underlying contract. Which customer does it come from? When was the contract signed, invoiced, and paid? Which NRR movement is it part of?
Every month, sales data, finance data, and product data must be reconciled. Deviations are explained and documented. Not exciting, but exactly what due diligence rewards later.
If you’ve only measured cohorts for the last 12 months, rebuild the last 24-36 months from raw invoice data. It takes time, but it has been done before.
When investors ask for the data room, it should contain documented definitions, cohort analyses, a model with assumptions, and a historically reconciled set of accounts. Not 40 Excel files.
If you can answer yes to all five, you’re well on your way. If not, you know exactly where to start.
The best preparation isn’t building a big due diligence effort right before a deal. It’s building a finance function that could always stand up to scrutiny, so due diligence becomes a confirmation of what’s already there, not a rescue.
If you’re 6-12 months from an important milestone, now is when you should start. If you’re 1-3 months away, it’s mainly about minimizing the damage and creating consistency going forward.
30 minutes. We’ll work out what needs to be in place before you’re ready for due diligence.
