Due diligence is the structured examination a buyer, investor, or lender performs before committing money. They check your finances, contracts, customers, technology, and legal position to confirm that reality matches your presentation. The scope, depth, and legal meaning of the process differ by country, deal type, and contract.
Diligence usually covers five areas: financial (numbers, taxes, debts), legal (company documents, ownership, disputes), commercial (customers, contracts, market), technical (product, code, infrastructure), and people (contracts, dependence on individuals). The other side sends a request list and you upload documents to a data room, which is simply a controlled shared folder.
Preparation decides how the process feels. An example. A request list contains 60 documents. If you have never organised them, collecting statements, contracts, and shareholder lists takes about three weeks, and you find contradictions while an investor watches. If you keep one folder updated every month, you answer the same list in three days. The fast version also shows that your reporting works, which counts as much as the documents themselves.
The most expensive findings are rarely dramatic. They are small inconsistencies: a shareholder list that does not match the contracts, a customer contract that was never countersigned, revenue booked in the wrong period, or a freelancer who built your core product with no written transfer of rights. Each one is easy to fix months in advance and awkward to fix during a deal.
Founders often assume diligence begins after a term sheet is signed. Informal checking starts at the first meeting, when someone compares the number on your slide with the number in your email from March. Keep one source of truth and use it everywhere.
Scope, duration, and legal consequences vary widely by country, deal type, and contract wording. Treat this entry as general orientation and get qualified local advice for an actual transaction.
