Due Diligence Prep: The Financial Documents Every Investor Will Ask For

What they'll ask for

A standard financial due diligence request list includes: two to three years of audited or reviewed financial statements (or tax returns if not audited), monthly P&L and balance sheets for the current year, accounts receivable and accounts payable aging reports, a cap table and all equity documentation, all material contracts including customer agreements and vendor agreements, payroll records and headcount history, and bank statements for the most recent 12 months.

A standard Series A due diligence request list includes: three years of financial statements (P&L, balance sheet, cash flows), bank statements for the same period, trial balance, tax returns, capitalization table, customer contracts, employment agreements, board minutes, stock option plan and grants, major vendor contracts, any debt instruments, and sometimes operating metrics like cohort retention and customer lists.

For later-stage rounds (Series B and beyond), add: audited or reviewed financials, detailed customer contracts with revenue recognition analysis, gross margin by product or segment, quality-of-earnings analysis, and management-prepared commentary on key metrics. The level of detail grows with the check size.

Organising your data room

A data room is a secure digital space where you store and share due diligence documents. Services like Dropbox, Google Drive, or dedicated platforms like Carta or Intralinks work well. Organise documents by category - financials, legal, HR, contracts - with a clear naming convention. Reviewers who have to hunt for documents become frustrated; frustrated reviewers ask more questions.

Data room organization is a diligence signal. Investors pattern-match on how well-organized the documents are - it reflects how the company is operated. A data room with clear folder structure, named files, and a brief README explaining what is in each folder reads as "this is a well-run business." A data room with "final_v3_REAL.pdf" and ambiguous filenames reads the opposite way.

A standard folder structure: Financials (statements, budgets, bank), Corporate (formation, bylaws, board), Cap Table, Contracts (customer, vendor, employee), Legal (IP, litigation if any), Operating (metrics, product docs). Within each, subfolders by year or type. A one-page index document at the top explains what is in each folder and who to contact for questions.

Pre-empting the most common questions

The questions that come up most frequently in financial due diligence are: what's the revenue concentration (what percentage comes from your top 3-5 clients), what are the contract lengths and renewal rates, what are the key cost drivers and how do they scale, and what are the off-balance-sheet items (commitments, contingencies, related-party transactions). If you know your answers to these before due diligence starts, you're ahead.

The most common questions in diligence: what exactly is your revenue (break down by segment, customer, geography, contract type), how did revenue recognize versus cash (bookings, billings, revenue, cash), what is the actual churn rate by cohort, what is concentrated in the top 10 customers, and what commitments are off-balance-sheet. Having answers ready for these saves weeks.

For each question, prepare a short written answer plus the supporting calculation or document. "Customer concentration: top 5 customers represent 31% of ARR, largest single customer is 9%. See Revenue Breakdown tab for detail." That is a clean answer. "Let me get back to you on that" is a diligence delay that suggests the company does not know its own numbers.

The timing of preparation

Don't wait for a term sheet to start preparing. The cost of being unprepared is measured in deal delays and lost leverage. If a buyer or investor has to wait three weeks for documents that should have been ready in three days, momentum is lost and doubts are raised. Start building your data room as a continuous project, keeping it current, so that when a process starts you're ready immediately.