Preparing for Investor Due Diligence
The term sheet feels like the finish line, but it is really the start of the closest look anyone has ever taken at your company. Investor due diligence checks that everything you said in the pitch is true and that nothing hidden could hurt the deal. Prepare in advance and it becomes a few busy weeks. Leave it to chance and it can stall or even sink your round.
Key takeaways
- Due diligence usually covers legal, financial, commercial, technical and team questions, and the depth grows with the size of the round.
- Build your data room before you need it, with a clear folder structure and an index investors can scan in minutes.
- Fix common gaps early: missing IP assignments, unsigned contracts, undocumented option grants and messy financials.
- Disclose problems yourself. Investors forgive issues far more easily than surprises.
Every investor runs diligence differently. An angel writing a small check might ask for a few documents and a call with a customer. A venture fund leading a priced round may send a long request list and bring in lawyers and accountants. Either way, the founders who move fastest are the ones who prepared before the first meeting, not after the term sheet.
This guide is general information, not legal, tax or investment advice. Requirements depend on your jurisdiction, company type and the specific deal, so work with a startup lawyer and an accountant as you prepare.
What investors look at in due diligence
It helps to know the main areas so you can organize around them. Most requests fall into five groups.
Legal and corporate
Investors want proof that the company exists properly, that the people who own it are who you say, and that the company owns what it sells. Expect questions about incorporation documents, share issuances, option grants, board approvals, IP ownership and any disputes.
Financial
They will compare your historical numbers with what you presented, check tax filings, and test the assumptions behind your forecast. Clean, consistent bookkeeping matters more than impressive figures.
Commercial
This covers customers, contracts, pipeline, pricing and churn. Investors may ask to speak with a few customers directly, so think now about who would give a fair, positive reference.
Technical and product
For software companies, expect questions about architecture, security practices, open source licenses, data handling and who wrote the code. Some investors bring in a technical adviser for a review.
Team
Investors check founder backgrounds, employment agreements, contractor arrangements and key hires. Reference calls with former colleagues are common, sometimes without telling you first.
Build your data room before you need it
A data room is a secure online folder where you share documents with investors. You can use any reputable file-sharing tool with access controls and activity tracking. What matters is the structure and the content, not the brand.
A typical data room includes incorporation documents, the cap table, financials, contracts, IP assignments, employment agreements, board minutes and company policies. Organize them in numbered folders so investors always know where to look.
A data room index template
Copy this index into a spreadsheet and keep it at the top of your data room. The file names and statuses below are made-up examples.
| Folder | Document | Status | Notes for investors |
|---|---|---|---|
| 01 Corporate | Certificate of incorporation and bylaws | Uploaded | Includes amendment from seed round |
| 04 Financials | Monthly management accounts, last 24 months | Uploaded | Reconciled to bank statements |
| 06 IP | Founder and contractor IP assignment agreements | Missing one | Contractor signature requested, due Friday |
A good folder order is: 01 Corporate, 02 Equity and cap table, 03 Board and shareholder approvals, 04 Financials and tax, 05 Commercial contracts, 06 IP and technology, 07 Team and employment, 08 Policies and compliance, 09 Insurance, 10 Litigation and disputes.
Pro tip
Create two levels of access. Share a light "first look" folder with the pitch deck, a financial summary and the cap table during early meetings, and open the full data room only after a term sheet or a serious expression of interest. You keep sensitive contracts private until a deal is genuinely likely.
Clean up your legal house
Legal gaps are the most common cause of delays. Most are easy to fix if you find them early and painful if an investor's lawyer finds them first.
- Confirm every share issuance is documented. Each founder, investor and employee holding shares should have a signed agreement and a matching board approval. Your share ledger should match the cap table exactly.
- Check IP assignments. Every founder, employee and contractor who created code, designs or content should have signed an agreement assigning that work to the company. Work done before incorporation needs an assignment too.
- Review option grants. In the US, options are usually priced at fair market value based on a 409A valuation. Make sure each grant was board-approved and priced correctly. In the UK, check that any EMI options were set up and notified as required.
- Find your 83(b) elections. US founders who received restricted stock should have filed an 83(b) election within 30 days. Keep proof of filing, because investors often ask.
- Collect signed contracts. Make sure customer, supplier and partnership agreements are signed and stored, and note any change-of-control, exclusivity or assignment clauses.
- List any disputes. Even small disagreements with former employees, customers or contractors should be written down with their current status.
Common mistake
Assuming a handshake with an early freelance developer means the company owns the code. Without a written assignment, ownership can be unclear, and investors may make fixing it a condition of closing. Track down everyone who contributed meaningful work and get it in writing now, while relationships are friendly.
Get your financials investor-ready
You do not need audited accounts for an early round, but you do need numbers that hold together. Investors will cross-check your deck, your management accounts, your bank statements and your tax filings.
- Reconcile everything. Make sure your books match the bank, and that revenue in your deck matches revenue in your accounts.
- Define your metrics. Write a one-page glossary explaining exactly how you calculate revenue, recurring revenue, churn, customer counts and margins. Inconsistent definitions are a red flag.
- Show your forecast logic. Share the model, not just the chart. Make assumptions visible and label them clearly as estimates.
- Check tax filings. Confirm that corporate, payroll and sales or VAT returns are filed and paid. Unpaid taxes can become a liability for the new investors too.
- Explain one-offs. A big month from a single contract or a grant should be labeled so it does not look like a trend.
Hypothetical example
Sam's startup receives a term sheet in early spring. Because Sam built the data room months earlier, the investor's lawyer gets 90% of what they need on day one. Two issues come up: a former contractor never signed an IP assignment, and the deck counts free pilot users as customers. Sam already lists both in a short disclosure note, gets the contractor's signature within a week and updates the deck to separate paying customers from pilots. The round closes on schedule, and the investor later says the honesty was what gave them confidence.
Prepare people, not just paperwork
Diligence also involves conversations. Get ready for them as carefully as you prepare the documents.
Customer references
Pick three to five customers who know the product well and represent your target market. Ask their permission, tell them roughly what investors may ask, and do not script their answers. Investors can tell.
Team and founder references
Assume investors will call people you did not list. Make sure your story about past roles, departures and achievements is accurate and consistent across your deck, your online profiles and your conversations.
Your own answers
Write down the ten hardest questions you expect, from churn to competition to why a co-founder left, and draft honest answers. Practice them with an adviser. Calm, direct answers build far more trust than polished spin.
Run the process like a project
Once diligence starts, requests can arrive daily. Treat it like a short project with an owner and a tracker.
- Appoint one point of contact. Usually a founder, supported by your lawyer. It stops duplicate answers and mixed messages.
- Keep a question log. Record every request, who answered, the date and the document provided. It prevents the same question being answered twice in different ways.
- Set response times. Aim to acknowledge requests within a day and answer within a few days. Speed signals that the company is well run.
- Prepare a disclosure list. Write down known issues and how you are handling them. Your lawyer can use it when drafting the disclosure schedule that often accompanies the final documents.
- Protect the business. Diligence is time-consuming, so agree who keeps sales, product and customer support moving while it happens.
Your due diligence prep checklist
- Create a data room with numbered folders and an index
- Upload incorporation documents, the cap table and board minutes
- Collect signed IP assignments from founders, employees and contractors
- Confirm option grants, valuations and any 83(b) or EMI paperwork
- Reconcile financials and write a metrics glossary
- Gather signed customer, supplier and employment contracts
- Write a short disclosure list of known issues
- Line up customer references and brief them
- Name one point of contact and start a question log
Frequently asked questions
How long does investor due diligence usually take?
It varies with the size of the round and how ready you are. A small angel round may involve a few days of checks, while a larger priced round can take several weeks. A complete data room is the best way to shorten it.
Should I share everything in the data room right away?
Not necessarily. Many founders share a summary folder early and open sensitive contracts and customer details only after a term sheet or strong interest. Use access controls and confidentiality terms where appropriate.
What if diligence uncovers a problem?
Explain it honestly, show how you are fixing it and give a timeline. Many issues can be solved before closing or covered in the deal documents. Hiding a problem that is later discovered does far more damage.
Do I need a lawyer for due diligence?
For any priced round or significant investment, yes, it is strongly recommended. A startup lawyer can spot gaps before investors do and negotiate how issues are handled in the final documents.
Related reading
The bottom line
Preparing for investor due diligence is mostly about organization and honesty. Build your data room early, close legal gaps like missing IP assignments, make sure your numbers match everywhere, and disclose known issues before anyone finds them.
Pick one folder from the index above and complete it this week. By the time a term sheet arrives, you will be ready to say "it is all in the data room", and that sentence alone tells investors a lot about how you run your company.
