Due diligence isn’t an audit; it’s a test of whether your financial engine is ready for the next stage of scale.
Going through investor due diligence? Here’s exactly what investors examine, where startups get caught out, and how to get your financials investor-ready in 90 days.
Introduction
Most founders think investor due diligence is about having good numbers.
It’s not. It’s about being able to explain your numbers — quickly, clearly, and without hesitation — under conditions that feel nothing like a normal Tuesday morning.
I’ve worked with founders at Series A, B, and C stage, and the pattern is consistent: the companies that sail through due diligence didn’t have perfect financials. They had prepared financials. They knew where the bodies were buried, they’d addressed what they could, and they could tell a coherent story about the rest.
This guide covers what experienced investors actually examine during financial due diligence, where startups most commonly get caught out, and a practical 90-day framework for getting investor-ready — whether a raise is imminent or still six months away.
What Investors Are Actually Looking For
Financial due diligence is not an audit. Investors aren’t trying to find technical errors (though they’ll notice them). They’re trying to answer three questions:
1. Is the business performing the way management says it is?
Does the financial data match the story you’ve been telling in investor meetings? If you’ve been describing 40% YoY growth, does the underlying revenue data — properly recognised, consistently categorised — actually show that?
2. Are there hidden risks that could blow up post-investment?
Deferred revenue recognised too early. Customer concentration that isn’t obvious at first glance. Payroll obligations, deferred tax liabilities, or unrecognised commitments sitting off the main reports. These are the surprises that create problems in closing.
3. Can this management team operate with financial rigour at the next stage of scale?
Investors aren’t just buying a product or a market. They’re backing a team. How you manage your finances at €5M ARR tells them a lot about how you’ll manage them at €25M.
The Eight Areas Investors Scrutinise Most
1. Revenue Recognition
This is almost always where due diligence finds the most issues. For SaaS and subscription businesses in particular: are you recognising revenue when it’s earned, not when it’s received? Upfront annual contracts, implementation fees, professional services — each has different recognition treatment. Investors know this. Their accountants will recast your revenue if they don’t trust the numbers.
2. Gross Margin Quality
Not just the headline number — the consistency and composition of gross margin over time. If margin has compressed over the last 12 months, you need a clear explanation. If certain customer segments or products are dramatically different in margin profile, that should be understood and anticipated.
3. Customer Metrics (for SaaS/Subscription)
ARR, MRR, churn (gross and net), CAC, LTV, payback period. Investors in recurring revenue businesses will build their own model from your customer data. If your CRM and your finance system tell different stories, that creates doubt.
4. Burn Rate and Runway
How much are you burning per month? What does the runway look like at current burn, and at the burn expected post-raise? Is the burn trend improving or deteriorating? These numbers should be immediately available — not something you have to calculate during a meeting.
5. Cash Flow vs. P&L
Profitable on paper but cash-poor in reality is a story investors have seen before. They’ll want to understand the working capital dynamics, the timing of collections, and how the cash flow statement reconciles with reported EBITDA.
6. Related Party Transactions
Loans to founders, payments to related entities, non-arm’s-length arrangements — even legitimate ones need to be disclosed and clearly explained. Undisclosed related party transactions are a deal-killer.
7. Deferred and Off-Balance Sheet Items
Deferred revenue, operating lease obligations (particularly post-IFRS 16/ASC 842), contingent liabilities, and any obligations that don’t show up cleanly in a basic P&L review. Sophisticated investors will dig here.
8. Finance Function Maturity
Can your team produce clean monthly management accounts? How long does your month-end close take? Do you have documented controls around payroll, payments, and expense approvals? This speaks directly to operational scalability — a major consideration for investors writing cheques in the €2M–€15M range.
Where Startups Get Caught Out
In my experience working with growth-stage companies preparing for fundraises, the same issues surface repeatedly:
Inconsistent revenue categorisation. Reclassifying revenue line items between periods makes YoY comparisons meaningless and raises red flags immediately.
No clean ARR waterfall. If you can’t produce a clear month-by-month ARR movement schedule (new, expansion, contraction, churn) without significant manual effort, that’s a problem.
Excel as the source of truth. When core financial data lives in spreadsheets rather than a proper accounting system, investors assume the numbers are unauditable — regardless of whether they’re accurate.
Founder salary ambiguity. Founders who have been drawing below-market salaries need to show investors what the true cost of founder labour should be. This affects EBITDA normalisation.
Missing or informal approvals. Expense approvals, payment authorisations, payroll sign-offs — in early-stage companies, these often happen informally. Investors want to see documented controls, not just good intentions.
A 90-Day Framework for Getting Investor-Ready
You don’t need to fix everything. You need to know your position and be prepared to explain it. Here’s how to approach the 90 days before a raise:
Days 1–30: Get an Honest Picture
Start with a financial health assessment. Not a presentation to investors — a candid internal review. Where are the inconsistencies? What would a sharp accountant question? What reconciliations are overdue?
Produce 24 months of clean monthly management accounts. If you can’t, that’s the first priority.
Review your revenue recognition policy against what’s actually been applied. If there are gaps, understand the magnitude.
Days 31–60: Fix What You Can, Document the Rest
Address the material issues first — revenue restatements, missing reconciliations, undocumented related party transactions.
For issues that can’t be fully resolved in the timeframe, build the explanation. Investors can accept complexity. They can’t accept being surprised.
Stand up basic finance controls if they don’t exist: dual authorisation on payments, documented approval workflows, a formal month-end close checklist.
Days 61–90: Build the Investor-Ready Pack
This includes:
- Audited or reviewed financial statements for the last 2–3 years (or the life of the business)
- Current year management accounts, board-quality
- A financial model with clearly documented assumptions
- Key metric dashboards (ARR waterfall, unit economics, cash flow)
- A data room that’s logically structured and easy to navigate
- Answers to the 20 most likely due diligence questions — prepared in advance
The goal is to be able to hand an investor’s accountant access to your data room and have them come back with no surprises.
When to Get External Help
If your internal finance resource is stretched — or if you don’t have a dedicated finance lead — the 90-day window before a raise is not the time to learn on the job.
An experienced interim or fractional CFO who has been through multiple due diligence processes knows exactly what investors will examine, how to present it, and how to navigate the conversations when questions arise. That expertise pays for itself many times over if it protects your valuation or keeps a deal from falling apart in closing.
At Saoirse Consultants, we’ve supported founders through fundraise preparation at Series A through C stage — building the financial infrastructure, preparing the data room, and coaching leadership teams through the due diligence process.
Conclusion
Financial due diligence doesn’t have to be the part of a fundraise you dread.
With the right preparation, it becomes an opportunity to demonstrate that your business is exactly what you’ve said it is — and that you’re the kind of operator investors can trust with their capital.
Start the process earlier than you think you need to. The issues that derail deals in due diligence were usually present six months before the investor walked in the door.
If you’re planning a raise in the next 6–12 months and want an independent view of where your finances stand, book a consultation with Saoirse Consultants. We’ll tell you honestly what’s there — and what needs to change.
Email us at info@saoirseconsultants.com, or call us on +1 214 230 1706
