What investors look for in a startup financial model

Investors don't expect your forecast to come true. They use your model to judge three things: whether you understand how your business makes money, whether the plan is realistic, and whether the money you are raising gets you somewhere worth getting to. Here is how a typical review runs, and what they check.

How an investor reviews your model

1. Minute 1Summary pageRevenue, burn, runway, raise
3. Minute 5Sanity checksBalances? Ties? Hard-coded numbers?
5. Minute 15Revenue driversBottom-up? Growth realistic?
7. Minute 30Unit economicsCAC, LTV, payback, margin
9. Next meetingQuestions listWhat to ask the founder

The checks

1. Does the maths hold together?

The balance sheet must balance and cash must tie, every month. Totals must add up, and links between sheets must work. Errors here suggest the rest of the numbers can't be trusted either. How the three statements link.

2. Is revenue built from the bottom up?

Investors look for customers × price, with conversion, churn and sales capacity behind it. A revenue line that grows at a fixed percentage with nothing driving it is a warning sign.

3. Are the unit economics sound?

For subscription businesses, common benchmarks are a customer lifetime value at least three times the cost of acquiring the customer, and acquisition cost paid back within about 12 months (David Skok, SaaS Metrics 2.0). Gross margin also matters: it sets how much each sale contributes to the fixed costs.

4. Is growth ambitious but believable?

Investors compare your growth with what the best companies have achieved. One well-known benchmark for SaaS is "T2D3": triple revenue for two years, then double for three (Neeraj Agrawal, TechCrunch). Growth well beyond that needs strong evidence.

5. How efficient is the burn?

The burn multiple is net cash burned ÷ net new annual recurring revenue. Below 1 is excellent and above 2 is a concern (David Sacks). It tells an investor how much cash each pound of growth costs.

6. How long is the runway?

The raise should fund the plan to clear milestones with a buffer, because fundraising takes months and rounds are often further apart than founders expect (Carta, time from seed to Series A).

7. Does resourcing match the plan?

Investors check that hiring keeps pace with growth: revenue per employee, sales capacity against new customers, and salaries in line with the market. Ten times more customers handled by the same three people is a red flag.

8. Is the market big enough, and sized properly?

A bottom-up market size (number of target customers × what they would pay) is more convincing than a top-down industry figure (Pear VC).

Red flags that end conversations

Check yours before an investor does

Caiflo's readiness score runs these checks on your model and tells you, in plain English, what to fix. Investors use Caiflo's X-ray to run the same checks and more on any Excel model, and it points them to the exact sheet and cell.