Assume, based on comparable deals, that Wash Out sold a 20% equity stake in their company to Telepass.
Valuation = investment / equity stake sold.
Then Wash Out is valued at €1 million / 20% = €5 million post-money.
Assume, based on comparable deals, that Telepass wants to make 15x on their investment.
Exit value = valuation * money multiple.
Then Wash Out’s €5 million valuation requires a €5 million * 15 = €75 million exit value.
To simplify, this ignores dilution. To make 15x with 50% dilution, the €5 million valuation actually requires a €5 million * 15 / (1–50%) = €150 million exit value.
Assume, based on comparable companies, that Wash Out trades at 3x revenue per year at exit.
Revenue per year = exit value / revenue multiple.
Then Wash Out’s €5 million valuation requires €75 million / 3 = €25 million revenue per year at exit. Or €2.1 million revenue per month.
Wash Out charges €21.90 per washing including VAT. At 22% VAT, that’s €17.95 per washing excluding VAT
Washings per month = revenue per month / price per washing.
Then Wash Out’s €5 million valuation requires them to sell €2.1 million / 17.95 = 116,000 washing per month at exit.
Obviously, Wash Out doesn’t need to sell to 116,000 new customers per month. They do need to sell 116,000 washings per month.
For context: in 2017 Milan had approximately 701,000 cars.