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For founders & co-founders
Shared ownership calculator
Some of us struggle with the maths when trying to work out exactly how many shares (or options) to give to a member of the team so that they end up with 5% of the company. To make it easier, we've built this shared ownership calculator to do the hard work for you.
How to use the calculator
- Add your existing shareholders, either individually or as a single block, and how many shares they hold.
- Add the other members of the team and the percentage of the company you want them to end up with.
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Current shareholders
| Name | Number of shares | Ownership | Actions |
|---|
2
Future shareholders
| Name | Number of shares | Ownership | Actions |
|---|
Ownership across future shareholders can't reach or exceed 100%. Please lower one or more percentages.
3
Final ownership
| Name | Number of shares | Final % |
|---|
What is dilution?
Dilution is the decrease in ownership percentage of existing shareholders when a company issues new shares, whether to raise investment or to grant options to the team.
As well as a smaller ownership slice, dilution affects earnings per share and voting power, so it's worth understanding before you authorise new shares. Read the full explainer.
Dilution formula
Dilution % = New shares ÷ (Existing shares + New shares) × 100
Example: 1,000,000 existing shares + 200,000 new shares issued = 16.67% dilution for existing holders.