🌊 Deep Dive: Equity Calculators for Founders, Co-founders & Advisors: Framework for Fair Allocation

How to divide equity fairly, protect your cap table, and avoid the biggest mistake founders make with equity allocation

We hear a lot about equity (and it’s something every founder should understand if they want to fundraise), but i’ve found that few really understand how to manage it effectively.

Two years into building Mane Hook-Up, I realised one thing I had done right was having a clear sense of what my equity allocation would be from day one.

I didn’t give it away like water. I didn’t offer every person the same deal blindly. I didn’t panic and offer massive stakes to early people who didn’t deserve them.

Instead, I did my research, understood the benchmarks, and made deliberate decisions about who gets equity and how much.

This is one of the most consequential decisions you’ll make as a founder. Get it right, and you build a motivated, aligned team. Get it wrong, and you can stall future fundraising, create toxic team dynamics, or end up with “dead equity” held by people who left years ago.

Here’s the honest framework for equity allocation - and how to use calculators to make decisions bound in logic, not emotion.

P.S. I’ve created a glossary of terms at the bottom of this article for people to refer back to and learn from.

Note for readers: Everything in this deep dive about co-founder equity splits is based on research I’ve done - talking to founders, advisors, and people in the industry - not from personal experience of building with a co-founder. This is the research-backed guide to equity allocation. Use it to make better decisions than I would have if I’d just guessed.

The #1 Mistake Founders Make (And How to Prevent It)

Before we talk about how to allocate equity, let’s talk about the biggest mistake that ruins cap tables:

Founders give away too much, too soon, with no clear thinking about what they want to own in the end.

Here’s how it typically happens:

A founder gets excited about an idea. They bring on a co-founder and split 50/50 (or 60/40 or 70/30). Then they hire their first technical person and offer 3-5% to get them excited. They bring on an advisor and promise 1% because the advisor is impressive. They hire a marketing person and offer another 2%.

By year three, they’ve given away 15-20% across various people. By year five, when they’re trying to raise a real round or hire senior people who will actually move the needle, they realise they’ve allocated most of their company and have nothing left to motivate the people who actually built it.

Then they’re stuck: either they can’t raise because their cap table is a mess, or they can’t hire because they have no equity left to offer.

The fix is simple: reverse-engineer from the end.

Reverse Engineering Your Equity Budget: A Practical Example

Let’s say you’re building a health-tech SaaS company. You want to stay 55% founder-owned after five years. That means you can give away 45% total across advisors, early hires, future employees, and everything else.

Now, break that 45% down:

• Advisor pool: 5% (for your board, strategic advisors, early believers)

• Employee option pool (for future hires): 5% (standard for start-ups planning to raise funding)

• Investors (Angel, VC, crowdfunding) 20%

• Early core hires (first 3-5 people): 10%

• Buffer for unexpected allocations: 5%

That’s your equity budget. Everything has to fit within it.

Now you can make decisions:

“If I want to hire a Head of Engineering, and I have 10% to split among my first 3-5 hires, I should allocate 4-6% to that person depending on their stage. That’s my guardrail.”