Your cap table might be the most important document you’re not paying enough attention to. It’s easy to treat it as an afterthought when you’re focused on building product, landing customers and keeping the lights on. But the decisions you make about equity in the early days have a way of compounding – and not always in your favour.

The founders who get this right rarely have to think about their cap table at all. The ones who get it wrong spend months untangling messes that could have been avoided with a bit of forethought. And sometimes, the mistakes are bad enough to kill deals entirely.

Giving away too much, too early

This is the classic trap. In the excitement of getting your first advisors, early employees or co-founders on board, it’s tempting to be generous with equity. After all, you’re all in it together, and ownership feels like the right way to show commitment.

The problem is that early equity grants set the tone for everything that follows. If you give 5% to an advisor who helps you for six months, what do you give the VP of Sales who joins full-time and helps you scale to $5 million ARR? If your first five employees each have 3%, what’s left for the Series A option pool?

The founders who navigate this well are thoughtful about vesting schedules, clear about what equity is meant to reward and realistic about how much runway they have ahead. A four-year vesting schedule with a one-year cliff exists for a reason – use it.

The co-founder equity time bomb

Splitting equity between co-founders feels straightforward at the start. You’re mates, you’re equally committed and a 50/50 split seems fair. Or maybe one person had the idea, so they take 60% and everyone else divides the rest.

Fast forward 18 months, and one co-founder has quietly checked out while still holding a massive chunk of the company. Or there’s a disagreement about direction, and suddenly you’re trying to buy back equity from someone who isn’t contributing but won’t leave.

Co-founder equity should always vest. Always. It protects everyone involved and ensures that ownership reflects actual contribution over time, not just who was in the room on day one.

Messy record-keeping

You’d be surprised how many founders don’t actually know what their cap table looks like. They’ve issued shares to a few people, maybe granted some options, possibly done a convertible note or SAFE – but it’s all scattered across emails, PDFs and half-remembered conversations.

This becomes a serious problem when investors start asking questions. Due diligence requires a clean, accurate cap table that accounts for every share, option and instrument ever issued. If you can’t produce one, it raises red flags about how you run your business more broadly.

Keep your cap table updated in real time. Use proper software or work with someone who can manage it for you. The cost of maintaining clean records is trivial compared to the cost of reconstructing them under pressure.

Option pool surprises

When you raise capital, investors will typically require you to set aside an option pool for future hires. What many founders don’t realise is that this pool usually comes out of the founders’ ownership – not the investors’.

If you’re not prepared for this, the dilution can be jarring. You thought you were selling 20% of the company, but after the option pool is carved out, your effective ownership drops more than you expected.

Understanding how option pools work – and negotiating their size thoughtfully – is an important part of any funding conversation. Don’t let it catch you off guard.

Convertible instruments that create confusion

SAFEs, convertible notes, ASAs – there are plenty of ways to raise early capital without setting a valuation. They’re popular because they’re fast and simple. But they can also create cap table complexity that’s hard to unwind.

The issue is that these instruments convert into equity later, often at a discount or with a valuation cap. If you’ve done multiple rounds of convertible fundraising, figuring out what everyone actually owns can become genuinely complicated. And if the terms aren’t consistent across instruments, you can end up with investors who feel they got a worse deal than someone else.

None of this means you shouldn’t use convertible instruments. Just make sure you understand the downstream implications and keep careful track of what you’ve issued and on what terms.

Fix it before it becomes a problem

If your cap table is already a bit messy, now is the time to clean it up – not when you’re in the middle of a funding round and investors are asking questions. A few hours of work today can save you weeks of pain later.