The rule of thumb most UK investors work to is 10-20% per round. Give away much more than 25% at pre-seed and the maths gets hard later: by Series A you can end up below the ownership level investors want founders to keep. If a deal asks for more, question the valuation, not just the cheque size.

It compounds. Start at 100%, sell 15-20% at pre-seed, seed and Series A, add a 10% option pool, and most founding teams land somewhere near 50% by Series A. That is normal, not a failure. Put your own numbers into the calculator above to see where you'd end up.

Yes, a lot. Most UK angels expect SEIS or EIS relief before they'll write a cheque - it derisks their money, not your equity. Get HMRC advance assurance before you start the raise. It's often the difference between a fast yes and a slow maybe.

Around 10% set aside at pre-seed or seed is typical. Watch where it comes from: investors usually want the pool created pre-money, which means it comes out of the founders' share, not theirs. It's one of the most negotiable lines on a term sheet - so negotiate it.

Start before you raise. Most failed raises fail on preparation, not the idea. Get your story, model and data room straight first - that's what my investment readiness work covers - or book a free Funding Clarity Call and we'll find your gaps together.