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How to Value Your Startup: Pre-Seed and Seed Valuation Basics

Part 2 - The Ultimate Guide to DIY Fundraising for Early-Stage Tech and Digital Startups (UK & US)

Launching a startup is exhilarating, but raising that first capital can be daunting. This comprehensive guide, which we are serialising in 9 parts, is your all-in-one playbook for DIY fundraising at the pre-seed and seed stages, tailored for solo founders and small teams in the UK (and secondarily the US). We’ll cover every step - today we show you how to value your early stage startup.

Frustrated Tech Founder Trying to Figure Out 'What his Startup's Worth'
'What's my startup's worth?!' It doesn't need to be so hard...

One of the trickiest questions for early-stage founders is, “What is my startup worth?” At pre-seed or seed, your company likely has little or no revenue, making traditional valuation metrics (like EBITDA multiples) meaningless. Valuation in these stages is more art than science, it’s about potential, team credibility, and market size. Here’s how to approach it:

  • Understand the Norms: While each deal varies, there are industry benchmarks that can guide you. In the UK, recent data shows pre-seed startups often raise at valuations around £3–4 million . For instance, UK pre-seed valuations in 2024-2025 averaged about £3.2M (up 31% from 2023). Seed-stage post early-revenue startups might see valuations around £4–5M pre-money in the UK. In the US (which generally trends higher), a typical pre-seed round might be $0.5M–$1M raised on a ~$5–6M valuation . By seed stage, US companies often raise $2M–$4M on $12M–$15M valuations . These figures are not hard rules, but knowing the ballpark helps set realistic expectations. If you go significantly above these ranges without exceptional traction, investors may push back. LettsGroup's AI VentureFactory has powerful tools to ehlp you value your startups and get investor ready.

  • Equity Dilution: Early investors typically target 10–25% ownership in a round. At seed, it’s common for all seed investors combined to get ~15–25% of the company. Pre-seed rounds (especially friends/family or angel rounds) might be a bit less dilutive (~5–15%), but it depends. Be cautious about over-dilution, if you sell, say, 25% at pre-seed and another 25% at seed, you’ve given up half your company before Series A. On the flip side, offering too little equity for a needed sum can overprice your startup and deter investors. Striking a balance is key. Remember that valuation = amount raised ÷ equity percentage sold. If you seek £500k and feel 15% is the max you’re willing to give now, you’re proposing ~£3.3M pre-money valuation (500k/0.15). Check if that aligns with what similar startups are getting in your domain/stage.

  • Methodologies: Traditional methods like Discounted Cash Flow (DCF) or revenue multiples aren’t very meaningful for pre-revenue startups. Instead, investors use heuristics:

    • Comparable Raises: What valuation did startups at a similar stage in your industry raise at? (Hence the importance of the benchmarks above and networking with other founders and investors).

    • Team and Tech: A repeat founder with a prior exit might justify a higher valuation on team strength. A deep-tech AI startup might get a bit more credit for IP or technical innovation. Conversely, if it’s a crowded space or you lack experience, investors may insist on a lower valuation to compensate risk.

    • *The * “valuation cap” on SAFEs/notes: Many early deals use convertible instruments (SAFE or convertible note) with a valuation cap. This cap is effectively the max valuation at which the money will convert in a future priced round, thus it sets an implied valuation without formally pricing the round now. Median valuation caps for pre-seed SAFEs have been around $10M in recent times in the US (around £8M). In the UK, common SEIS/EIS SAFE equivalents often have caps in the £2M–£5M range for pre-seed. If using a SAFE, picking a reasonable cap aligned with your peers can simplify the conversation.

Founder Lying on Pile of Money Celebrating Raising Money
Get your valuation right and this might be your day - over-value your startup at peril...
  • Be Realistic & Flexible: It’s very hard to “objectively” value a pre-revenue startup , and investors know this. Even third-party “valuation services” can only estimate. Don’t obsess over squeezing the highest valuation; optimise for getting the right partners and enough capital. Often it’s better to accept a fair valuation that brings supportive investors than to overprice and struggle to raise at all. Also consider structuring the round with a convertible note or SAFE which defers the strict valuation negotiation. In fact, roughly 80% of pre-seed rounds use SAFEs for their simplicity. These typically come with a valuation cap (e.g. £3M or £5M) and a discount (often 20%) for converting in the next round. This way, everyone agrees you’ll price the company later when there’s more data, while early investors get the upside of a cap if you grow fast.

  • UK SEIS/EIS Considerations: In the UK, if you qualify for the SEIS/EIS schemes , you effectively make your valuation more attractive by giving investors a big tax break. Under SEIS, investors can get 50% of their investment back in income tax relief (and other benefits on gains/losses). This means UK angels might be willing to invest at somewhat higher valuations or in riskier concepts because their downside is cushioned by tax relief. Make sure to apply for SEIS/EIS advance assurance from HMRC before fundraising – it’s a one-page form and signals to investors that if they invest, they’ll get the tax relief. The impact is huge: over 32,000 companies have been funded through SEIS/EIS totaling £24B , underscoring how vital these schemes are in UK early-stage funding.

  • Don’t Overthink “Percentage Owned”: Founders sometimes worry about “only owning X% after the round.” It’s better to own 30% of a £100m company than 100% of a £1m company. The goal is to get to product-market fit and scale; that will require capital and dilution. As long as you’re diluting in exchange for value (capital + investor expertise), it’s part of the game. However, do avoid giving too much to friends & family or others just because they’re close. You need enough equity on the cap table to incentivise future institutional investors and key hires. As a rule of thumb, try to keep >50% as founders through seed stage if possible, so you’re in a strong position for Series A (where another 20% dilution often occurs).

Valuation Pitfalls to Avoid: One pitfall is setting valuation based on your personal worth (“I put a year of work, it’s worth £X”), as investors only pay for future potential, not past effort. Also avoid unsubstantiated big numbers (“$1B market so we’re worth $10M now”). Justify any number you propose with logic. Finally, be mindful of down rounds: raising too high now can lead to a painful “down round” later if you don’t meet milestones, which can hurt team morale and investor confidence. It’s often wiser to raise at a moderate valuation and beat expectations, than at a sky-high valuation and struggle to justify it later.

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