Insights topic
Funding & Investment
Funding stages, valuation, investor expectations and the relationship between capital and company building.
How ventures are funded stage by stage, and what investors are actually assessing at each point.
What this topic covers
Venture Building
Why GCV Labs exists: building better businesses, not just funding them
Why GCV Labs exists, how our seven-stage venture builder model works in practice, and how AI is changing the way we create and scale companies.
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What is a venture builder?
A venture builder creates companies. It is not an incubator, an accelerator or a fund - it is an operating model for turning opportunities into businesses, and understanding that difference matters before you choose who to build with.
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We don't just invest in companies. We help build them.
Venture builders create companies, not just back them. Here is how the GCV Labs model works and what it changes about early-stage company creation.
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Why invest in venture-built companies?
What a venture-built company looks like from an investor's side of the table, and which early-stage risks the model removes - and which it does not.
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Venture builder vs venture capital: what actually differs
Both models want valuable companies. They differ in when they engage, what they contribute and where the work sits - and confusing the two leads founders and corporates to expect the wrong things from each.
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Capital alone doesn't build great companies
Funding is a necessary input into company building. On its own it is rarely the constraint that decides whether a venture works - and treating it as the main event is one of the most common mistakes in early-stage company creation.
Read the articleBuild Stories
From build to exit: what a venture builder contributes that capital alone cannot
Capital is necessary but it does not assemble a company. Intelligence Fusion shows what a venture builder contributes from idea through to acquisition.
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Why we built Quva: a venture builder creating its own technology
Quva started as the platform behind GCV Invest, then became its own brand and licensing model. Here is why a venture builder built its own technology.
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How to size a market: TAM, SAM and SOM without fooling yourself
What TAM, SAM and SOM actually mean, how to calculate them bottom-up, and a worked example you can copy.
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The metrics that matter: CAC, LTV and payback
How to calculate CAC, LTV and payback honestly, with a worked example and the ratios that actually drive decisions.
Read the articleScale
Building enterprise value, not just revenue
The six components of enterprise value beyond revenue, and the decisions during Scale that make a company valuable rather than merely large.
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Assessing risk in early-stage companies: an investor's checklist
The six-lens diligence framework we use when assessing an early-stage company, and the questions under each that reliably surface the real risk.
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Building an early-stage investment portfolio
Position sizing, spread, pacing, follow-on capital and the role of SEIS and EIS in constructing an early-stage portfolio you can actually hold.
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How GCV Labs and GCV Invest work together
Build and fund are two distinct capabilities in the Growth Capital Ventures ecosystem. Here is where the boundary sits and why it exists.
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SEIS and EIS explained for early-stage investors
A plain-English guide to SEIS and EIS: the reliefs, the limits, the conditions, the risk-to-capital test, and the questions to ask before you rely on either.
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What is SEIS? A plain-English guide for investors
What SEIS is, which reliefs it carries, who it is designed for, and the conditions attached to every one of them.
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SEIS vs EIS: which scheme applies, and when
A side-by-side comparison of the two venture capital schemes, and how a single funding round can use both in sequence.
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Who can invest under SEIS: eligibility and the connection rules
The investor-side conditions: UK tax liability, the 30% interest test, the employee rule, and what counts as being connected to the company.
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SEIS income tax relief: how the 50% works in practice
How the 50% relief is calculated, what caps it, and what happens when your tax liability is smaller than your entitlement.
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SEIS loss relief: what happens when a company fails
How the net loss is calculated, the choice between setting it against income or gains, and what it means for the real downside on an SEIS position.
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SEIS capital gains: exemption and reinvestment relief
Disposal relief and reinvestment relief explained, including the conditions on each and how they interact with income tax relief.
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SEIS carry back: claiming against last year's tax
What carry back does, when it is worth using, the limits that still apply, and how to elect for it.
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SEIS limits: company caps, investor limits and the allowance
Every SEIS threshold in one table, what each one is measured against, and what happens when a company outgrows them.
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The SEIS three-year holding period and how relief is withdrawn
The qualifying period, the events that trigger withdrawal or reduction of relief, and who has to tell HMRC.
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Advance assurance and the SEIS3 certificate
What advance assurance is worth, how the compliance process works, and when you can expect the SEIS3 that lets you claim.
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How to claim SEIS relief on your tax return, step by step
What you need before you start, where each figure goes, the deadlines that apply, and what to keep on file.
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Building an SEIS portfolio: spread, pacing and position size
A practical framework for constructing an SEIS portfolio: how many holdings, how large, over how long, and what to keep in reserve.
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What is EIS? A plain-English guide for investors
What EIS is, the four reliefs it carries, which companies qualify, and where it sits relative to SEIS.
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Who can invest under EIS: eligibility and the connection rules
The eligibility tests: UK tax liability, the 30% holding limit, employment and directorship, and the two-years-before, three-years-after connection window.
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EIS qualifying companies: which businesses are eligible
Permanent establishment, independence, employee and asset limits, the seven-year age rule, the qualifying business activity test and the list of excluded trades.
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EIS income tax relief: how the 30% works in practice
The calculation, the caps, carry back, and the conditions that have to hold for three years.
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EIS capital gains: exemption and deferral relief
How disposal exemption and deferral relief differ, the conditions for each, the reinvestment window, and when the deferred gain comes back into charge.
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EIS loss relief: what happens when the company fails
The net amount at risk, the choice between income and gains, worked numbers at each tax rate, and the time limits for claiming.
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EIS carry back: claiming relief against last year's tax
What carry back does, the limits that still apply, the situations where it is worth using, and how the election is made.
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EIS limits and rules: what companies and investors must meet
Company caps, gross asset tests, age limits, connection rules and the three-year holding period, with the figures that changed in April 2026.
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The EIS three-year holding period and how relief is withdrawn
When the clock starts, what counts as a disposal, how withdrawal is calculated, and the company-side events that break the period.
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EIS advance assurance and the EIS3 certificate
What advance assurance is worth, the EIS1 to EIS2 to EIS3 sequence, the four-month trading rule, and what to check on the certificate.
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How to claim EIS relief, step by step
The EIS3 certificate, the self assessment boxes, claiming through PAYE, carry back and the five-year time limit.
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The risks of EIS and SEIS investing
Company failure, illiquidity, dilution, withdrawal of relief, valuation uncertainty, concentration and rule change - with what each one means in practice.
Read the articleComing next on this topic
- Funding stages explained: pre-seed to Series A
- What investors assess at each stage
- Valuation for early-stage ventures
- Building an investor-ready data roomScale
- Milestone-based funding and why it worksIncubate
- Cap table management for foundersCreate
- Convertible instruments and priced rounds
- What a good investor update looks like