Funding options for startups: 11 key paths (ENISA, VC, RBF and more)

Talking about startup funding means much more than venture capital rounds. Bootstrapping, FFF, business angels, ENISA participating loans, CDTI or NEOTEC grants, ICO credit lines, revenue-based financing, corporate venture, venture clients, family offices, equity crowdfunding... each path has its own logic, its real cost (dilution, interest rate, guarantees) and its optimal moment in the company's life cycle. This guide maps the 11 most used paths in Spain, explains the criteria for choosing between them, and includes a comparison table, practical cases and mistakes that prove costly at due diligence time.

How to choose a path: three key questions

Before knocking on the first door, it is worth answering three questions honestly. They filter out many bad decisions:

• What stage is the startup at? Idea (no product yet), pre-seed (MVP being validated), seed (product and first revenue), Series A (proven scaling), or later. Each stage has its "natural" paths and others that will barely be available to you.
• How much capital do you need and what for? Capital to validate the market (€50,000-€150,000) is not the same as capital to scale (€1M-€5M). Mixing objectives usually ends in rounds that are too small to solve anything and too dilutive for what they contribute.
• What do you want to give in exchange? Equity (VC, BA), debt with interest (ICO, RBF), both (ENISA participating loans), or nothing beyond reporting (partly non-refundable public aid). The "price" of money varies radically.

Bootstrapping: funding yourself without external capital

Bootstrapping means funding growth with the business's own revenue. It does not sound glamorous, but many of the most profitable SaaS companies in Spain (and worldwide) were built that way for years before they considered raising capital.

Bootstrapping cuts dilution to zero, but limits the pace of growth to the cash the business itself generates. In sectors with aggressive competition, that slowness can be fatal.

FFF: Friends, Family & Fools

The so-called FFF (family, friends and "fools") is usually the first outside money to enter a startup, before any formal business angel. Typical tickets: €5,000-€50,000 per investor.

What is critical here is not legal but emotional: turning people close to you into investors changes the relationship. Even so, it is worth documenting it properly (loan, convertible loan or equity) to avoid problems if things go badly or, paradoxically, if they go very well and other investors come in.

Business angels: the first "smart" money

Business angels are private investors who contribute capital and know-how at very early stages. Typical tickets in Spain: €25,000-€200,000 per investor, with joint rounds of €200,000-€500,000. Their main advantage over VCs at this stage: they decide quickly and bring a network of contacts.

There are organised networks (Big Ban Angels, AEBAN, Keiretsu, Lánzame Capital, JME Ventures, etc.) and platforms that channel angel investment (Capital Cell for biotech, Crowdcube for early-stage). The most common legal instrument is still the SAFE or a convertible loan, converting in the next institutional round.

Specific Spanish tax advantage: business angels can apply the deduction for investment in newly created companies (art. 68.1 of the Spanish Personal Income Tax Act (LIRPF)), which allows them to deduct up to 50% of the investment on a maximum base of €100,000 if the company meets the requirements for a new or recently created company.

ENISA: participating loans without personal guarantees

Spain's National Innovation Company (ENISA) is the key public piece of the Spanish ecosystem. It offers participating loans with three distinguishing features: no personal guarantees, no real collateral and repayment partly tied to the performance of the business.

• Usual lines: Young Entrepreneurs (up to €75,000), Entrepreneurs (up to €300,000), Growth (up to €1.5M).
• Terms: up to 7-9 years with a principal grace period.
• Rate: a fixed part + a variable part linked to financial profitability.
• Private co-investment: ENISA usually requires the startup to have raised an amount similar to that requested in private capital (BA, VC, founders).

CDTI, NEOTEC and R&D&i aid

Spain's Centre for Technological Development (CDTI) is the public body that channels most of the corporate R&D&i funding in Spain. Its main instruments:

• Individual R&D projects: partially repayable funding for industrial research and experimental development projects.
• NEOTEC: non-refundable aid for early-stage technology startups (up to €250,000-€325,000). Highly competitive and demanding: in 2025 around 70-90 projects were awarded out of hundreds of applications.
• EIC Accelerator (Horizon Europe): European instrument of up to €2.5M in non-refundable aid + €17.5M in equity for deep tech with global ambition. The reference programme for European deep tech.
• Kit Digital: digitalisation voucher for SMEs with amounts ranging from €2,000 to €29,000 depending on the bracket.

Public aid has three key advantages: it doesn't dilute, it provides technical credibility ("public validation") and, in many cases, it is compatible with simultaneous private funding. The trade-off: long processes (3-9 months), technical reporting requirements and, occasionally, the requirement to repay part of the aid if the project milestones are not met.

ICO and credit lines with public guarantee

Spain's Official Credit Institute (ICO) channels funding lines with a public guarantee through commercial banks. The most relevant lines for startups and SMEs include ICO Empresas y Emprendedores and ICO Verde (green transition).

Unlike ENISA participating loans, ICO lines do usually require a personal guarantee from the director (although a partial one, thanks to the 70-80% public guarantee) and they are pure debt. Useful for working capital or tangible investments, less so for startups in validation.

Venture Capital: from Seed to Series A and beyond

Venture capital is the instrument par excellence for startups aiming at fast, scalable growth. It is dilutive and demands governance, but it brings significant capital, expertise and network.

• Pre-seed / Seed (€500,000 - €2M): funds such as JME, K Fund, Samaipata, Kibo Ventures, Athos Capital, Plug and Play Spain. Tickets between €100,000 and €1.5M.
• Series A (€3M-€10M): international funds and the major Spanish ones step in (Seaya, Kibo, Cathay Innovation, Adara). Requires proven metrics: ARR/MRR, retention, CAC payback, defensible market.
• Series B and beyond (€10M-€50M+): growth-stage funds (Insight Partners, Index Ventures, Atomico, Accel) and, occasionally, sovereign wealth funds.

The key legal instrument here is the shareholders' agreement: liquidation preference, anti-dilution, founder vesting, drag along, tag along, economic rights, governance. It is where it is decided who makes decisions and who gets paid first when there is an exit. A well-prepared term sheet negotiation saves millions down the line.

Revenue-Based Financing (RBF)

RBF is debt tied to revenue: the investor advances capital and the startup repays a multiple (typically 1.2x-1.5x) based on a percentage of monthly revenue. No equity, no dilution, no personal guarantees.

• When it fits: SaaS with stable and predictable MRR, e-commerce with clear metrics, consolidated marketplaces.
• When it does NOT fit: pre-revenue, volatile revenue, very low margins.
• Platforms in Spain and Europe: Capchase, Re:cap, Pipe, Wayflyer, Uncapped, Liberis, among others.
• Real cost: equivalent to an effective interest rate of 10-25% per year depending on multiple and term. Expensive, but quick and non-dilutive.

Venture Debt: debt to extend runway

Venture debt is debt that complements an equity round, offered by specialised funds (Silicon Valley Bank in its day, Kreos, Columbia Lake Partners). It lets you extend runway without diluting, although it requires asset-based collateral or equity warrants.

Useful for companies with a recent round that want to reach the next milestones without diluting. But beware: if the next round does not arrive, or arrives at a low valuation, the pressure of the debt can be fatal.

Corporate Venture Capital and Venture Clients

Large corporations invest in startups for two reasons: financial (traditional CVC, such as Telefónica Ventures, Iberdrola, BBVA) and strategic (access to technology or market access).

Even more interesting is the Venture Client model (popularised by BMW i Ventures, Decathlon Pulse, etc.): the corporation buys the solution as a customer before investing. This validates the product, generates revenue and reduces risk for all parties.

Family Offices: patient capital

Family offices (family-run firms that manage the wealth of high-net-worth families) are increasingly active in venture in Spain. Their main differentiator versus institutional VC: longer horizons (10-20 years vs. 7-10 years for a VC fund), flexibility of instruments (equity, debt, mezzanine) and, in many cases, strategic sector contribution depending on the family's origin.

Finding family offices aligned with your sector and stage is more of a craft than an institutional process: there are no complete public lists, and much of it works through networks of contacts.

Crowdfunding and collective investment platforms

Crowdfunding lets you raise capital from many small investors through regulated platforms (in Spain, crowdfunding platforms supervised by the CNMV under EU Regulation 2020/1503). Four modalities:

• Equity crowdfunding: contributors receive shares (Crowdcube, Capital Cell, Fellow Funders).
• Crowdlending: contributors lend money in exchange for interest (October, MyTripleA, Colectual).
• Rewards crowdfunding: contributors receive the product in exchange for funding (Kickstarter, Verkami). Not strictly corporate funding, but useful for validating the product and funding the first units.
• Donations crowdfunding: contributions with no counterpart, common in social projects.

Quick comparison: when to use each path

Practical cases

Common fundraising mistakes

• Messy cap table at pre-seed: handing out equity to 15 micro-investors with tickets of €1,000-€5,000 creates a cap table that no VC wants to see in due diligence.
• Raising too much capital at a low valuation: diluting 35% in the first round conditions all subsequent rounds and limits the appeal to future investors.
• Mixing instruments without coordinating them: a convertible note with a low cap + an ENISA loan + CDTI aid can generate contractual conflicts if they are not designed together.
• Forgetting the emerging company certification (Spain's Startups Law, Law 28/2022): it grants access to the investor deduction, the stock option exemption and other tax benefits that improve the appeal to BAs and VCs.
• Not documenting FFF contributions: converting them into equity 2 years later without a prior contract is a legal and tax nightmare.
• Confusing a round with a grant competition: public aid is a lever, not the main funding. A startup that depends only on grants is not financeable.
• Negotiating the shareholders' agreement without legal advice: a 2x participating liquidation preference, full-ratchet anti-dilution or drag along clauses without a floor are burdens that are paid for at exit.
• Not planning the next round: closing a seed without a clear plan of which milestone unlocks the Series A usually ends in down rounds or in a shutdown.

Checklist before raising capital

Frequently asked questions

Conclusion

There is no single "best path" for startup funding: there is the right combination for your stage, your sector and your plan. The difference between successful rounds and painful ones is usually not about finding the right investor, but about preparing the company properly beforehand (cap table, IP, metrics, emerging company certification) and designing the strategy with a multi-year vision. Startups that intelligently combine private capital (BA, VC), public instruments (ENISA, CDTI, NEOTEC) and non-dilutive mechanisms (RBF, venture client) usually reach Series A with less dilution and on better terms than those that cling to a single channel.