Learning
August 04 / 2025
Does your start-up already have a minimum viable product and is ready to scale? A business accelerator could be exactly what you need to take your company to the next level. While incubators help you shape your idea, accelerators focus on scaling businesses that are already up and running.
A business accelerator is an organisation that selects start-ups with high growth potential and offers them an intensive support programme over a limited period, typically between three and six months. Its main objective is to accelerate their growth through specialist mentoring, access to funding, and strategic connections with investors and industry partners.
A start-up accelerator acts as a catalyst for emerging companies that have already validated their business model and are looking to scale rapidly. These organisations bring together teams of experts, mentors and investors who provide valuable experience, knowledge and connections.
The process typically includes intensive training, one-to-one mentoring sessions, specialised workshops and access to a network of contacts that can be decisive for a start-up’s future. At the end of the programme, companies take part in a ‘Demo Day’, where they present their progress to potential investors, the media and prospective strategic partners.
In exchange for this comprehensive support, many accelerators take an equity stake, usually ranging from 5% to 15% of the start-up’s share capital, thereby becoming strategic partners who benefit from the company’s future success.
Although the two concepts are often confused, business accelerators and business incubators have different purposes, methodologies and approaches.
The most significant difference lies in the stage at which they become involved. Incubators work with projects at a very early stage, from the conceptualisation of an idea through to the creation of the company. Accelerators, on the other hand, support start-ups that already have a developed product and are ready to scale.
Incubators focus on helping to turn business ideas into reality and on building viable companies from the ground up. Accelerators aim to transform existing start-ups into scale-ups : fast-growing companies with strong potential for expansion.
Incubation programmes tend to be more flexible in length, typically ranging from six months to two years. Acceleration programmes are more intensive and have a fixed duration, generally between three and six months.
| Aspect | Incubator | Accelerator |
|---|---|---|
| Project stage | From idea to creation | Already established and operational companies |
| Type of project | Turning ideas into start-ups | Turning start-ups into scale-ups |
| Main objective | Build and validate the business | Accelerate growth and scalability |
| Duration | 6-24 months (flexible) | 3-6 months (intensive) |
| Funding | Free or subsidised services | Initial investment + equity |
The choice between a start-up accelerator and an incubator depends mainly on the stage of development of your business.
Opt for an incubator if you have an innovative idea but still need to develop your business model, build a minimum viable product or establish the company’s legal structure. Incubators are ideal for entrepreneurs in the early stages who require comprehensive support to shape and refine their project.
Choose an accelerator if your start-up is already up and running, you have a product or service on the market, early customers and a validated business model. Accelerators are best suited when you need to drive growth, access more substantial funding and expand your network of strategic contacts.
Joining an accelerator can be a transformative step for your start-up, as it provides the momentum needed to reach new goals. Before applying, it is essential to understand the requirements and assess whether your company meets the necessary criteria. While these may vary slightly depending on the accelerator, below are the most common requirements.
Business accelerators require start-ups to have at least an MVP , meaning a product or service that has already been developed and tested in the market. It is not enough to have just an idea; you need to demonstrate that your solution works and that there is genuine demand from users.
You must present a clear business model showing how you generate revenue, what your value proposition is, and how you plan to scale. Accelerators look for companies that have already demonstrated commercial viability and have metrics to support their growth potential.
A strong founding team with the commitment and skills needed to deliver on the growth plan is essential. Accelerators look at both the team’s experience and their ability to perform under pressure and adapt quickly to changing market conditions.
Taking part in an accelerator programme offers numerous advantages that can be crucial to the success of your start-up:
These accelerators accept start-ups from any sector, provided they demonstrate innovation potential and scalability. Well-known examples include Y Combinator and, in Spain, Lanzadera and mentorDay , which work with a diverse range of projects without focusing on a specific industry.
These focus on particular industries such as healthcare, fintech, energy or mobility. This specialisation allows them to offer more tailored support and connect start-ups with sector-specific experts and resources.
Examples of specialised accelerators include Somos Naturaleza and Aurora , both focused on sustainability and environmental protection. Meanwhile, Wolaria Bioeco focuses on areas such as biotechnology and sustainable agriculture.
These are initiatives run by large companies seeking to identify and collaborate with innovative start-ups. Examples include Wayra by Telefónica and Trenlab by Renfe , which aim to develop technological solutions aligned with their strategic objectives.
Accelerators regularly open application calls, through which start-ups submit their proposals. The selection process is highly competitive and evaluates criteria such as innovation, market potential, scalability and the strength of the founding team.
Over a period of three to six months, start-ups take part in a structured programme that includes training, one-to-one mentoring, specialist workshops and regular follow-up sessions. This phase is characterised by its intensity and its focus on measurable outcomes.
The programme culminates in a presentation of results to investors and key stakeholders within the ecosystem. However, many accelerators continue to maintain contact with and support graduated start-ups, offering ongoing guidance and access to further funding rounds.
The key difference between an accelerator and an incubator lies in the development stage of your business. While incubators help turn ideas into viable businesses, business accelerators focus on scaling start-ups that are already operating in the market.
Choosing the right type of support can make the difference between the success and failure of your venture. It is important to assess honestly what stage your start-up is at and what kind of support you truly need.
If you already have a validated product, a strong team and are ready to scale, a start-up accelerator can provide the tools, connections and funding needed to reach the next level of growth.
The main difference lies in the stage at which each operates. Incubators are designed to support projects in their early stages, helping turn ideas into viable products or services. Accelerators, on the other hand, work with start-ups that already have a validated product and are looking to scale quickly.
You should consider a business accelerator if you already have a validated product, a strong team, and need tools, connections and funding to scale your business significantly.
Yes, many accelerators provide funding, as well as access to investor networks and other strategic resources to drive start-up growth.
It is crucial to honestly assess your start-up’s stage in order to choose the right type of support. Understanding whether you need to build your product or scale it can make the difference between the success and failure of your entrepreneurial journey.
