What Is a Startup and How to Start Mine: Complete Guide 2026

“Startup” isn’t a synonym for young company, or for a small business with a nice website. It’s a specific business model, with a growth and funding logic that differs from a traditional business. And starting one doesn’t begin at the notary’s office: it begins by checking that someone would actually pay for what you want to build.

This guide explains, in plain language and with real data, what a startup is, how it differs from a small business, what its stages are, how to start yours in Europe step by step (with costs and timings), the funding routes that exist, how to do marketing on a small budget, and how to get paid and manage money from day one.

What a startup is

A startup is a recently created organisation searching for a repeatable, scalable business model, usually built on technology, with exponential growth potential. The key word is “searching”: a startup is a bet on a business hypothesis, not a validated business. That’s why most fail and the ones that work grow so much.

Three characteristics define it. Scalability: it can multiply customers without multiplying costs at the same rate; an app with 10,000 users doesn’t cost ten times more to run than one with 1,000. Innovation: it solves a problem in a new way, or attacks a market nobody serves well. Uncertainty: it operates without yet knowing whether the model will work, which makes it far riskier than a business with a proven formula.

According to Startup Genome’s Global Startup Ecosystem Report, more than 90% of startups fail, and the main cause isn’t lack of technology or money, but building something nobody wants. That figure explains why the first step is never coding, but talking to customers.

How it differs from a small business

Both are small companies at the start, but their logic is the opposite. A small business seeks profitability as soon as possible with a proven model; a startup accepts early losses in exchange for growing fast with a new model.

Neither is better than the other. If your idea is to open a shop, a consultancy or a restaurant, you’re starting a small business, and that’s a perfectly good goal with a different roadmap. This guide is for anyone who wants to build something that can scale.

The stages of a startup

Understanding the stages helps you know what funding to look for and what to expect at each moment.

Pre-seed (idea and validation). There’s only an idea and a team. The work is talking to potential customers, building a minimal prototype and confirming the problem exists. Funded with personal savings and close contacts.

Seed (product and first customers). There’s a basic product and the first paying users. The goal is to show traction: month-on-month growth in users or revenue. Business angels and accelerators come in here.

Growth (Series A and beyond). The model is validated and investment goes into scaling it: more team, more marketing, new markets. This is venture capital territory.

Exit. The startup stops being one: it’s acquired by a larger company, goes public, or becomes an established business growing on its own. It can also shut down; that’s the most common outcome.

How to start mine, step by step

Step 1: find a real problem and validate it

Don’t start with the solution; start with the problem. Talk to 15-20 people who have it and ask open questions: how they solve it today, how much time or money it costs them, what they’ve tried. Don’t ask whether they’d like your idea (everyone says yes); ask about their actual behaviour. If nobody is already paying, in some form, to solve that problem, the signal is weak.

Step 2: build an MVP in weeks, not months

An MVP (minimum viable product) is the smallest version of your product that lets you check whether people use it and pay for it. It doesn’t have to be software: it can be a landing page that takes bookings, a shared spreadsheet, or you personally delivering the service by hand to the first customers. The goal is to learn fast and cheap before investing in building for real.

Step 3: form a complementary founding team

Solo-founder startups find it harder to raise money and to survive rough patches. Look for co-founders who cover what you lack: if you’re technical, someone from business; if you sell well, someone who builds. Before splitting equity, agree in writing what each person contributes and what happens if someone leaves (a shareholders’ agreement, even a simple one, prevents the conflicts that have sunk viable startups).

Step 4: define the business model

Before incorporating anything, be clear on how you’ll make money. A Lean Canvas (a single page with nine blocks: problem, solution, value proposition, customer segment, channels, revenue, costs, key metrics and unfair advantage) can be filled in during an afternoon and forces you to answer the questions an investor will ask later. If you don’t know what it costs to acquire a customer and what that customer leaves you, you’re not ready to scale yet.

Step 5: choose the legal form and incorporate

The two usual options across Europe are operating as a sole trader or forming a limited company. Sole trader is fast and cheap for validating the idea, but your personal assets answer for business debts and you can’t bring investors in. Limited company limits liability to the capital contributed, allows sharing equity between partners and investors, and is usually a requirement for national startup incentive schemes. The vast majority of tech startups incorporate as a limited company.

Minimum share capital has dropped sharply across the EU: Spain, France, Italy and Germany (through its UG form) all allow a limited company to be formed from €1, with rules that require building up reserves over time. Formation is increasingly done online through notaries or government one-stop portals, typically taking from a few days to a couple of weeks depending on the country. Budget a few hundred to around €1,500 for legal and administrative costs, varying by country and whether you use a formation agent or accountant.

The formation process, with country-specific variations, follows this sequence:

1. Reserve the company name with the national business registry.
2. Draft the articles of association and, if there are several partners, a shareholders’ agreement.
3. Open a bank account in the name of the company being formed and deposit the capital.
4. Sign the deed of incorporation before a notary, or complete the online equivalent where the country allows it.
5. Register the company with the business registry and obtain the tax identification number.
6. Register for tax and social security with the relevant authorities.

Step 6: apply for your country’s startup status

Several European countries have created a dedicated legal status for startups with tangible benefits. Spain’s Startups Law certifies “emerging companies” and gives them a reduced 15% corporate tax rate during the first profitable years, tax deferrals and better treatment of stock options. France’s Jeune Entreprise Innovante status exempts companies under 8 years old with significant R&D spending from employer social contributions. Italy’s innovative startup status gives access to a special section of the business registry, simplified procedures and R&D tax credits.

Requirements differ, but they share a pattern: the company must be young (typically under 5-8 years), innovative and scalable, headquartered in the country, and not the result of a merger or spin-off of an existing business. Check your national scheme before incorporating, since the legal form you choose can determine whether you qualify.

Funding routes

Almost no startup funds itself on savings alone. These are the real routes, from smaller to larger amounts of capital, and which stage each fits.

Personal savings and close circle (FFF: family, friends and fools). The pre-seed stage is almost always covered this way. It pays for incorporation and building the MVP. Advantage: fast and no dilution. Risk: mixing money and personal relationships; put it in writing even if it’s family.

Crowdfunding. If your product connects with a community, pre-sale or equity crowdfunding platforms let you fund development through many small contributions. Beyond money, it validates demand before you manufacture.

Accelerators and incubators. Three-to-six-month programmes offering mentoring, contacts and a small investment (commonly in the tens of thousands of euros) in exchange for a small equity stake. Their main value is the network and preparation for the next round.

Business angels. Private investors who put their own money in at seed stage in exchange for equity. They usually bring sector experience and contacts too. Most European countries have organised angel networks that review projects regularly. The guide on what an angel investor is explains how this works and how to approach them.

Public funding. At EU level, the European Investment Fund co-invests alongside private venture funds, and the European Innovation Council’s Accelerator programme offers grants and equity to deep-tech startups. Nationally, agencies such as ENISA in Spain, Bpifrance in France and Invitalia in Italy provide participative loans and grants for innovative companies. These routes are compatible with private investment and don’t dilute equity.

Venture capital. Professional funds investing third-party money in startups with a validated model and proven traction, in exchange for significant equity stakes. They come in at Series A and beyond, with amounts from several hundred thousand to millions of euros. Before deciding, funds analyse their deal flow, the set of opportunities they receive, and pick the ones that best match their thesis. The OECD tracks venture investment and startup ecosystem data across its member countries.

Marketing to get started without a big budget

Early on, the most cost-effective marketing is usually the kind that doesn’t cost money directly. Content: publish, on the channels where your customer already is, material that answers their real questions; position the startup as the one that understands the problem. Activated word of mouth: a simple referral programme (a discount or free months for bringing someone in) turns your first users into your acquisition channel. Partnerships: team up with brands, communities or creators who already have the audience you want, and offer them value in exchange for visibility.

From day one, measure which channel brings real customers, not just visits. When one works, that’s where it makes sense to start investing in paid advertising. Scaling spend on a channel that hasn’t proven anything is one of the most expensive and most common mistakes.

Getting paid and managing the money

There are two sides to money in a startup: what comes in and what goes out. Both need to be sorted from the start.

Getting paid by customers. If you sell online, a gateway like Stripe or PayPal integrates into your site in a day and accepts cards from any country. For euro transfers between individuals and businesses, SEPA Instant now moves money across Europe in seconds, and most countries also have their own instant payment apps for small amounts. If you sell to companies, you’ll need to issue formal invoices and probably collect by bank transfer. Pick the simplest thing that works for your first customer; you can complicate it later.

Managing expenses. The most common mistake in the first months is mixing business money with personal money: paying for tools with a personal card, collecting into a personal account, and discovering at quarter end that nobody knows what was spent on what. A Bitsa prepaid card solves that separation from day one without needing a business bank account yet: it’s loaded only with the budget for a specific expense (tools, advertising, subscriptions), has its own IBAN to receive transfers, and because it’s prepaid there’s no overdraft risk and no chance of an unexpected charge hitting the personal account. Once the company has an operational bank account, it remains useful as a secondary card for controlling specific budget lines.

Most common mistakes when starting a startup

Building before validating. Months of coding something nobody asked for. It’s the number one cause of failure.

Falling in love with the solution instead of the problem. If customers tell you the problem is a different one, change the solution; don’t try to convince them.

Splitting equity without a shareholders’ agreement. Dividing 50/50 “because we’re friends” without planning what happens if one leaves after six months.

Raising too early. Without traction there’s no valuation; and without valuation, whatever you raise will be small and expensive in equity.

Mixing personal and business money. It complicates accounting, tax returns and any investor due diligence later.

Scaling marketing spend without data. Paying for ads before knowing which channel converts.

Frequently asked questions about starting a startup

What’s the difference between a startup and a small business?

A startup searches for a new, scalable model, built on technology, with exponential growth and outside funding; it accepts early losses in order to grow. A small business applies a proven model, grows linearly and seeks profitability as soon as possible.

Do I need a limited company to start a startup?

To validate the idea you can start as a sole trader. A limited company becomes necessary once investors or co-founders come in, and it’s usually a requirement for national startup incentive schemes.

How much does it cost to incorporate a startup in Europe?

Minimum share capital is €1 in several countries including Spain, France, Italy and Germany. Legal and administrative costs typically range from a few hundred to around €1,500, and online formation can take from a few days to a couple of weeks depending on the country.

What benefits do national startup statuses give?

They vary by country: reduced corporate tax rates (Spain), exemptions from employer social contributions (France), simplified procedures and R&D tax credits (Italy). All require the company to be young, innovative, scalable and headquartered in the country.

How do I separate business money from personal money at the start?

A prepaid card loaded only with the business budget, with its own IBAN, lets you start that separation from day one without needing to open a business bank account yet.