Founding a startup begins with validating a real market need, then building the legal and financial scaffolding to pursue it. The idea itself is only the starting point. What separates a startup from a side project is the deliberate work of testing demand, incorporating a business entity, splitting equity among founders, protecting intellectual property, and raising capital. Here’s how to move through each stage.
Test Your Idea Before You Build
The most expensive mistake founders make is building a product nobody wants. Market validation is the process of gathering evidence that real people will pay for what you’re planning to create, and it should happen before you write a line of code or sign a lease.
Start by writing down your core assumptions. Who is your target customer? What problem are you solving? Why would someone choose your solution over what already exists? What are you assuming about pricing? Getting these assumptions out of your head and onto paper forces you to see which ones are guesses rather than facts.
Next, talk to potential customers. Structured interviews with people in your target market reveal whether the problem you’ve identified actually bothers them enough to pay for a fix. Ask open-ended questions about how they currently deal with the problem, what they’ve tried, and what frustrates them. You’re listening for patterns, not pitching your solution.
Research the market size by looking at sales data for similar products, the number of existing competitors, and what share of the broader market your specific segment represents. When Casper launched in 2014, its founders narrowed the total mattress market down by filtering for foam mattresses sold through e-commerce, then estimated they could capture a few percentage points of that slice. That kind of bottoms-up sizing gives you a realistic picture of the opportunity.
You can also check search volume for terms related to your product. If people aren’t searching for the thing you’re building, try searching for phrases that express the underlying intent or frustration. Low search volume doesn’t always kill an idea, but it tells you something about current awareness. Finally, once you have a working prototype, run alpha tests internally to catch bugs, then beta tests with a small group of real users who know the product is unfinished and are specifically asked to find problems.
Choose Your Business Structure
Most venture-backable startups incorporate as C corporations because that structure allows you to issue different classes of stock, which investors expect. If you’re building a small business you plan to self-fund, an LLC might make more sense. But if raising outside capital is part of the plan, a C-corp is the standard path.
Delaware is the most popular state for startup incorporation regardless of where you physically operate. The state’s corporate law is well-established, and most venture capital attorneys are familiar with its framework. The formation process involves three steps: choosing a company name, selecting a registered agent (a person or service authorized to receive legal documents on your behalf), and filing a Certificate of Incorporation with the Division of Corporations. Most founders hire a third-party registered agent service rather than serving as their own. Delaware is upfront that it is not the cheapest state to incorporate in, but the legal predictability is what draws startups there.
You’ll also need to register as a foreign entity in whatever state you actually do business, obtain an Employer Identification Number (EIN) from the IRS, and open a business bank account. Keep personal and business finances completely separate from day one. Mixing them can undermine the liability protection your corporate structure provides.
Split Equity and Set Up Vesting
How you divide ownership among co-founders is one of the most consequential early decisions. There’s no universal formula, but the split should reflect each person’s expected contribution going forward, not just who had the original idea. Consider who is working full-time versus part-time, who brings critical technical skills, and who is putting in capital.
Whatever split you agree on, attach a vesting schedule to every founder’s shares. Vesting means you earn your equity gradually over time rather than owning it all on day one. The industry standard is a four-year vesting schedule with a one-year cliff. Under this structure, a founder earns nothing during the first 12 months. At the one-year mark, 25% of their shares vest all at once. After that, an additional fraction vests each month (typically 1/48th of the total grant), until the founder is fully vested at the four-year mark.
Vesting protects everyone. If a co-founder leaves six months in, they don’t walk away with a huge chunk of the company for a few months of work. The unvested shares return to the company and can be allocated to future hires or remaining founders.
Protect Your Intellectual Property
Before any founder writes code, designs a product, or develops proprietary processes under the company’s banner, every founder should sign a technology assignment agreement (sometimes called a proprietary information and inventions assignment agreement). This document formally transfers to the company any intellectual property related to the startup’s business that a founder created before or after the entity was formed.
Without this agreement, there’s ambiguity about whether a founder personally owns the IP or the company does. That ambiguity can derail a funding round or an acquisition. The agreement is typically signed alongside a founder’s stock purchase agreement, so handle both at the same time during incorporation. If any founder previously developed technology that will be used in the startup, the assignment agreement is what moves ownership from the individual to the company.
Build a Minimum Viable Product
An MVP is the simplest version of your product that lets real customers experience and react to your core value proposition. It is not a polished product. It’s a tool for learning. The goal is to get something into users’ hands quickly so you can observe what works, what confuses people, and what features they actually care about.
For software startups, an MVP might be a single-feature app, a clickable prototype, or even a landing page that describes the product and collects email signups to gauge interest. For physical products, it could be a handmade prototype tested with a small batch of customers. The key discipline is resisting the urge to add features before you’ve confirmed that the core concept resonates.
Track how users interact with the MVP. Metrics like retention (do they come back?), engagement (how often and how long do they use it?), and willingness to pay matter far more at this stage than total signups. Use what you learn to iterate quickly.
Raise Your First Capital
Startups typically raise money in stages, with each round tied to milestones that reduce risk for the next set of investors.
- Bootstrapping and pre-seed: Many founders self-fund or raise small checks from friends, family, or angel investors to get from idea to MVP. Pre-seed rounds often range from $100,000 to $1 million, though this varies widely by industry and geography.
- Seed round: Once you have an MVP and early evidence of traction (users, revenue, or strong engagement metrics), a seed round from angel investors or early-stage venture capital firms can fund your first real growth push. Seed rounds commonly fall between $1 million and $4 million.
- Series A and beyond: A Series A round typically requires meaningful revenue or user growth and a clear path to scaling. These rounds are led by institutional venture capital firms and often range from $5 million to $15 million or more.
To raise from professional investors, you’ll need a pitch deck covering the problem, your solution, market size, business model, traction to date, team background, and how much you’re raising. Most early-stage rounds use a SAFE (Simple Agreement for Future Equity) or convertible note rather than pricing the company’s shares directly. A SAFE gives investors the right to receive equity later, typically when a priced round happens, at a discount or capped valuation.
Assemble the Right Team
Investors consistently say the team matters more than the idea at the earliest stages, because the idea will almost certainly evolve. If you’re a solo founder, think carefully about whether you need a co-founder with complementary skills. A technical founder paired with a business-oriented founder is a common and effective combination.
Early hires are disproportionately important. Your first five to ten employees set the culture, pace, and quality bar for everyone who follows. Compensate early employees with a mix of salary and stock options to align their incentives with the company’s success. Set aside an equity pool for employees, typically 10% to 20% of the company’s total shares, so you have room to make competitive offers without renegotiating the cap table every time you hire.
Set Up Financial and Operational Basics
A few operational tasks are easy to overlook but painful to fix later. Open a dedicated business bank account and run every company expense through it. Use accounting software from the start, even if your transactions are minimal. Accurate books make tax season simpler and are a prerequisite for due diligence when you raise money.
File for any licenses or permits your industry requires. If you have employees, register for state payroll taxes and set up workers’ compensation insurance. Choose a payroll provider that handles tax withholding and filings automatically. These aren’t exciting tasks, but getting them right early prevents compounding headaches as you grow.