How Startup Funding Stages Work

From pre-seed funding to Series E, here's how each startup funding stage works.

April 30th, 2019   |    By: The Startups Team    |    Tags: Funding

As and Fundable founder Wil Schroter likes to says, “There’s not a lot of ‘fun’ in funding.”

Raising equity funding for your startup is a long, difficult, and often demoralizing process. However, if you’re successful, you walk away with money that will help your startup grow and become everything you hope it could become.

But despite these challenges, thousands of startups raise funding every year, implying that the potential rewards outweigh the guaranteed strife and risk. Here’s an outline of what a startup founder can expect at each startup funding stage.

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Pre-Seed Funding

Pre-seed funding is the earliest startup funding stage, so early that many people don’t include it in the cycle of equity funding.

At this stage, founders are working with a very small team (or even by themselves) and are developing a prototype or proof-of-concept. The money to fund a pre-seed stage typically comes from the founders themselves, their families, friends and family, and maybe an angel investor or an incubator.

Pre-seed funding is a relatively new part of the startup lifecycle, so it’s difficult to say how much money a founder can expect to raise during the pre-seed period.

Seed Funding

What is seed funding?

The very first money that many enterprises raise — whether they go on to raise a Series A or not — is seed funding. (Some startups may raise pre-seed funding in order to get them to the point where they can raise a traditional seed round, but not every company does that.)

The name of this startup funding stage is pretty self explanatory: This is the seed that will (hopefully) grow the company. Seed funding is used to take a startup from idea to the first steps, such as product development or market research.

Seed funding may be raised from family and friends, crowdfunding, angel investors, incubators, and venture capital firms that focus on early-stage startups. Angel investors are perhaps the most common type of investor at this stage.

This is also the end point for many startups. If they can’t gain traction before the money runs out (also known as running out of runway), then they’ll fold.

On the other hand, some startups decide that they’re not interested in raising more money — that the level they reach with seed money is good enough or that they’re able to grow more without more investment — and choose to stop raising funding rounds at this point.

How much money is involved in seed funding?

Seed funding is usually between $500,000 and $2 million, but it may be more or less, depending on the company. The typical valuation for a company raising a seed round is between $3 million and $6 million.

Series Funding

Series funding is a series of startup funding stages that follow one after the other and includes Series A, B, C, D, and sometimes E. In each stage, the startup raises more money and increases their valuation. The one exception is a down round, which we talk about in Series D.

What is Series A funding round?

Once a startup makes it through the seed stage and they have some kind of traction — whether it’s number of users, revenue, views, or whatever other key performance indicator (KPI) they’ve set themselves — they’re ready to move on to the next startup funding stage, which is Series A.

In a Series A round, startups are expected to have a plan for developing a business model, even if they haven’t proven it yet. They’re also expected to use the money raised to increase revenue.

How much money is involved in a Series A funding round?

Because the investment is higher than the seed round— usually $2 million to $15 million — investors are going to want more substance than they required for the seed funding, before they commit.

It’s no longer acceptable to have a great idea — the founder has to be able to prove that the great idea will make a great company. The typical valuation for a company raising a seed round is $10 million to $15 million.

Series A rounds (and all subsequent rounds) are usually led by one investor, who anchors the round. Getting that first investor is essential, as founders will often find that other investors fall into line once the first one has committed.

However, losing that first investor before the round is closed can also be devastating, as other investors may also drop out.

Series A funding usually comes from venture capital firms, although angel investors may also be involved. Additionally, more companies are using equity crowdfunding for their Series A.

Series A is a point where many startups fail. In a phenomenon known as “Series A crunch,” even startups that are successful with their seed round often have trouble securing a Series A round.

According to the firm CB Insights, only 46 percent of seed funded companies will raise another round. That means that this is the end point for the majority of early stage startups.

Series B Funding

What is Series B funding round? A startup that reaches the point where they’re ready to raise a Series B round has already found their product/market fit and needs help expanding.

The big question here is: Can you make this company that you’ve created work at scale? Can you go from 100 users to a 1,000? How about 1 million?

The expansion that occurs after a Series B round is raised includes not only gaining more customers, but also growing the team so that the company can serve that growing customer base.

In order to be competitive, any startup needs to hire excellent people in a range of roles. It’s no longer possible for the founder to “wear all the hats,” so raising enough money for competitive salaries is essential.

How much money is involved in a Series B funding round?

A Series B round is usually between $7 million and $10 million. Companies can expect a valuation between $30 million and $60 million.

Series B funding usually comes from venture capital firms, often the same investors who led the previous round. Because each round comes with a new valuation for the startup, previous investors often choose to reinvest in order to insure that their piece of the pie is still significant.

Companies at this stage may also attract the interest of venture capital firms that invest in late-stage startups.

Series C Funding

What is Series C funding round?

Companies that make it to the Series C startup funding stage are doing very well and are ready to expand to new markets, acquire other businesses, or develop new products.

Commonly, Series C companies are looking to take their product out of their home country and reach an international market. They may also be looking to increase their valuation before going for an Initial Public Offering (IPO) or an acquisition.

“Once a company has built a product that’s become a darling in the market, that’s when the Private Equity and Investment Bankers show up,” Schroter says. “These folks aren’t looking for a lot of risk – they let the angel investors and venture capital firms deal with that. They are looking to put massive sums of money into companies that are already winning to allow them to secure their leadership position.”

Series C is often the last round that a company raises, although some do go on to raise Series D and even Series E round — or beyond.

However, it’s more common that a Series C round is the final push to prepare a company for its IPO or an acquisition.

How much money is involved in a Series C funding round?

For their Series C, startups typically raise an average of $26 million. Valuation of Series C companies often falls between $100 million and $120 million, although it’s possible for companies to be worth much more, especially with the recent explosion of “unicorn” startups.

Valuation at this stage is based not on hopes and expectations, but hard data points. How many customers does the company have? What’s it’s revenue? What’s it’s current and expected growth?

Series C funding typically comes from venture capital firms that invest in late-stage startups, private equity firms, banks, and even hedge funds.

This is the point in the startup lifecycle where major financial institutions may choose to get involved, as the company and product are proven. Previous investors may also choose to invest more money at the Series C point, although it is by no means required.

Series D Funding

What is Series D funding round?

A series D round of funding is a little more complicated than the previous rounds. As mentioned, many companies finish raising money with their Series C. However, there are a few reasons a company may choose to raise a Series D.

The first is positive: They’ve discovered a new opportunity for expansion before going for an IPO, but just need another boost to get there. More companies are raising Series D rounds (or even beyond) to increase their value before going public. Alternatively, some companies want to stay private for longer than used to be common. Each of these are positive reasons to raise a Series D.

The second is negative: The company hasn’t hit the expectations laid out after raising their Series C round. This is called a “down round,” and it’s when a company raises money a lower valuation than they raised in their previous round.

A down round may help a company push through a tricky time, but it also devalues the stock of the company. After raising a down round, many startups find it difficult to raise again, as trust in their ability to deliver on their promises has eroded. Down rounds also dilute founder stock and can demoralize employees, making it difficult to get back ahead.

How much money is involved in a Series D funding round?

Series D rounds are typically funded by venture capital firms. The amount raised and valuations vary widely, especially because so few startups reach this stage.

Series E Funding

If few companies make it to Series D, even fewer make it to a Series E. Companies that reach this point may be raising for many of the reasons listed in the Series D round: They’ve failed to meet expectations; they want to stay private longer; or they need a little more help before going public.

Mezzanine Financing and Bridge Loans

Mezzanine financing (also known as bridge loans) is a startup funding stage that’s all about preparing the startup for that final push to an exit. It’s a hybrid of loan financing and equity financing. Mezzanine investors don’t require any hard collateral, but they do often ask higher interest — usually between 12 and 20 percent — than a traditional bank loan. They also ask for the right to convert their equity if you default on the loan.

Because of the higher interest rate, mezzanine financing can be riskier than other types of startup funding However, the goal of mezzanine financing is to get the startup to exit more quickly, so for companies that are close but just need an extra boost before their IPO or acquisition, this type of financing can be extremely valuable.


An initial public offering (IPO) is often the last stage of startup funding that companies go through. With an IPO, investment bankers commit to selling a certain amount of shares for a certain amount of money, thereby raising money for the company. The shares are traded on the stock exchange.

IPOs are seen as risky investments, as there’s no data yet on how the shares will trade. But when the IPO goes well, investors stand to gain a lot of money and companies get a boost in reputation and pride. When it goes poorly, however, the opposite happens — investors lose money and the company may see their prospects decline in other areas as well.

Other funding sources

Don’t miss our guides to the full range of startup funding options, below.

Federal Government Grants for Small Business: What You Need to Know

Venture Capital: What It Is & Why Use It

Series A, B, C, D, and E Funding: How It Works

What is Crowdfunding?

Types of Crowdfunding: Donation, Rewards, and Equity-Based

Private Investors for Startups: Everything You Need to Know

Convertible Notes (aka Convertible Debt): The Complete Guide

Small Business Startup Loans: What You Need to Know

About the Author

The Startups Team

Startups is the world's largest startup platform, helping over 1 million startup companies find customers, funding, mentors, and world-class education.

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