What Is an Angel Investor?
An angel investor is a private individual, often a successful entrepreneur, executive, or professional, who invests personal funds in startups at the earliest stages. Angels typically get involved before institutional venture capital firms, sometimes when a company is little more than a team and an idea.
Unlike venture capitalists, who invest other people's money through a fund and owe fiduciary duties to limited partners, angels answer only to themselves. That freedom lets them move fast, take unusual risks, and invest based on personal conviction or relationships.
How Angel Investing Works
Angels usually invest through convertible notes, SAFEs, or small priced equity rounds, with individual checks commonly between $10,000 and $250,000. Many participate in angel groups or syndicates that pool checks so a startup can raise a full round from dozens of individuals at once. In the United States, most angel investing is limited to accredited investors, generally meaning a net worth above $1 million excluding a primary residence or high recurring income.
Beyond money, good angels contribute mentorship, customer introductions, and credibility that helps a startup attract later venture funding. Their returns depend on a small number of outsized winners, since most early-stage companies fail.
Example
Suppose an angel invests $50,000 in a startup via a SAFE with a $5 million valuation cap, implying roughly 1% ownership. If the company eventually sells for $200 million and the angel's stake is diluted to 0.5% across later rounds, the payout is about $1 million, a 20x return on the original check. Outcomes like this are rare, which is why disciplined angels spread capital across ten or more companies.
If the startup instead shuts down after two years, the angel simply loses the $50,000, with no recourse.
Why It Matters
Angels fill a critical funding gap between founders' savings and institutional venture capital, and many iconic companies, including Google and Uber, were backed by angels first. For finance professionals, angel investing is also a common way to stay close to innovation and build a track record before joining or raising a fund.
In venture and growth interviews, understanding how angel and seed investors sit at the top of the cap table helps you reason through dilution and exit waterfalls.
