Risks of Investing in Startups: An Angel Investor’s Guide

Brian Nichols is the co-founder of Angel Squad, an angel investing community where aspiring and active angels learn from Hustle Fund’s approach, review curated deal flow, and connect with peers.

A compelling founder pitch can make a startup check feel easier than it is. You’re committing money to a business with an uncertain future, under terms that affect whether you ever get paid. Understanding those risks gives you a firmer basis for deciding how much to commit, what questions to ask, and when to pass.

The main risks of investing in startups

Startup investing can produce a total loss, even after thoughtful diligence. You can also back a company that survives and still struggle to get your money back. The business outcome and your investment outcome are connected, but they aren’t interchangeable.

Four risks belong in the decision before you consider the upside:

• Business and financing risk. Customers may not buy, the product may fail to work, or the team may struggle to execute. A startup can also run out of cash before it reaches the progress needed to attract more funding. Another investor’s interest doesn’t guarantee the next round will close.
• Illiquidity. You may have no practical way to sell your investment when you want the money. A company can operate for years without an acquisition, public listing, or other opportunity for you to receive cash.
• Valuation and security risk. You can overpay for a promising company. Future share issuance can reduce your ownership percentage, a process called dilution. Different securities can also have different rights to proceeds when a company is sold or shuts down.
• Information and fraud risk. A pitch leaves out details. Private companies may provide less financial information and fewer ongoing disclosures than public companies. Claims can also be misleading or false.

The U.S. Securities and Exchange Commission (SEC) warns in its private-placement investor bulletin about total loss, limited disclosure, and the possibility of holding an investment indefinitely. Its crowdfunding risk guidance also highlights uncertain valuations and the possibility that other equity classes have superior rights. A small minimum check or a recognizable investor doesn’t remove those risks.

Losing money is different from getting zero back

A historical angel-return presentation by Robert Wiltbank and Wade Brooks reported that 70% of the completed investment outcomes in its 2016 study were below the amount invested. That includes partial losses. It does not mean that 70% returned zero.

The study used selected completed angel-investment outcomes, with sample and selection limitations. It isn’t a forecast for your portfolio. Prepare for partial or total loss, without counting on gains elsewhere in your portfolio to cover it.

Our co-founder and general partner Elizabeth Yin wrote in Democratizing Knowledge, “Investing in risky/uncertain things (such as startups) is a total mindwarp.” You need room for uncertainty in both your finances and your expectations.

Build risk limits into your investing process

You control the money you commit and the process you use. You don’t control a startup’s survival, future valuation, or exit date. These practices help you make deliberate decisions within that constraint.

1. Only invest money you can afford to lose

Set a total startup-investing limit before looking at individual deals. Start with your obligations, emergency savings, debt, and other financial goals. There’s no universal percentage of liquid net worth that makes startup investing appropriate.

If losing the full allocation would disrupt retirement plans, education costs, or monthly expenses, the allocation is too large. The same applies if you need the money back on a particular date.

A loss limit contains the amount you put at risk. It cannot prevent you from losing that amount. Waiting to invest while you build financial room is a valid decision.

2. Diversify beyond the company count

Spreading checks across companies limits how much one company’s failure can cost you. It leaves you exposed to risks that several companies share, such as a funding slowdown or customers cutting spending.

Elizabeth wrote in Democratizing Knowledge, “Don't try to pick a co. Select a portfolio.” Treat each check as part of your total exposure.

Consider how your investments differ across industries, customers, business models, stages, and investment dates. A collection of startups selling to the same buyer may be more concentrated than it looks. Your job and public-market holdings can add exposure to that same sector.

There’s no magic number of startup investments that guarantees adequate diversification or a positive return. More positions also mean more documents, updates, and costs to manage. Keep the portfolio within your financial and administrative capacity.

3. Set check sizes and annual budgets together

Decide how much new capital you’re willing to commit over the year, then size individual checks within that limit. Include investment-related fees and any capital you intend to reserve for later investments in existing companies, called follow-on investments.

A smaller check limits the dollars exposed to one company. It doesn’t improve that company’s odds of success. If a deal’s minimum would consume too much of your available budget, passing preserves your ability to make other decisions.

Spacing investments over time gives you opportunities to learn and revisit your circumstances. It doesn’t guarantee that you’ll avoid high prices or weak markets. Don’t increase your budget because an exciting deal arrives, or count paper gains as cash available for the next check.

4. Do diligence on the business and the security

Due diligence is the work of understanding a company and the investment being offered. It can uncover gaps or contradictions. It cannot make an early-stage business predictable, and no fixed number of minutes is enough for every deal.

Organize your questions around the sources of risk:

• Customers and product. Distinguish paid usage from pilots, expressions of interest, and projected sales. Understand why customers would choose this product over alternatives.
• Team and execution. Look for relevant experience, complementary skills, and evidence that founders learn from setbacks. A previous failed company alone doesn’t establish that a founder is unsuitable.
• Cash and financing. Understand how quickly the company spends cash, the money available, and the milestones this round is intended to fund. Include the possibility that the next round never happens.
• Terms and incentives. Understand what you’re buying, what information you’ll receive, who has decision rights, and how other investors or intermediaries are compensated.

Investor Sandy Naidu’s 5T evaluation framework organizes questions about team, target market, technology, traction, and terms. Use those questions to inform your judgment. Thoughtful investors can disagree about the answers.

A Simple Agreement for Future Equity (SAFE) is an agreement for future equity under specified conditions. It isn’t the same as owning shares today. The SEC’s SAFE investor bulletin explains that terms vary and conversion events may never occur. Conversion, sale, and dissolution provisions affect what happens to your investment.

Consider a simplified, hypothetical startup that becomes a viable business and no longer needs outside funding. If the event required to convert your SAFE never happens, the company’s progress alone doesn’t give you shares or a cash payout. The agreement matters alongside the business.

In Angel Squad, we pair curated deal flow from Hustle Fund with investing education and peer learning. Members receive company, founder, and term context, and can compare questions with other investors. Curation and community discussion don’t replace your decision or eliminate loss.

5. Keep relationships and urgency out of your budget

Investing in a friend’s or family member’s company can add pressure to a financial decision. A failed investment can strain the relationship; a successful business can still create disagreement over updates, ownership, or distributions.

Apply the same financial limits and questions you would use elsewhere. If you can’t comfortably decline, discuss the risks, or accept a total loss, keeping money out of the relationship may be the better choice.

A closing date can be real. Pressure to commit before you understand the business and terms is still a reason to pass. Missing a deal doesn’t create an obligation to rush into the next one.

6. Plan for an indefinite hold

Startup investments have no universal maturity date. An acquisition or public listing may happen earlier than expected, much later, or never. Even an exit can involve delayed payments or restrictions that affect when investors receive cash.

Private secondary transactions, where one investor sells to another, sometimes provide liquidity. The SEC’s secondary-market guidance explains that resale restrictions depend on the security and offering. Legal permission to sell also doesn’t create a willing buyer or an acceptable price.

Keep money for known future expenses outside this allocation. Treat resale as a possibility, rather than the backup plan that makes an otherwise unaffordable check feel manageable.

7. Track decisions separately from cash returns

Keep a record for each investment:

• Commitment. Company, investment date, amount, fees, and any follow-on capital.
• Documents. Signed agreements, ownership or conversion terms, and subsequent amendments.
• Reasoning. Your investment thesis, the main uncertainties, and what would change your view.
• Progress and cash. Company updates, financing events, distributions received, and confirmed write-offs.

Review those records regularly. A new financing valuation is a paper mark, not cash returned to you. Past results and current marks don’t guarantee future returns.

Records support learning and give your independent advisers better information. They don’t turn a small set of outcomes into a reliable prediction of your investing skill.

8. Be helpful within your actual role

A small investment doesn’t automatically give you a board seat, voting control, or a right to direct operations. Your rights come from the governing documents.

Offer help where you have relevant expertise, such as customer introductions, hiring referrals, or feedback the founder wants. Agree on the scope of any ongoing work. You can support a company while recognizing that you don’t control its execution, financing, or market.

Learn the process before committing more capital

You can build investing judgment through education and deal discussions before increasing your financial exposure. Membership in our community doesn’t require accredited-investor status, the regulatory qualification required for some private offerings. Eligibility to invest depends on the specific offering; membership never guarantees an allocation or return.

If you want to learn from Hustle Fund’s approach and discuss startup decisions with peers, apply to Angel Squad.

This is educational information, not investment, legal, tax, accounting, or valuation advice. Startup investments are speculative, illiquid, long-term, and may result in total loss. The governing documents determine your rights; fees, any share of profits paid to a manager, taxes, ownership changes, valuation policies, and payment timing can affect outcomes. Seek independent review from qualified legal, tax, and financial professionals before investing.