According to the North American Securities Administrators Association (NASAA), promissory notes drove 161 state enforcement actions in 2021 alone, more than any other investment product category, surpassing digital assets (90 actions) and stocks (89 actions). That number does not live in a history book. It is a warning about something happening right now, to investors who consider themselves sophisticated.
I have spent years watching accredited investors get burned by instruments they did not fully understand. Private promissory notes are at the top of that list. The pitch is simple and appealing: lend money to a business, earn a fixed rate of 9 to 15 percent, get your principal back in 12 to 24 months. No stock market volatility. No complicated equity structures. Just a note with a promise attached.
The problem is that a note is only as good as the entity behind it. When that entity is running a Ponzi scheme, your "guaranteed" returns are just early investors' capital recycled back to you, paid out until the money runs out and the scheme collapses. This guide will show you how to tell the difference before you wire a dollar.
TL;DR: Private promissory notes are the single most-prosecuted investment product in state securities enforcement. Legitimate notes require SEC or state registration or a valid exemption, audited financials, a verifiable lien position, and third-party escrow. Guaranteed high returns, rollover pressure, unaudited financials, and offshore issuers are disqualifying red flags. Verify every offering against SEC EDGAR and FINRA BrokerCheck before you sign anything.
How Private Promissory Notes Work (the Legitimate Version)
A promissory note is a written promise by a borrower (the issuer) to repay a specified sum to a lender (you) at a stated interest rate over a defined period. In private markets, companies issue notes to raise capital outside the public markets. Done properly, this is a legitimate financing tool.
You extend a loan. The issuer pays you periodic interest. At maturity, the issuer returns your principal. Some notes are secured, meaning the issuer pledges specific assets (real property, receivables, equipment) as collateral. If the issuer defaults, you theoretically have a claim against those assets. Others are unsecured, which means you are a general creditor with no specific collateral backing your claim.
The word "theoretically" matters. A lien claim is only as good as the asset it encumbers, the priority of that lien against other creditors, and the competence of the trustee or escrow agent protecting it. Fraudulent issuers know that real-estate collateral language sounds credible. They use it to manufacture legitimacy while pledging the same property to multiple investors or pledging assets they do not actually own.
Legitimate private notes also come with legal restrictions on who can hold them. Notes with a maturity of less than nine months issued to large numbers of investors are generally considered securities under federal law. Notes with longer maturities are almost always securities. That classification matters enormously, because it triggers registration requirements and investor protection rules. Most fraudulent promissory note issuers skip those requirements entirely. That is where the enforcement machine catches them.
What Makes a Note Legally Compliant
Under the Securities Act of 1933, any security offered or sold in the United States must either be registered with the SEC or qualify for a specific exemption. Most legitimate private notes use one of two exemptions: Regulation D Rule 506(b) or Rule 506(c).
Rule 506(b) allows a company to raise unlimited capital from accredited investors and up to 35 non-accredited sophisticated investors, without general solicitation. Rule 506(c) permits general solicitation but restricts the offering to accredited investors only, and requires the issuer to verify each investor's status. Both rules require the issuer to file a Form D with the SEC within 15 days of the first sale. Check for that filing on SEC EDGAR.
State registration adds another layer. Most states require issuers to either register the offering at the state level or qualify for a state-level exemption. A company that claims SEC exemption but ignores state Blue Sky law requirements is operating outside the law, even if its federal paperwork looks clean.
Being an accredited investor does not protect you from fraud. It means you are presumed to have sufficient financial sophistication and resources to evaluate and absorb investment risk. The SEC's accreditation rules do not guarantee the investment is legitimate. They only govern who can legally be offered an unregistered security. Fraudsters know this and deliberately target accredited investors because the regulatory threshold gives their scheme a veneer of selectivity.
For a deeper look at how securities exemptions work in angel deals more broadly, see our guide to Regulation D Exemptions for Angel Investors.
Named SEC Enforcement Cases You Need to Know
The SEC's enforcement docket is the best fraud education available, and it is free. Here are four cases that illustrate exactly how these schemes operate.
SEC v. Matthew Motil ("Cash Flow King"): $11 Million Ponzi Scheme
The SEC charged Matthew Motil, host of the "Cash Flow King" podcast, with operating an $11 million promissory note Ponzi scheme. Motil built an audience through his podcast and social media presence, then sold promissory notes promising guaranteed returns. He paid early investors with money raised from later investors. When new capital dried up, the scheme collapsed. The Motil case shows exactly how a media brand functions as a fraud delivery vehicle.
SEC v. Christensen and Matic: $10 Million Promissory Note Scheme
The SEC charged Oregon residents Robert D. Christensen and Anthony M. Matic, along with their company Foresee Inc., with raising approximately $10 million from investors through a Ponzi-like promissory note scheme. Christensen and Matic promised investors fixed returns and told them the funds would be used for real-estate-related lending. The funds were not used as promised. Investor money paid earlier investors and funded the principals' personal expenses. The offering was unregistered. The case demonstrates that professional-sounding use-of-proceeds language (real estate, secured lending, collateralized notes) provides zero protection when the underlying operation is fraudulent.
SEC v. Anthony Mastroianni: $1.2 Million Targeting Elderly Investors
The SEC charged Anthony J. Mastroianni Jr. with a $1.2 million promissory note fraud targeting investors aged 64 to 82. Mastroianni, a FINRA-barred broker, promised returns of 50 to 175 percent and withdrew $486,000 from investor funds for personal expenses. The case proves two things: barred brokers keep operating in private markets after their bar, and promised returns of 50 to 175 percent are not a sales pitch. They are a confession. No legitimate fixed-income instrument produces those numbers.
