For private fund managers and issuers raising capital in the United States, the choice between Rule 506(b) and Rule 506(c) under Regulation D is often the first structural decision that shapes how a deal gets done. The two exemptions share the same federal preemption architecture — both create "covered securities" that displace state registration requirements — but they diverge sharply on two operational points: whether you can advertise the offering, and what you must do to confirm investor eligibility. Getting this wrong can void the exemption entirely.

The Core Distinction: General Solicitation

Rule 506(b) is the traditional exemption. It prohibits any form of general solicitation or general advertising in connection with the offering. Rule 506(c) — added by the SEC in 2013 as directed by the JOBS Act — lifts that prohibition entirely, allowing issuers to advertise through websites, social media, general investor conferences, or any other public medium. That is the headline difference. Everything else flows from it.

What counts as general solicitation? The SEC has provided guidance going back decades: mass mailings, public seminars where the audience is recruited through general advertising, newspaper or television announcements, and — increasingly relevant — posts on public websites or social media platforms accessible to anyone. A cold email blast to a purchased investor list is general solicitation. A targeted email to a group of investors with whom the issuer (or its principals) had a meaningful, pre-existing relationship before the offering commenced is not. The relationship must be substantive — the issuer needs to have some basis for understanding the investor's financial situation and sophistication — and it must predate the offering. Relationships cultivated specifically in anticipation of an offering do not satisfy the requirement.

What Rule 506(b) Permits and Requires

Under 506(b), an issuer can sell to an unlimited number of accredited investors and up to 35 non-accredited investors, provided those non-accredited investors are "sophisticated" — meaning they (or their purchaser representatives) have sufficient knowledge and experience in financial and business matters to evaluate the merits and risks of the investment. In practice, most managers avoid non-accredited investors entirely because the moment a non-accredited investor participates, the issuer must deliver an offering memorandum that meets specific disclosure standards that closely parallel the requirements for registered offerings, including audited financial statements in certain circumstances. The cost and complexity of serving non-accredited investors rarely justifies the expanded pool.

The accredited investor standard under Rule 501(a) remains the baseline filter. For individuals, the principal thresholds are: $1 million net worth (excluding primary residence) or $200,000 annual income ($300,000 jointly with spouse) in each of the two most recent years with a reasonable expectation of the same in the current year. The SEC's 2020 amendments also added knowledge-based qualifications — holders of certain FINRA licenses (Series 7, 65, 82), knowledgeable employees of private funds, and certain family offices and family clients.

Critically, under 506(b), the issuer does not need to independently verify accredited investor status. Self-certification — a representation in the subscription agreement or a separate questionnaire — is sufficient. The standard is reasonable belief, not verified fact. That is a meaningful operational advantage.

What Rule 506(c) Requires: Verified Accreditation

Rule 506(c) imposes a fundamentally different obligation. Because general solicitation is permitted, the SEC determined that issuers must take "reasonable steps" to verify that every investor is actually accredited. Self-certification alone is not enough. The rule provides a non-exclusive safe harbor with four specific verification methods for the income and net worth tests:

  • Income verification: Review of IRS forms (W-2s, 1099s, Schedule K-1s, tax returns) for the two most recent years, plus a written representation from the investor regarding a reasonable expectation of reaching the same income level in the current year.
  • Net worth verification: Review of bank statements, brokerage statements, or other statements of assets and liabilities dated within 90 days, along with a credit report. The net worth calculation must exclude the investor's primary residence and associated mortgage debt (up to the fair market value of the residence).
  • Third-party verification letter: A written confirmation from a registered broker-dealer, SEC-registered investment adviser, licensed attorney, or CPA that the person is accredited. This method has become the most common in practice because it shifts the verification burden to the professional and gives the issuer a clean paper trail.
  • Prior investor reliance: If the investor previously invested in an earlier 506(c) offering by the same issuer and was verified at that time, the issuer can rely on that prior verification plus a representation from the investor that he or she remains accredited.

The verification requirement applies to every investor, without exception. A 506(c) offering that includes even one unverified investor — even if that investor is plainly wealthy — loses the exemption. That is not a correctable deficiency under most circumstances.

Which Exemption Do Most Managers Actually Use?

Rule 506(b) remains dominant for institutional and professional capital raises. The reason is simple: most fund managers raising money from family offices, institutional investors, and high-net-worth individuals they know do not need to advertise publicly to reach their target investor base. The cost of maintaining a no-general-solicitation discipline — which primarily means training placement agents and restricting public marketing activity — is lower than the cost and friction of systematic verification under 506(c).

Rule 506(c) has found its niche in specific contexts: real estate crowdfunding platforms that market to the public, consumer-facing fintech deals, and issuers explicitly pursuing retail-adjacent marketing strategies where public promotion is central to the business model. Some emerging managers who lack established investor networks also use 506(c) to access broader audiences online. But for the typical private equity fund, venture fund, or hedge fund with a defined LP base, 506(b) is the default choice.

The Bad Actor Overlay

Both 506(b) and 506(c) are subject to Rule 506(d), which disqualifies issuers from relying on either exemption if any "covered person" has been convicted of securities fraud, is subject to certain SEC orders, or has other specified disqualifying events in their history. Covered persons include the issuer, its directors and executive officers, 20%-or-more beneficial owners, promoters, and compensated solicitors. Disqualifying events that predate September 23, 2013 do not trigger disqualification but do require disclosure under Rule 506(e). Every new offering requires a fresh covered persons analysis. This is not optional diligence — it is a condition of the exemption.

State Blue Sky Preemption

One of the most valuable features shared by both 506(b) and 506(c) is federal preemption of state securities registration. Under Section 18 of the Securities Act, securities offered under Rule 506 are "covered securities," which means states cannot require registration or qualification of the offering. States retain authority only to require notice filings (typically a copy of the Form D and a filing fee) and to investigate fraud. The preemption eliminates the need to navigate 50 separate state registration regimes, which would be practically impossible for a multi-state capital raise.

Form D: Timing and Amendments

An issuer relying on Rule 506 must file a Form D with the SEC electronically through EDGAR no later than 15 calendar days after the first sale of securities in the offering. The first sale is typically the date the first subscription agreement is signed and accepted, or the first capital call is funded — not the date the offering documents are distributed. Late filing does not automatically void the exemption, but the SEC and several states have issued guidance indicating that consistent or willful late filing can undermine reliance on the exemption, and some states (notably New York) impose their own consequences for untimely notice filings.

If material facts about the offering change — including the addition of a new placement agent, a change in the use of proceeds, or an increase in the total offering amount — an amendment to the Form D is required. At a minimum, an annual amendment is required for offerings that remain open for more than one year. The amendment must be filed within 15 days of the triggering change.

The One Rule You Cannot Break: No Mid-Stream Conversion

Issuers occasionally ask whether they can start a 506(b) offering and convert to 506(c) partway through if they decide they want to advertise. The answer is no. Any general solicitation or advertising that occurs while a 506(b) offering is open — even if the intent is to "convert" to 506(c) — retroactively taints the 506(b) offering. Investors who participated prior to the general solicitation may have claims based on violation of the original exemption.

If a manager wants to pursue a 506(c) strategy, that decision must be made at the outset, before any investor communications begin. Offering documents, subscription agreements, and placement agent agreements must all be structured around 506(c) from the start.

Common Mistakes That Void the Exemption

In 506(b) offerings, the most frequent errors are: (1) a principal or placement agent posting about the offering on a public social media profile or website; (2) presenting at a public investor conference where the audience includes investors with whom the issuer had no prior relationship; (3) making cold calls or sending unsolicited emails to investors without a pre-existing relationship; and (4) failing to document the pre-existing relationship before the offering commences. The SEC has brought enforcement actions based on exactly these facts.

In 506(c) offerings, the most common error is inadequate verification documentation. Specifically: accepting a self-certification questionnaire without reviewing underlying financial documents, relying on a third-party verification letter that is outdated or not from a qualified professional, or failing to re-verify investors in subsequent closings where more than 90 days have passed since prior verification (which can affect whether bank statements and asset documentation remain current).

The choice between 506(b) and 506(c) is not merely a compliance box to check — it is an operational framework that governs how you market, who you can accept, and what paperwork you must maintain for the life of the offering. Starting with the right structure avoids the most expensive kind of problem: one that surfaces during an SEC examination years after the capital was deployed.