506(b) vs 506(c): The Two Paths to Raising Capital Under Regulation D

506(b) vs 506(c): The Two Paths to Raising Capital Under Regulation D

TL;DR: Private placements under Regulation D raised $2.148 trillion in 2024 alone, dwarfing Regulation A and Regulation Crowdfunding combined. Nearly all of that capital moved through two rules: 506(b) and 506(c). Here is the number that surprises most people: 506(c) lets you advertise your deal publicly. 506(b) does not. Yet 506(c) captures only about 6% of Rule 506 capital raised. If advertising sounds better, you need to understand why most serious capital raisers still choose the old way.

What Regulation D Is and Why It Matters

The Securities Act of 1933 requires issuers to register securities with the SEC before selling them to the public. Registration is expensive, slow, and built for companies listing on exchanges. Congress carved out an exemption in Section 4(a)(2) for private transactions that do not involve a public offering. Regulation D, codified at 17 CFR Part 230, translates that exemption into specific, workable rules.

Rule 504 covers raises up to $10 million and sees limited use. Rule 506(b) and Rule 506(c) carry the weight. Between 2021 and 2023, issuers raised $6.2 trillion through Reg D, 23% more than SEC-registered offering proceeds over the same period. 32,544 new Reg D offerings were filed in 2024, even after the post-pandemic pullback from the 2021 peak of 46,558.

If you are raising private capital as a real estate syndicator, startup founder, or private fund manager, you are almost certainly operating under one of these two rules. Knowing the difference is not optional.

Rule 506(b): The Workhorse

506(b) is the rule most capital raisers use, and the reason is practical: it asks the least of you at the start, as long as you keep your deal private.

Under 506(b), you can raise from an unlimited number of accredited investors. You can also include up to 35 non-accredited investors per offering, provided each one is sophisticated enough to evaluate the merits and risks on their own. If you include any non-accredited investors, you must give them disclosure documents that match the depth of a Regulation A offering: financials, risk factors, use of proceeds, and management background. That documentation burden is real and should not be minimized.

The defining constraint of 506(b) is the ban on general solicitation. You cannot advertise your deal publicly. You cannot post terms on social media. You cannot send cold emails to strangers or speak about an open offering at a public seminar. Every investor must have a substantive, documented pre-existing relationship with you before you discuss the investment. Substantive means the kind of relationship where you already know enough about each other to assess fit, not a LinkedIn connection from last Tuesday.

In exchange for that discipline, 506(b) keeps verification simple. You need only reasonable belief that your investors are accredited. In practice, that means having each investor sign an attestation in the subscription documents. You do not need to independently verify their tax returns or bank statements. That single fact explains much of why 506(b) still dominates.

The fatal risk in 506(b) is inadvertent general solicitation. One social media post describing your deal terms. One email to someone without a genuine pre-existing relationship. One casual mention at a public event. Any of these can invalidate your exemption and require you to offer rescission to every investor in the raise. Document your relationships before they are ever tested.

Rule 506(c): What the JOBS Act Changed

The Jumpstart Our Business Startups Act (Public Law 112-106) was signed on April 5, 2012. Section 201(a) directed the SEC to lift the ban on general solicitation for Rule 506 offerings sold exclusively to accredited investors. The SEC finalized the rules on July 10, 2013, and Rule 506(c) became effective on September 23, 2013.

Under 506(c), you can advertise. Run social media ads. Build a podcast around your fund. Blast an email list. Invite strangers to a webinar about your deal. Cold outreach to potential investors you have never met is explicitly permitted.

The tradeoff is verification. Under 506(c), you must take reasonable steps to independently verify that every investor is actually accredited. Self-certification, the subscriber checkbox that works for 506(b), is not sufficient. The SEC provides four safe-harbor methods:

• Income test: review W-2s, 1099s, or tax returns from the two most recent years plus a written income representation.
• Net worth test: review recent bank and brokerage statements plus a credit report and liability representation.
• Third-party letter: obtain written confirmation from a registered broker-dealer, registered investment adviser, licensed attorney, or CPA.
• Prior verification re-use: rely on a verification completed within the past five years if the investor confirms no material change in status.

Third-party verification platforms charge $50 to $100 per investor. Attorney or CPA confirmation letters run $250 to $500 each. For a 20-investor raise, that is $1,000 to $10,000 in verification costs before you touch PPM drafting fees. Those numbers compound quickly as your investor count grows.

There is one more hard rule under 506(c): no non-accredited investors. No exceptions for sophisticated investors. No 35-person carve-out. If even one non-accredited investor slips through, the exemption is at risk.

506(b) vs 506(c): Head-to-Head

Factor	506(b)	506(c)
General Solicitation	Prohibited. Pre-existing relationships required for all investors.	Permitted. Advertising, social media, and cold outreach are all allowed.
Investor Types	Unlimited accredited + up to 35 non-accredited sophisticated investors.	Accredited investors only. No exceptions.
Verification Standard	Reasonable belief. Investor self-certification in subscription docs is sufficient.	Independent verification required: tax returns, financial statements, third-party letter, or $200K/$1M minimum investment (March 2025 guidance).
Pre-Existing Relationship	Required before any specific investment discussion.	Not required.
Non-Accredited Disclosure	Full Regulation A-level PPM required if any non-accredited investors participate.	Not applicable.
Compliance Cost	Lower. Primary cost is PPM drafting ($5,000–$20,000). No per-investor verification fees.	Higher. Per-investor verification ($50–$500 each) plus documentation overhead for every LP.
Blue Sky	Equal for both. Both are covered securities under NSMIA, so state registration is preempted. However, 46 states still require notice filings with fees up to $2,000+ per state.
Best For	Operators with established investor networks, real estate syndicators, emerging managers with repeat LPs.	Established managers scaling beyond their network, online investment platforms, brand-driven marketing campaigns.

Why 506(b) Still Dominates

In the July 2022 to June 2023 period, 506(b) raised approximately $2.7 trillion. 506(c) raised roughly $169 billion, about 6% of the combined total. That ratio has held with minor variation since 506(c) launched in 2013.

I have talked to enough syndicators and fund managers to know this is not ignorance. Three practical forces keep 506(b) in the lead.

First, the verification cost math works against 506(c) at typical deal sizes. The median Reg D raise involves a relatively small number of investors. When you multiply per-investor verification costs across 15 to 30 LPs, the dollar total matters, especially at early stages when margins are thin. 506(b)'s self-certification approach costs essentially nothing beyond the subscription document itself.

Second, most serious capital raisers already have a network. If you have spent years building relationships with investors, the pre-existing relationship requirement is not a burden. It describes how you already operate. You are not advertising to strangers. You are calling people who know you and trust you. Those investors move faster and ask fewer questions.

Third, 506(b) lets you include non-accredited sophisticated investors. That is meaningful flexibility for operators whose best early LPs do not yet meet the accredited investor income or net worth thresholds. 506(c) eliminates that option entirely.

The advertising freedom of 506(c) is genuinely valuable. It is primarily valuable for operators who have exhausted their existing network and need new investor acquisition at scale. For everyone else, it solves a problem most capital raisers do not have.

The March 2025 SEC Update

On March 12, 2025, the SEC Division of Corporation Finance issued a no-action letter to Latham & Watkins LLP that represents the most significant relaxation of 506(c) verification requirements since the rule launched in 2013. K&L Gates published a detailed analysis of the guidance shortly after it dropped.

Here is what changed. Issuers can now use minimum investment thresholds as a verification substitute. If a natural person invests at least $200,000, and if a legal entity invests at least $1,000,000, that amount alone satisfies the verification requirement, provided the investor gives two written representations: that they are accredited, and that their investment is not financed through a third party specifically to hit the minimum threshold.

The SEC's reasoning is straightforward. Someone who can commit $200,000 from their own resources is, by any practical measure, accredited. Requiring that person to also submit two years of tax returns adds friction without adding information. Morgan Lewis confirmed the guidance eliminates one of the most friction-heavy steps in the 506(c) compliance process.

This matters most for institutional-grade raises. A fund targeting $50 million with a $500,000 minimum has roughly 100 investors. The old verification process was genuinely burdensome at that scale. The new threshold shortcut makes 506(c) meaningfully more attractive for that segment.

For a 15-investor real estate syndication with a $50,000 minimum, the math does not change enough to shift the calculus. 506(b) still wins there.

One caution: this guidance has not been codified into formal rule text. It is a no-action letter. It is persuasive, widely cited, and the best available guidance, but it is not a rule change. Consult your securities attorney before relying on it exclusively.

Which to Choose: A Decision Framework

The choice between 506(b) and 506(c) comes down to four questions.

Do you already have an investor network? If you have documented relationships with enough accredited investors to fill your raise, start with 506(b). The pre-existing relationship requirement describes what you already have. The verification savings alone justify the choice.

Do you need to advertise publicly to find investors? If you are building an investor base from scratch, running a crowdfunding-adjacent platform, or targeting strangers through digital advertising, 506(c) is the right path. General solicitation is the product you are buying.

What is your minimum investment size? After March 2025, if your minimum is $200,000 or higher for individuals (or $1,000,000 for entities), 506(c) verification becomes far less burdensome. The threshold shortcut makes compliance manageable for institutional-grade offerings.

Will any of your investors be non-accredited? If yes, 506(c) is off the table. You need 506(b), and you need to prepare proper disclosure documents for those investors before they sign anything.

One rule you cannot break: you cannot mix the two in a single offering. If you advertise publicly even once, even inadvertently, you cannot later claim 506(b) protections for that same raise. We have covered the rules around switching exemptions mid-raise in more depth separately.

Risks You Need to Understand

Under 506(b), inadvertent general solicitation is the most common way a raise collapses legally. One social media post describing deal terms, one email to someone without a genuine pre-existing relationship, one casual mention at a public event can each be enough to invalidate the exemption. The SEC applies a facts-and-circumstances test. The only defense is disciplined documentation: record every investor relationship and note when it started before the offering begins.

Under 506(c), failing to complete proper verification is not a minor paperwork error. Self-certification alone is never sufficient. If the SEC examines your offering and finds investors signed only a checkbox without supporting tax documents, third-party letters, or minimum investment representations, you can lose the exemption entirely. Paul Hastings has outlined the scope of that enforcement exposure in detail.

Both rules require a Form D filing with the SEC within 15 calendar days after the first sale, and both require state blue sky notice filings. Federal preemption under NSMIA exempts you from state registration, but 46 states still require a separate notice filing. Fees can reach $1,900 in New York alone. A multi-state raise typically costs $3,000 to $10,000 in blue sky fees. Requirements vary significantly by state and are updated regularly.

Bad actor disqualification applies equally to both rules. Before you launch any Reg D offering, run a diligence check on every covered person: the issuer, directors, executive officers, shareholders holding 20% or more of voting securities, promoters, and any compensated solicitors. A prior felony conviction or qualifying SEC enforcement action can disqualify your entire offering retroactively. Our guide to bad actor disqualification under Rule 506(d) walks through exactly who you need to check.

If you are raising from investors outside the United States, none of this analysis covers those investors. Each foreign jurisdiction has its own securities laws. Cross-border capital raises require separate analysis before you approach any international investor.

The conventional narrative frames 506(c) as the future and 506(b) as a relic. The data says otherwise. After more than a decade of coexistence, 506(b) still carries 94% of Rule 506 capital. That is not inertia. It is a market expressing a clear preference for the compliance structure it can absorb at the deal sizes it actually does. The March 2025 no-action letter is the first real sign the calculus may shift at the institutional end. If 506(c) share breaks above 10% in the next Form D statistics cycle, that will mark the first time advertising freedom has genuinely moved the needle. Know both rules, choose deliberately, and document everything.

Author Disclosure: Jeff Barnes, MBA has no personal position in any company, fund, or platform named in this article. Angel Investors Network has no current commercial relationship with any party mentioned. AIN provides marketing and education services, not investment advice. Past performance does not guarantee future results. All investments involve risk, including loss of principal.