506(b) vs. 506(c): Which Reg D Exemption Fits Your Raise?

The 506(b) vs. 506(c) choice comes down to one trade. Rule 506(b) lets a startup or fund raise unlimited money from accredited investors (plus up to 35 sophisticated non-accredited investors) without registering with the SEC, as long as it does not advertise the offering. Rule 506(c) lets the issuer advertise publicly, but the rule limits buyers to accredited investors and requires the issuer to take reasonable steps to verify that status.

Put simply, 506(b) is a private conversation and 506(c) is a public announcement with an ID check at the door. SEC data shows most Regulation D capital still goes through 506(b), and Carta notes that an overwhelming majority of private fund managers use it. In our view, 506(c) earns its paperwork when you need to market broadly and your investors will put up with verification.

Definition: Rules 506(b) and 506(c) are two exemptions under Regulation D of the Securities Act of 1933 that exempt private offerings from SEC registration; 506(b) prohibits general solicitation and allows a limited number of non-accredited investors, while 506(c) permits general solicitation but restricts the offering to verified accredited investors.

Worked example: A seed-stage founder wants to raise $2M on SAFEs. Under 506(b), she can pitch investors she was introduced to, close 20 angels and two funds, and file a Form D within 15 days of the first sale, but she cannot post "we're raising, DM me" on LinkedIn. Under 506(c), she can post that and take checks from strangers, but the rule requires her to verify each buyer before money moves: tax forms, a CPA or attorney letter, a third-party verification service, or (under the SEC staff's 2025 no-action letter) a minimum check of $200,000 plus written representations.

What both rules share

Both 506(b) and 506(c) offerings:

• Have no cap on the dollar amount raised.
• Produce "restricted securities," meaning buyers cannot freely resell them.
• Require a Form D notice to be filed with the SEC within 15 days after the first sale, according to the SEC's small business guidance on Rule 506(b) and the rule text.
• Are "covered securities" under federal law, so states cannot require registration, though they can require notice filings and fees (see blue sky laws).
• Are subject to "bad actor" disqualification, which blocks issuers whose officers, directors, or large holders have certain securities law violations.
• Rely on the same definition of accredited investor in Rule 501(a). Per the SEC's accredited investor page, individuals qualify with net worth over $1 million excluding a primary residence (alone or with a spouse or spousal equivalent), or income over $200,000 (or $300,000 jointly) in each of the prior two years with a reasonable expectation of the same this year, or by holding a Series 7, 65, or 82 license in good standing. Entities generally qualify with more than $5 million in assets or investments, or when all equity owners are accredited.

So the decision rests on two things: how you find investors, and how you confirm who they are.

Rule 506(b): the default for venture rounds

Rule 506(b) is the older, quieter path, and the usual one for venture rounds.

No general solicitation. You cannot advertise the offering to the public. In practice that means pitching people with whom you have a pre-existing, substantive relationship, or who come through warm introductions. Securities lawyers commonly warn that publishing deal terms on social media or discussing a live raise on a podcast can put the exemption at risk.

Reasonable belief, not documentary proof. Under the rule, the issuer needs a reasonable belief that each investor is accredited, and investor questionnaires are the usual tool. But the SEC's guidance on assessing accredited investors is explicit that a bare checkbox, with no other knowledge of the investor's finances or sophistication, does not meet the reasonable belief standard. The relationship, and what you actually know about the investor, carry the weight.

Up to 35 non-accredited investors. Rule 506(b)(2) allows no more than 35 non-accredited purchasers in any 90-calendar-day period, each of whom is required to have enough knowledge and experience in financial matters to evaluate the investment, alone or with a purchaser representative. The catch is disclosure: the SEC says non-accredited investors are required to receive disclosure documents generally comparable to those in Regulation A or registered offerings, including financial statement information. Many startups find that cost prohibitive and stay accredited-only.

Why it dominates. SEC data on Regulation D offerings shows that in 2025, issuers reported about $2.25 trillion sold under 506(b) versus about $143 billion under 506(c), roughly 94 percent to 6 percent (the figures include pooled investment funds). In the first quarter of 2026 the split was about $708 billion to $59 billion, or 92 to 8. VC-backed rounds tend to run on relationships, so the solicitation ban rarely bites. A well-run raise is a pipeline of warm intros anyway (our take on building a fundraising process).

Rule 506(c): advertise, then verify

Rule 506(c) was created after Congress passed the JOBS Act in 2012. The trade is simple. You may broadly solicit and generally advertise, but only accredited investors may buy, and the rule requires you to take "reasonable steps to verify" their status.

What counts as verification. Rule 506(c)(2)(ii) lists non-exclusive methods: reviewing IRS forms that report income for the two most recent years (plus a written representation about the current year); reviewing bank, brokerage, and similar statements dated within the prior three months, plus a consumer report for liabilities, for net worth; or obtaining written confirmation from a registered broker-dealer, SEC-registered investment adviser, licensed attorney, or CPA who verified status within the prior three months. Third-party verification services handle this for a fee.

The 2025 shift. On March 12, 2025, SEC staff issued a no-action letter to Latham & Watkins (often called the Latham letter) that made 506(c) far more usable for funds. According to Kirkland & Ellis's summary, an issuer may treat a high minimum investment as reasonable verification if the minimum is at least $200,000 for a natural person or $1 million for an entity, the purchaser gives written representations that it is accredited and that the minimum investment is not financed in whole or in part by a third party, and the issuer has no actual knowledge to the contrary. For fund managers with large minimums, that removed most of the paperwork friction.

Where 506(c) often fits. Public pitch events, syndications that market online, rolling funds and SPVs that recruit LPs through content, and raises where the founder's audience is the channel.

Where it can hurt. Some angels won't hand over tax returns, verification adds days and cost, and the choice is one-way. Carta's guide notes that a 506(b) offering can convert to 506(c) if the issuer wants to advertise, but an issuer that has already advertised under 506(c) cannot retroactively become a 506(b).

506b vs 506c side by side: how Rule 506(b) and Rule 506(c) compare

Form D, restricted securities, state notice filings, and bad actor rules apply equally to both.

"Why not just use 506(c) and post about it?"

It's a fair question. Founders build audiences now, and a public raise can reach investors a warm-intro process might miss. The 2025 no-action letter also made verification much lighter for large checks.

But many angel checks at pre-seed and seed sit well under the $200,000 minimum that unlocks the lighter route, so those angels still face full verification, and some will drop out rather than send a CPA letter. Once you've advertised, you can't walk back to 506(b). We'd pick 506(c) when public reach is central to the plan, not because posting about the round feels good.

506b vs 506c: which should you choose? Five questions to ask

1. Where will investors come from? If every check traces back to a relationship or a warm intro, 506(b) usually works and keeps friction low.
2. Do you need to talk publicly? Founders who want to announce a live raise, run an open demo day, or take investors from an audience generally need 506(c).
3. Will your investors verify? If your likely LPs or angels balk at documentation, 506(b) is often the easier fit. If they are institutions or family offices used to KYC, 506(c) may cost little.
4. Is anyone non-accredited? Only 506(b) allows it, and only with disclosure that usually costs more than the check is worth. Many issuers who want non-accredited money look at Regulation Crowdfunding instead.
5. Have you already talked publicly? If a founder posted deal terms before choosing an exemption, counsel will usually steer the raise to 506(c), or look hard at whether any 506(b) investor came from that public outreach.

Mistakes investors and founders commonly make

• Treating "no general solicitation" as a vibe. Many securities lawyers caution that a single public post with terms can taint a 506(b) round. Our habit of choice: talk about the company in public, and keep the raise private.
• Missing the Form D deadline. In December 2024 the SEC settled charges against three companies for failing to file Form D on time, with civil penalties from $60,000 to $195,000. It is a 15-day clock from the first sale, not from the final close.
• Forgetting state notice filings. Federal preemption does not remove state notice requirements. Each state where an investor lives may want a filing and a fee.
• Ignoring bad actor checks. Rule 506(d) disqualifies an offering if a covered person has certain securities-law violations. A common practice is to collect questionnaires from covered persons, including directors, executive officers, and holders of 20 percent or more of the voting equity.

Where we land

For founders: start from 506(b) unless you have a specific reason to go public, and decide before you post anything. That's our default; your counsel may see your raise differently.

For investors: ask which exemption an issuer is using. If a fund says 506(c), expect to verify. If a startup says 506(b) and you saw them advertise the round, that's a red flag worth raising in diligence. For the investor's read on the paperwork behind a round, see how investors read term sheets; for the founder's side, the startup fundraising guide and the guide to raising from angel investors. More investor-side explainers live in the Venture Capital section.

Accreditation stops being abstract the first time you're the one being verified. 1752vc's Emerging Angels program is an 8-week live program for accredited investors new to angel investing, and it requires SEC accredited investor status for the reasons this article has just laid out. Participants take a seat in a working fund's investment process through live diligence calls, deal reviews, monthly Investment Circles and a private community, which is where a question like "which exemption is this round using?" gets answered out loud.

The bottom line

Pick the exemption before you pick the channel. Most raises fit 506(b); a few are built for 506(c). What we'd avoid is drifting into one by accident, one post at a time.

506(b) trusts who you know.

506(c) checks who they are.

Key takeaways

• Rule 506(b) bans general solicitation, requires a reasonable belief (not just a checkbox) that investors are accredited, and allows up to 35 sophisticated non-accredited investors.
• Rule 506(c) allows public advertising but limits buyers to accredited investors whose status the issuer has verified with reasonable steps.
• SEC data for 2025 shows roughly 94 percent of Rule 506 capital raised under 506(b), so it remains the common default for venture rounds and funds.
• A March 2025 SEC staff no-action letter lets 506(c) issuers rely on minimum investments of $200,000 for individuals or $1 million for entities, plus written representations, as verification.
• Both rules require a Form D within 15 days of the first sale, state notice filings, and bad actor checks.

Frequently asked questions

What is the difference between 506(b) and 506(c)?

Rule 506(b) prohibits general solicitation, requires only a reasonable belief that investors are accredited, and allows up to 35 non-accredited sophisticated investors if they receive extra disclosure. Rule 506(c) permits public advertising but requires that each purchaser be an accredited investor whose status the issuer has taken reasonable steps to verify.

Can you advertise a 506(b) offering?

No. General solicitation or advertising of the offering is not allowed under Rule 506(b). Issuers typically limit outreach to people with whom they have a pre-existing, substantive relationship or who arrive through warm introductions. Founders can still talk publicly about the company, as long as they do not publicize the offering or its terms.

How do you verify accredited investors under 506(c)?

Common methods include reviewing two years of tax forms, reviewing recent bank or brokerage statements for net worth, or obtaining written confirmation from a licensed attorney, CPA, broker-dealer, or registered investment adviser. Since March 2025, SEC staff guidance also allows reliance on a minimum investment of $200,000 for individuals or $1 million for entities combined with written representations.

Which is better for a startup, 506(b) or 506(c)?

In practice, most startups use 506(b) because their investors come through relationships and a questionnaire, backed by real knowledge of the investor, keeps friction low. 506(c) tends to make sense when a founder needs to market the raise publicly or take money from investors they have never met, and those investors will accept verification.

Do you still need to file Form D for a 506(c) offering?

Yes. Both 506(b) and 506(c) require a Form D notice filed with the SEC within 15 days after the first sale. Because Rule 506 securities are federally covered, states cannot require registration, but most still require a notice filing and fee where investors live.

Sources

• SEC: Private Placements, Rule 506(b)
• eCFR: 17 CFR 230.506, Exemption for limited offers and sales without regard to dollar amount of offering
• SEC: Assessing Accredited Investors under Regulation D
• SEC: Accredited Investors
• SEC: Regulation D Offerings, Statistics and Data Visualizations
• SEC: Press Release 2024-210, Settled Charges for Failing to Timely File Forms D
• Kirkland & Ellis: SEC No-Action Letter Opens the Door Wider on Rule 506(c) Offerings
• Carta: 506(b) vs. 506(c) Offerings, A Guide for Private Funds