506(b) vs. 506(c): Which Fits Your Syndication?

Rule 506(b) bans general solicitation but lets you accept up to 35 sophisticated non-accredited purchasers in any 90 calendar days. Rule 506(c) lets you advertise publicly, but every buyer must be accredited and you must take reasonable steps to verify it. The choice comes down to how you find investors. If you are the sponsor, we built DoorRaise to run either route for apartment raises.

This post compares the two exemptions. For the full deal picture, start with our guide to real estate syndication.

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

The difference is marketing versus verification. 506(b) is quiet and flexible about who can buy. 506(c) is public and strict about who can buy. Both are part of Regulation D, and both have no dollar cap. Our post on what Regulation D is covers the framework.

Topic	Rule 506(b)	Rule 506(c)
Public marketing	Not allowed	Allowed, including social media
Who can invest	Unlimited accredited investors, plus up to 35 non-accredited purchasers in any 90 calendar days	Accredited investors only
Verification	Reasonable belief that each buyer qualifies; no mandated documents	Issuer must take reasonable steps to verify each buyer
Extra disclosure	Required for non-accredited purchasers (Rule 502(b))	Not applicable, since no non-accredited buyers
Form D	Within 15 days after the first sale	Within 15 days after the first sale
Bad actor check	Applies	Applies

The rule text is at 17 CFR 230.506. The SEC's own summaries are on its pages for Rule 506(b) and Rule 506(c).

When should you use Rule 506(b)?

Use 506(b) when your investors already know you and you will not advertise the deal. It also fits when you want room for a few experienced investors who are not accredited. Rule 502(c) prohibits general solicitation in a 506(b) offering.

SEC staff describes the way to stay out of general solicitation as offering only to people with whom you have a pre-existing, substantive relationship. In the SEC's general solicitation building blocks, that means the relationship formed before the offering started, and you have enough information to evaluate, and actually do evaluate, the person's status. Our post on whether followers can invest in a 506(b) deal goes deeper.

A 506(b) deal fits:

Friends, family and past investors you have already talked to about money.
Sponsors who want to include a few non-accredited but sophisticated people.
Deals you will never post about publicly.

If any non-accredited person buys, the added disclosure duties apply. Under Rule 502(b), the information must be furnished a reasonable time before the sale, and it includes financial statements. Each non-accredited buyer must also have the knowledge and experience to evaluate the investment, alone or with a purchaser representative.

When should you use Rule 506(c)?

Use 506(c) when you will market the deal: a YouTube video, an Instagram post, a podcast mention or a public deal page. Every purchaser must be accredited, and the issuer must take reasonable steps to verify that. Our post on what general solicitation is explains what counts as advertising.

Rule 506(c)(2)(ii) lists non-exclusive methods for individuals:

Income. Review IRS forms (W-2, 1099, Schedule K-1 or Form 1040) for the two most recent years, plus a written representation that the person reasonably expects to reach the level this year.
Net worth. Review asset documents such as bank and brokerage statements, plus a consumer report from a nationwide agency dated within the prior three months, plus a written representation that all liabilities are disclosed.
Professional letter. Written confirmation within the prior three months from a registered broker-dealer, an SEC-registered investment adviser, a licensed attorney in good standing or a CPA in good standing.

On March 12, 2025, SEC staff issued a no-action letter on a fourth approach: a high minimum plus written statements. See accredited investor verification for the details, and what a 506(c) offering is for the full picture.

What do both exemptions require?

Both need the same core compliance work: a timely Form D, state notice filings, a bad actor check and honest disclosure. The exemptions differ on marketing and investors, not on these basics.

Form D. Rule 503 requires filing no later than 15 calendar days after the first sale, electronically. See Form D filing.
State notice filings. Rule 506 securities are covered securities under 15 U.S.C. 77r, so states cannot require registration. They can still require a notice, consent to service of process and a fee. See blue sky notice filings.
Bad actor check. Rule 506(d) disqualifies offerings when a covered person, such as an issuer, managing member, 20% owner, promoter or paid solicitor, has a disqualifying event. See the bad actor rule.
Antifraud rules. These apply to every private placement, whether or not you use a PPM. See our post on the private placement memorandum.

How popular is each route? (SEC data)

506(b) is used far more often than 506(c) across all industries. The SEC's Regulation D offering statistics show 30,315 Rule 506(b) offerings with $2,248.4 billion reported sold in 2025, and 3,989 Rule 506(c) offerings with $142.6 billion.

By that count, 506(c) dollars were about 6.3% of 506(b) dollars (142.6 / 2,248.4). The SEC warns its figures could understate the true totals because some issuers may not have filed Forms D. These numbers cover every industry, not only real estate.

A worked example (illustrative)

Take a sponsor raising $2,200,000 of equity for a 48-unit building. All numbers are illustrative.

Path A, 506(b). The sponsor knows 24 people well. Twenty are accredited at $100,000 each (20 x $100,000 = $2,000,000). Four are not accredited but experienced, at $50,000 each (4 x $50,000 = $200,000). Total: $2,200,000. The four non-accredited buyers are under the 35 cap, and they are 9.1% of the dollars ($200,000 / $2,200,000). The sponsor must give the four the added Rule 502(b) disclosure, including financial statement information, and may not advertise.

Path B, 506(c). The sponsor posts about the deal publicly and 22 people respond at $100,000 each (22 x $100,000 = $2,200,000). All 22 must be accredited and verified before they invest. The four experienced non-accredited friends cannot join. The sponsor gains reach, and loses those four.

Neither path is better in the abstract. Path A fits a sponsor with a warm list. Path B fits a sponsor whose best investors are strangers who found the content.

How do you choose? A decision checklist

Choose by answering four questions in order. Your attorney should confirm the final call for your deal.

Will you post about the deal or promote it to people you do not know? If yes, plan on 506(c).
Do you need non-accredited investors? If yes, and you can avoid advertising, 506(b) is the only Rule 506 route that allows them. Compare options without accreditation if you cannot.
Can you document a real, pre-existing relationship with each prospect? If not, 506(b) gets risky.
Can your investors produce verification documents quickly? If they will not, 506(c) will slow you down.

Our take

Our take: most first-time sponsors should decide based on their audience, not on which rule sounds more flexible. If your first 20 investors are people you already know, 506(b) is usually the simpler fit. If your plan depends on content, a podcast or social posts, then 506(c) is the honest label for what you are doing.

We also think sponsors underestimate how fast a 506(b) deal can drift into general solicitation. One public post describing terms can change your exemption. Pick a route at the start, write down why, and hold to it.

Trade-offs and who this is not for

Each route costs you something, and neither fits every sponsor.

506(b) is not for sponsors who need public reach. If you cannot document relationships, you are stretching the rule.
506(c) is not for sponsors with non-accredited friends. Those buyers cannot join, and verification adds friction for every investor.
A common mistake: posting publicly about a deal and still calling it 506(b). Another is treating a checkbox as verification under 506(c).
Switching mid-raise is hard. Talk to counsel before you change routes after anything has been published.

How DoorRaise fits in

DoorRaise helps sponsors raise equity for apartment buildings with 5+ units from people who already trust them, under Rule 506(b) or 506(c). We are software, legal document preparation, escrow coordination and verification services. We are not a law firm, broker-dealer, investment adviser, funding portal, bank or escrow agent, and we do not hold investor money. Funds go to an independent escrow agent named on each deal.

Our pricing is three flat fees, with 0% of the raise or profits. The $500 setup fee covers forming the deal's LLC, investor documents from attorney-approved templates, an escrow account, the deal page and accreditation checks on every investor. The $5,000 closing fee, paid from the funds raised and only if the deal closes, covers attorney review of the offering documents, sponsor and property checks (including a Rule 506(d) check), the Form D filing and electronic signing. The $3,500 yearly fee covers bookkeeping, the tax return and K-1s. State filing fees are included in the $5,000 closing fee. See pricing.

Ready to raise? Create your free sponsor page or see pricing.

FAQ

What is a 506(c) offering?

It is a Regulation D offering that can be advertised publicly, but every purchaser must be accredited and the issuer must take reasonable steps to verify that status.

Can I advertise a 506(b) offering?

No. Rule 502(c) bars general solicitation in 506(b) offerings. The usual way to stay inside the rule is to offer only to people you have a pre-existing, substantive relationship with.

Can non-accredited investors invest in a 506(c) deal?

No. Every purchaser in a 506(c) offering must be accredited.

Is 506(b) or 506(c) better for real estate?

Neither is better in general. 506(b) suits sponsors with an existing network. 506(c) suits sponsors who want to market publicly, and it brings a verification duty.

Do both 506(b) and 506(c) require a Form D?

Yes. Both require a Form D within 15 calendar days after the first sale, and the SEC charges no fee to file it. States may charge their own notice fees.

Can I verify an investor by their word alone in 506(b)?

The rule does not mandate documents in 506(b), but you still need a reasonable belief that each buyer is accredited, or sophisticated if not. Many sponsors use questionnaires and ask for backup. Ask your attorney what is reasonable for your deal.

Sources

This article is general information as of October 2026, not legal, tax or investment advice. Talk to a securities attorney before you launch an offering. DoorRaise is not a law firm, broker-dealer, investment adviser or funding portal.