What Is Rule 506(b)?
Direct answerRule 506(b) is one of the main fundraising exemptions under Regulation D that allows startups to raise money privately without registering the offering with the U.S. Securities and Exchange Commission (SEC).
Under Rule 506(b), a company can raise an unlimited amount of money from an unlimited number of accredited investors and up to 35 non accredited investors, provided those non accredited investors are sophisticated enough to understand the risks of the investment.
A sophisticated investor is someone who has enough financial knowledge or experience to evaluate the investment, even if they do not meet the SEC's accredited investor requirements.
Rule 506(b) also allows accredited investors to generally self certify their accredited status instead of going through formal verification.
For many startups, Rule 506(b) is the exemption used for friends and family rounds, founder networks, angel investors, and existing professional relationships.
Private fundraising through trusted relationships
Think of Rule 506(b) as the traditional way startups raise money privately.
Instead of advertising your fundraising round online or inviting anyone to invest, you raise money through people you already know or people introduced through your existing network.
Because the fundraising stays private, the SEC places fewer verification requirements on accredited investors. Most accredited investors simply confirm that they meet the requirements rather than providing financial documents.
If you want to publicly promote your fundraising, Rule 506(b) is usually not the right exemption. That is where Rule 506(c) works differently.
What the SEC says, and what founders are actually asking
Rule 506(b) allows issuers to sell securities to an unlimited number of accredited investors and up to 35 non-accredited investors who meet certain sophistication requirements, provided the issuer does not use general solicitation or general advertising.
Rule 506(b) gives startups flexibility to raise money privately, but that flexibility comes with important conditions.
You can include certain non-accredited investors, but you cannot publicly market the offering, and those investors must be capable of evaluating the risks involved.
Another frequent discussion is whether friends or family members who are not accredited investors can still participate.
These discussions show that founders are often less confused about who can invest and more confused about what counts as advertising.
Many founders accidentally move toward public promotion without realizing it could conflict with the exemption they chose.
Rule 506(b) gives founders flexibility, but it also requires consistency.
The way you communicate about your fundraising should match the exemption you selected from the beginning.
Understanding that early helps prevent avoidable compliance problems later.
Keep every investor in the right place
Rule 506(b) affects much more than who invests. It influences how your entire fundraising round is managed.
When you create a Rule 506(b) fundraising round inside Cairnul, the exemption becomes the foundation for the rest of your workflow.
Investor onboarding, SAFE agreements, accreditation status, fundraising documents, cap table updates, and Form D preparation all stay connected to the same round.
As investors are added, Cairnul tracks whether they are accredited or non accredited and keeps a running count of non accredited investors against the Rule 506(b) limit of up to 35 sophisticated investors.
Because the fundraising round is already organized in one place, founders have a clearer picture of investor eligibility, required documents, and important compliance milestones without relying on spreadsheets or scattered notes.
Instead of managing fundraising one document at a time, you move through a structured workflow built around the exemption you chose.
Many founders think choosing Rule 506(b) only affects who can invest.
In reality, it also affects how you communicate about your fundraising.
A founder may carefully choose Rule 506(b) because it fits their investor network, then unknowingly post about the raise publicly on social media. That simple decision can create compliance issues because Rule 506(b) does not allow general advertising.
Another common misunderstanding is assuming every non accredited investor can participate.
Rule 506(b) allows up to 35 sophisticated non accredited investors, not an unlimited number.
Understanding these requirements before fundraising begins helps avoid unnecessary problems later.
Choose your path before you raise
Confirm that Rule 506(b) matches the way you plan to raise money.
Decide who you expect to invite before approaching investors.
Identify any non-accredited investors early and confirm they have enough financial knowledge to evaluate the investment.
Keep track of how many non-accredited investors join the round.
Avoid publicly advertising or promoting your fundraising while relying on Rule 506(b).
Keep investors, fundraising documents, and compliance tasks together in one organized workflow.
Frequently asked questions
Rule 506(b) is a Regulation D exemption that allows companies to raise money privately without registering the offering with the SEC.
It is one of the most common fundraising exemptions used by early stage startups.
Yes.
Rule 506(b) allows up to 35 non accredited investors, provided they are sophisticated enough to evaluate the investment.
There is no limit on the number of accredited investors who can participate.
A sophisticated investor is someone who has enough financial knowledge or investing experience to understand the risks of a private investment.
They do not have to be an accredited investor, but they should be able to evaluate the opportunity before investing.
No.
Rule 506(b) does not allow general advertising or public solicitation.
If you plan to publicly market your fundraising round, you should understand how Rule 506(c) works before choosing your exemption.
Generally, no.
Accredited investors typically self certify their accredited status under Rule 506(b).
Formal verification requirements generally apply under Rule 506(c), not Rule 506(b).
Run a more organized Rule 506(b) fundraising round.
Cairnul helps founders organize investors, documents, and compliance in one place, so the whole raise stays clear from first sale to close. Join the waitlist to be among the first founders to run a cleaner, more organized round.
Join the waitlistDisclaimer. This content is provided for educational purposes only and does not constitute legal, tax, or investment advice. Fundraising rules, filing requirements, and fees may vary by jurisdiction and change over time. Always confirm current requirements with qualified counsel or the relevant regulator.