The short answer
Suitability is the requirement that a broker-dealer have a reasonable basis to believe a recommended securities transaction fits the customer's investment profile: age, other investments, financial situation and needs, tax status, objectives, experience, time horizon, liquidity needs and risk tolerance. For recommendations to retail customers, FINRA Rule 2111 gave way on June 30, 2020 to Regulation Best Interest, which keeps the same profile and adds a best-interest standard. Offering documents add their own investor standards, such as minimum net worth or income and, in some states, a cap on how much of your liquid net worth goes into one program.
At a glance
| Rules | FINRA Rule 2111 outside retail recommendations; Regulation Best Interest's care obligation for retail customers |
|---|---|
| Three parts | Reasonable-basis, customer-specific and quantitative suitability |
| Program standards | Public direct participation programs must set and disclose suitability standards |
| State limits | Some states cap an investment at 10% of liquid net worth in registered offerings |
The rule asks whether a recommendation fits you, and the firm cannot disclaim it.
FINRA Rule 2111 requires a member to have a reasonable basis to believe a recommendation is suitable, based on reasonable diligence to learn the customer's investment profile. Its supplementary material splits that into three obligations: reasonable-basis (suitable for at least some investors), customer-specific (suitable for you) and quantitative (a series of transactions is not excessive). A member 'cannot disclaim any responsibilities under the suitability rule.'
Supplementary Material .08 says Rule 2111 does not apply to recommendations covered by Regulation Best Interest, effective June 30, 2020. Reg BI's care obligation uses the same profile factors and requires a reasonable basis that the recommendation is in your best interest without putting the firm's interest first.
For public direct participation programs, FINRA Rule 2310 adds that the program must set and disclose suitability standards, that the investor must have a fair market net worth sufficient to sustain the risks, including loss of investment and lack of liquidity, and that the firm must keep documents showing how it decided.
A hypothetical investor shows how a 10% liquid net worth limit compares with the size of a typical exchange.
A non-traded REIT's Form S-11/A filed in May 2025 requires net worth of at least $250,000, or gross annual income of at least $70,000 with net worth of at least $100,000, excluding home, furnishings and cars. It adds state limits: Kentucky investors may not put more than 10% of liquid net worth into the REIT and its affiliates, while Iowa and Nebraska apply 10% caps that do not reach accredited investors.
Hypothetical: you have $3,000,000 of net worth, $1,200,000 of it liquid, and $800,000 of exchange proceeds. A 10% cap of that kind would allow $120,000, far below your exchange, which is why such limits matter mainly in registered programs. Neither Rule 2111 nor Reg BI sets a percentage, so how much of your net worth belongs in DSTs is a judgement about liquidity needs and risk tolerance; see how much net worth to put into DSTs.
It bites when accredited status is mistaken for suitability.
Being an accredited investor lets you buy a private placement; it does not show that a particular DST suits your age, income needs or time horizon. Expect the firm to ask about all of them, and answer completely, because the recommendation is judged against what you disclosed.
Rule 2111 expects the firm to obtain and analyze every profile factor unless it documents with specificity why one is not relevant, and Rule 2310 requires firms selling public programs to keep records of the basis for each suitability decision. If your circumstances change before the DST closes, such as a new need for cash, tell the firm so the recommendation can be revisited; who regulates that firm is covered at FINRA.
Related questions
If I am accredited, is a DST automatically suitable for me?
No. Accredited status is a threshold for buying an exempt offering, while suitability and Reg BI look at your whole profile, including liquidity needs and time horizon. A DST that ties up most of your liquid assets can fail that test even for a wealthy buyer.
Can I waive suitability by signing a form?
FINRA's rule says a member cannot disclaim any responsibilities under the suitability rule. Signing an acknowledgment of risk does not remove the firm's duty to have a reasonable basis for its recommendation.
Do state 10% limits apply to DST private placements?
The limits quoted above appear in a registered offering's prospectus, and the Massachusetts version there expressly excludes unregistered, exempt private offerings. A DST's PPM states its own investor standards, so read that section of the document you are given.
Sources
Checked against these publications on September 30, 2026. Rules and figures change; confirm the current version with your CPA or attorney before you act. This page is general information, not tax or legal advice.