Quick Answer
A contingency offering (all-or-none, part-or-none, or mini-max) triggers two SEC rules. The prohibited-representations rule requires a prompt refund if the represented amount is not sold by the deadline. The investor-payment rule requires the broker-dealer to hold investor funds in a segregated agent/trustee account, or with a bank that has agreed in writing to hold them in escrow.
Now that you understand which commitment types are contingency offerings (all-or-none, mini-max, part-or-none), the next layer is the investor-protection regime that attaches the moment the contingency representation is made.
Two SEC rules govern the structure and apply automatically. The prohibited-representations rule reaches any person making the representation; the investor-payment rule specifically binds the broker, dealer, or municipal securities dealer handling the money. Neither can be drafted around.
How Do the Two Rules Compare Side by Side?
| Rule | What It Governs | Trigger | Core Requirement |
|---|---|---|---|
| Prohibited representations rule | The "all-or-none / mini-max" LABEL and the refund promise | Any AON, part-or-none, or mini-max representation in offering documents | Prompt refund of investor funds if the represented amount is not sold by the specified date |
| Investor-payment rule | How a broker-dealer participating in a distribution other than a firm commitment must HANDLE investor funds it accepts | Any distribution other than a firm-commitment underwriting; the escrow/segregation mechanic applies specifically when payment is contingent on a further event (e.g., AON, part-or-none, mini-max) | Funds promptly transmitted to those entitled to them, OR, if contingent, promptly deposited in a segregated agent/trustee account or transmitted to a bank that has agreed in writing to hold them in escrow, then promptly transmitted or returned once the contingency resolves |
Think of it this way: The prohibited-representations rule polices what the underwriter SAID; the investor-payment rule polices what the underwriter DOES with the money. The first makes the label binding; the second makes sure the cash is recoverable if the label is not honored.
Exam Tip: Gotchas
- The prohibited-representations rule attaches automatically once the AON, part-or-none, or mini-max label is used; issuers and underwriters cannot opt out by drafting around it. The investor-payment rule has a broader, separate trigger (any distribution other than a firm commitment); the contingency label only decides which of its two payment-handling paths applies.
- A plain best-efforts offering with NO contingency representation does NOT need the segregated-account or escrow path. It still falls under the investor-payment rule, just through the simpler "promptly transmit to those entitled" path; the contingency decides the path, not whether the rule applies at all.
What Does the Prohibited-Representations Rule Require?
The prohibited-representations rule makes it a manipulative and deceptive practice to label an offering as all-or-none, part-or-none, or minimum-maximum unless two conditions are satisfied:
- Prompt refund is made to purchasers if the represented amount of securities is not sold at the specified price within the specified time, AND
- The total amount due is received by the seller by a specified date (the seller is usually the issuer, but the rule's own text says "seller," not "issuer")
In effect, the rule enforces the contingency promise. An underwriter cannot represent an offering as AON and then quietly keep going, or keep the investor money, if the contingency fails.
The rule does NOT apply to an offering where the seller has a firm commitment from underwriters (subject only to customary conditions, including "market outs") to purchase all the securities being offered. A true firm-commitment deal carries no contingency to police.
Think of it this way: The rule treats the AON or mini-max label as an enforceable promise to the investor. Use the label and you must honor the refund mechanic; refuse to honor it and you have made a deceptive representation. There is no "we tried our best" defense to a failed contingency offering once the label has been used.
Exam Tip: Gotchas
- The rule covers AON, PART-OR-NONE, and MINI-MAX representations, not just AON. Part-or-none (sometimes used interchangeably with mini-max) and any other minimum-success structure carry the same prohibited-representations regime.
- The refund obligation is unconditional once the contingency fails. "We almost cleared the minimum" is not a defense. Either the represented amount sells by the deadline at the specified price, or investor funds are returned in full.
- A genuine firm commitment is outside this rule entirely. The rule only reaches offerings where a refund contingency exists. A firm-commitment deal with customary conditions precedent does not trigger it, since the underwriter (not the investor) already carries the placement risk.
What Does the Investor-Payment Rule Require?
The investor-payment rule applies to any broker-dealer participating in a distribution other than a firm-commitment underwriting. It makes it a fraudulent, deceptive, or manipulative practice for that broker-dealer to accept part of the sale price of a security being distributed unless it handles the money correctly.
AON, part-or-none, and mini-max offerings are the fact pattern where this rule most often shows up, because they are the distributions built around a contingency.
The rule gives two paths, and which one applies depends on whether payment to the issuer is contingent:
- No contingency (ordinary best-efforts distribution): the money is promptly transmitted to the persons entitled to it.
- Contingent on a further event (AON, part-or-none, mini-max): the broker-dealer must promptly either place the funds in a separate bank account as agent or trustee for the investors, or transmit them to a bank, unaffiliated with the issuer and broker-dealer, that has agreed in writing to hold them in escrow. Once the contingency resolves, the funds are promptly transmitted or returned to those entitled.
Think of it this way: The rule is a structural firewall. Investor money cannot pass through the broker-dealer's general bank account on its way to the issuer while a contingency is still open, because if the contingency fails the broker-dealer must be able to refund every dollar without first having to wrestle it back from operating creditors or commingled funds. Either segregate it in a clearly-marked agent/trustee account or hand it to a bank that has agreed in writing to hold it in escrow.
Exam Tip: Gotchas
- SEC staff interpretation fills in what "promptly" means and who may hold the escrow. The rule text itself says only "promptly" and "separate bank account," but the SEC staff interpretation the exam follows sets "promptly" at noon of the next business day and requires the escrow bank to be UNAFFILIATED with both the issuer and the broker-dealer. Apply those specifics, not just the bare word "promptly."
- The rule's own trigger is "other than a firm-commitment underwriting," not "best efforts with a contingency." A plain best-efforts distribution with no contingency still falls under the rule; it just uses the simpler "promptly transmit to those entitled" path instead of the escrow/segregation path.
- Funds sitting in the broker-dealer's general operating account while a contingency is open defeats the purpose of the rule. The segregated-account or written-escrow path exists precisely so investor money is recoverable without being commingled with the broker-dealer's own funds.
Why Do the Two Rules Work in Tandem?
Each rule plugs a different gap. The prohibited-representations rule makes the AON or mini-max label a real promise; the investor-payment rule makes sure the promise can actually be honored.
Think of it this way: Without the prohibited-representations rule, an underwriter could use the AON label as marketing material and then ignore the refund obligation when the deal fell short. Without the investor-payment rule, the underwriter could honor the refund obligation only if it happened to still have the money on hand. Together the two rules close both ends of the loop.
Exam Tip: Gotchas
- The two rules do NOT share one trigger. The prohibited-representations rule is triggered specifically by an AON, part-or-none, or mini-max representation. The investor-payment rule has a broader trigger: any distribution other than a firm commitment.
- Only the escrow/segregation path, not the investor-payment rule itself, is specific to a contingency. The exam tests both rules, and an answer that pairs the wrong rule with the wrong substance is a common trap.
- The contingency decides WHICH investor-payment path applies, not WHETHER the investor-payment rule applies. A plain best-efforts offering with no minimum, no maximum, and no AON representation is still a non-firm-commitment distribution, so the investor-payment rule still governs; it just uses the simpler "promptly transmit" path instead of the segregated-account or escrow path.
What Should You Check on Exam Day?
- Confirm the offering carries an AON, part-or-none, or mini-max representation before applying the prohibited-representations rule; a genuine firm commitment is outside it entirely.
- Keep the two rules separate: the prohibited-representations rule polices the label and refund promise, the investor-payment rule polices custody of the money.
- Remember the investor-payment rule's trigger is "any distribution other than a firm commitment," not "best efforts with a contingency"; a plain best-efforts deal without a contingency still falls under the simpler "promptly transmit" path.
- Apply the SEC staff interpretation: "promptly" means by noon of the next business day, and the escrow bank must be unaffiliated with both the issuer and the broker-dealer.
- Check that funds are transmitted or returned once the contingency resolves; if it fails, they must be promptly returned to the persons entitled to them.