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Lesson 2 of 5 10–15% of the exam

Standard III(B): Fair Dealing

Deal fairly and objectively with all clients when disseminating recommendations and taking investment action. Fair is not equal: service levels may differ if disclosed and open to all who pay, but no client may be disadvantaged on a recommendation change or a trade allocation. Oversubscribed issues are allocated pro rata.

6 min cram, 32 min full read. Based on the 2027 CFA® Program Level I curriculum, Ethical and Professional Standards, Learning Module 5. Sitting in November 2026? The 2026 version of this lesson is still available.

Tailor this to you: take the self-assessment

Before this: Standard III(A): Loyalty, Prudence, and Care

On the exam

  • Demonstrate the application of the Code of Ethics and Standards of Professional Conduct to situations involving issues of professional integrity
  • Recommend practices and procedures designed to prevent violations of the Code of Ethics and Standards of Professional Conduct
  • Identify conduct that conforms to the Code and Standards and conduct that violates the Code and Standards

Demonstrate III(B), recommend procedures and identify compliant conduct. Expect recommendation-dissemination and trade or new-issue allocation items, and possibly one pro rata calculation. The usual wrong answers equate fair with identical, or favor the biggest clients.

How deeply to learn each part
Know the idea
Understand it in general. It frames other topics, but you will not calculate with it.
Use it
Understand it well enough to solve a question with it. Recognize when it applies.
Memorize
Learn it by heart. The exam will not give it to you.

You know this one. The full lesson is folded away. The takeaways, formulas and checkpoint below are your quick refresher, and the checkpoint is a fair test of whether you still do.

You tested strong here. The full lesson is folded away. The takeaways, formulas and checkpoint below are your quick refresher, and the checkpoint is a fair test of whether you still know it.

Cram mode: the one-screen version of this lesson. Switch to Full for the explanations, worked examples and interactives.

What does Standard III(B) require?

Standard III(B), fair dealing , requires you to deal fairly and objectively with all clients when you provide analysis, make recommendations or take action. The Standard says “fairly”, not “equally”, because you cannot reach every client at the same instant, and because clients have different objectives, so not every opportunity suits every client.

Memorize

It covers two kinds of conduct, and the exam tests both.

  • An investment recommendation is any opinion about buying, selling or holding an investment. It may be a full report, a short update, an addition to or deletion from a recommended list, or an oral comment. Every client must have a fair opportunity to act on it. Changes matter even more than first-time views, so tell the clients who acted on the old view, particularly before you accept an order that goes against the new one.
  • Investment action means trades and allocations: general purchases, new issues and secondary offerings, and block trade s that serve several accounts.
Where Standard III(B) applies
Fair dealingfair, not equal
  • Investment recommendations Memorize opinions on buying, selling or holding
    • Initial and changed recommendations a fair chance for all to act
    • Reach clients who acted on the old view and warn anyone ordering against the new one
  • Investment action Memorize trades and allocations
    • Block trades same price, same commission, pro rata fills
    • Oversubscribed new issues pro rata, round lots
  • Levels of service Memorize allowed with conditions
    • Disclosed to clients and prospects
    • Open to all not offered selectively

How do you allocate an oversubscribed issue?

When demand exceeds supply, an oversubscribed issue must be allocated pro rata : each eligible order receives the same fill ratio, at the same price, on a round-lot basis to avoid odd lots.

Pro rata allocation Use it
A=O×STA = O \times \frac{S}{T}

Here AA is a client’s allocation, OO the client’s order, SS the shares available and TT the total ordered by all eligible clients. The fraction S/TS/T is the fill ratio.

Rearrange itPro rata allocation: solve for any input
The question asks for
A firm receives 12000 shares of an oversubscribed issue. Eligible clients ordered 20000 shares in total. The fill ratio under a pro rata allocation is closest to:

12000 ÷ 20000 = 60.00%

Fill ratio60.00%

On your calculator
  1. 12000÷20000=0.6, so 60.00%
  1. 12000ENTER20000÷0.6, so 60.00%

ENTER enter (on the HP, puts the number on the stack)

If the fill ratio gives odd lots, round to round lots, and use an agreed minimum lot size for securities such as bonds. Rounding is a detail, not a license to favor someone.

Two more rules sit on top of the arithmetic.

  • If the issue is oversubscribed, forgo purchases for yourself and your immediate family to free up shares for clients. The exception is a family account that you manage like any other client account. Then it should not be excluded.
  • A hot issue is one trading at a premium once secondary trading begins, because of strong demand. Make a bona fide public distribution. Never hold it back for your own benefit or use it as a reward to gain a benefit.

Can service levels differ?

Yes. You may give more personal or in-depth service to clients who pay higher fees or generate more brokerage. The conditions for levels of service are that they are disclosed to clients and prospects, are available to everyone willing to pay, and do not disadvantage or negatively affect other clients.

Disclosure has a limit. A duty of fairness and loyalty can never be overridden by client consent to a patently unfair allocation procedure.

Where do the lines fall?

SituationVerdict
An analyst phones the five biggest clients about a downgrade an hour before emailing everyone elseViolation
A premium tier gets a monthly call with the analyst, disclosed and open to all who payAcceptable
A manager allocates an oversubscribed issue only to accounts that pay performance feesViolation
A manager fills a block trade and allocates it pro rata at the average priceAcceptable
A manager gives a family account that is managed like any client account a pro rata share on the same termsAcceptable
InteractiveAllocating an oversubscribed issue

Try this 0 of 3

  • Make the issue big enough that nobody is cut back
  • Set every order to the same size
  • Add a fourth client order
Total orders20,000
Fill ratio60.0%
6k2k10kClient A3.6k6k2kClient B2.4k4kClient C
  • Pro rata
  • First come
  • Largest first
ClientOrderPro rataFirst comeLargest first
A09:1210,0006,0002,00010,000
B09:036,0003,6006,0002,000
C09:074,0002,4004,0000

First come and largest first are not fair dealing under III(B): some clients are filled in full while others get little or nothing. Pro rata gives every eligible account the same fill ratio at the same price.

Show working

Total orders = 10,000 + 6,000 + 4,000 = 20,000

Fill ratio = 12,000 ÷ 20,000 = 60.00%

Client A: 0.6 × 10,000 = 6000

Client B: 0.6 × 6,000 = 3600

Client C: 0.6 × 4,000 = 2400

Fill ratio and client A's shares on your calculator
  1. 12000÷(10000+6000+4000)=0.6, the fill ratio
  2. ×10000=6000, client A's shares
  1. 12000ENTER10000ENTER6000+4000+÷0.6, the fill ratio
  2. 10000×6000, client A's shares

ENTER enter (on the HP, puts the number on the stack)

Fair means the same chance and the same price, not the same size.

What procedures help?

  • Limit the number of people who know a recommendation is coming, and shorten the time between the decision and the release.
  • Publish guidelines that stop staff who know of a pending recommendation from discussing or trading on it until it is out.
  • Disseminate simultaneously, for example by email or a platform. After wide distribution you may follow up with individual clients.
  • Keep a list of clients and their holdings, so you can notify the right people when a view changes.
  • Write down allocation procedures: time-stamp orders and changes, process first in, first out, give every account in a block the same price and commission, and allocate partial fills pro rata on order size. For new issues, collect indications of interest and allocate by client, not by portfolio manager.
  • Disclose the allocation procedures and the levels of service. Review accounts regularly to catch preferential treatment.
Go deeper Why simultaneous means as close as practical

Mail, phone, email and trading platforms reach people at different speeds, so literal simultaneity is impossible. What the Standard rules out is a deliberate head start, such as calling favored clients first. A firm that sends an alert to everyone at once, then lets analysts call individuals afterward, is in line with the Standard.

Go deeper Why different accounts may trade differently

Fair dealing does not force every account to do the same thing. A manager may buy a security in one account while selling it from another because their objectives differ. Document the reasons for both sides of the trade, and expect supervisors to review accounts to check that trading is not being used to benefit a favored client.

Memorize this

MemorizeStandard III(B): what to know cold

TopicThe rule
Fair, not equalNo discrimination. Clients cannot all be reached at the same instant
RecommendationsGive all clients a fair opportunity to act. Changes matter more than first calls. Warn clients who have acted on the old view
Oversubscribed issuePro rata on order size, same price, round lots. Do not buy for yourself or relatives unless their accounts are managed like clients'
Hot issuesBona fide public distribution. Never held back or used as a reward
Levels of serviceAllowed if disclosed, open to all who pay, and not disadvantaging others
Client consentCannot excuse a patently unfair allocation method

Memory hook Same chance, same price, not same size: fill ratio = shares received ÷ total ordered, applied to every order.

Know it cold Allocate pro rata, disseminate together, disclose the procedures.

Where Standard III(B) applies
Fair dealingfair, not equal
  • Investment recommendations Memorize opinions on buying, selling or holding
    • Initial and changed recommendations a fair chance for all to act
    • Reach clients who acted on the old view and warn anyone ordering against the new one
  • Investment action Memorize trades and allocations
    • Block trades same price, same commission, pro rata fills
    • Oversubscribed new issues pro rata, round lots
  • Levels of service Memorize allowed with conditions
    • Disclosed to clients and prospects
    • Open to all not offered selectively
Pro rata allocation Use it
A=O×STA = O \times \frac{S}{T}
Quick example

A firm receives 6,400 shares of an oversubscribed issue. Eligible clients ordered 10,000 shares in total, and one client ordered 4,000. Fill ratio 6,400 ÷ 10,000 = 64%, so that client receives 4,000 × 0.64 = 2,560 shares.

On your calculator
  1. 6400÷10000×4000= 2560
  1. 6400ENTER10000÷4000× 2560

ENTER enter (on the HP, puts the number on the stack)

How it is asked

  1. Compute the allocation

    7,500 shares, orders of 7,000, 3,500 and 1,500. How many to the 7,000 client?

    7,500 ÷ 12,000 = 62.5%, so 4,375. Traps: equal split (2,500), first order filled in full (7,000).

  2. Selective call before release

    An analyst phones the three biggest clients about a downgrade before releasing it. Violation?

    Yes, III(B). Trap: II(A), because the duty breached is fair dealing.

  3. Premium service

    A higher-fee tier gets more frequent reviews. It is disclosed to all. Violation?

    No. Different service levels are allowed if disclosed and open to all. Trap: "all service must be identical".

Exam traps

  • Reading "fairly" as "equally". Different service levels are fine if disclosed, open to all who pay, and not disadvantaging anyone.
  • Allocating a scarce issue to the largest or most profitable relationships first, or only to accounts that pay performance fees. Allocation is pro rata.
  • Believing client consent can cure an unfair allocation method. Consent to a patently unfair method never excuses it.
  • Confusing III(B) with VI(B) Priority of Transactions. III(B) is about treating clients fairly against each other. VI(B) is about personal trading against clients.

Checkpoint

3 exam-style questions. About 90 seconds each.

  1. 1A firm receives 9,000 shares of an oversubscribed issue. Three eligible clients ordered 8,000, 5,000 and 2,000 shares. Under a pro rata allocation, the client who ordered 8,000 shares should receive:

  2. 2An analyst phones the firm's three largest institutional clients about a rating change before releasing it to all clients. Did the analyst violate the Standards?

  3. 3A wealth manager offers clients who pay a higher fee more frequent portfolio reviews, and discloses the tiers to all clients and prospects. Anyone willing to pay can join. Did the manager violate the Standards?

Key takeaways

  • Treat clients fairly, not identically.
  • Disseminate recommendations, especially changes, so that all interested clients have a fair chance to act.
  • Allocate block trades and oversubscribed issues pro rata at the same price.
  • Premium service is fine if disclosed and open to everyone willing to pay.
Pro rata allocation Use it
A=O×STA = O \times \frac{S}{T}
Quick example

A firm receives 6,400 shares of an oversubscribed issue. Eligible clients ordered 10,000 shares in total, and one client ordered 4,000. Fill ratio 6,400 ÷ 10,000 = 64%, so that client receives 4,000 × 0.64 = 2,560 shares.

On your calculator
  1. 6400÷10000×4000= 2560
  1. 6400ENTER10000÷4000× 2560

ENTER enter (on the HP, puts the number on the stack)

All Ethical and Professional Standards formulas, every lesson

Practice exam-style questions on Guidance for Standard III: Duties to Clients

Questions about this lesson?

Where this comes back

Questions candidates ask

Does fair dealing mean treating all clients equally?

No. The Standard says fairly, not equally. You may differentiate service by fee level if the levels are disclosed and available to all, but no client may be disadvantaged on recommendations or trade allocation.

How should initial public offering (IPO) shares be allocated among clients?

If an issue is oversubscribed, allocate pro rata to all eligible subscribers according to order size, at the same price and on a round-lot basis. Do not favor large, profitable or related accounts, and do not hold back a hot issue.

Can a firm offer different levels of service?

Yes. Premium service for higher fees is acceptable if the levels are disclosed to clients and prospects, are available to everyone willing to pay, and do not disadvantage other clients.

Spotted an error? Tell us and we will fix it.

  1. Standard III(A): Loyalty, Prudence, and Care
  2. Standard III(B): Fair Dealing
  3. Standard III(C): Suitability
  4. Standard III(D): Performance Presentation
  5. Standard III(E): Preservation of Confidentiality

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