NASAA Series 66 Cheat Sheet - Combined State Law Rules, Ethics, and Decision Workflows

Series 66 cheat sheet (NASAA): combined state law decision workflows, registration triggers, disclosures, custody/discretion, prohibited practices, plus key investment formulas and strategy anchors.

Series 66 is a combined exam. It rewards fast classification (who/what/which rule), clean disclosure decisions, and consistent ethics instincts. Use this cheat sheet with the Syllabus and Practice .


Series 66 in 60 seconds (what the exam rewards)

  • Role clarity: IA/IAR vs BD/Agent (and what each can and can’t do).
  • State law triggers: registration/exemptions + administrator authority.
  • Ethics: avoid misleading statements, manage conflicts, protect client assets.
  • Best answer pattern: disclose + document + escalate when facts are missing.
    flowchart TD
	  A["Scenario"] --> B["Classify role<br/>IA / IAR / BD / Agent"]
	  B --> C["Classify product/activity<br/>security? recommendation? custody?"]
	  C --> D["Apply rule trigger<br/>registration / exemption / disclosure"]
	  D --> E["Choose safest compliant next step"]
	  E --> F["Document + retain records"]

Official topic weights (use for time allocation)

Topic Weight
Topic I - Economic Factors and Business Information 8%
Topic II - Investment Vehicle Characteristics 17%
Topic III - Client Investment Recommendations and Strategies 30%
Topic IV - Laws, Regulations, and Unethical Business Practices 45%

1) The minimum formulas and relationships you need

Total return / HPR

$$ HPR = \frac{(P_1 - P_0) + I}{P_0} $$

Current yield (bond)

$$ CY = \frac{\text{Annual Coupon}}{\text{Market Price}} $$

CAPM (high level)

$$ E(R_i) = R_f + \beta_i (E(R_m) - R_f) $$

Sharpe ratio

$$ \text{Sharpe} = \frac{R_p - R_f}{\sigma_p} $$

Remember: Series 66 cares less about math tricks and more about choosing a product/strategy that matches constraints.


2) Strategy anchors (how recommendations are tested)

KYC + constraints checklist

  • Objectives
  • Time horizon
  • Liquidity needs
  • Risk tolerance and capacity
  • Tax status
  • Knowledge/experience

Asset allocation (high level)

  • Diversification reduces unsystematic risk.
  • Correlation drives diversification benefit.
  • Rebalance to keep risk aligned to the plan.
    flowchart TD
	  A["Client profile"] --> B["Set objectives + constraints"]
	  B --> C["Select allocation"]
	  C --> D["Choose vehicles<br/>cost, tax, liquidity"]
	  D --> E["Monitor + rebalance"]

3) Combined state law: the workflows that score points (Topic IV)

A) IA / IAR vs BD / Agent (fast separation)

If the scenario is mostly about… You’re usually in… What the exam expects
Ongoing advice/management for a fee IA / IAR fiduciary mindset, disclosures, contracts, custody controls
Effecting securities transactions BD / Agent registration triggers, communications, suitability-style logic
“Is it a security?” / exemptions State administrator / USA definitions + registration/exemption logic
Misleading statements / fraud Antifraud stop + disclose + document + escalate

B) Registration and exemption workflow

    flowchart TD
	  A["What is the actor?"] --> B{"IA/IAR<br/>or BD/Agent?"}
	  B -->|"IA/IAR"| C["Check adviser definition<br/>advice + business + compensation"]
	  B -->|"BD/Agent"| D["Check BD/agent triggers<br/>effecting transactions"]
	  C --> E["State vs federal covered (concept)"]
	  D --> F["State registration + disclosures"]
	  E --> G["Ongoing compliance<br/>records, supervision"]
	  F --> G
	  G --> H["Antifraud always applies"]

C) Securities and exemptions (how to think)

  • Start by classifying: security vs non-security (as framed by the outline).
  • Then classify: exempt security vs exempt transaction.
  • If exempt, the safe move usually still includes: deliver required disclosures, avoid misleading statements, document basis.

D) Advertising and performance claims

    flowchart TD
	  A["Ad / post / pitch deck"] --> B["Is it fair and balanced?"]
	  B --> C["Disclose fees, risks, assumptions"]
	  C --> D["Avoid guarantees and cherry-picking"]
	  D --> E["Supervisory review/approval"]
	  E --> F["Retain records"]

E) Custody and discretion

Concept Exam cue Best-answer pattern
Custody “holding client funds”, “direct access”, “fee deduction” follow custody controls + segregate + document + escalate
Discretion “trade without client pre-approval” written authorization + supervision + audit trail

F) Unethical business practices (classic traps)

  • Misrepresentation / omission
  • Unauthorized trading
  • Churning
  • Front-running
  • Insider trading / MNPI misuse
  • Conflicts without disclosure

When a red flag appears: stop -> escalate -> preserve records -> document.


What to do next

Not legal advice. Exam outlines and rules can change; confirm current requirements with official sources.

Trademark note: Mastery Exam Prep and Tokenizer Inc. are independent exam-prep providers and are not affiliated with, endorsed by, or sponsored by NASAA.