Ethics is a financial subject
Judgement is part of every financial decision. A discount rate, a loss estimate, and a growth assumption are all choices made by people with incentives, and incentives shape numbers.
An ethical failure is rarely a dramatic fraud. It is more often a small, defensible-looking adjustment that quietly serves the person making it: a loss estimate trimmed to hit a bonus, a risk omitted because it is hard to model.
Because the damage is concentrated in tail events, the cost of weak conduct looks small until the year it does not. By then the fine, the lost licence, and the lost trust arrive together.
Key points
- Judgement is unavoidable in finance, so incentives matter.
- Most failures are gradual, not sudden.
- Reputational damage is slow to build and fast to lose.
Conflicts of interest
A conflict exists whenever a decision that should serve one party also benefits the person making it. An adviser paid by commission on the products they recommend has a conflict, even if they act honestly.
Conflicts cannot always be removed, but they can be managed: disclose them, separate the decision from the reward, add independent review, or decline the work.
Disclosure alone is weak. Studies of disclosed conflicts find that disclosure can license harsher advice, because the adviser feels the warning has settled the matter.
Key points
- A conflict is structural, not necessarily dishonest.
- Disclosure is a first step, not a fix.
- Separating advice from reward is the stronger control.
Valuing a compliance decision
Expected fine = Probability of penalty × Size of penalty
The probability-weighted cost of a failure.
NPV = PV(Expected fine avoided) − Cost of controls
Whether prevention pays on the numbers alone.
A firm can spend 20,00,000 now on controls that remove a 15% chance of a 1,20,00,000 fine in two years. The expected fine is 18,00,000, and at a 10% discount rate its present value is 18,00,000 ÷ 1.21 = 14,87,603.
The calculation gives an NPV of 14,87,603 − 20,00,000 = −5,12,397. On expected-fine arithmetic alone, the controls do not pay.
That answer is correct and incomplete. It ignores the licence to operate, the customers who leave, the staff who leave, and the fact that a single large penalty is not the only outcome. Ethics exists precisely because some costs resist being put in a spreadsheet.
Key points
- Probability-weighting a risk is the right first step.
- Some costs, like trust, are real but hard to price.
- A negative NPV does not settle an ethical question.
What good practice looks like
Document the assumptions that matter and who chose them. An assumption that cannot be questioned cannot be trusted.
Escalate early. The cost of raising a concern inside the firm is far lower than the cost of it being raised outside.
Ask who benefits from the version of the numbers you are about to present, including yourself.
Key points
- Write down assumptions and their owners.
- Escalate early and in writing.
- Test your own incentive before you test the numbers.
02 / Calculate
Make the numbers yours.
Change an assumption and follow its effect. Cash flows occur at year-end; the initial investment occurs today. Amounts are in BDT.
A ৳10,000 investment with two year-end cash inflows of ৳6,000.
Net present value
Positive NPV৳413.22
The modelled cash flows exceed the investment after discounting at your chosen rate.
PV of future cash flows
৳10,413.22
Less initial investment
৳10,000.00
Follow each cash flow.
| Year | Cash flow | Discount factor | Present value |
|---|---|---|---|
| 1 | ৳6,000.00 | 0.9091 | ৳5,454.55 |
| 2 | ৳6,000.00 | 0.8264 | ৳4,958.68 |
Test the assumption
What if the rate changes?
The investment and cash flows stay the same. Compare nearby rates.
5% discount rate
৳1,156.46
Comparison scenario
10% discount rate
৳413.22
Your current assumption
15% discount rate
−৳245.75
Comparison scenario
This model uses 1–10 annual cash flows and a constant rate of 0–100%. Include taxes, working capital, and terminal proceeds in your cash-flow estimates; the calculator does not add them automatically.
03 / Apply
A material error found late
An analyst finds an error that overstates revenue in a report due for release. Correcting it will embarrass the team and delay the launch. The error is small, but it is in the summary that investors will read.
The assumptions
- The error changes the headline number, not the individual workings.
- The team bonus depends on the report being released on time.
- The error will eventually be visible in the audited accounts.
What to take away
01
A small error in the headline is a large governance problem.
02
Delay is cheaper than a correction after publication.
03
The incentive to publish on time is exactly why the review matters.
Your turn
0 of 4 answered
01Question
There is a 15% chance of a ৳1,20,00,000 penalty. What is the expected fine?
02Question
The expected fine of ৳18,00,000 lands in two years. At a 10% discount rate, what is its present value?
03Question
Which situation is a conflict of interest?
04Question
You find a material error in a report due for release. What is the correct first step?
Take it into the Lab
Experiment with the same idea.
The Lab turns this topic into a workspace: change the drivers, watch the statements move, and see the consequence before you commit to a decision.
What-if analysis
Change price, cost, and working capital. Watch margins, return, and risk move together.
Open the labFormula lab
Understand, manipulate, observe, solve, then apply the formula to a decision.
Walk the formulaStatement playground
See how one driver propagates through the income statement, balance sheet, and cash flow.
Open the playgroundSources & further reading
CFA Institute · Code of Ethics and Standards of Professional Conduct ↗OpenStax · Principles of Finance (free textbook) ↗Educational sample content. Worked examples use hypothetical figures. Dates refer to the note's latest content update.