Fiduciary Duty: What It Requires and Who Owes It

A fiduciary duty is the obligation to act in another person's interest ahead of one's own, and to do so with care. The duty binds those trusted with someone else's money or decisions: directors to the company, trustees, fund managers, and advisers who hold themselves out as acting for the client. Loyalty forbids self-dealing and secret profit; care requires diligence and skill. A fiduciary duty sits above merely selling what is suitable.

When one person controls another's money, honesty is not enough. Honest people still favour themselves at the margin. Nobody has to lie to tilt a decision a little their own way; they only have to be human. A fiduciaryA person who holds power over someone else's money, property or decisions and is bound to use it for that person rather than for themselves. From the Latin for trust. duty removes the margin: the other's interest comes first, always, and the person holding the power is not allowed to keep a slice for themselves without saying so and standing aside. Four questions follow: what makes this duty stronger than ordinary honesty, who carries it in finance and who does not, how its two halves, loyalty and care, come apart, and why an adviser who sells a client something perfectly fine can still have failed that client.

What is a fiduciary duty, and how is it stronger than ordinary honesty?

Consider two people. The first is a shopkeeper selling a ceiling fan. The customer expects the shopkeeper not to lie about the fan, not to overcharge against the printed price, and to hand over the fan paid for. Beyond that, the shopkeeper is allowed to want the sale, allowed to push the model with the better margin, allowed to stay quiet about the cheaper shop two doors down. Those limits are ordinary honesty: tell the truth, keep the bargain, and otherwise look after oneself. The second person is a neighbour handed a bank card and a personal identification number (PIN) by someone who is unwell and needs a pension drawn each month. Nothing about that arrangement is a sale. The neighbour has been given control over another person's money, and that person is relying on the neighbour's judgement in their absence. If the neighbour draws the pension and, on the way home, uses the card to top up their own phone, "I did not lie" is no defence at all.

A fiduciary duty is stronger than honesty because it reverses the default: instead of being allowed to look after oneself while dealing fairly with the other person, the fiduciary must look after the other person and set their own interest aside. The two roles have names worth holding on to. The person whose money or decision it is, the unwell pensioner in the example above, is the principalThe person on whose behalf someone else acts and whose interest is meant to come first: the client, the beneficiary, the company itself.. The person acting for them, the neighbour, is the agentThe person who acts on another's behalf and holds some of their power: a director, a trustee, an adviser, a manager. Contrast with a counterparty, who deals with the other side at arm's length.. The whole of the duty can be drawn as an ordering: the principal's interest is the large arrow that leads, and the agent's own interest is a small arrow that has to stay behind it. Look at the figure below. In the top row the arrows are the same size and the seller's arrow may go first. In the bottom row the sizes and the order are fixed by the duty.

Why does the law of trust, and the ordinary sense of decency, draw the line here rather than somewhere else? Because of what the principal gave up. The fan buyer kept the decision; they can walk out. The pensioner handed over the card, the PIN and the walk to the bank, and cannot watch what happens next. Wherever a person has given up the ability to protect themselves and relies on someone else's judgement, honesty alone leaves them exposed at exactly the point where they cannot look. The duty fills that gap. The duty is not a courtesy that a good agent chooses to extend. It is the price of holding the power in the first place.

Who owes a fiduciary duty in finance?

The test is the one just set out: has this person been given control over someone else's money or decisions, and is that someone relying on their judgement rather than watching over their own shoulder? Applied across the roles found in finance, a clear list falls out. Shareholders have handed the directors the power to run a business the shareholders cannot run themselves, so directors owe the duty to the company they direct. Trustees owe it to the beneficiaries of the trust, whose property they hold in their own names. Fund managers owe it to the people whose savings sit in the fund. Advisers who hold themselves out as acting for the client, "let me look after this", owe it to that client. In each case the direction is the same: the duty runs from the one who holds the power to the one whose money it is.

Whoever controls another's money or decisions, and is relied on to use that control well, owes a fiduciary duty; whoever merely deals at arm's length does not. The second half matters as much as the first. A shopkeeper does not owe the duty. A bank lending to a company is a counterparty, not a fiduciary of the borrower; it looks after its own money and is entitled to. A stockbroker who only executes the orders a client places, at the client's own instruction, owes fair dealing and honest execution but is not deciding anything for the client. The moment that same broker starts saying that the client should hold this rather than that, the relationship shifts toward the top right of the map below, and the duty follows the power. The exact statutory list of who is treated as a fiduciary, and what each is required to do, differs by country and by regulator; what holds across all of them is the shape.

What does the duty of loyalty require?

Picture a cousin who has been handed the budget for a wedding: Rs 12,00,000 in a joint account, and the trust of the whole household to spend it well. He books the tent, the caterer and the lights. He also runs a lighting business, and he books his own firm at his own price without mentioning it. Nobody was lied to; the lights worked. But the household would ask, quite rightly, whether the price was the best they could have had, and whether they would have chosen differently had they known. The unease has a name.

The duty of loyaltyThe half of the fiduciary duty about whose side the fiduciary is on: no putting one's own interest into the decision, no profit from the position that the principal has not been told about and agreed to. requires that the fiduciary take nothing from the position without the principal's informed consent, and that where the fiduciary's own interest touches a decision, the interest is disclosed and the fiduciary steps back from that decision. Two forbidden things sit inside that sentence. The first is self-dealingA fiduciary transacting with the principal's money on the other side of the deal, or steering the principal's money toward something the fiduciary has a stake in.: standing on both sides of a deal done with the principal's money, as the cousin did with his lighting firm. The second is secret profit: any gain the fiduciary keeps from the position, a commission, a fee, a favour, a share, that the principal did not know about and agree to. Notice the word secret. Loyalty does not say a fiduciary may never be paid; it says every rupee the fiduciary makes from the position is either disclosed and accepted, or handed back.

At Aravalli Agro Foods the loyalty question arrives at the boardroom door in the shape of a warehouse. The board is asked to approve buying a warehouse for Rs 34,00,00,000 from a company that Devika Rathore's cousin controls. Devika Rathore is the Managing Director and holds 52 per cent of the shares, and she is a director like the others, so she owes the duty to the company. Her personal interest, a cousin on the other side of the sale, touches the decision directly. Loyalty asks three questions in order, and the figure below walks them: is there a personal interest, has it been disclosed to the board, and has she stepped away from the vote so the independent directors decide? Every "no" after the first drops into a breach.

Two things about that path deserve a second look. First, disclosure by itself does not finish the job. Telling the board "the seller is my cousin's company" and then voting anyway leaves one hand on each side of the deal. Second, stepping away is not the same as the deal being wrong. The warehouse might be exactly what Aravalli Agro Foods needs at exactly the right price. Loyalty is not a verdict on the purchase; it is a rule about who may decide it. The path therefore ends by handing the question over to the other half of the duty.

What does the duty of care require?

Go back to the wedding cousin, and this time make him scrupulously loyal: no lighting firm of his own, nothing taken. He still books the first caterer he rings, without tasting anything or asking a second price, and the food is poor and cost a third more than it needed to. Nobody accuses him of disloyalty. The household accuses him of not bothering. He was handed Rs 12,00,000 of other people's money and gave it less attention than he would give to Rs 12,000 of his own.

The duty of careThe half of the fiduciary duty about how well the job is done: the diligence, attention and skill a careful person would bring to their own affairs, applied to someone else's. requires the fiduciary to bring to the principal's affairs the diligence and skill that a prudent person would apply to their own, and it can be breached by a perfectly loyal fiduciary who simply does not do the work. That makes loyalty and care two separate tests, not one, and the point is easiest to see in a grid. Put loyalty across the top and care down the side and the Rs 34,00,00,000 warehouse lands in one of four cells. Only one of them is clean.

For Suresh Menon and the other independent directors, care in the room is a short list that any careful buyer of a house would recognise. Ask whether the business needs the warehouse at all: with 2,200 distributors and one national retail chain at 18 per cent of sales, where does stock actually sit today? Get a valuation from someone who does not report to the promoter. Compare the Rs 34,00,00,000 with what two other warehouses in the same belt changed hands for. Read the terms, not the summary. Care that leaves no trace cannot be shown afterwards, so write the questions and the answers into the minutes. Care is not brilliance; it is the ordinary diligence a prudent person gives their own money, applied to somebody else's.

The same test faces the board on the second item of the same agenda, the large capital project. Care requires the directors to know the project's effect on the loan covenants before they vote. Net debt of Rs 2,40,00,00,000 against earnings before interest, tax, depreciation and amortisation (EBITDA) of Rs 1,05,00,00,000 is 2.3 times, under a 3.0 times covenant. The covenant ceiling is 3.0 times Rs 1,05,00,00,000, or Rs 3,15,00,00,000. The headroom is Rs 75,00,00,000. A director who votes for a project without knowing that number has been loyal and careless at once.

How is fiduciary duty different from suitability?

Most people meet the duty not as a director but as a customer being sold something. The idea earns its keep right there. Two standards can govern the person across the desk. Under suitabilityA seller's standard: the product recommended must fit the customer's needs, means and risk appetite. Suitability forbids selling the unsuitable and does not require choosing the best., the seller must not sell the customer something unsuitable for that customer's needs, means and appetite for risk. The rule is a real protection and stops the worst abuses: nobody may put a retired teacher's whole pension into something that could vanish. The limit of the standard matters as much. Suitability never requires the seller to choose the best product for the customer among the suitable ones. If three products all fit, the seller may recommend whichever pays the seller most, and has broken nothing.

Suitability forbids the unsuitable; a fiduciary duty requires the best, and the gap between the two is exactly where the commission lives. A fiduciary must act in the client's best interestThe fiduciary's test: of the options actually available, the one that serves the client most, judged as the client would judge it if they knew everything the fiduciary knows.. Among the fine products the fiduciary must pick the one that is best for the client, and where the fiduciary's own pay pulls the other way, the pull must be disclosed and set aside. The two panels below put the standards on identical rows, to be read straight across.

Now bring in Anjali Deshmukh, the invented adviser to the Rathore household's personal wealth. Suppose the household is placing Rs 50,00,000 and two products fit it equally well: call them the Kesar Balanced Plan and the Neel Balanced Plan, both invented, both fine for the household. The Kesar plan pays Anjali Deshmukh 1 per cent up front, Rs 50,000. The Neel plan pays her 2 per cent, Rs 1,00,000. Since the products are otherwise the same, the extra 1 per cent is not conjured from nowhere; it comes out of the household's Rs 50,00,000, so the household is Rs 50,000 worse off in the Neel plan and gets nothing for it. Under suitability, either recommendation passes: both fit. Under a fiduciary duty, only the Kesar plan may be recommended, and Anjali Deshmukh must tell the household what she earns from it. If she believes the Neel plan is better for a reason the household can check, she must say why and show the commission gap alongside; if she cannot, the extra Rs 50,000 is her interest leading the household's, and the small arrow has got in front of the large one.

How do the board and the adviser each face the duty at Aravalli Agro Foods?

Put the two worked instances side by side and the same two halves of the duty appear in each, wearing different clothes. The board owes the duty to Aravalli Agro Foods itself, not to Devika Rathore's 52 per cent and not to the lender. On the warehouse, loyalty means the promoter declares the cousin's interest and steps away, and care means Suresh Menon's independent directors get the valuation, test the need and minute the questions before Rs 34,00,00,000 leaves the company. On the capital project nobody on the board has a personal stake, so loyalty is quiet and care does all the work: knowing the Rs 75,00,00,000 of covenant headroom before the vote.

The board and the adviser face the same two tests, but the board's harder test on the warehouse is loyalty while the adviser's harder test on the two plans is also loyalty; care is what each still has to do once the conflict is out of the room. Anjali Deshmukh owes the duty to the Rathore household as her client, and her interest arrives not as a cousin but as a commission. Loyalty means she discloses what each plan pays her and recommends the Kesar plan while the Neel plan pays more for the same thing. Care means she has actually compared the two, checked they fit the household's needs, and can show her working. Read the two columns below as one lesson: whose interest could lead, what puts it back behind, and what diligence remains.

How do households, investors and analysts actually use the idea?

A household uses it as a question, asked before any money moves: is this person acting for the household, and how are they paid? The answer sorts the person across the desk onto the map above. Someone who says they are paid by the product provider and sell what fits is describing the suitability standard. The suitability standard leaves the household to do the comparing. Someone who says they act for the household, and sets out exactly what they earn from each option, has put themselves in the top right and taken that job on. Neither answer is wrong to give; what matters is that the household knows which one it got, and that the answer is written down.

An investor reading Aravalli Agro Foods uses it on the board. When the annual report discloses a warehouse bought from a company connected to the promoter, the investor looks for the two halves: was the interest declared and did the promoter abstain, and is there any sign that the independent directors did the work, an independent valuation named, a committee that met? Practitioners rarely ask whether a fiduciary was honest; they ask whose interest could have led, what put it back behind, and whether the diligence left a trace.

An analyst uses it to price trust. The duty is only ever tested when interests actually collide. A board that has visibly handled one connected transaction well, and an adviser who shows her commissions without being asked, are worth more to the people relying on them than the same board or adviser with a spotless record and no evidence either way. Farida Shaikh, who bought Aravalli Agro Foods shares on a distributor's tip and later found an add-on product she never asked for on her broker's statement, is the reader for whom this distinction is not academic: whether the person who sold it to her was bound to sell only what fitted, or bound to choose what was best for her, decides what she can ask for when she complains.

Aravalli Agro Foods Limited, Devika Rathore, Suresh Menon, Nikhil Sarin, Anjali Deshmukh, the Rathore household, Farida Shaikh, the Kesar Balanced Plan and the Neel Balanced Plan are invented.
Educational material. Not advice on any investment, tax, budget or market position.