The Three Margins: Initial, Variation and Maintenance

Initial margin is collateral put up before a position is carried, sized against a move that has not happened yet. Variation margin is the payment that settles the movement that already has, collected from one side and credited to the other. Maintenance margin is neither of those: it is the level a balance is watched against, and reaching it produces a call to restore the balance rather than a payment to anybody.

Three separate things on one statement carry the same word. One word stretched across three objects is the whole difficulty, and finding it confusing is nobody's fault. Somebody chose the word margin for a sum that sits still, for a sum that travels from one party to another, and for a line that is not a sum at all. Once a reader can say which of those three a given figure is, every sentence about collateral on a derivative position becomes readable. Until then the machinery looks arbitrary, because three different objects are being read as one.

Everything below runs on one invented set of figures, so it is worth fixing them before anything else moves. There is a reference asset standing in for whatever a contract might reference. Its spot price is Rs 2,000.00/-, a PRICE, and the same Rs 2,000.00/- is the exposureThe value of the referenced thing that a position stands on. The exposure is the base a margin percentage is struck on, and no part of it changes hands. carried by one unit. The reference asset pays nothing at all while it is held. A payout during the holding period would change every carried figure below, so the absence has to be said out loud.

Financing costs 6.50 per cent a year. Multiply the spot price of Rs 2,000.00/- by one plus that rate and the answer is Rs 2,130.00/-, the agreed price on a position running a year and a PRICE too. The agreed price is what buying the reference asset today with borrowed money costs by that date, and the arithmetic runs the same way whether anybody is optimistic or gloomy about what happens next.

Against that position sits collateral. The initial marginCollateral put up before a position is carried. Initial margin is not a payment for the position and not part of the price. The arrangement simply holds it while the promise is open. used throughout this guide is 8.0 per cent of the Rs 2,000.00/- exposure, giving Rs 160.00/- on one unit, and the 8.0 per cent is a teaching figure rather than a requirement anybody has set. The amount actually asked for is worked out by clearing corporations under the framework of the Securities and Exchange Board of India (SEBI) at sebi.gov.in, it differs by contract and by day, and it moves. The teaching figure earns its place through the pair of ratios it exposes, and both ratios survive whatever the real percentage turns out to be on any given morning.

Either ratio on its own misleads, so the two have to be read together. Rs 2,000.00/- of exposure standing on Rs 160.00/- of collateral is 12.50 times, and that is the leverageThe exposure carried for each rupee of collateral put up. Twelve and a half times means every rupee of collateral is standing under twelve and a half rupees of referenced value. embedded in the position. Now take a gap of Rs 80.00/- between two prices, worth 4.0 per cent of the Rs 2,000.00/- exposure. The same Rs 80.00/- is 50.0 per cent of the Rs 160.00/- put up. A gap worth four per cent of the referenced thing takes half of what was put down, and that ratio, rather than the size of the exposure, is what makes these positions different to hold.

What are the three margins, and what job does each one do?

Take the names away for a moment and ask what jobs are actually being done. There are exactly three, and they arrive in a fixed order. First, something has to be put up against the promise before anything at all has happened. A promise from somebody with nothing behind it is not worth much on the day it matters. Second, once a price has moved, the movement has to be settled between the two sides rather than allowed to sit as an unpaid obligation. Third, something has to decide when the first of those has thinned enough to need topping up.

Now put the names back. Initial margin is the name for what is put up before anything happens. Variation marginThe payment that settles a movement that has already happened. Collected from one side and credited to the other, so a settlement rather than a deposit. is the name for what moves once the price has moved. Maintenance marginThe level a collateral balance is watched against. Nobody puts up an amount; reaching the level produces a demand to restore the balance. is the name for what decides that the first has thinned enough. Three jobs, three names, and a reader who holds the three jobs can place any margin word they meet later without being told which one it is.

There is an everyday version of this that will do the work of a paragraph. A landlord holds a deposit before anybody moves in, and that deposit is not rent and never was. Rent falls due each month and is handed across for a month that has already been lived in. And somewhere in the arrangement there is a point at which the deposit has been eaten into far enough that the landlord asks for it to be made whole again. Three different things, and only the middle one is money changing hands for something that has already happened. The words are different, so nobody confuses rent with a deposit. Give all three the word margin and the confusion is manufactured.

Notice what the third one is not. Maintenance margin is not a third pot of money sitting beside the other two. Nobody hands it over, nobody holds it, and it does not appear as a sum anywhere on a statement in the way the first two do. The third is a line. When the balance touches the line, a callThe demand that follows either a movement in the price or a balance reaching the level it is watched against. A call demands money or acceptable collateral against a stated deadline. goes out. The line does that entire job without ever being an amount.

What is initial margin, and what is it sized against?

Initial margin is put up before the position is carried. Nothing has happened yet. No price has moved, nobody owes anybody anything, and the arrangement is already holding the position holder's money. The ordering feels strange on first acquaintance, and the strangeness is the point rather than an oddity. The whole design rests on there being something there before there is a reason for it to be there.

Now three negatives. Most readers arrive carrying at least one of them. Initial margin is not a payment for the contract, it is not a part payment of the price, and it is not a fee. Take them one at a time. Nothing has been bought, so initial margin is not a payment for the contract: a position agreed at Rs 2,130.00/- has not cost anybody Rs 2,130.00/- today and will not until the final date. Initial margin is not a part payment of the price either. Nothing is credited against the Rs 2,130.00/- at all, and when the position ends, what was put up comes back as a separate thing rather than as an instalment already handed over. And it is not a fee. A fee is somebody's income, and collateral is nobody's income. It is held.

Margin Requirement: what is put up, and what the requirement is struck on

A margin requirement is an amount asked for before a position may be carried, and the first question to ask about any such requirement is what base it is struck on. Here the requirement is struck on the exposure, the value of the referenced thing that the position stands on: Rs 2,000.00/- for one unit of the reference asset. The requirement is not struck on the agreed price of Rs 2,130.00/-, and not on whatever profit or loss the position might eventually show. Name the base in the same breath as the ratio, every time, or the ratio means nothing at all.

On the figures used here, 8.0 per cent of the Rs 2,000.00/- exposure is Rs 160.00/-, and the 8.0 per cent is a teaching figure rather than a real requirement. The requirement is sized against a move that has not happened yet. The sizing is worth pausing on, and it explains everything odd about the number. Collateral put up in advance has to be big enough to cover what the reference asset could plausibly do between now and the next chance to ask for more. Not what it will do. Nobody knows that. Only what it could plausibly do inside a window. Something has to still be there when the arrangement next looks.

Which means the size of the requirement follows from two things a reader can reason about without any figures at all. The size follows from how far the referenced thing tends to travel, and from how soon the arrangement can ask again. A shorter window allows a smaller requirement. A more restless referenced thing forces a larger one. Both of those change from day to day, and a real margin requirement moves with them.

How much is actually asked for, and the method used to arrive at it, is worked out by clearing corporations under the framework of SEBI at sebi.gov.in. The requirement differs by contract and by day, and it changes as conditions change. The row is named in the table below, and its value belongs to the authority that sets it.

The teaching figure gives the shape, and the shape is what matters. The two limbs belong together. Two thousand divided by one hundred and sixty is twelve and a half, and Rs 2,000.00/- of exposure resting on Rs 160.00/- of collateral is therefore 12.50 times. Run it the other way and the same fact appears: one divided by 12.50 is 0.08, the 8.0 per cent the calculation started from. Leverage and the margin percentage are one fact written two ways, and a reader who sees only one of them has been shown half a sentence. Now the second limb. A gap of Rs 80.00/- between two prices is 4.0 per cent of the Rs 2,000.00/- exposure and 50.0 per cent of the Rs 160.00/- put up. The same rupee figure, read against two different bases, is a rounding error on one and half of everything on the other.

What is variation margin, and how does it settle what has already happened?

At the close of a day a settlement priceThe price determined at the close of a day that every open position in a contract is revalued against. The settlement price is arrived at by a stated method rather than picked up off the last trade. exists for the contract. How that number is arrived at is covered separately and used here without being rebuilt; what matters here is that once it exists, the difference between it and the price the position was struck at is collected from one side and credited to the other. The collection is variation margin.

Work it on the invented figures. The agreed price is Rs 2,130.00/-, a PRICE. The settlement price determined for the first day is Rs 2,050.00/-, also a PRICE. The gap between them is Rs 80.00/-, and that gap is not a price at all: nothing was bought or sold at Rs 80.00/-. The gap is a PAYMENT, collected from the long position and credited to the party on the other side. Variation margin does not go into a pot held against the position; it goes to somebody, and that is the single fact that separates it from initial margin.

Watch what that does to the collateral balanceWhat is being held for the position holder at any moment. It starts at what was put up and moves as payments are collected from it or credited to it.. The balance started at Rs 160.00/-. Rs 80.00/- has been collected. The balance is now Rs 80.00/-, or 50.0 per cent of what was put up. Meanwhile the exposure has not moved at all: the position still stands on Rs 2,000.00/- of referenced value, exactly as it did before the day began. Half the backing is gone and the thing being backed is the same size. Leverage of 12.50 times looks like that in practice rather than on paper.

On the next day a settlement price of Rs 2,090.00/- is determined. The gap from Rs 2,050.00/- to Rs 2,090.00/- is Rs 40.00/-, and this time it travels the other way: Rs 40.00/- is credited, and the balance goes from Rs 80.00/- to Rs 120.00/-. Notice the phrasing. Rs 40.00/- was credited. The Rs 80.00/- that left yesterday was never sitting anywhere waiting to come back, and it did not. The money was handed to somebody. Today's Rs 40.00/- is a fresh payment in the other direction that happens to be smaller.

A move is the gap between two prices, and the gap in the contract is not the gap in the spot

One precision that is easy to lose and expensive to lose. A gap of Rs 80.00/- between two prices is 4.0 per cent of the Rs 2,000.00/- exposure. A gap of that size between two contract prices is not the reference asset falling four per cent, and the difference between those two sentences is real rather than fussy.

Here is why. With time still to run, a contract price is the spot price carried forward at the financing rate, and the carry applies to the new spot as well as the old one. Suppose the spot price moved from Rs 2,000.00/- to Rs 1,920.00/-, a gap of Rs 80.00/-. Carrying Rs 1,920.00/- for a year at 6.50 per cent gives Rs 2,044.80/-. The contract price has gone from Rs 2,130.00/- to Rs 2,044.80/-, a gap of Rs 85.20/- rather than Rs 80.00/-. A gap of Rs 80.00/- in the spot price is a gap of Rs 85.20/- in a contract with a year still to run, so the two gaps are different numbers, and treating them as one teaches something false.

Every gap is therefore named as a gap between two stated prices, with the base it is measured against attached. The settlement price of Rs 2,050.00/- against the agreed price of Rs 2,130.00/- is a gap of Rs 80.00/-, and Rs 80.00/- is 4.0 per cent of the Rs 2,000.00/- exposure. Both halves of that sentence are doing work, and neither one alone is safe to repeat.

Which of the three is still the position holder's, and which is not?

Ownership is the distinction that separates understanding the machinery from memorising its vocabulary, and it is worth slowing down for. Two of the three have already been established as sums of money. The question now is whose money each of them is.

Initial vs Variation Margin: two collaterals that are not the same object

Initial margin is still the position holder's property, held as collateral and returned when the position is closed; variation margin that has been collected is gone, credited already to the party on the other side of the movement. That sentence is the whole section. Nothing about the arithmetic distinguishes the two. Rs 160.00/- and Rs 80.00/- are both rupees, both sit on the same statement, and both move the same balance. Only ownership separates them.

The everyday version again. The deposit a landlord holds is still the tenant's in a way that last month's rent is not. When the tenant leaves, the deposit comes back, adjusted for whatever it was held against. Last month's rent was not held but paid, for a month already lived in, and it never comes back under any circumstances. A tenant who thinks of both as money sitting somewhere on their behalf will one day be surprised, and the surprise will arrive on the day they need cash.

Which is exactly the shape of the mistake here. A position holder who watches the balance go Rs 160.00/-, Rs 80.00/-, Rs 120.00/- and reads it as a single pot swelling and shrinking has understood the arithmetic and misunderstood the object. Three separate facts sit behind those figures: Rs 160.00/- of their own collateral is still theirs, Rs 80.00/- was handed to somebody else and is not coming back, and Rs 40.00/- arrived later from that somebody as a separate event. The balance is the running total of those three facts, not a pot with a tide in it.

Does the difference matter if the arithmetic is identical? The difference matters the moment anybody has to find cash. Collateral still owned by the position holder can sometimes be met with something other than cash, it comes back at the end, and it does not leave the arrangement. A settlement is money out of the door on a date, to a party who now has it and is under no obligation to give it back if things improve. The two look the same in a spreadsheet and behave completely differently in a bank account.

There is a second consequence that is easy to miss. Because variation margin settles the movement in full each day, the amount anybody owes anybody else never accumulates. The obligation is extinguished daily rather than allowed to build. Daily settlement is a design choice, and its purpose is the timing of the call.

What is maintenance margin, if it is not a pot of money?

Maintenance margin is not a third amount put up alongside the first two: it is a level the collateral balance is watched against. Nobody transfers it. The level has no owner. Nothing about a line can be owned. The level sits below what was put up and above nothing at all, and its only job is to be reached.

Think about where it has to sit and the design explains itself. If the level sat at what was put up, every movement of any size would produce a call, and the arrangement would be asking for money constantly over amounts too small to matter. If the level sat at nothing, the arrangement would only ask once the backing was completely gone, and that is too late to ask. So it sits somewhere in between, and every choice about exactly where trades those two costs against each other.

When the balance reaches the level, a call goes out to restore the balance. Read that carefully. Restoring a balance is a different kind of event from settling a movement. The call is not a payment to the other side. Nobody on the other side receives anything from it. The money is collateral being made whole, and it stays the position holder's property once it arrives, exactly as the original Rs 160.00/- did. A call to restore the balance adds to what the position holder still owns; a settlement takes from it and hands it to somebody. Same word, opposite direction of ownership.

Now the frustrating part, and it is better said plainly. Where that level sits, and what the balance has to be restored to once it is reached, are worked out by clearing corporations under the framework of SEBI at sebi.gov.in. Both differ by contract and by day, and both move. The figure below draws the line and names the authority in place of a value. A reader who needs the number reads it from the contract specification on the day it is needed.

When does the call actually arrive, and why does the timing matter so much?

The call comes before the loss does. That is the sentence this whole guide is arranged around, and most readers have never had it put to them in those words.

Collateral is asked for while the position is still open. While the price is where it is. While the amount involved is one day's worth rather than a whole position's worth. And, crucially, while the party who has to find the money still has a position they want to keep. Their frame of mind then is very different from the one on the day the total is finally presented.

Follow the arithmetic of the alternative and the point becomes obvious. Under the arrangement as it actually works, the largest amount ever outstanding at any moment is one day's movement: Rs 20.00/- on a day when the gap between two prices is 1.0 per cent of the Rs 2,000.00/- exposure, or Rs 80.00/- on a day when it is 4.0 per cent. Under an arrangement that settled only at the end, eight days of Rs 20.00/- would sit unpaid and grow to Rs 160.00/-, and nothing would have been asked for along the way. An obligation large enough to hurt is an obligation somebody might decide not to meet, so the same total arriving as one demand instead of eight is a completely different object.

The same thing shows up in an ordinary arrangement between neighbours. A shopkeeper who lets one household run a tab and settles it weekly is carrying a week of risk. The same shopkeeper who lets the tab run for a year is carrying something else entirely, and not because the household changed. The size of what is outstanding is what changed, and past a certain size the household's incentive changes with it. Daily settlement is the shopkeeper insisting on a weekly tab, applied to a market.

So the timing is not an operational detail bolted onto the arrangement. The timing is the arrangement. Everything else exists to make the timing possible: the settlement price exists so there is something to call against, the initial margin exists so there is something there while the call is in transit, and the level exists so that somebody notices before the collateral has run out. Without the daily rhythm the other two stop making sense.

There is also a further call that can be made during a day rather than after it, when conditions inside a session make waiting until the close unwise. The existence of such a call is part of the machinery and worth knowing. When it is made, what triggers it and at what point in the day are worked out under the framework of SEBI at sebi.gov.in, and they move.

What happens if what was called for does not arrive?

The whole of this machinery is built backwards from that question, and the answer is not a negotiation. Everything above exists because somebody once asked what would be done if the money did not come, and then designed forwards from the answer.

Here is the shape, and only the shape. A call is made against the position, through the clearing memberThe party that faces the clearing corporation on behalf of a position holder. Obligations run through the member, and the member is the party being called on. that faces the clearing corporation for that position holder. A period runs during which it can be met. If the period ends and nothing has arrived, the position is closed outEnding a position without the position holder choosing to end it. The obligation stops running. A stated order then governs the collateral held against it., which means it is ended without the position holder choosing to end it. Further consequences then follow, in an order that was settled long before anybody needed it.

Why does an order have to exist in advance? Because the alternative is deciding on the day, and the day is exactly when nobody should be deciding anything. The party on the receiving end has every reason to argue for the version that suits them, everyone else has an equal reason to argue back, and the argument arrives at precisely the moment there is no time to have one. An order fixed in advance is the only kind of order that can be relied upon in the hour it is needed. A sequence protects through having been decided before anybody knew who it would be applied to, not through what is in it.

Now the honest part. The consequences, how long a party has to answer a call once it has been made, and the order in which the consequences apply are all worked out under the framework of SEBI at sebi.gov.in, and they move. The figure below draws the sequence and names the authority in place of the contents.

What may be put up as collateral, and what is it worth for that purpose?

So far every figure has behaved as though the Rs 160.00/- were cash. Cash is the simplest case and it is not the only one. Things other than cash may be put up as collateral, and the moment they are, a second question appears that cash never raises: what is the thing worth for this purpose?

Not what it is worth on a screen. The value for this purpose is a different and usually smaller number. Collateral that is not cash can itself move while it is being relied upon, so it is taken at less than its face value. The arrangement is holding it precisely so that it can be turned into money on a bad day, and a bad day for the position is quite likely to be a bad day for whatever was put up beside it.

The everyday version writes itself. Somebody borrowing against jewellery does not get a rupee for every rupee the jewellery is worth today, and the reason is not meanness. The lender has to be able to recover the amount lent on the worst day rather than the average one, and the value of the jewellery on that worst day is not today's value. Every conservative valuation in finance is that same sentence in a different costume.

Which kinds of things may be put up, and what each is worth for this purpose, are worked out under the framework of SEBI at sebi.gov.in. Both differ by kind and by day, and both move. The shape of the rule can still be described, and the statement drawn below carries those rows with the authority named in place of a value.

One point that follows from the shape and is worth holding on to. The more the collateral is something that moves, the less of its face value it can be counted for, and the more of it has to be put up to stand under the same exposure. So a position holder who puts up something other than cash is not avoiding the requirement; they are meeting it with a different thing at a different rate. The requirement did not shrink.

What does a run of perfectly ordinary days do to a collateral balance?

Everything so far has used a single dramatic day: a gap of Rs 80.00/- between two prices, being 4.0 per cent of the exposure, taking half the collateral in one go. People remember the dramatic day, and the dramatic day is not what catches most readers out. The one that does is the boring one.

Take a mark of 1.0 per cent of the Rs 2,000.00/- exposure, being Rs 20.00/- against the position, and then simply repeat it. Nothing about any of those days is remarkable. A one per cent gap between the previous settlement price and today's is the sort of thing that happens without anybody commenting on it.

Four such days take the balance from Rs 160.00/- to Rs 80.00/-, or 50.0 per cent of what was put up, reached without a single dramatic day anywhere in it. Eight such days take the whole of the Rs 160.00/- that the teaching percentage put there, and the line is straight the entire way. The arithmetic is what deserves respect, not any one frightening day.

Now why the run stops at eight rather than at some other number. The coincidence is not a coincidence. Eight days of 1.0 per cent is 8.0 per cent of the Rs 2,000.00/- exposure, or Rs 160.00/-. And one divided by 12.50 times of leverage is 0.08, so 8.0 per cent of the exposure is exactly what the initial margin was. So the number of ordinary days it takes to empty the balance is simply the reciprocal of the leverage, expressed in days of that size. Halving the margin percentage halves the number of days. The relationship holds whatever the real percentage turns out to be, and a teaching figure can carry it honestly for that reason.

And here is the half that readers forget. Nothing silent happened across those eight days: a call went out on every single one of them. The reader watching that table is not watching a position quietly fail. The reader is watching a balance thin while the arrangement asks, out loud, eight separate times. Only the total looks dramatic, and the total is the one thing nobody was ever asked for all at once.

Is this figure a price, a payment or a net?

Every figure in this guide says which of three things it is, and the label belongs inside the sentence rather than in a note beneath it. A PRICE is what is agreed, quoted or determined: Rs 2,000.00/- as the spot price and the exposure on one unit, Rs 2,130.00/- as the agreed price, Rs 2,050.00/- as the settlement price determined for a day. A PAYMENT is what actually leaves or reaches an account: Rs 80.00/- collected on the first day, Rs 40.00/- credited on the second. A NET is what is left once obligations in both directions have been set against each other.

Mixing the three is the commonest error in this machinery, and it happens because a settlement price of Rs 2,050.00/- and a payment of Rs 80.00/- sit in the same sentence and only one of them is money moving. Say the label out loud with the figure and the sentence stops being ambiguous, whoever reads it afterwards.

Check the last row rather than taking it. Rs 80.00/- travelled out and Rs 40.00/- travelled in, so Rs 120.00/- moved in total and Rs 40.00/- survives as the difference. The gross and the net are both true and they answer different questions: the gross is what the arrangement handled, the net is what the position holder is down. Setting many obligations against each other before anything is called is a subject of its own and is covered separately. The word net simply carries a meaning distinct from the other two.

What question about carrying a position can no general text answer?

A reader who has followed the arithmetic is by now asking a further question. Should anybody be on the receiving end of an arrangement that can call four days running without anything remarkable happening? The question is the right one to ask.

No general text answers that question. The answer is not uncomfortable; it turns on things about a particular person's circumstances that no general text can hold.

Here is what would have to be known first, and it is worth reading as a checklist rather than as a refusal. The job the position exists to do. A position taken to offset something a business already carries is a different object from one taken on its own. The collateral already held against it. The amount put up so far. The other things that could be put up at short notice, and how quickly. And, because the call is most likely to arrive on the worst day, the cash reaching the account on that day rather than on an average one.

There is a second reason, and it is structural rather than cautious. Arithmetic on a worked example holds no outcome, no track record, no probability and no distribution of any kind, so how a position turns out cannot be read off these figures at all. Understanding how a call works is not a reason to be on the receiving end of one, and the two questions are separate.

The reference asset, the clearing corporation, the clearing member and the position holder are invented.
Educational material. Not advice on any investment, tax, budget or market position.