FRM Exam Part II · Counterparty Risk and Beyond

Central Counterparties and OTC Market Reform Explained

Updated 11 October 2026 · Fact-checked

A central counterparty (CCP) steps between buyer and seller through novation, becoming the buyer to every seller and the seller to every buyer. It cuts counterparty risk by netting, margin and a default waterfall that mutualises losses. To solve questions, trace the defaulter's losses through each layer in order.

Understand Central Counterparties and OTC Market Reform

In the bilateral OTC market, two parties trade directly. Each carries the credit risk of the other. A web of bilateral trades means one default can spread losses to many firms. This was a major concern in the 2008 crisis.

A central counterparty (CCP) removes this web. Through novation, the original contract is replaced by two contracts: one between the seller and the CCP, and one between the CCP and the buyer. Each clearing member now faces the CCP, not the other trader. Exposures are multilaterally netted, so a member's total exposure across all its trades with the CCP is often much smaller than the sum of its bilateral positions.

The CCP does not remove risk. It concentrates it. To protect itself it collects variation margin (VM), paid daily to reflect gains and losses on positions, and initial margin (IM), a buffer against losses during the margin period of risk, the time to close out a defaulter's positions. Members also contribute to a default fund. IM is set to cover a high-confidence loss, often 99% or higher, using VaR-style or similar models.

If a clearing member defaults, the CCP uses a default waterfall. The usual order is: the defaulter's initial margin, the defaulter's default fund contribution, the CCP's own capital (often called skin in the game), then the default fund contributions of the surviving members, and finally further recovery tools such as assessments or variation margin gains haircutting. The exact layers and order vary by CCP, so follow the order given in the question.

Post-crisis reforms followed the G20 commitments of 2009. Standardised OTC derivatives should be centrally cleared, traded on exchanges or platforms where appropriate, and reported to trade repositories. Non-centrally cleared trades face higher capital charges and mandatory margin requirements (BCBS-IOSCO). The key trade-offs are less contagion and more transparency against concentration, procyclical margin calls, liquidity strain and the risk that a CCP itself becomes too big to fail. Because of that last risk, CCPs need recovery and resolution planning.

Key formulas to remember

Novation: Original trade A↔B becomes A↔CCP and CCP↔B; The CCP is buyer to every seller and seller to every buyer. Its net position is zero when no member defaults.
Variation margin: VM = change in mark-to-market value of the position; Paid at least daily. It removes accumulated exposure, so only the margin period of risk remains.
Initial margin: IM ≈ loss at a high confidence level (e.g. 99%) over the margin period of risk; Set on a portfolio basis. Longer margin period or more volatile products need more IM.
Default waterfall order: Defaulter IM → defaulter default fund → CCP own capital → survivors' default fund → further recovery tools; Typical order. Use the order stated in the question if it differs.
Netting benefit: Net exposure = max(Σ trade values, 0) per netting set; gross exposure = Σ max(trade value, 0); Multilateral netting at a CCP lowers exposure compared with bilateral gross positions.

How to solve Central Counterparties and OTC Market Reform questions

Use this method for any question on clearing, CCPs, the waterfall or OTC reform.

1Identify whether the trade is bilateral or centrally cleared, and who faces whom.
2Check whether novation and netting apply, and compute net exposure per netting set if numbers are given.
3Separate variation margin (current exposure) from initial margin (potential future exposure over the margin period of risk).
4For a default question, list the waterfall layers in order and subtract the loss layer by layer until it is covered.
5Note whose money is used at each layer: the defaulter's resources first, then the CCP, then survivors.
6Name the risk that remains or arises: concentration, procyclicality, liquidity, moral hazard, CCP failure.
7Match the answer to the reform: G20 clearing mandate, trade reporting, or BCBS-IOSCO margin rules for uncleared trades.

Quickest way: Layer-by-layer waterfall check

When to use it: Numerical default waterfall questions and 'which statement is correct' questions.

Write the loss and the layers in order on your scratch sheet.
Subtract each layer until the remaining loss is zero.
Stop at the layer that absorbs the last of the loss; later layers are untouched.
For conceptual options, eliminate any that say a CCP eliminates risk or that survivors pay before the defaulter.

Common mistakes in Central Counterparties and OTC Market Reform

Saying a CCP eliminates counterparty risk.
Novation sounds like it removes the other party.
Fix: A CCP transforms and concentrates risk. Members still face CCP default and loss mutualisation risk.
Putting survivors' default fund contributions before the defaulter's own resources.
Students remember 'mutualisation' and forget the order.
Fix: The defaulter pays first: its IM, then its default fund contribution. Survivors come later.
Confusing initial margin with variation margin.
Both are collateral posted to the CCP.
Fix: VM settles current mark-to-market changes. IM covers potential losses while closing out a defaulter.
Assuming netting always cuts exposure at a CCP for each member.
Netting is taught as a benefit.
Fix: Netting benefits depend on offsetting trades within the same netting set. Fragmentation across several CCPs can reduce them.
Ignoring the downsides of clearing mandates.
Reform is presented as purely positive.
Fix: Remember procyclical margin calls, liquidity demands, concentration and the need for CCP recovery and resolution.

Worked examples

Example 1

A CCP member defaults, leaving a loss of $480 million after close-out. The defaulter's initial margin is $210 million and its default fund contribution is $40 million. The CCP's own capital layer is $25 million. The surviving members' default fund contributions total $300 million. Using the standard waterfall order, how much of the survivors' default fund is used?

Show the solution

Layer 1: defaulter's IM covers $210 million. Remaining loss = 480 − 210 = $270 million.
Layer 2: defaulter's default fund contribution covers $40 million. Remaining = 270 − 40 = $230 million.
Layer 3: CCP's own capital covers $25 million. Remaining = 230 − 25 = $205 million.
Layer 4: survivors' default fund must cover $205 million, which is less than $300 million, so the waterfall stops here.

Answer: $205 million of the survivors' default fund is used. Further recovery tools are not needed.

Example 2

Bank A has three OTC trades with Bank B in one netting set, with mark-to-market values of +$30 million, −$12 million and +$5 million to Bank A. Compare Bank A's gross and net exposure to Bank B. Why does clearing the trades with a CCP also require initial margin?

Show the solution

Gross exposure = sum of positive values = 30 + 5 = $35 million.
Net exposure = 30 − 12 + 5 = $23 million, which is positive, so exposure is $23 million.
Netting reduces exposure by 35 − 23 = $12 million.
If trades are cleared, variation margin settles the $23 million mark-to-market daily.
Initial margin is still needed because the CCP could face further price moves during the margin period of risk before it closes out a defaulter's positions.

Answer: Gross exposure is $35 million and net exposure is $23 million. Initial margin covers potential loss in the close-out period that variation margin cannot.

Exam tips

Memorise the waterfall order and read the question for any CCP-specific change.
In 'best answer' MCQs, prefer options saying risk is concentrated or mutualised, not eliminated.
Distinguish clearly between G20 reforms (clearing, reporting) and BCBS-IOSCO uncleared margin rules.
Watch units: millions versus billions, and which party posts the margin.
For benefit-versus-risk questions, give one gain (less contagion, transparency) and one cost (concentration, procyclicality).

Practice questions from Counterparty Risk and Beyond

Central Counterparties and OTC Market Reform in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

FRM Part ICentral Clearing and Central Counterparties (CCPs)

Central Counterparties and OTC Market Reform: frequently asked questions

How do CCPs reduce counterparty risk?

They use novation to face every member, multilateral netting to cut exposures, daily variation margin and initial margin, and a default fund. These resources absorb a member's default before losses reach other members.

What is the CCP default waterfall?

It is the ordered set of resources a CCP uses after a clearing member defaults. Typically it starts with the defaulter's margin and default fund contribution, then CCP capital, then survivors' default fund contributions, then further recovery tools.

What is the difference between bilateral and central clearing?

In bilateral clearing, two counterparties face each other and manage the risk through netting agreements and collateral. In central clearing, a CCP becomes counterparty to both sides, with standardised margining and loss sharing among members.

Why can central clearing create new risks?

Risk is concentrated in a few CCPs, so a CCP failure would be systemic. Margin can rise sharply in stress, which strains members' liquidity. This is why CCPs need strong risk management and recovery and resolution plans.