Clearing is the process of reconciling trades and establishing the obligations to be settled, potentially including confirmation and netting. For a quant desk, it connects the executed trade record to the assets, cash and collateral the desk must provide. An agreed trade price alone does not tell you the size or timing of those demands. The ECB’s market-infrastructure glossary also includes daily profit-and-loss balancing and collateral calculations in the clearing of futures and options.
A clearing house can provide a common processing arrangement. When it acts as a central counterparty, or CCP, it also takes on contractual obligations to the clearing participants. Clearing does not always involve a CCP. Bilateral arrangements can reconcile trades and manage obligations between the original parties.
From a trade record to an obligation
Order execution establishes the trade: the instrument, quantity, price and other terms. Clearing checks and reconciles the relevant records, determines the obligations and applies the arrangement’s rules. Those rules may allow eligible obligations to be netted and may require margin or other risk controls.
Settlement discharges obligations through the required transfers or other legally recognised means. Finality concerns when that discharge becomes unconditional and irrevocable. A calculated settlement instruction is not evidence that the asset has already arrived. The RBA’s settlement-finality guidance makes the legal point of finality central to that distinction.
A owes 100 units and is owed 60
Consider a synthetic bilateral arrangement between A and B. A must deliver 100 units of one asset to B, and B must deliver 60 units of that same asset to A. Both obligations are due for the same settlement, belong to the same eligible netting set, and are covered by a legally valid agreement permitting settlement netting. Ignore fees and delivery failures. No cash leg is shown.
| Delivery route | A delivers to B | B delivers to A | Sum of delivered units |
|---|---|---|---|
| Gross | 100 | 60 | 160 |
| Netted | 40 | 0 | 40 |
The gross route requires units to move across the two directions. Under the stipulated netting arrangement, one net delivery of units from A to B replaces them.
Original synthetic ledger, in units of one asset. Both obligations are eligible for the same legally valid settlement netting arrangement. Netting changes the required deliveries, not the parties’ net asset change; no cash leg, trading prices or profit are specified.
A ends with 40 fewer units and B with 40 more under either route. The reduction in delivery volume is not profit. Nor does this ledger measure cash funding, replacement-cost exposure or regulatory capital: those require additional information. Netting may reduce delivery and funding demands, but actual liquidity needs also depend on timing, collateral and the settlement rules.
The subtraction is valid here because eligibility and legal effect are explicit assumptions. An expected receipt in a different asset, on a different date or outside the applicable netting set cannot simply be subtracted. Netting is an agreed offset with legal consequences, rather than a convenient spreadsheet total; the ECB definition includes both the calculation and the legal reduction of obligations.
What central clearing adds
Netting asks which obligations can be offset. CCP interposition asks who becomes contractually responsible. They are different questions.
Under novation, an original contract is discharged and replacement contracts are created. In the ASX Clear cash-equity model, the CCP becomes counterparty to the respective clearing participants through this mechanism. Novation does not itself mean the resulting delivery has settled. The applicable legal mechanism and the point of CCP acceptance come from the arrangement’s rules.
Central clearing combines this interposition with risk management, including collateral and default procedures. It changes and concentrates counterparty credit risk; it does not eliminate every risk of non-performance or every need to fund a payment. A client commonly accesses the CCP through a clearing member, so the client’s contractual chain matters too.
For a broader comparison, Exchanges and OTC Markets explains why the execution venue and clearing arrangement are separate choices. The full lesson requires membership; its public page provides a preview.
Sources
- ECB: Payments and markets glossary — C, entries for clearing, clearing house and confirmation.
- ECB: Payments and markets glossary — N, entry for netting.
- ASX: Clearing, sections on novation, clearing participants and trade through to settlement.
- RBA: CCP Standard 8 — Settlement Finality, guidance on final discharge and its legal basis.
- John C. Hull, Options, Futures, and Other Derivatives, 9th Global Edition, Pearson, 2018, Chapter 2, §§2.4–2.5, pp. 54–55: clearing members, CCPs and bilateral clearing. The ledger and figure here are original synthetic illustrations.