CLS: payment-versus-payment FX settlement
Bank Alfa and Northstar Bank settle a matched EUR/USD trade through CLS, the payment-versus-payment settlement service. Each bank pays in its currency leg through a central-bank real-time gross settlement system; CLS releases the two legs together so neither side can pay without being paid. (SYNTHETIC / TRAINING ONLY)
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The matched FX trade is submitted to CLS
Bank Alfa (EUR seller) → CLS (PvP settlement service) · FX settlement instruction
Both banks send matching settlement instructions for their agreed EUR/USD trade. CLS pairs the two sides — Bank Alfa is due to deliver euros and receive dollars, Northstar the reverse — and takes the pair in for settlement.
Step 1 of 8: The matched FX trade is submitted to CLS
- 02ProcessingCLS builds the pay-in scheduleCLS (PvP settlement service)
- 03SettlementBank Alfa funds its euro legBank Alfa (EUR seller) → EUR RTGS (central-bank system)
- 04SettlementNorthstar Bank funds its dollar legNorthstar Bank (USD seller) → USD RTGS (central-bank system)
- 05ProcessingCLS checks both legs are fundedCLS (PvP settlement service)
- 06SettlementBoth legs settle simultaneously on CLS booksCLS (PvP settlement service)
- 07PostingCLS pays out the settled balancesCLS (PvP settlement service)
- 08ProcessingPositions are final on both sidesCLS (PvP settlement service)
Full step-by-step text (works without JavaScript)
- 02ProcessingCLS builds the pay-in scheduleCLS (PvP settlement service)
CLS nets each member's positions across all its trades for the day and tells every bank how much of each currency to fund, and by when. A pay-in schedule funds many trades at once, not one payment per trade.
- 03SettlementBank Alfa funds its euro legBank Alfa (EUR seller) → EUR RTGS (central-bank system)
Bank Alfa pays euros to CLS's account through the euro central-bank system. This funding is itself settled in central bank money, so once it lands it is final and cannot be pulled back.
- DR Bank Alfa account at EUR RTGS — EUR 9,200,000.00
- CR CLS EUR account at EUR RTGS — EUR 9,200,000.00
- 04SettlementNorthstar Bank funds its dollar legNorthstar Bank (USD seller) → USD RTGS (central-bank system)
Northstar pays dollars to CLS's account through the dollar central-bank system. Each currency is funded in its own home system, which is why CLS holds accounts in every currency it settles.
- DR Northstar account at USD RTGS — USD 10,000,000.00
- CR CLS USD account at USD RTGS — USD 10,000,000.00
- 05ProcessingCLS checks both legs are fundedCLS (PvP settlement service)
Before settling the pair, CLS confirms both currency legs are fully paid in and that each member stays within its risk limits. This checkpoint is what makes the next step safe to release.
- 06SettlementBoth legs settle simultaneously on CLS booksCLS (PvP settlement service)
CLS debits and credits the two currency accounts in the same instant. Bank Alfa's euros go to Northstar and Northstar's dollars go to Bank Alfa together — payment versus payment — so neither bank is ever exposed to paying without being paid.
- DR Bank Alfa EUR position at CLS — EUR 9,200,000.00
- DR Northstar USD position at CLS — USD 10,000,000.00
- CR Northstar EUR position at CLS — EUR 9,200,000.00
- CR Bank Alfa USD position at CLS — USD 10,000,000.00
- 07PostingCLS pays out the settled balancesCLS (PvP settlement service)
Once the pair has settled, CLS returns each bank's net positive balances in each currency. Bank Alfa receives its dollars and Northstar its euros, booked back out through the home central-bank systems.
- CR Bank Alfa USD account — USD 10,000,000.00
- CR Northstar EUR account — EUR 9,200,000.00
- 08ProcessingPositions are final on both sidesCLS (PvP settlement service)
The trade is settled end to end: each bank delivered one currency and received the other, with no window in which one had paid and the other had not. Both banks reconcile the settled legs against the original trade.
What this simplifies: One EUR/USD trade, one settlement session, direct members only. Real CLS settlement nets many trades across many members each day, funds them on a strict pay-in schedule, and settles inside its own multi-currency books. Amounts are illustrative.
Sources for this flow3
- Official requirement
Principles for financial market infrastructures ↗ — CPMI and IOSCO (Bank for International Settlements)
Published by the CPSS (now CPMI) and IOSCO; contains 24 principles plus responsibilities for authorities. This site uses it only for high-level concepts such as settlement finality.
- Market practiceMarch 2003 edition
A glossary of terms used in payments and settlement systems ↗ — CPSS (now CPMI), Bank for International Settlements
Terminology has evolved since this edition; newer CPMI publications refine some definitions.
- Simplified educational illustration
Payments Signal editorial teaching models — Payments Signal
What this simplifies: One trade shown in isolation, with round illustrative amounts, inside what is really a multilateral net across every member and trade in the day's session. CLS/PvP scheme-specific operational detail was not re-verified against primary operator docs this pass (environment egress limits).
Used wherever diagrams, scenarios, figures, or example values are didactic constructions rather than sourced facts; every such use carries a simplifications disclosure. All people, companies, banks, and list entries in examples are fictional.