Every trade in a bank's markets business, regardless of product or counterparty, passes through the same three-phase lifecycle: pre-trade, at-trade (execution), and post-trade. The sophistication and speed of each phase varies enormously by product — a vanilla FX spot trade may complete all three phases in seconds, while a bespoke long-dated cross-currency swaption may take weeks to reach final legal confirmation. But the structure is universal. This article traces the lifecycle of a 10-year GBP interest rate swap between a bank and an asset management client, as a practical illustration of each phase.
Phase 1: Pre-Trade
The pre-trade phase encompasses everything that must happen before the trade can be executed. It is often invisible to the client but involves significant work within the bank.
Credit Check
Before any derivative can be traded with a counterparty, the bank must have an approved credit line in place. The credit risk team maintains a counterparty credit limit for each client — defining the maximum exposure (measured in terms of current mark-to-market value plus potential future exposure) the bank is willing to accept. When a client requests a price on a new trade, the sales desk or the risk system automatically checks whether the proposed trade would fit within the available credit capacity. If the trade would breach the limit, the desk must obtain a temporary limit increase or decline to trade.
For centrally cleared swaps — which is now the norm for vanilla GBP interest rate swaps — the counterparty credit check is replaced by a check on the client's clearing membership status and the availability of initial margin capacity at the relevant CCP (typically LCH SwapClear for GBP IRS).
Documentation
Trading any OTC derivative requires an ISDA Master Agreement and (for bilateral trades) a Credit Support Annex to be in place. For established clients, these are negotiated once and remain in place indefinitely. For new clients, the documentation process can take weeks or months and must be completed before any trading can occur. The legal and credit teams are involved in negotiating and approving the documentation terms.
Pricing
The salesperson requests a price from the trader, specifying the exact terms of the trade: the notional (say, £100 million), the tenor (10 years), the structure (pay fixed, receive SONIA), and any other relevant terms. The trader assesses the current market, their existing book position (which affects how attractive the trade is to add), and any XVA charges embedded by the XVA desk, and returns a price to the salesperson. The salesperson then decides how much spread to add (the sales margin) before communicating the all-in price to the client.
Phase 2: At-Trade (Execution)
The at-trade phase begins when the client agrees to transact at the quoted price and ends when the trade is legally confirmed between the parties.
Execution
The client agrees the trade verbally or electronically. For a cleared IRS, this may happen via a SEF (in the US) or through a voice conversation with the salesperson confirming the economics. The moment of agreement is the legally binding point at which both parties are committed.
Booking
Immediately following execution, the trade is booked into the bank's trading systems. The front-office trader enters the trade details — counterparty, notional, start and end dates, fixed rate, floating index, payment frequency, day count convention — into the risk system. Trade Support (the middle office) reviews the booking for accuracy, checking that all parameters match the trade as executed and that any system or model flags are investigated and resolved.
Confirmation
For OTC derivatives, a legal confirmation must be sent to the counterparty documenting the exact terms of the trade. For cleared swaps submitted to LCH SwapClear, confirmation is handled electronically through the CCP's systems — the submitted trade details are matched and confirmed algorithmically within minutes. For bilateral (uncleared) trades, a confirmation is generated (typically via the SWIFT MarkitWire or TriOptima systems) and must be matched and agreed by the counterparty. Regulatory timelines require confirmations to be sent within one business day for most derivative types.
Novation to CCP
For a centrally cleared IRS, the bilateral trade between the bank and the client is novated to LCH SwapClear. This means that LCH steps between the two parties: the original bilateral trade is replaced by two new trades — one between the bank and LCH, and one between the client (via their clearing member) and LCH. LCH becomes the buyer to every seller and the seller to every buyer, eliminating bilateral counterparty credit risk. Initial margin is posted to LCH by both parties at the time of novation.
Phase 3: Post-Trade
The post-trade phase begins after the trade is confirmed and continues for the entire life of the transaction — in the case of a 10-year swap, that is a decade.
Daily Variation Margin
Each business day, LCH (or the bilateral CSA for uncleared trades) calculates the mark-to-market value of the swap and calls for variation margin from the losing party. If interest rates have moved against the client's position (for example, rates have risen and the client is paying fixed), LCH will call on the client to post additional cash as variation margin. This daily cash settlement effectively converts the swap into a series of one-day forwards, and means that the largest daily P&L move is limited to one day's change in value.
Lifecycle Events
Over the life of a swap, various lifecycle events must be managed: payment dates (when the net interest payment is exchanged between the parties); resets (when the floating rate is determined for each new period, by reference to the published SONIA compounding rate); and potential amendments if the client wishes to unwind, novate to a third party, or restructure the swap. Each of these events must be processed accurately by Trade Support and Operations.
Trade Reporting
Under EMIR (in the UK and EU) and Dodd-Frank (in the US), all OTC derivative trades must be reported to a Trade Repository within one business day of execution, and the outstanding position must be updated for all lifecycle events. This creates a significant operational burden and a detailed regulatory record of all derivative activity across the market.