Foreign Exchange Swap (FX Swap)
What is a Foreign Exchange Swap?
A foreign exchange swap (FX swap) is a financial contract that involves the simultaneous purchase and sale of the same amount of one currency against another, with two different settlement dates. It typically includes an initial exchange (near leg) and a reverse exchange (far leg), locking in FX rates for both legs and creating a temporary currency position.
How FX Swaps Work
FX swaps combine two FX transactions into one integrated contract. The structure includes:
- Near leg: Initial currency exchange, usually spot (T+2) or forward-dated.
- Far leg: Reverse transaction at a future date with a predetermined forward rate.
Swap pricing reflects interest rate differentials (swap points) between the two currencies. The structure eliminates ongoing exposure by ensuring both entry and exit of currency positions are predefined.
FX Swap Example
Company A exchanges $10M for €8.5M today (near leg) and agrees to reverse the transaction in 90 days at a forward rate, receiving $10.05M back. The $50K differential reflects the USD-EUR interest rate gap.
FX Swap vs. FX Forward
- FX Forward: One-way contract to exchange currency at a future date.
- FX Swap: Two-way contract—buy and sell the same amount with two settlement dates.
- Purpose: FX Forwards hedge future flows; FX Swaps manage liquidity and temporary exposure.
When Would You Use an FX Swap?
- Cash flow timing: Temporarily convert currency to cover short-term needs.
- Liquidity access: Obtain funding without permanent conversion.
- Rolling hedges: Extend existing forwards without closing and reopening.
- Hedge preservation: Avoid disrupting accounting treatment.
- Covered arbitrage: Exploit interest rate differentials.
Key Components: Near Leg vs. Far Leg
- Near leg: Initiates the swap; spot or short-dated forward.
- Far leg: Closes the swap; always forward-dated.
- Swap points: Adjusts the far leg rate based on interest rate differentials.
- No interest payments: Only principal exchanges occur.
FX Swap Settlement
- Contract is agreed with both FX legs defined.
- Near leg settles on T+2 or agreed date via currency transfer.
- Far leg settles on maturity via reverse transfer.
- Accounting reflects principal movements only, not interest income.
FX Swap Pricing
FX swap pricing is derived from covered interest parity. The forward rate is calculated as:
Forward Rate = Spot Rate × (1 + interest rate of base currency) / (1 + interest rate of quote currency)
The resulting forward points represent the cost of carrying the currency over time.
FX Swap Trading Strategies
- Covered Interest Arbitrage
- Carry Trade Support
- Liquidity Gap Bridging
- Rolling Hedging Positions
FX Swap vs. Currency Swap
- FX Swap: Short- to medium-term, no interest payments, principal-only exchanges.
- Currency Swap: Long-term, includes periodic interest payments, usually tied to debt instruments.
Why FX Swaps Matter
- Largest component of the global FX market by volume.
- Essential for treasury operations and liquidity management.
- Used by corporates, banks, central banks, and asset managers.
Related Terms
- FX Forward
- Cross-Currency Swap
- Swap Points
- Spot Rate
- Forward Rate
- Covered Interest Parity