
A zero-coupon swap is an interest-rate swap where one party makes a single lump-sum payment at maturity instead of periodic fixed or floating payments during the life of the swap. The other leg may involve periodic payments or another agreed cash-flow structure. The instrument is used to match cash flows that are back-ended or linked to zero-coupon debt.
Zero-coupon swaps are used by banks, insurers, pension funds, project finance companies, and treasury desks that need long-dated interest-rate hedges with non-standard cash-flow timing. They may be useful when an entity has a liability that accrues over time and is paid at maturity, or when it wants to transform the timing of interest payments for risk-management purposes.
Key features may include:
• Notional principal agreed upfront.
• One leg accrues interest to maturity.
• Lump-sum payment made at the end.
• Other leg may pay fixed, floating, or another structured rate.
• Valuation depends on yield curves, discounting, compounding, collateral, and counterparty risk.
Because cash flows are concentrated at maturity, valuation and credit exposure can be more sensitive than in a plain vanilla swap.
Zero-coupon swaps can be useful for precise liability matching, but they are complex and require strong treasury governance. The absence of periodic payments does not mean absence of risk. Mark-to-market movements, counterparty exposure, collateral calls, and accounting treatment can be material. Businesses should use them only when the structure clearly matches an identified exposure and is approved under a formal derivative policy.