Interbank rates

Interbank rates are the interest rates at which banks lend unsecured funds to one another over short periods. These rates form the foundation of broader interest rate markets and influence financing costs across the energy trading ecosystem.

In energy markets, interbank rates matter because physical trading is capital intensive. Cargo purchases, inventory holding, and margin posting are often financed using short-term borrowing linked directly or indirectly to interbank benchmarks.

Changes in interbank rates affect the cost of holding inventory, funding derivatives margin, and financing infrastructure. Rising rates increase carry costs, making storage less attractive and influencing trading strategies.

Example: an oil trader financing a crude cargo may pay interest linked to an interbank benchmark plus a credit spread. If interbank rates rise sharply, the economics of holding inventory deteriorate, potentially leading to destocking and price pressure. As a result, macroeconomic shifts transmitted through interbank rates can materially impact energy market behaviour.