This paper develops and simulates a model of the emergence of networks in an interbank, RTGS payment system. A number of banks, faced with random streams of payment orders, choose whether to link directly to the payment system, or to use a correspondent bank. Settling payments directly on the...

This paper investigates the effect of liquidity-saving mechanisms (LSMs) in interbank payment systems. We model a stylised two-stream payment system where banks choose (a) how much liquidity to post and (b) which payments to route into each of two ‘streams’: the RTGS stream, and an LSM...

This paper studies banks' incentives regarding the timing of payment submissions in a collateral-based RTGS payment system and how these incentives change with the introduction of a liquidity-saving mechanism (LSM). We show that an LSM allows banks to economise on collateral while also providing...