f) The Treasury needs to extend its incentives to encourage public bodies to keep more money in accounts at the Exchequer, for example, by making bodies' performance in this regard more transparent. It could also, together with the Government Banking Service, take a more active approach to achieving compliance with its guidance on minimising commercial balances. Any of these steps would need to be taken in a way that minimises unintended behaviours, and would also incur some limited additional staff cost. However, new mechanisms are critical in shifting the focus away from just accurate forecasting. The most cost-effective system would be for all public bodies to bank with the Exchequer and manage their cash in accordance with the guidance without the need for incentives.