RBS - Credit Card Online Service typically allows cardholders to manage their spending through various features, but setting spending limits may not be a standard option directly available within the account settings. However, users can often utilize customizable alerts or notifications that help monitor their spending habits. This can often provide a sense of control over expenditures without imposing a hard limit on the card itself. It is advisable to regularly review transaction activity and set personal budgets to stay informed about spending. For detailed options or potential changes in features regarding spending limits, it may be beneficial to explore the latest information on the official website of RBS - Credit Card Online Service, where updates regarding such features are frequently published.