Which payment method allows for the immediate processing of funds?

The payment method that allows for the immediate processing of funds is RTGS, which stands for Real-Time Gross Settlement. This system is designed to facilitate the instant transfer of funds between banks on a one-to-one basis. In an RTGS system, transactions are settled in real time, meaning that as soon as the payment instruction is received, the funds are transferred between the banks without any waiting period. This immediacy is crucial for transactions that require quick settlement, such as high-value interbank transactions.

In contrast, other payment methods have different processing times. Cheques, for example, can take several days to clear as they need to be physically deposited and processed through the banking system. Cash is instantaneous but is limited to physical transactions and does not have the same electronic system as RTGS to facilitate large or remote transactions. Credit cards may provide quick confirmations for the merchant, but the actual payment settlement between banks can take a little longer as it often goes through a batch processing system rather than being settled immediately.

Therefore, RTGS stands out as the most efficient method for immediate fund processing among the options provided.