This discussion clarifies whether a composite registered Saw Mill needs to pay 18% Reverse Charge Mechanism (RCM) tax when purchasing timber from an unregistered person or dealer (URD). The RCM mechanism requires the recipient (the Saw Mill) to pay GST directly to the government on behalf of the supplier. This applies to goods and services, especially when the supplier is unregistered or the transaction value is high. Expert advice suggests this is applicable in such scenarios.