17 August 2025
To strengthen the understanding: Builders must ensure at least 80% of inputs and input services are sourced from registered suppliers. Any shortfall incurs 18% GST under RCM. Cement procurement from unregistered persons automatically triggers 28% GST under RCM, regardless of the 80% rule. Capital goods acquired from unregistered persons also attract RCM billing. Development rights, FSI, and long-term land leases provided to a promoter are taxable under RCM through separate entries. Construction services—the erecting of a building intended for sale—are generally GST liable @18%, with an effective rate close to 12% when valuing land correctly.