Tax exemption power permits government to exempt goods or services by notification or special order, restricting supplier charges. The Government, on the Council's recommendation and in the public interest, may exempt specified goods or services from whole or part of the tax by notification (absolute or conditional) or by special order in exceptional cases; it may insert clarifying explanations within one year which operate as part of the original notification or order; Central Government notifications under the corresponding Central Act are deemed notifications under this Act; and where an absolute exemption is granted, the registered supplier must not collect tax in excess of the effective rate.