A deviation from the standard mechanism, however, is in force for deliveries of taxable goods and services to VAT collectors. The VAT Collector is currently either the State Treasury or PSC (Production Sharing Contract) companies. As the name implies, a VAT Collector is required to collect the VAT due from a taxable enterprise (vendor) on the delivery to it of taxable goods or services and to pass the VAT payment directly to the government, rather than to the vendor or the service provider. A company engaged in deliveries of taxable goods or services mainly to a VAT Collector tends accordingly to be in an overpaid VAT position.