This document clarifies issues related to input tax credit (ITC) availability and valuation for services provided between a head office (HO) and branch offices (BOs). For common services procured by the HO, it can either distribute ITC to BOs using the input service distributor mechanism or issue tax invoices to BOs allowing them to claim ITC. For internally generated services where BOs can claim full ITC, the HO can issue invoices and the value declared will be deemed the open market value, regardless of components included. For internally generated services where BOs cannot claim full ITC, the HO does not need to include employee salary costs when determining the taxable value supplied to BOs.