This Practice Note covers the accounting treatment of joint arrangements, including joint ventures and associates. This is an area of accounting which can create difficulties in practice as, while on the face of it, the requirements of the relevant accounting standards look relatively simple, they can actually be quite complex to apply. The accounting requirements of IFRS and FRS 102 are relatively similar, although old UK GAAP was significantly different in some areas. Old UK GAAP has not been covered in this Practice Note other than incidentally, as FRS 102 applies for accounting periods beginning on or after 1 January 2015 and is therefore likely to apply to the vast majority of current and future transactions involving joint ventures and associates. As FRS 102 and IFRS are relatively similar, key differences have been highlighted rather than analyse in detail the accounting under each financial reporting framework. Where difficulties tend to arise is on determining what the substance of an arrangement is and the degree of control or influence actually