The Ministry of Environment and Forestry, with the support of the National Institute for Aeronautics and Space (LAPAN) and others have been developing the Indonesian National Carbon Accounting System (INCAS) for several years now. The INCAS is designed as a Tier 3 type greenhouse gas (GHG) accounting system that has been developed to support Indonesia’s Measurement, Reporting and Verification (MRV) requirements for the land based sectors, including REDD+ activities. The INCAS Standard Methods have already been developed and trailed over the Central Kalimantan Province, producing a historical account of GHG emissions and removals from key REDD+ activities on forest and peat lands. On 27 March 2015, Minister Siti Nurbaya formally endorsed the INCAS as Indonesia’s official MRV system for the land based sectors, including REDD+ activities. In doing so, the Minister also committed to launching the first national results from INCAS at COP21 in Paris in late 2015. The development of the INCAS at the national level is now well advanced and national results are on schedule for completion in time for reporting at COP21 in Paris. CIFOR, in partnership with the Australian Government have been providing capacity building support to the Government of Indonesia (GOI) to assist in their development of the INCAS as part of Indonesia’s broader MRV framework for REDD+ activities. This support is delivered through the INCAS Program. The main objective is to maintain the strong progress made in the development of the system and ultimately allow for the completion of Phase 1 according to the INCAS Roadmap. This extension will also support the operationalisation of the system as part of Indonesia’s official MRV framework for the land sector and the commencement of activities under Phase 2 of system development. Specific objectives include: • Support the finalisation of the first INCAS national level account of GHG emissions and removals from REDD+ activities on Indonesia’s forest and peat lands • Assist the GOI in its commitment to report the first INCAS national results to UNFCCC at COP21 in Paris • Support the continued development and operationalisation of the INCAS as part of Indonesia’s official MRV framework for the land sector • Further build the capacity of Indonesian government officials and national experts to allow for the sustainability of the INCAS as a GOI owned and operated system • Share lessons learnt from the development of the INCAS with the global community, with a focus on countries that work with the Global Forest Observations Initiative (GFOI) and others seeking to implement similar systems.