T This research aims to explain the regulatory gaps in recognizing carbon as a state asset based on the legal framework in indonesia and estimating the value of carbon emissions by considering the characteristics of indonesia\\\'s tropical ecosystem with ibukota nusantara (ikn) locus. this research is qualitative research to produce descriptive data. data collection techniques through document studies through content analysis of carbon-related regulations as well as literature reviews through synthesis of findings from journals, books and reports from national and international institutions. apart from that, interviews were also conducted with accounting experts in the government sector.this research also attempts to explain the importance of carbon which can be constructed as a state asset because it has economic value and can be measured. one of the related regulations is presidential regulation number 98 of 2021 concerning the economic value of carbon (nek). another accounting standard which in its development includes the environmental sector is the international public sector accounting standards (ipsas), ecosystem accounting system of environmental-economic accounting (seea ea), which was developed by the un international organization to integrate natural accounts in national accounting, including carbon stocks and carbon flows. furthermore, international accounting standards (ias) and international financial reporting standards (ifrs) in their development began to recognize non-financial assets such as carbon stored in trees. these carbon stocks can serve as underlying assets in carbon trading because they represent the amount of carbon stored and can be measured, verified, and converted into economically valuable carbon credits. however, government accounting standards (sap) have not yet adopted this.this research includes comparative studies regarding the treatment of carbon assets in brazil, congo, the united states, canada, the netherlands, norway and indonesia. based on the results of the comparative study, it can be explained that canada, the netherlands and norway can be references in applying the concept of carbon assets as state assets. these three countries have attempted to recognize carbon assets within the seea ea, ias/ifrs and ipsas frameworks.the main locus that is the target of the case study to assess the size of carbon assets in indonesia is ibukota nusantara (ikn), which is specifically stated in law number 3 of 2022 concerning national capital. in its development, ikn requires land that turns forest vegetation into open land and built-up land which produces carbon emissions and reduces the initial carbon stock value in forest area vegetation which can be interpreted as a decrease in the value of carbon assets through calculating carbon stocks and carbon credits. the calculated impairment loss value is the estimated value of carbon emissions in ikn.