Each NAC holds the rights to, and manages the productivity and ecological benefits of,
natural assets such as
forests, working
ranches and
farms,
grasslands, or marine areas. NACs, which are managed by a board of directors and management team, are operated to maximize the ecological value of a designated area under management. NACs assign value to
ecosystem services, such as carbon retention, freshwater generation,
groundwater storage, and
erosion prevention. The quantity and quality of ecosystem services production, along with the underlying value of the natural assets, are measured and reported annually. NACs integrate both traditional cash flows (e.g., from agriculture, carbon credits) and ecological performance value into their equity structure. They produce two types of reports: traditional financial statements (
GAAP/
IFRS) and Ecological Performance Reports (EPRs) to account for non-traditional natural asset and ecosystem services value. In May 2025,
Fordham University’s Gabelli School of Business formed a partnership with IEG to establish a new, independent standards-setting body to develop, maintain, and oversee global accounting and reporting standards for natural capital. IEG licensed its Ecological Performance Reporting framework, used to value NACs, to Fordham. The accounting and reporting framework, which is based on the
United Nations System of Environmental Economic Accounting - Ecosystem Accounting (SEEA EA), was developed for natural asset companies. ==Origins and development==