Rayne is a Chartered Accountant with a background in corporate finance and is a globally recognised pioneer in corporate sustainability and natural capital reporting. As a former CFO for Forico, Tasmania’s largest private forest manager, Rayne helped to transform corporate decision-making to incorporate the cost of externalities and the value of natural capital. She witnessed the signing of the Global Biodiversity Framework in Montreal. She presented the world’s first Integrated TCFD (Task Force on Climate-related Financial Disclosures.) & TNFD (Taskforce on Nature-related Financial Disclosures) Disclosure for Forico at Climate Week at the global launch of the TNFD’s recommendations in September 2023. More recently, she participated in a worldwide convening on how to put Nature on Balance Sheets.

As of March 2025, Rayne has been leading Value Australia. This regional Capitals Coalition hub focuses on promoting market confidence and supporting capacity building in Natural and Social Capital Valuation and Reporting.  The hub will build on global and regional momentum, accelerating decision-making by business, finance, and policy on all capitals by mobilizing the influential network into a collaborative space to shape the regional impact economy of the future.  She will also be leading a project with the International Sustainable Forestry Coalition and Capitals Coalition, supported by TNFD, to guide more than 18 of the world’s largest forestry owners to prepare standardised Natural Capital Reports by COP31.