As humanity stands on the cusp of an interstellar age, propelled by advancements in quantum computing, artificial intelligence (AI), and space exploration, the disciplines of accounting and financial management face unprecedented transformations. This paper explores how accounting will adapt to the new economic, social, and technological paradigms of interstellar expansion. Drawing from scholarly and futuristic perspectives, it examines the evolving responsibilities of accountants and finance professionals, the implications of quantum technologies, and the multidimensional challenges posed by the era of interplanetary economies. This discussion underscores the indispensability of accounting as a framework for resource allocation, ethical governance, and socio-economic stability in the emerging age.