In an environment where start-ups are becoming increasingly integral to the economy, understanding the fiscal dynamics of investment structures and their expansion is essential. In this context, our panel will delve into the cutting-edge developments in fiscal planning related to start-up investments and their growth. We will shed light on the tax implications that stem from different investment architectures, address the challenges therein, and explore the innovative solutions that have emerged. Our exploration will include an in-depth analysis of the complex interplay between taxation policy, investment growth, and start-up expansion, with the aim of providing valuable insights for investors, entrepreneurs, and those practicing tax law.