What role does the transcendental ego play in Husserl’s philosophy?

In Edmund Husserl’s phenomenology, the transcendental ego serves as the fundamental ground for the constitution of all meaning.12

To reach this level of understanding, Husserl employed the transcendental reduction, a methodological process that requires setting aside the "natural attitude"—the everyday assumption that the world exists independently of our consciousness. By "bracketing" the existence of the natural world and the empirical self (the individual with a history and physical presence), the philosopher uncovers the transcendental ego.123

This ego is identified with pure consciousness, which is not a physical substance but the source of all intentional acts, such as judgment, imagination, and perception. It functions as the "thinking subject" that constitutes objects as meaningful phenomena. Because it is the condition for all knowledge and experience, the transcendental ego is not itself an object within the world; rather, it is the sphere of immanence where the world is registered and understood. Consequently, Husserl characterized his own philosophical framework as transcendental idealism.1324