This article provides a comprehensive overview of Section 16(4) of the GST Act, highlighting key input tax credit (ITC) court judgments related to it. Section 16(4) offers a significant benefit by allowing taxpayers to avoid the cascading effect prevalent in the previous VAT regime. However, this provision comes with specific conditions that must be met, transforming the previously vested nature of ITC into a conditional right. Understanding these elements is crucial for businesses looking to navigate the complexities of GST and optimise their tax credits.