What is GST? GST (Goods and Services Tax) is a unified, multi-stage, destination-based tax levied on every value addition in India. It replaced many indirect taxes and brought uniformity across the country. Why GST Return Filing is Crucial Filing GST returns isn’t just a formality—it’s a legal requirement. Businesses must report their sales, purchases, taxes collected, and taxes paid. It helps the government track tax liabilities and gives businesses access to the Input Tax Credit (ITC).