GST return filing procedure is an important task for all businesses registered under GST in India. The process starts with collecting all your sales and purchase invoices for the period. Then, log in to the GST portal using your GSTIN and password. Choose the right return form (GSTR-1, GSTR-3B, etc.) based on your business type. Enter the details of your outward and inward supplies, pay any tax due using online payment or challan, and finally submit the return. File it using a Digital Signature Certificate (DSC) or EVC. Timely filing helps avoid penalties and keeps your business GST-compliant.