The document summarizes key highlights of the new simplified GST returns approved by the GST Council. It outlines features of monthly and quarterly returns such as filing due dates, nil returns, invoices, input tax credit claims, amendments, and payments. It also describes simplified "Sahaj" and "Sugam" quarterly returns for small businesses with annual turnover up to Rs. 5 Cr dealing primarily in domestic supplies. Control measures are proposed for newly registered taxpayers and defaulters regarding invoice uploading.