Filing Goods and Services Tax (GST) returns in India involves providing various documents and details to the tax authorities. The specific documents required may vary based on the type of GST return and the nature of your business. Here's a general list of documents that are commonly required for GST return filing

Sales and Purchase Invoices: Invoices for all sales and purchases made during the return period. These should include details such as invoice number, date, name and address of the parties, GSTIN of the parties, description of goods or services, quantity, taxable value, and applicable GST rates.

Details of Output GST: Information about the GST collected on sales (output tax). This includes the GST collected under different tax heads (CGST, SGST/UTGST, IGST) for intra-state and interstate transactions.

Details of Input GST: Information about the GST paid on purchases (input tax). This includes the GST paid under different tax heads for different types of purchases.

GST Payment Challans: Copies of payment challans for GST payments made during the return period. This includes details like Challan number, BSR code of the bank branch, and date of payment