Indian Shopify merchants live with a gap: Shopify's native tax engine collects GST percentages but does not produce a legally formatted GST tax invoice, does not split tax into CGST/SGST/IGST based on place of supply, and exports nothing you can hand to your CA for GSTR filing. The India GST Invoice & Compliance Suite closes that gap as a custom app ECOSIRE builds, installs and maintains on your store — not a generic App Store download.

We build a Shopify embedded app (Polaris UI, OAuth, App Bridge) that reads each order through the Admin GraphQL API and order-creation webhooks, determines intra-state vs inter-state supply from the seller GSTIN state code and the shipping state, and computes the correct CGST + SGST or IGST split per line item. HSN/SAC codes and per-HSN GST rates are stored in product and variant metafields, so every invoice line carries the right code and rate.

Generated GST tax invoices (B2C and B2B with buyer GSTIN) are produced as numbered PDFs following India's mandatory invoice fields, with credit notes for returns and refunds. A reporting dashboard exports GSTR-1, GSTR-3B and GSTR-9-ready spreadsheets your accountant can reconcile. Multi-GSTIN / multi-location stores are supported by mapping each Shopify location to its registration and state code.

Because it is build-to-order, we scope your invoice template, GSTIN setup, HSN catalogue and report formats during onboarding, then deploy to your store. You get a defined delivery lead time, source-controlled code, and ongoing support for Shopify API and GST format changes. Pricing is a one-time build fee of $999; hosting and any third-party services are discussed up front.