GST Invoicing and HSN Code Setup for Indian E-Commerce Websites

Selling digital products, consulting retainers, or physical goods online in India requires automated GST compliance at the point of checkout.

1. Intra-State vs Inter-State Tax Logic

If customer shipping/billing state matches your company's registered GST state, split the tax into CGST (9%) + SGST (9%). For out-of-state orders, apply full IGST (18%).

2. B2B GSTIN Verification at Checkout

Incorporate a dynamic GSTIN input field with real-time format validation so corporate clients can claim Input Tax Credit (ITC) on their purchases.