What invoice type should I use — Local, Inter-State, or Nepal Export?

Use Local Sales when the buyer's registered address is in the same state as your business — this applies SGST + CGST. Use Inter-State Sales when the buyer is registered in a different state — this applies IGST instead. Use Nepal Export for cross-border shipments to Nepal, which follow export documentation rules rather than domestic GST. Picking the correct invoice type matters beyond the tax split — it also affects which fields (like transport GST number or VGM form for export) are relevant on that invoice.