A single-rate GST workspace
Start with GST-exclusive prices, the applicable currency and your verified rate. The calculation adds one percentage to the discounted subtotal. The AUD starting currency does not establish Australian tax treatment or GST registration.
Australian invoice information
The ATO explains what tax invoices need to identify, including the seller and relevant tax details. Use the registration fields, business and customer details, and the appropriate document heading. Check the official requirements against the actual transaction.
Indian GST and other systems need different logic
This tool does not calculate CGST/SGST/IGST splits, determine place of supply, validate GSTIN registration, produce an IRN or submit e-invoices. Do not use this single-rate layout as a substitute when those features are required. A generic GST label is not a compliance check.