Produce your GSTR-1 data

GSTR-1 is the monthly (or quarterly) return where you report your outward supplies — the sales you made. GST Manager turns your WHMCS invoices into a GSTR-1 CSV you can use at filing time, so you don't have to reconcile invoices by hand.

B2B vs B2C

B2B ("business to business") means a client who has a GSTIN — their invoices are reported individually. B2C ("business to consumer") means a client without a GSTIN. GST Manager classifies each invoice automatically based on whether the client has a GSTIN on file.

1. Open Tax Reports

Go to Addons → GST Manager → Tax Reports. The first report is GSTR-1 Export (B2B / B2C Classification).

Addons → GST Manager → Tax Reports

2. Pick your date range

Choose the start and end dates for the return period you're filing (for example, a single month). The report includes only paid invoices dated within that range.

3. Download the GSTR-1 CSV

Click Download GSTR-1 CSV. The file contains the paid invoices for your Indian clients, each row tagged as B2B (client has a GSTIN) or B2C (no GSTIN), ready to feed into your GSTR-1 filing.

What's included

This report covers paid invoices for Indian clients only. Sales to non-Indian (export) clients are handled separately — see Handle export invoices. If you want a single combined file of all paid invoices (domestic and export), use the Legacy GST Report on the same Tax Reports screen.

Check the split before you file

Because B2B/B2C depends on the client's GSTIN, make sure your business clients have their GSTIN recorded. The GST Compliance Health widget on your dashboard flags malformed client GSTINs so a client isn't mis-classified as B2C.

Related pages

• Tax reports — GSTR-1, export and legacy CSVs
• Set up GST correctly — GSTIN and tax rules
• GST Manager overview