FAQ

Short answers to the questions Indian WHMCS owners ask most. New to the vocabulary? GSTIN is your 15-character GST registration number; IGST/CGST/SGST are the inter-state/central/state parts of GST; SAC codes classify services for tax; Purpose Codes (RBI) classify export payments; B2B/B2C distinguish clients who have a GSTIN from those who don't.

Does it set up my GST tax rules automatically?

Yes. During the setup wizard (step 3) — or later under System Setup → Tax & GST — GST Manager generates the WHMCS tax rules for you: IGST 18% for India and CGST 9% + SGST 9% for your registered state.

What's the difference between B2B and B2C?

B2B is a client who has a GSTIN; B2C is one who doesn't. GST Manager classifies your paid Indian invoices automatically for the GSTR-1 report. See Tax reports.

Can I file GSTR-1 from this?

You can produce the data you need. Addons → GST Manager → Tax Reports gives you a GSTR-1 Export (B2B/B2C Classification) CSV for paid Indian invoices over any date range, suitable for GSTR-1 filing. You still file through the GST portal.

Does it handle export invoices and FEMA?

Yes. Export-invoice compliance — FEMA declarations (India's foreign-exchange rules), export-specific numbering and formatting — is configured under System Setup → Export Settings. There's also an Export Invoices CSV report with Purpose Code and SAC per line item.

Will it change my existing invoice numbering?

GST Manager uses WHMCS's Sequential Numbering (e.g. INV-20251001) and adds separate export-invoice numbering for export clients. It doesn't rewrite invoices you've already issued — review your preferences under System Setup → Invoicing and Export Settings.

Are my invoices GST-format PDFs?

Yes — GST Manager deploys GST-formatted invoice templates carrying your GSTIN, SAC/Purpose codes and per-currency bank details. Deployment is handled in the wizard's last step and can be re-run from Global Settings → Sync Status.

What are the dashboard widgets and why April–March?

GST Manager adds three WHMCS admin-home widgets — Billing, GST Collected, and GST Compliance Health — reporting on the Indian financial year (1 April – 31 March) rather than the calendar year, because that's the period Indian GST/income reporting uses. They appear only while your license is active.

Do I need to configure SAC codes?

Defaults ship per service type, so you can start immediately. To fine-tune which SAC and Purpose Code appear on specific products, use Addons → GST Manager → Item Rules.

What happens if my license lapses?

Your invoicing, reports and installed version keep working. The client-area bank-details feature is license-gated and stops showing until a successful check; for a Lifetime license, only Update Now is blocked when Support & Updates lapses. See Licensing.

Is my data kept if I deactivate?

Yes. Deactivating preserves your database tables (config and reports data), so a deactivate/reactivate is lossless. To remove everything permanently you'd drop the mod_gst_* tables manually — see Uninstalling.

How do updates and backups work?

One-click via Global Settings → Update Status → Check for Updates → Update Now. GST Manager backs up files and the database first and auto-restores on failure. A database backup is retained and downloadable under Update Status → Database Backups — store it privately, as it includes configuration and licence details.

Can I show different bank details per currency?

Yes. Configure remittance/bank details per invoice currency under System Setup → Bank Details, so each currency's invoices show the right account.

What if my GSTIN is invalid?

The wizard's step 3 blocks on a bad GSTIN and shows it in red — enter a valid 15-character GSTIN and pick your registered state. The GST Compliance Health widget also flags malformed supplier or client GSTINs. See Troubleshooting.

Do I need an active WHMCS store selling to India?

Yes — GST applies to India, so GST Manager is built for a WHMCS store billing Indian customers. Check Requirements before installing.

Still have a question?

Browse Troubleshooting, the error reference, or email [email protected].