---
url: /gst-manager-whmcs/faq.md
description: >-
  Answers to common GST Manager questions — tax rules, B2B vs B2C, GSTR-1
  filing, export/FEMA invoices, invoice numbering, GST PDFs, dashboard widgets,
  SAC codes, license lapses, data retention, updates, per-currency bank details,
  and invalid GSTINs.
---

# FAQ

Quick answers to frequently asked questions about GST Manager for WHMCS.

::: info Terminology

* **GSTIN:** 15-character Goods and Services Tax Identification Number.
* **IGST / CGST / SGST:** Inter-state / central / state components of Indian GST.
* **SAC Codes:** Service Accounting Codes classifying services for tax.
* **Purpose Codes:** RBI codes classifying international export payments.
* **B2B vs B2C:** Business-to-Business (client has GSTIN) vs Business-to-Consumer (unregistered).
  :::

## Does it set up my GST tax rules automatically?

Yes. GST Manager creates the required WHMCS tax rules automatically during setup or under **System Setup → Tax & GST**:

* **IGST 18%:** Inter-state transactions across India.
* **CGST 9% + SGST 9%:** Intra-state transactions within your registered state.

## What's the difference between B2B and B2C?

* **B2B (Business-to-Business):** Clients who supply a registered **GSTIN**.
* **B2C (Business-to-Consumer):** Unregistered clients without a GSTIN.
* GST Manager automatically classifies paid Indian invoices for GSTR-1 filing. See [Tax reports](/gst-manager-whmcs/features/tax-reports).

## Can I file GSTR-1 from this?

Yes, by generating statutory export CSV files:

* Go to **Addons → GST Manager → Tax Reports**.
* Download the **GSTR-1 Export (B2B/B2C Classification)** CSV for any date range.
* Upload or transcribe the classified data directly into the official GST portal.

## Does it handle export invoices and FEMA?

Yes. Export compliance features are fully integrated:

* **FEMA declarations:** Configurable under **System Setup → Export Settings**.
* **Dedicated numbering:** Independent sequential numbering series for export invoices.
* **Export reporting:** Dedicated Export Invoices CSV detailing Purpose Codes and SAC per line item.

## Will it change my existing invoice numbering?

No. GST Manager preserves existing WHMCS numbering while offering dedicated series:

* **Domestic numbering:** Uses standard WHMCS sequential numbering (e.g. `INV-20251001`).
* **Export series:** Optional separate sequential series for international clients.
* Existing historical invoices remain untouched. Configure under **System Setup → Invoicing**.

## Are my invoices GST-format PDFs?

Yes. GST Manager deploys custom templates containing:

* Registered **GSTIN** and company identification footer (PAN, CIN/LLPIN).
* Line-item SAC and Purpose Codes.
* Multi-currency bank and remittance instructions.
* Deploy templates during setup or re-sync via **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**.

* **Financial Year tracking:** Reports across the statutory Indian financial year (**1 April – 31 March**).
* **License requirement:** Widgets display while an active license is verified.

## Do I need to configure SAC codes?

Default SAC codes ship pre-configured for standard hosting and domain services:

* Standard service defaults apply automatically.
* Custom product overrides can be mapped under **Addons → GST Manager → Item Rules**.

## What happens if my license lapses?

* **Invoicing & tax rules:** Invoicing calculations, PDF generation, and tax reports continue functioning normally.
* **Client-area bank details:** License-gated bank details block hides on client invoices until renewed.
* **Lifetime licenses:** Lapsed Support & Updates only restricts access to new module updates. See [Licensing](/gst-manager-whmcs/licensing).

## Is my data kept if I deactivate?

Yes. Deactivation preserves module database tables and historical records:

* Reactivating the module restores all settings losslessly.
* To purge data permanently, drop the `mod_gst_*` database tables manually. See [Uninstalling](/gst-manager-whmcs/uninstalling).

## How do updates and backups work?

* **One-click updates:** Run via **Global Settings → Update Status → Check for Updates → Update Now**.
* **Automated backups:** Creates a pre-update file and database snapshot, with automatic rollback on error.
* **Retained database dumps:** Download SQL backups from **Update Status → Database Backups**.

## Can I show different bank details per currency?

Yes. Configure currency-specific remittance details under **System Setup → Bank Details**:

* Invoices in INR show domestic bank and IFSC information.
* Overseas currency invoices (e.g. USD, EUR) display international SWIFT/IBAN instructions.

## What if my GSTIN is invalid?

* **Setup validation:** Wizard Step 3 validates format and blocks invalid entries in red.
* **Compliance health:** The **GST Compliance Health** widget flags malformed supplier or client GSTINs. See [Troubleshooting](/gst-manager-whmcs/troubleshooting).

## Do I need an active WHMCS store selling to India?

Yes. GST regulations apply to Indian sales. GST Manager is built specifically for billing Indian clients and overseas exports. Review [Requirements](/gst-manager-whmcs/requirements) before installation.

## Still have a question?

Browse [Troubleshooting](/gst-manager-whmcs/troubleshooting), the [error reference](/gst-manager-whmcs/errors), or email `support@relyweb.co`.