Settings reference

This is the full reference for every GST Manager setting. There are two areas: System Setup (how your invoices are built) under Addons → GST Manager → System Setup, and Global Settings (module operations) under Addons → GST Manager → Global Settings. For the task-oriented walkthrough of setting these up, see Configuration.

Quick vocabulary

GSTIN is your 15-character GST registration number. IGST / CGST / SGST are the inter-state / central / state components of GST. SAC codes classify services for tax; Purpose Codes (RBI) classify export payments; FEMA governs export remittances.

System Setup

Invoicing

"Invoicing Configuration" controls how invoice numbers and proforma invoices behave.

Field	What it does	Default
Proforma Invoicing	Issues proforma invoices until paid — required for GST-correct sequencing	Enabled
Sequential Numbering	Gives every invoice a continuous number, e.g. INV-20251001	Enabled

Why these matter

GST expects gap-free, sequential invoice numbers. Enabling both keeps your numbering compliant without manual tracking.

Tax & GST

"Tax & GST Configuration" is where your GSTIN and the GST tax rules are set. From your GSTIN and registered state, GST Manager generates the rules automatically.

Field	What it does	Default
Tax Type	The GST tax model applied to invoices	GST
GSTIN	Your 15-character GST registration number (validated)	(none — you must enter it)
Registered state	The state your GSTIN belongs to; decides CGST/SGST split	(none — you must select it)
Generated: IGST	18% rule for inter-state supplies (country = India)	18%
Generated: CGST	9% rule for supplies within your registered state	9%
Generated: SGST	9% rule for supplies within your registered state	9%

GSTIN is mandatory

GST Manager will not calculate tax correctly without a valid 15-character GSTIN and a registered state. This is the one setting you cannot skip.

SAC & Purpose Codes

Set the default SAC code (services tax classification) and RBI Purpose code (export payment classification) applied per service type. Four service types are covered out of the box:

Service type	Carries
Hosting (Shared/VPS)	Default SAC + Purpose code for hosting services
Product Upgrades	Default SAC + Purpose code for upgrades
Domains	Default SAC + Purpose code for domain services
Addons	Default SAC + Purpose code for add-on products

Need a different code for a specific product? Create a per-item mapping under Item Rules.

Footer & Identity

The identity details printed in your invoice footer. Sample placeholders ship here — replace them before going live, or they print on real invoices.

Field	What it does	Default
Phone	Contact phone shown in the footer	+91-1234567890 (placeholder)
Email	Contact email shown in the footer	(sample placeholder)
PAN	Your Permanent Account Number	ABCDE1234F (placeholder)
CIN / LLPIN	Company or LLP identification number	(sample placeholder)

Replace the placeholders

Skipping this section leaves the sample placeholders on real customer invoices. Always set your own values.

Bank Details

Remittance and bank details for invoices, configurable per invoice currency — so you can show different account details for INR versus a foreign currency. Add an entry per currency you invoice in; each holds the bank name, account number, IFSC/SWIFT and any remittance instructions your customers need.

License-gated on the client area

The bank details shown on the client-area invoice view require an active license. The check runs locally, so a brief licensing-server outage won't switch it off; if the license is genuinely inactive, the bank details simply stop showing until a successful check.

Export Settings

Export-invoice compliance for non-Indian (export) customers.

Field	What it does	Default
FEMA declarations	The FEMA/export declarations printed on export invoices	(sample text)
Export numbering	Export-specific sequential invoice numbering	Enabled
Export formatting	Formatting applied to export invoices	Standard

Addons → GST Manager → System Setup

Global Settings

Sync Status

Controls how the GST invoice templates are deployed into your WHMCS themes. GST Manager overrides invoicepdf.tpl and invoicepdffooter.tpl; this panel keeps them in sync.

Field / control	What it does	Default
Auto-Sync	Auto-deploys templates to themes when a mismatch is detected on admin page load	Enabled

The Theme Sync Status table shows the state of each theme:

Column	Shows
Theme	The WHMCS theme name
Status	Whether the theme's templates are in sync
invoicepdf.tpl	Sync state of the invoice body template
invoicepdffooter.tpl	Sync state of the invoice footer template
Actions	A per-theme Sync action

A Sync All button syncs every theme at once. This panel also shows the File Integrity status and sync history.

Addons → GST Manager → Global Settings → Sync Status

Update Status

One-click updates with automatic backups.

Control	What it does
Current Installation	The installed version
Check for Updates	Checks for a newer release (also checked automatically once a day)
Update Now	Downloads, backs up first, applies, then reloads
Database Backups	List of retained database backups with Download

See Updating for the full update and backup behaviour.

License Information

Field	What it does
License key	Enter and manage your license key
License type	Shows the detected type (Leased or Lifetime)
Support & Updates	For Lifetime licenses, whether the entitlement is active and until when

See Licensing for how the two license types behave.

Setup Wizard

Resume or restart the guided setup at any time. It shows what's already configured and offers:

Control	What it does
Continue Setup	Reopens at the first outstanding step, keeping everything already done
Start Over From Step 1	Walks through all steps from the beginning

Neither option resets your settings — every field is pre-filled from your current configuration.

Related pages

• Configuration — the setup walkthrough
• File Integrity — HMAC-SHA256 verification
• Updating — updates and backups
• Licensing — license types and entitlements
• Back to the overview