WHMCS Tax and GST Configuration Guide

Proper tax configuration is essential for compliance. WHMCS supports complex tax scenarios including GST, VAT, and multi-jurisdiction sales tax.

Tax Configuration Basics

Navigate to Setup → Payments → Tax Rules to configure taxes.

Key Settings

• Tax Type: Inclusive (built into price) or Exclusive (added on top)
• Tax Level: Apply to all products or specific ones
• State: State/province-specific tax rates
• Country: Country-specific tax rules

Setting Up GST (India)

1. Go to Setup → Payments → Tax Rules
2. Add new tax rule: Name "GST", Rate 18%
3. Set Country to India
4. Apply to all states or specific ones
5. Add your GSTIN in General Settings

Setting Up VAT (EU)

1. Create tax rules for each EU country with respective VAT rates
2. Enable EU VAT validation in General Settings
3. Set up reverse charge for B2B transactions
4. Configure tax-exempt status for valid VAT numbers

US Sales Tax

US tax is complex due to state-by-state rules:

• Create separate tax rules for each state where you have nexus
• Consider tax automation services like TaxJar or Avalara
• Digital goods may have different rules than physical products

Tax Exempt Clients

For B2B or tax-exempt customers:

1. Go to client profile
2. Check "Tax Exempt"
3. Store their tax ID in custom fields

Invoice Display

Tax appears on invoices automatically. Customize the display in:

• Invoice templates for visual layout
• PDF settings for generated documents
• Email templates for sent invoices

Tax Reports

Generate tax reports in Reports → Billing → Income by Tax Level. Use for quarterly or annual tax filings.

Best Practices

• Consult an accountant for compliance advice
• Keep tax rules updated when rates change
• Test tax calculations before going live
• Document your tax configuration for audits