India GST Invoicing for WHMCS
GST tax invoices from WHMCS: CGST + SGST or IGST worked out by state, GSTIN checks, SAC codes, financial-year invoice numbers and GSTR-1 exports.

Mollie for WHMCS connects your WHMCS to Mollie, one of Europe's most widely used payment providers. Your clients pay invoices the way they prefer in their own country.
iDEAL, Bancontact, cards, PayPal, Klarna, Apple Pay, SEPA bank transfer, Przelewy24, EPS, TWINT and the other methods enabled in your Mollie dashboard. The client chooses on Mollie's secure page, so no card or bank details touch your server. Offer everything, or only the methods you list.
When the client returns from Mollie, or when Mollie calls your WHMCS, the module asks Mollie for the payment and credits the invoice only for a payment this WHMCS created, and only once. The webhook is registered by the module for every payment — nothing to configure in Mollie.
Open the invoice, choose the transaction and press "Refund through Gateway" — in full or in part. No need to sign in to Mollie.
Mollie supports EUR, GBP, USD, CHF, PLN, SEK, DKK, NOK, CZK, HUF and more. For clients billed in an unsupported currency, pick a supported one under the WHMCS setting "Convert To For Processing" — the invoice is still credited in its own currency.
Upload the module, activate "Mollie" under Payment Gateways, paste one API key and save. A test key takes test payments; switch to your live key when you are ready.
You need your own Mollie account. Clients pay each invoice on the Mollie page; cards are not stored for automatic recurring charges.
| Platform | WHMCS 8.0 or newer |
|---|---|
| PHP | 7.4 – 8.3 with cURL |
| API | Mollie API v2 (payments, refunds), no bundled SDK |
| Account | Mollie account (API key) |
| Operations | payment, full and partial refund |
| Tested | payment, currency conversion and refunds run against the Mollie test environment |
| Package | gateway module, .zip |
| Licence | one WHMCS installation |
Ask about compatibility or licensing. Need it to do something it doesn't? We build custom versions for a fixed quote.
GST tax invoices from WHMCS: CGST + SGST or IGST worked out by state, GSTIN checks, SAC codes, financial-year invoice numbers and GSTR-1 exports.
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