Add-on: Mollie payments

In Beta. Contact support@storeganise.com to request access.

The Mollie Payments Add-on lets you connect your Mollie account to Storeganise so you can accept credit card, SEPA Direct Debit, and BACS Direct Debit payments directly from customers. Payments automatically link to invoices, and customers can manage their payment methods in the Customer Portal.

Prerequisites

  • A Mollie account with business verification completed
  • Storeganise invoicing currency set to EUR (for iDEAL/SEPA) or GBP (for BACS Direct Debit — UK operators only)
  • Operators using BACS will need to ask their Mollie representative to turn on BACS support in their Mollie account
  • Storeganise team has installed the Add-on for your business (contact support if it’s not yet enabled)

How to connect your Mollie account

Please note this section is for demonstration only. Currently, all Add-ons must be installed by a Storeganise team member. Contact us to install an Add-on.

If your Add-on has already been installed, you can skip to step #3.

Note: The demo below is interactive.

  1. In the Management Portal, go to Main settings > Add-ons.
  2. Find Mollie Payments and click Enable.
  3. A task appears prompting you to connect with Mollie. Click the link.
  4. Sign in to your Mollie account and select your organisation profile.
  5. Click Connect to complete the authorisation.
✅ Once connected, Storeganise will automatically detect your invoice currency. You don’t need to manually configure the currency code.

Understanding Mollie Add-on updates

When you install or update the Mollie Add-on, Storeganise automatically creates custom fields needed for payment tracking and processing.Invoice custom field: Mollie Payment IDThe Add-on automatically creates a custom field called Mollie Payment ID on all invoices. This field stores the unique payment identifier from Mollie whenever an invoice is charged, enabling you to:
  • Match invoices in Storeganise with payments in your Mollie Dashboard
  • Track and troubleshoot payment issues
  • Generate accurate financial reconciliation reports
ℹ️ Note: This custom field is created automatically during installation. If you installed the Mollie Add-on before this feature was added, you can trigger an update by toggling any Add-on setting (such as turning Test mode on and then off).

Configuring payment methods

Note: The demo below is interactive.

In your Mollie Dashboard:
  1. Go to Organisation settings > Products > Payments.
  2. Select the payment methods you want to enable.

Important: ⚠️ Currently, the Add-on supports:

  • Credit cards (listed as "Cards")
  • SEPA Direct Debit — the setup method depends on your operating country (see below)
  • BACS Direct Debit (UK operators only, GBP currency). Important - you will need to contact your Mollie representative to enable BACS on your Mollie account.

Make sure you complete all Mollie compliance checks so these options become active.

Configuring your operating country
The Mollie Add-on uses your configured country to determine how SEPA mandates are created for your customers. To set this, go to Main settings > Add-ons, open Mollie settings, and set the Country field to match your operating country using the table below.
Country codeCountryCurrencyMandate method
NLNetherlandsEURiDEAL first payment (€0.01)
GBUnited KingdomGBPBACS hosted form (£0.00)
ATAustriaEURManual IBAN entry
BEBelgiumEURManual IBAN entry
CYCyprusEURManual IBAN entry
DEGermanyEURManual IBAN entry
EEEstoniaEURManual IBAN entry
ESSpainEURManual IBAN entry
FIFinlandEURManual IBAN entry
FRFranceEURManual IBAN entry
GRGreeceEURManual IBAN entry
IEIrelandEURManual IBAN entry
ITItalyEURManual IBAN entry
LTLithuaniaEURManual IBAN entry
LULuxembourgEURManual IBAN entry
LVLatviaEURManual IBAN entry
MTMaltaEURManual IBAN entry
PTPortugalEURManual IBAN entry
SISloveniaEURManual IBAN entry
SKSlovakiaEURManual IBAN entry
Contact support@storeganise.com if your country is not listed or you need help configuring this field.

Advanced configuration (custom booking flows only)

⚠️ Warning: The following setting is for custom booking flows only and requires special integration work. Do not enable this feature without consulting Storeganise support first.
Charge full amount upfront for iDEAL
By default, when customers set up SEPA Direct Debit using iDEAL, they're charged €0.01 as a verification payment. A checkbox setting exists in the Add-on settings to charge the full invoice amount upfront during iDEAL registration instead.Important considerations:
  • Custom portals only: This feature is designed for operators using custom booking portals (not the standard Storeganise booking flow)
  • Configuration requirements: Requires specific technical integration and site configuration changes
  • Auto-charge must be disabled: The "Auto-charge invoice" site setting must be turned off for this feature to work correctly
  • Support required: Contact support@storeganise.com before enabling this feature to ensure your setup is compatible
When to use this: Only if you have a custom booking portal integration where you need to collect the full first payment immediately during the iDEAL setup process, rather than charging it later via SEPA Direct Debit.Default behavior (recommended): Keep this setting disabled. The standard €0.01 verification creates the SEPA mandate, and full invoice amounts are charged automatically via direct debit once the mandate is active.

How customers add payment methods


Credit card: Customers add their card via a secure Mollie checkout page. Mollie verifies the card with a €0.00 authorisation (not charged, immediately released).SEPA Direct Debit (Netherlands): Customers complete a one-time €0.01 iDEAL payment to authorise their bank account. This creates a SEPA mandate that allows future invoices to be charged automatically via direct debit.Note: The €0.01 iDEAL payment is a verification charge that may or may not be refunded depending on your bank or card scheme. This is standard practice for setting up SEPA mandates.SEPA Direct Debit (other Eurozone countries): Customers enter their IBAN directly into a secure form. A mandate is created immediately and the IBAN is verified on the first charge attempt (typically within 1–5 business days).BACS Direct Debit (UK only): Customers complete a Mollie-hosted form providing their sort code, account number, name, email, and residential address. A £0.00 authorisation (no charge) is used to establish the mandate.

Charging invoices

You can charge invoices manually or automatically.To charge manually:
  1. Go to Customer > Billing in the Admin Portal.
  2. Select an unpaid invoice.
  3. If the customer has a valid payment method, click Charge.
  • Credit card payments are processed instantly.
  • SEPA Direct Debit payments take 2–3 business days to clear. BACS Direct Debit payments take up to 5 business days to clear. During this time, invoices show as Pending.
To charge automatically:
  • Enable Automatic invoicing in Storeganise. Payments will run automatically using the customer’s stored mandate.

Payment reconciliation and tracking

Each invoice that's charged through Mollie automatically stores the Mollie Payment ID for reconciliation purposes. To find it, go to User > Invoices, open the invoice, and scroll to the custom fields section. The Mollie Payment ID field will contain the payment reference.Why this matters:
  • Cross-reference Storeganise invoices with payments in your Mollie Dashboard
  • Track payment status and resolve disputes
  • Generate financial reports with complete payment details
  • Audit trail for all payment transactions
The Mollie Payment ID is automatically added when an invoice is charged and appears in the invoice details.

Understanding payment statuses

  • Paid – Payment completed successfully
  • Pending – Payment is processing (SEPA or BACS Direct Debit). SEPA typically clears within 2–3 business days; BACS takes up to 5 business days.
  • Failed – Payment was declined or unsuccessful

What happens with each status:When a payment is Paid:
  • Invoice is marked as paid immediately
  • Customer can see the paid invoice in their Customer Portal
  • Mollie Payment ID is stored in the invoice for your records
When a payment is Pending:
  • Normal for SEPA and BACS Direct Debit payments. SEPA typically clears within 2–3 business days; BACS takes up to 5 business days.
  • Invoice shows as "Pending" in Storeganise
  • Customer can still complete their booking or move-in
  • Status automatically updates to "Paid" or "Failed" once payment clears (2–3 business days for SEPA; up to 5 for BACS)
When a payment Fails:
  • Invoice returns to unpaid status
  • Customer receives notification to update their payment method
  • You can retry charging once the customer adds a valid payment method

Troubleshooting

Invoices stuck in PendingThis is normal for SEPA and BACS Direct Debit payments. SEPA payments take 2–3 business days to clear; BACS payments take up to 5 business days. If you'd like a customer to complete a move-in while the invoice is pending, you can use the "Auto complete move-ins with unpaid invoice" Add-on. The invoice status will automatically update once Mollie confirms the payment.Payment methods not showing for a siteMollie Add-ons work at the site level. If a customer has multiple sites, they must add payment methods separately for each site. Payment methods from Site A won't appear when booking at Site B.Failed paymentsWhen a payment fails, the customer receives an automatic notification. Ask them to:
  1. Go to Customer Portal > Billing > Payment method
  2. Update or add a new payment method
  3. You can then retry charging the invoice manually
Finding payment details in MollieEach charged invoice includes a Mollie Payment ID in its custom fields. You can use this ID to find the corresponding payment in your Mollie Dashboard for detailed transaction information.Missing Mollie Payment ID in invoice recordsIf you installed the Mollie Add-on before the Mollie Payment ID feature was added, you may need to trigger an update. Go to Main settings > Add-ons, open Mollie Payments settings, and toggle any setting (like Test mode on/off) to trigger the custom field creation. All future charged invoices will then include the Mollie Payment ID.Country field not configured correctlyIf the Country field in your Mollie Add-on settings is blank or set to the wrong country, customers may see an unexpected payment flow or encounter errors during setup. Go to Main settings > Add-ons > Mollie Payments and confirm the Country field matches your operating country. Refer to the country code table in the Configuring your operating country section for the correct value.

Quick start (cheat sheet)

  1. Enable Mollie Add-on in Main settings > Add-ons.
  2. Connect your Mollie account via the task prompt.
  3. In Mollie Dashboard, activate Credit card and/or SEPA Direct Debit (and BACS for UK).
  4. In Storeganise, go to Main settings > Add-ons > Mollie Payments and set the Country field to your operating country.
  5. Customers add payment methods via booking, move-in, or the Customer Portal.
  6. Set invoicing to Automatic for auto-charges.

Frequently asked questions

1. Why is my invoice marked as "Pending" after using SEPA Direct Debit or BACS?

SEPA Direct Debit and BACS Direct Debit payments are not processed instantly. When a customer sets up a SEPA mandate (via iDEAL or manual IBAN entry), the invoice will be marked as "Pending" until the payment clears — typically 2–3 business days. BACS Direct Debit payments take up to 5 business days to clear. The invoice status will automatically update to "Paid" or "Failed" once Mollie confirms the result.

2. Can a customer complete their booking if their invoice is pending payment?

Yes. When using SEPA or BACS Direct Debit, customers can complete their booking or move-in while the invoice shows as "Pending". The unit will be reserved, and the invoice will automatically update to "Paid" or "Failed" once the payment clears.

3. What if a customer updates their payment method after an invoice is already generated?

Any future charges — including outstanding pending invoices — will use the updated payment method. Mollie always uses the most recent valid mandate when processing payments.

4. Will customers see their full IBAN or card number in Storeganise?

No. For security and privacy, customers only see partial details. Credit cards show the card type and last 4 digits (e.g., "Mastercard ending in 1234"). SEPA Direct Debit shows the IBAN with only the last 4 digits visible (e.g., "IBAN ****3567"). BACS Direct Debit displays "UK Bank Account" as account details are not exposed by Mollie. This complies with European data protection requirements.

5. What does "Mollie (Credit card)" mean on an invoice?

This indicates the payment was processed using Mollie, and the method used was a credit card. You'll also see "Mollie (Direct debit)" for SEPA payments and "Mollie (BACS Direct Debit)" for UK bank account payments.

6. Why do I see a Mollie Payment ID in my invoice records?

Every invoice charged through Mollie automatically stores the Mollie Payment ID in the invoice custom fields. This helps you match Storeganise invoices with transactions in your Mollie Dashboard, resolve payment disputes, and generate accurate financial reports. This tracking happens automatically — you don't need to configure anything.

7. Why can't my customer see their payment method when booking at a different site?

Mollie Add-ons work at the site level. Customers must add payment methods separately for each site. Payment methods added for Site A won't appear when the customer books at Site B. This ensures proper financial separation between different storage facilities.

8. What is the "Charge full amount upfront for iDEAL" setting?

This advanced setting is only for operators with custom booking portal integrations. It allows charging the full invoice amount during iDEAL setup instead of the standard €0.01 verification. This feature requires special configuration and should only be enabled after consulting with Storeganise support. Most operators should leave this disabled and use the standard SEPA Direct Debit flow.

9. How do BACS chargebacks work?

BACS Direct Debit chargebacks are governed by the BACS Direct Debit Guarantee. Unlike credit card disputes, BACS chargeback decisions are conclusive — they cannot be contested by the operator. If a customer successfully disputes a payment, the funds are returned to them automatically. If an agreement is reached with the customer to repay, they must initiate a new payment. You'll receive an email notification from Mollie when a chargeback occurs.

10. Are payment forms shown in my customer's language?

Yes. Payment forms are displayed in the language set on the customer's account profile. If their language isn't available, the form falls back to English. This applies to all field labels, button text, help text, error messages, and SEPA legal text.

If you need help configuring Mollie Payments or have questions about invoice charges, contact our support team.
Jump to
Related articles
Using Stripe with Storeganise
Add-on: Finverse Payments