Add-on: Mollie payments

The Mollie Payments Add-on allows you to connect your Mollie account to Storeganise and accept credit card and SEPA direct debit payments directly from customers. Once set up, payments are automatically linked to customer invoices, and your customers can manage their payment methods directly from the Customer Portal.

Connecting your Mollie account

1. Go to Main settings > Add-ons in the Management Portal.
2. Find Mollie Payments and click Install.
3. After installation, click Enable.
4. A task will appear prompting you to authorise the connection with Mollie. Click the link.
5. Sign in to your Mollie account and select the correct organisation profile.
6. Click Connect to complete the authorisation.

Adjust Add-on settings

To ensure that payments process correctly:

• Make sure the currency in your Mollie account matches the currency code set in Storeganise (Invoicing > Invoicing > Currency code).
• Then set the currency in the Mollie Add-on custom field. This must also match your invoicing currency.
• Update this in the Add-ons > Mollie Payments > Settings > Currency code page.

• Then, check that the Profile ID of the Mollie account matches the one listed in your Mollie dashboard
• Go to:
  • Browse > Developers > API Keys > Scroll down to find the Profile ID

Accepting payments

Once Mollie is connected:

• In Mollie, go to:
  • Organization settings > Products > Payments
  • Choose which payment methods you'd like to add to your account

When Mollie has activated your payment methods:

• Customers will see the Mollie checkout page to add a payment method to their account during online booking and move-in.
• They can add a credit card or a direct debit method from the Customer Portal.
  • To use Direct Debit, customers will need to create a payment mandate using iDEAL. They will then need to follow the on-screen prompts to link their direct debit accounts to their customer profile
  • To use a credit card, customers can select a card and follow the on-screen prompts.

All payment mandates are securely stored and can be used to charge for future invoices automatically.

Payment authorisation and verification

Setting up SEPA Direct Debit with iDEAL

When a customer sets up a SEPA Direct Debit payment method, the initial verification is done using iDEAL.

• iDEAL is used only once—to securely collect the customer’s bank details and authorise a SEPA Direct Debit mandate.
• During this step, the customer completes a small payment (usually €0.01), which verifies their identity and links their bank account.
• Once this is complete, Mollie generates a SEPA mandate tied to that account.
• All future payments are processed via SEPA Direct Debit, without any further action needed from the customer.

Why is a €0.01 charge shown during payment setup?

When a customer adds a payment method—credit card or SEPA direct debit—Mollie initiates a small transaction (typically €0.01) to create a valid mandate.

• For credit cards, the €0.01 charge is triggered by the card scheme or issuing bank, not Mollie. Most card schemes and banks refund this amount immediately, though this can vary.
• For SEPA direct debit (e.g. via iDeal), a small payment is required to verify the bank account and authorise the mandate. Banks also refund this amount immediately, though this can vary.
• Once the transaction is successful, Mollie generates a mandate ID, which can be used for future payments without requiring customer approval again.

This process ensures the payment method is valid, secure, and authorised for recurring use.

Managing payments and invoices through Mollie

Charging invoices

You can charge customers directly for any unpaid invoices:

1. Go to the Customer > Billing section in the Admin Portal.
2. Select an unpaid invoice.
3. If a valid payment method exists, click Charge.

The payment status will be updated automatically once processed.

For SEPA direct debit payments, status updates may take a few business days, depending on the bank.

This process can also be done automatically. Make sure to set your Storeganise invoicing settings to "Automatic"

Updating payment methods

Customers can update their stored payment methods at any time:

• From the Customer Portal, go to Billing > Payment method.
• Select Update payment method.
• They will be redirected to a secure Mollie-hosted checkout to complete the update.

Payment statuses

You’ll see one of the following statuses on each invoice:

• Paid – Payment was successful
• Pending – Payment is processing (SEPA direct debit only)
• Failed – Payment was declined or could not be completed

Mollie will automatically update the status once the payment clears or fails.

Frequently asked questions

If you need help configuring Mollie Payments or have questions about invoice charges, contact our support team.