Mollie · WooCommerce

Mollie integration for WooCommerce — set up, tested, and actually working.

iDEAL, Bancontact, cards, PayPal, Apple Pay, Klarna. Configured, sandbox-tested, switched to live with you on the call.

€150 as part of a new build · from €250 to fix or add to an existing shop.

iDEAL inline, not after redirect Every path sandbox-tested No margin on Mollie's fees Fixed price, in euros

Why Mollie

Why Mollie — and why it still goes wrong.

Mollie is the default payment provider for Dutch and Belgian webshops for good reasons: iDEAL at €0.29 per transaction, Bancontact, no monthly fee, next-day payouts, and a WooCommerce plugin that is genuinely maintained.

And yet a large share of the "my webshop lost orders" emails we receive are Mollie set-ups that were never finished. The usual causes:

Webhooks blocked. Mollie tells WooCommerce that a payment succeeded via a webhook. If the host, a security plugin, Cloudflare, or a maintenance-mode plugin blocks that request, the customer pays and the order stays "pending" forever.
Test keys in production. The shop launched with the test API key. Payments "work" in the admin and no money arrives.
Order status mapping. Paid orders land in "on hold" instead of "processing", so nothing ships.
iDEAL after redirect. Bank selection happens on Mollie's hosted page instead of inline at checkout. Every extra step costs conversion, and Dutch buyers notice.
Klarna without the required data. Klarna Pay Later needs a complete address and phone; if the checkout fields are trimmed, Klarna silently disappears from the method list.
Refunds handled outside WooCommerce. Refunds done in the Mollie dashboard never update the order, and the customer gets no email.

We set it up so none of that happens, and we test each path before launch.

What's included

What the set-up includes.

Configuration

Mollie for WooCommerce plugin — installed and pinned to a tested version.
Live and test profiles — API keys stored outside the database where the host allows it.
Payment methods per country — iDEAL and Bancontact prioritised for NL and BE, cards and PayPal as fallbacks, Klarna and Apple Pay where they fit.
Method ordering and icons at checkout — iDEAL bank selection inline, not after redirect.
Bancontact app / QR flow — enabled for mobile.
Order status mapping — paid → processing, expired/cancelled → cancelled with stock restored.
Payment description template — so bank statements show your shop name and order number.

Webhooks and edge cases

Webhook endpoint verified — from Mollie's side, with the host firewall and any WAF whitelisted.
Retry handling for late webhooks — payments confirmed after the customer closed the tab.
Expiry windows — for iDEAL and bank transfer, set so stock isn't held for days.
Duplicate-payment guard — for customers who click twice.

Refunds and disputes

Full and partial refunds — from the WooCommerce order screen, synced to Mollie.
Chargeback and dispute notifications — routed to your inbox.

Testing before go-live

Nothing switches to live until every path is proven in Mollie's sandbox.

Sandbox test every method

We run a test order through every enabled method in Mollie's sandbox — successful, failed, expired and cancelled.

Confirm each outcome

For each, we confirm the order status, stock, and customer email.

Switch to live together

Then we switch to live keys together, with you on the call.

One real €1 order

We run one real €1 order.

Existing shops

Mollie on a shop you already have.

If your shop is live and something is off — pending orders, missing payment methods, a "payment failed" loop, Klarna not showing — we diagnose and fix it for a fixed price. We start by reading the Mollie logs and the WooCommerce order notes, which almost always tell the story within the hour.

Common fixes we've delivered:

Problem	Usual cause	Fix
Orders stay "pending payment"	Webhook blocked by host/WAF	Whitelist + resend missed webhooks
iDEAL missing at checkout	Method not enabled for NL, or currency not EUR	Enable per-country, correct currency
Klarna vanished	Trimmed checkout fields	Restore required fields
Customer paid twice	No duplicate guard on refresh	Add guard, refund duplicate
Bank statement says "Mollie" not your brand	Description template empty	Set template with shop name + order ID

High-risk categories

Alternatives when Mollie says no.

Mollie reviews some product categories case by case — supplements, research chemicals, CBD, adult products, vaping, and several others. If you're in one of those, tell us before the build. We plan a payment stack that goes live: bank transfer with automatic IBAN matching, a high-risk PSP, or crypto via a compliant processor. Webshops for restricted categories →

Questions

Mollie questions, answered simply.

How much does Mollie charge?

Mollie's own fees, paid by you to Mollie: iDEAL €0.29 per transaction, Bancontact around €0.39, cards a percentage plus a fixed fee. No monthly subscription. We don't add a margin to any of it.

Does Mollie work with WooCommerce Subscriptions?

Yes, for methods that support recurring payments (cards, SEPA Direct Debit after an initial iDEAL payment). We configure the first-payment-then-mandate flow that Mollie requires.

Can I use Mollie and Stripe together?

You can, but there's rarely a reason to. Mollie covers the Benelux methods; Stripe adds nothing there and complicates reconciliation.

How long does it take?

On a new build, it's part of the checkout work. On an existing shop, most set-ups or fixes are done within one working day of getting admin and Mollie dashboard access.

Do you need my Mollie login?

We need a team-member invite to your Mollie organisation, not your password. You can revoke it after handover.

Explore more

Related services.

Set up Mollie

Ready for payments that actually land?

Tell us about your shop. We set up Mollie, test every path, and switch you to live on the call — for a fixed price.

Get a fixed-price quote →