Adyen WooCommerce POS — Oliver POS Integration Guide

Oliver POS doesn't have a partnership with Adyen. It supports Adyen the same way any WooCommerce store does — through Adyen's official WooCommerce plugin, opened inside Oliver's in-POS browser view at the counter. Adyen authorises against its global processing platform, WooCommerce records the order, and Oliver is the till. This guide is aimed at the enterprise end of the WooCommerce market — multi-region merchants who already process through Adyen for the online channel and want the counter on the same rails.

What Adyen is, exactly

Adyen is a Dutch-listed (Euronext: ADYEN) global payment platform serving enterprise merchants. It is the processor behind Uber, Spotify, eBay, Microsoft, McDonald's, and a long list of multinational retailers. Adyen operates as both a gateway and an acquirer, with direct connections to the major card networks across Europe, North America, Latin America, and Asia-Pacific, plus support for local methods including iDEAL (Netherlands), Bancontact (Belgium), Sofort and Klarna (Germany and DACH), Twint (Switzerland), MobilePay (Nordics), Alipay, WeChat Pay, and PIX (Brazil).

Adyen's pricing is interchange-plus by default — interchange and scheme fees passed through, with Adyen taking a fixed processing fee per transaction (typically €0.11 to €0.12 plus a small percentage for non-card methods). For a multi-region merchant, the value isn't a cheap headline rate; it's processing every region on one platform with one reconciliation report.

How Oliver POS opens Adyen at the counter

The Adyen WooCommerce POS flow inside Oliver follows the same hosted-checkout pattern as every other gateway in this series:

1. The cashier rings the sale on the Oliver register and taps Charge.
2. Oliver writes a pending WooCommerce order against the Adyen gateway.
3. Oliver opens the Adyen-hosted Drop-in or Pay by Link page in the in-POS browser view — a full-screen webview locked to that one sale.
4. The cashier rotates the tablet to the customer. The customer picks card, iDEAL, Bancontact, Sofort, Klarna, or whichever local method is enabled for the storefront's region.
5. Adyen authorises and notifies WooCommerce. The order flips to processing.
6. Oliver picks up the confirmation, closes the browser view, and prints the receipt.

Funds settle from Adyen to the merchant's settlement account on the merchant's Adyen contract terms. Oliver never sits in the funds flow.

The Adyen WooCommerce plugin — what Oliver rides on

The plugin Oliver rides on is the Adyen Payment Module for WooCommerce, maintained by Adyen and listed at wordpress.org/plugins/adyen-payment-module-for-woocommerce. It supports Adyen's Web Drop-in, Web Components, and Pay by Link, plus the full local-method catalogue, 3-D Secure 2 flows, and tokenisation through Adyen's Recurring contract.

Configuration is the same regardless of channel: install the plugin, connect to the Adyen Customer Area with the merchant account name and API key, configure the HMAC webhook, and enable Adyen under WooCommerce → Settings → Payments. Oliver auto-detects every enabled gateway in WooCommerce and surfaces Adyen on the register as a tender option. If Adyen works for the online store, Adyen at the counter works on the same credentials.

Why Adyen is a good fit (or what to know)

Adyen is rarely the right answer for a single-location store. It is often the right answer for a specific profile:

• Enterprise volume. Adyen's contracts realistically start to make sense above roughly €1M annual processing. Below that, the per-transaction fixed fee can be heavier than flat-rate competitors.
• Multi-region. If the same brand operates stores in NL, BE, DE, FR, and the US, Adyen runs all of them on one platform with one settlement file. That alone is usually why an Adyen WooCommerce POS arrangement is on the table.
• Local methods. iDEAL is around 60% of Dutch e-commerce; Bancontact is around 70% of Belgian e-commerce; Sofort and Klarna lead in DACH. Without those, a counter in Amsterdam or Brussels misses half its tourists.
• Revenue optimisation. Adyen's RevenueAccelerate and RevenueProtect tooling tunes authorisation routing and fraud at the network level — the same logic that runs for Uber runs for a small Adyen merchant.
• Adyen Terminal API is separate. Adyen also sells physical terminals (the AMS1 / e-series family). Oliver POS for Adyen uses the hosted Drop-in path described here, not the Terminal API. If a merchant needs physical Adyen terminals on the counter, that is a separate hardware track.

What this is NOT

Oliver POS is not an Adyen partner. There is no co-marketing agreement, no revenue share, and no special Adyen rates for Oliver merchants. Oliver does not charge a markup on Adyen transactions; the merchant pays Adyen directly on the rates in their Adyen contract. Adyen is the acquirer and the merchant of record for the transaction, funds settle to the merchant's settlement account on Adyen's schedule, and the Customer Area, refund tools, disputes, and reporting are all unchanged. Oliver is the POS software sitting on top.

Setup in 4 steps

1. Install the Adyen Payment Module for WooCommerce from wordpress.org/plugins/adyen-payment-module-for-woocommerce.
2. Connect to your Adyen Customer Area with the merchant account name and API key, configure the HMAC webhook, and enable the methods you want — card, iDEAL, Bancontact, Sofort, Klarna, etc. — under WooCommerce → Settings → Payments.
3. Install Oliver POS, sign in on the counter tablet, and pick the Adyen gateway from the tender list — Oliver auto-detects it from WooCommerce.
4. Run a small live test sale at the counter and confirm the order appears in WooCommerce, in the Adyen Customer Area, and on the printed receipt.

FAQ

Does Oliver POS partner with Adyen?

No. Oliver POS is not an Adyen partner. Adyen is supported because Adyen ships an official WooCommerce plugin that any WooCommerce store can install, and Oliver opens that gateway in our in-POS browser view at the counter.

Does Oliver charge a markup on Adyen?

No. Your Adyen rates are whatever Adyen quoted in your contract. You pay Adyen directly. Oliver's pricing is a flat monthly POS software fee, independent of gateway choice.

Can iDEAL, Bancontact, and Sofort run at the counter?

Yes — they show up as buttons on the Adyen-hosted page Oliver opens, the same as they do online. The customer picks their bank on the tablet and approves the transfer in their banking app. For tourist-heavy stores, that's the single biggest reason to run Adyen at the counter rather than card-only.

Can I use Adyen's physical terminals with Oliver POS?

Adyen sells physical terminals through its Terminal API as a separate product. Oliver POS for Adyen uses the hosted Drop-in path described here, not the Terminal API. Physical Adyen terminals would run as a separate hardware track.

Try Oliver POS free for 30 days at /demo/ — bring your existing WooCommerce store and your existing Adyen account.