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Set up Tap Payments on your store

Tap Payments lets your store take KNET, Visa, Mastercard and Apple Pay. On Mawg3 you install the Tap Payments addon and paste two keys from your Tap account: a Publishable Key and a Secret Key. Mawg3 then sends customers to Tap to pay and confirms each payment before the order counts as paid.

Updated 5 October 2026

Before you start

You need a Tap merchant account. Tap reviews your business before it turns on live keys, so start that early.

Your keys are in your Tap dashboard at dashboard.tap.company. Keys that start with pk_test_ or sk_test_ are for testing. Keys that start with pk_live_ or sk_live_ take real payments.

How to connect Tap Payments

  1. In your Mawg3 dashboard, click Addons in the sidebar.
  2. Under Payments & Checkout, open Tap Payments and click Install. Confirm with Install Tap Payments.
  3. Click Configure.
  4. Paste your key that starts with pk_ into Publishable Key.
  5. Paste your key that starts with sk_ into Secret Key, then click Save.
  6. Click Test connection and check that it says Connected with Live.
  7. Place a small real order on your live store to confirm the full flow.

Why you need both keys

The Publishable Key turns Tap on at checkout. The Secret Key is needed for refunds and for full payment checks on the server. If you only add the Publishable Key, Test connection asks you to add a Secret Key.

Your Secret Key is stored encrypted. It is never shown to shoppers or sent to their browser.

Test before you go live

If you want a dry run, save your test keys first. Checkout then runs in Tap's sandbox and no real money moves. Test connection shows a warning so you don't forget you are in test mode.

When you are ready, replace both keys with your live keys, click Save, and run Test connection again. Mawg3 reads the mode from the key prefix, so there is no separate switch.

Fixing common Tap Payments errors

A Secret Key is stored in the Publishable Key field: you pasted the sk_ key in the wrong box. Move it to Secret Key.

Tap publishable keys start with pk_test_ or pk_live_: the value you pasted is not a publishable key. Copy it again from your Tap dashboard.

This is a Tap TEST secret key: your store is still in sandbox mode. Switch both keys to live ones.

Questions people ask

Which payment methods does Tap show my customers?

At checkout, Tap appears with KNET, Visa, Mastercard and Apple Pay badges. The customer picks the method on Tap's payment page.

Can I refund a Tap payment from Mawg3?

Yes. Open the order in Orders and click Refund. This needs your Secret Key to be saved.

Can I use Tap together with another gateway?

Yes. Choose which one shows first under Settings, then Payment Gateway, then Preferred gateway.