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August 11, 2026

How to Connect Afterpay

Offer interest-free installments with Afterpay.

What you'll need

An Afterpay merchant account and API credentials from the Afterpay developer portal.

Step 1 — Get your merchant credentials

Log in to the Afterpay merchant portal and open the developer section. Your Merchant ID and Secret Key are listed there.

Step 2 — Connect in SellDesk

  1. Open Settings → Payments.
  2. Expand the Afterpay card.
  3. Paste your Merchant ID and Secret Key.
  4. Save changes and toggle Afterpay on.

Tip

Afterpay approves live processing after a review. Sandbox credentials work during approval.