Step 1 - Give Squarespace API permissions

Go to www.paypal.com and log into your PayPal Business account. Follow these steps to allow Squarespace to connect to PayPal to process your orders:

1. Click your account name in the top-right corner.
2. Click Account settings.
3. Choose Account access in the left navigation.
4. Click API Access.
5. Under Pre-build payment solution, click Grant API permission.
6. Enter paypal-payments_api1.squarespace.com
7. Click Lookup.
8. Choose all permissions, then click Add.

Step 2 - Copy your PayPal Merchant Account ID

In your PayPal account:

1. Click your account name in the top-right corner.
2. Click Account settings.
3. Click Business information.
4. Copy your PayPal Merchant ID.

Step 3 - Connect PayPal to your site

Log into your Squarespace site and follow these steps:

1. In the Home menu, click Commerce, and then click Payments.
2. Click Connect PayPal.
3. Enter your PayPal credentials. 
4. Paste the PayPal Merchant ID you copied in step 2. 
5. Click Connect.

Step 4 - Approve Squarespace Commerce transaction fees

In addition to PayPal processing fees, you may be charged Squarespace Commerce transaction fees if you’re on the Personal or Business billing plan. These fees will be charged to your PayPal account.

1. On your Squarespace site, in the Next Step window, review your plan's commerce transaction fee information, then click Agree & Continue.
2. A pop-up window will open.
3. Log into your PayPal Business account, choose a payment method for the fees, then click Agree & Continue.

After accepting the fee agreement, your PayPal connection is complete!