When you integrate Payments Standard with Magento Community Edition, you allow PayPal to handle all of your transactions (credit card and PayPal) on a PayPal checkout page. Your customers will be transferred to PayPal to enter their payment information rather than entering it on your site.

Note: To determine the version of Magento, log in to your Magento admin panel and scroll to the bottom of the page, where your version will be referenced in the footer.

Here's how to integrate Magento Community Edition 1.7.x-1.9.x with PayPal Payments Standard:

1. Log in to your Magento admin panel.
2. Select System > Configuration.
3. Click Payment Methods under Sales in the Configuration column.
4. Select Merchant Country then select the country where your business is located (in the Merchant Location section).
5. Click Configure next to PayPal Payments Standard (in the PayPal All-in-One Payment Solutions section).
6. Fill out the fields in the Required PayPal Settings section:

• Email Address associated with your PayPal merchant account - Enter your email address.
• Enable this Solution - Select Yes.

7. Fill out the fields in the Basic Settings - PayPal Website Payments Standard section. Click Advanced Settings if the following fields aren't displayed. (These fields are optional. You can change the value in each field by selecting from the drop-down menu.)

• Email Address associated with your PayPal merchant account - Enter your email address.
• Enable this Solution - Select Yes.
• Title - Enter a title for this payment action.
• Sort Order - Set to 0.
• Payment Action - Select Authorization or Sale.
• Payment Applicable From - All Allowed Countries is the default.
• Sandbox Mode - No is the default.
• Transfer Cart Line Items - Set to No unless using versions newer than the 1.7.02 build.
• Debug Mode - No is the default.
• Enable SSL verification - No is the default.

8. Click Save Config.

For complete information on integrating PayPal Payments Standard with your Magento shopping cart, see their instructions on Setting up Payments Standard.

Note: For Magento versions 2.1 and higher, PayPal Standard has been discontinued and PayPal Express Checkout Mark flow is made available by default.


See also:
Magento 1 End of Life Announcement
Magento 1 End of Life Partners
Getting Started with Magento Open Source 1.9.x
Magento Forums
Magento Documentation and Resources