If you charge actual shipping charges, you can pre-authorize a higher amount than the order total initially so that you can add the actual shipping charges on afterwards without needing to create an additional authorization. This will avoid having upset customers because of double charges on their credit card statements.

To do this, go to Configurations -> Payment Methods -> click on an existing credit card payment method (or create a new one if you have not done it yet) -> input a percentage amount in the % in addition to order total to pre-authorize box -> then click on Update.

Please note that this is only applicable for Stripe and Authorize.NET at this time.

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