To mark up shipping rates:
- Log in to the admin panel of your online store.
- Click on Settings > Shipping Settings > Setup Shipping Zones.
- Click "Edit" next to the shipping zone you want to edit.
- Click the Configure button for the real-time method you want to pad.
- Look for the Pad Rates field and enter the value you want to pad. This can be a dollar amount or a % amount of the shipping rate. For example, if you have the padding set to $5.00, then all the rates returned for this service would be padded by $5.00.
- Note: This option is not available for FedEx.