If the credit card info box says Powered by Stripe Please see 
Stripe Processing Invoicing, Sales, and Refunds
If Not Please continue with the below article. 




Need to process a Credit Card payment in QuickBooks Online?  No worries - it's easy! 

Log into the QuickBooks Online company file that's linked to Quickbooks Payments, then choose between one of the following two options:

Process a Payment using Sales Receipt

  1. Click the Plus Sign (+) icon and choose to create a Sales Receipt.
  2. Select a customer (client) from the drop-down, then fill in all of the sale details.
  3. Select the proper card type from the Payment Method drop-down, click Enter card details, then fill in all of the card details, or click Swipe Card and follow the on-screen prompts.
  4. Check Process credit card, complete the Sales Receipt, then click Save.
  5. You'll see a confirmation screen showing you the status of the sale.

Process a Payment using Receive Payment

  1. Click the Plus Sign (+) icon and select Receive Payment.
  2. Select the proper customer (client) in the drop-down, enter the amount of the payment, select the card type in the Payment Method drop-down, and click Enter credit card details.
  3. Fill in all of the card details, or click Swipe Card and follow the on-screen prompts.
  4. Check Process credit card, check the appropriate Invoice, then click Save.
  5. You'll see a confirmation screen showing you the status of the sale.
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