go to 'Reports > Payments Processed' and select the dates in the dates selector box at the top right. Just above the list of payments you have a breakdown of payments by type (cash, credit card, other) along with transaction totals (see photos). . Analytics How To get a report on payments between two dates Training Video. →
If you have connected your payment gateway, credit card payments will go through your Front Desk when you select payment type 'Credit Card' to process a payment. This is the best way to go because payment Id's from your processor will be stored along with your payments.
If you don't connect your Payment Gateway, you can still select 'Credit Card' as the payment type so that it shows up in the correct category in your reports (see above). You can also add notes, like the transaction Id, but in this case you have to type it by hand in the 'Notes' field.