Even back when I was waiting tables in college in the 90's most transactions were CC. You had to enter the tip amount as part of your end of shift processes to

Even back when I was waiting tables in college in the 90's most transactions were CC. You had to enter the tip amount as part of your end of shift processes to balance things out. This was recorded by the system and you then had to enter it into the companies system. Essentially everyone only ever claimed the CC tips and nothing more. Yet as more and more transactions move to CC the discrepancy between actuals and declared is MUCH smaller.