Speaking of that. I like to look for loopholes / arbitrage opportunities within. Once upon a time, when cash back ran benefits were in the 6% range. I bought p

Speaking of that. I like to look for loopholes / arbitrage opportunities within. Once upon a time, when cash back ran benefits were in the 6% range. I bought prepaid visas from a retail store. And ran them through some merchant account. About $50K went in a circle every day and I kept the spread of almost 4% if I recall. I had to pull some other accounting tricks to make sure it did not accrue tax liability in the process but it was actually fairly impressive once I hit a certain volume I knew I tripped the alarm with the credit card issuer. They changed their entire card benefits in a way that was obviously related to blocking the activity I was doing.