Banks make money by investing your money and earning returns. So if you ever need a loan, the banks take other people's money, give it to you, and you pay interest as you pay it back. To incentivize people to store their money with banks, banks offer guarantees that the money will be safe, convenient and easy ways to access the money and make payments (direct deposit, ATMs, debit cards), and sometimes a paltry amount of interest.
Banking is a multi-billion dollar industry. Bank of America, Wells Fargo, and Citigroup made a combined $53.2 Billion in profits in 2017.
If you set up your estate plan right, you can be your own bank, which means you can take that portion of the bank's profits they would have earned from lending you money and keep it for yourself.
Infinite banking, also referred to as "being your own bank," is not a product, but rather a method through which you can use your whole-life insurance account to turn yourself into your own banker.
Here's how it works. First, you have to set up a whole-life insurance policy. As you put more money into the account, the cash value grows tax-free.