Infinite Banking is a strategy, not a product. It uses a specially structured dividend-paying whole life insurance policy as a personal banking system: a place to store capital that grows on a contractually guaranteed basis, and that you can access at will without liquidating anything or asking permission.
Mechanically, you overfund a whole life policy so that as much premium as possible flows into cash value through Paid-Up Additions. That cash value becomes collateral. When you need capital, the carrier lends against it while your full balance stays inside the policy compounding. You repay on your own terms, and your borrowing capacity grows as the policy grows.
The core insight
"You are always financing something. Either you pay interest to a bank, or you give up interest you could have earned by spending your own savings. IBC eliminates both of those leaks by making you the bank."