The Current Loan system in Simcountry, is based off of the Reserve Banking system in the real world.
In the real world:
When large institutions have more cash than they need, they deposit it in the Reserve Bank. Utilising what is called the "deposit facility".
When financial institutions have less cash than they need, they borrow money from the Reserve Bank.
Usually there are more borrowers, than depositors. So the Reserve bank makes up the difference by printing money, increasing the money supply.
If there is to much money in the system. The Reserve Bank raises interest rates, to encourage more institutions to use the deposit facility, and fewer to borrow money. This reduces the Money Supply. Helping to control inflation and regulate the economy.
In Simcountry:
The Reserve Bank is represented by a "World Bank" (really a Reserve Bank) controlled by the GM's. When ther