Say I deposit $100 in a bank. The bank has $100. Now, say the law requires a 10% reserve. They can lend $90--which they actually have. That person takes the loan, and deposits it in their bank. Now, there are $190 in deposits from the original $100. But the bank never lent money it didn't have. Instead, the money creation comes from the fact I get to treat my $100 deposit as good as cash on hand, even though 90% of it has been lent to another person.
Say I deposit $100 in a bank. The bank has $100. Now, say the law requires a 10% reserve. They can lend $90--which they actually have. That person takes the loan, and deposits it in their bank. Now, there are $190 in deposits from the original $100. But the bank never lent money it didn't have. Instead, the money creation comes from the fact I get to treat my $100 deposit as good as cash on hand, even though 90% of it has been lent to another person.