>Credit cards: 16%
Well anyone who has a large "debt" on a credit card is pretty silly anyway.
Interest (at a high rate) is charged and added monthly.
If you dont pay it all off, next month you are charged interest on the interest you did not pay off last month.
The next month you are again charged interest on the interest and so on.
Terrible, terrible way to "borrow" money, and in this time of financial problems the best thing to do is pay off the credit card bill in one go, and then cut it up.