Early withdrawal penalty
Basically, there will usually be a loss of interest if you take money out of an account before a given agreed time, or perhaps if you make too many withdrawals.
One example would be an account that pays say a 2% bonus of interest if you only make one withdrawal from it in the course of the year: therefore if you take out more than one you will forfeit that bonus.
Related Articles
Accrual RateTurnover
Credit Limit
Yield
Write off