Use this calculator to compare interest rates and see how much your bank balance would be for various online savings banks.
 

There are many online banks offering high interest rates on savings accounts... much better than those of banks with local branches.  You simply open an online bank account and make transfers between the online savings account and your existing bank's checking account.

No branches means lower overhead and you get higher interest rates because of that.  Usually double what your bank's local branches are offering for savings accounts and significantly more than checking accounts.  For example, ING Direct pays 2% interest on savings accounts  with no minimums and no fees.  Washington Mutual on the other hand doesn't pay over 2% unless you have a $25,000 deposit or pay a monthly fee.  Sign up for an online savings account, and let your money earn more for you.