No matter which type of IRA you have, there are annual contribution limits that are always imposed. From 2010 and beyond those limits will rise by $500 a year in order to try and balance against inflation.

There are quite a few advantages to investing the maximum amount into your Roth IRA, as there is a use it or lose it policy within it. If your maximum contribution is $5000 annually, you cannot invest $3,000 in 2010 and then $7,000 in 2011.

If you want to be in good shape down the road, find out your maximum investment allowed and use it to your advantage.