How to get MS Excel Budge to record ACTUAL dollar and cents?

I'm working on a "Family Budget" sheet in Microsoft Excel. In one of the fields for the bill, it's asking me to enter a "projected" cost and then the next field is the "actual cost". I put the same amount in each field because I know that's the exact amount due...the amount is $530.08 However, when I enter 530.08, and press enter or tab, it changes what I entered to read $530. It will not keep the actual, total amount I enter, it's rounding down to the nearest dollar (removing the "cents" due). How do I change this to where it keeps the EXACT dollar amount that I enter in each field of a bill due? Thanks in Advance for your help.