I have applied for an Advanta Business Credit Card for my business. This way , I can keep my business expenses seperate from my personal ones. This card offers one of the best cash back rewards. It pays 5% Cash Back on gasoline, office supplies, utilities, computer equipment, cell phones and Internet services, and 1% on all other purchases.
The card categorizes all my expenses for me and I can download all the transactions to MS Money or to a spreadsheet for tax purposes.