As a business owner, you are busy making sure that all aspects of your company run well. As you go about your day, it's easy to let paperwork pile up into a cluttered mess. Once its time to spring clean, you must resist the temptation to toss it all in the trash. You need to keep some of this paperwork around to track your spending and protect your business. Here is a guide to know when to keep your receipts and when to throw them away.