How does someone learn the ropes of what can be deducted? I have been told that you can deduct part of your house if it is used for the business. What is the best way to deduct for the vehicle used to tow my landscape trailer? How do you expense things that you have bought in the past and do not have receipts for? Is a CPA really necessary for someone earning less than $5000.00 per year? How much does it cost to speak to a CPA? Any help would be great.