I majored in Business Administration with a minor in bookkeeping, you can write of ANY expense used in your business. Gasoline write off, car expense, maintainance, advertsising, banking expenses, insurance, your shop rent, or if you work out of your garage, part of your rent. all your tool costs the year you buy them and you can depreciate your shop equipment so much per year. Bookeepping programs (such as quicken or quickbooks) they are part of your business and save those receipts also. Your computer if you use it for your business which then means your internet is a tax write off also. Save every receipt if you use the items for your business.
-- http://ye-olde-cabinet-shoppe.com/
