A capital improvement increases the value of your property-adds to your assets, and is considered a "permanent" part of the operation. (Example:We installed fixed work stations and a wall in a work area/lounge. The fixed desk-attached to the wall, and the attached bins were applicable to a capital expense, but it had to be reworked because the conference table/chairs/ and file cabinet were temporary structures and not an improvement in the function of the facility.) Another example. You can but enough change parts to build yourself a forklift, but you cannot get parts in as a capital expense-they are routine maintenance. Purchase a forklift for the same amount of money and there is no way to buy it without an approved capital expense, depreciation tables, tags, etc. There is a minimum spending level requirement, and usually a company definition of what falls under the definition. Software, printers, computer accessories at one time could be capitalized, but now cannot at our company. Usually there is a depreciation time associated with a capital expense.
I hope this helps.