Charm - Version 1.2 Charm estimating software provides an easy and inexpensive way for businesses to prepare estimates and bids. Charm separates costs into labor, materials, equipment, and subcontracts. The margin on each type of cost can be set indepently, and the tax rate can be set to the rate in your locale. The items in each type of cost and the categories into which they are organized are readily customizable by the end user. The default databases are for construction. Included in the package is a context sensitive help file and zip files which contain example databases for printing, catering, and programming.