This excerpt taken from the PBI 10-K filed Mar 1, 2007.
Accounting for the Costs of Computer Software to Be Sold, Leased, or Otherwise Marketed. Software development costs are expensed as incurred until technological feasibility has been established, at which time such costs are capitalized until the product is available for general release to the public. Capitalized software development costs include purchased materials and services, payroll and payroll-related costs attributable to programmers, software engineers, quality control and field certifiers and interest costs. Capitalized software development costs are amortized over the estimated product useful life, principally 3 to 5 years, using the greater of the straight-line method or the ratio of current product revenues to total projected future revenues. Other assets on our Consolidated Balance Sheets include $14.8 million and $7.9 million of capitalized software development costs at December 31, 2006 and 2005, respectively. The Consolidated Statements of Income include the related amortization expense of $1.6 million and $1.4 million for the years ended December 31, 2006 and 2005, respectively. Total software development costs capitalized in 2006 and 2005 were $8.5 million and $9.2 million, respectively.