These days, most businesses buy or lease computer software to use in their operations. Or perhaps your business develops computer software to use in your products or services or sells or leases software to others. In any of these situations, you should be aware of the complex rules that determine the tax treatment of the expenses of buying, leasing or developing computer software. Software you buy Some software costs are deemed to be costs of “purchased” software, meaning it’s either: Non-customized software available to the general public under a nonexclusive license, or Acquired from a contractor who is at economic risk should the software not perform. The entire cost of purchased software can be deducted in the year that it’s placed into service. The cases in which the...