Using 2019 IRS forms and the information below, William is 53 and Joyce is 51. They are married. William is a manager for ABC Corporation, a firm that manufactures and distributes widgets. Joyce is a self-employed author of children’s books. The taxpayer wish to minimize their tax by deferring income and accelerating deductions when possible.

1. On July 1, Joyce purchased a computer, used exclusively for business for $2,000.
2. On June 1, Joyce sold her old computer system for $400. She had acquired the computer in 2010, for $2,000. When the taxpayers prepared their 2010 tax return they elected to expense the computer using Section 179. The computer was used exclusively in her business.

Calculate the amount of tax can be deducted.