a company bought a computer for 1500?

best answer
If you sold it after three years for $1500 and forgot to assert one 12 months’s depreciation you’d look at it as a $300 loss based on getting $1500 for an $1800 monitor ($3000 minus two years at $600). The IRS nevertheless would classify it as a $300 gain based on their calculated basis of $1200 (three yr’s worth of depreciation).