Adjusted Basis

In tax accounting, adjusted basis is the net cost of an asset after adjusting for various tax-related items.Adjusted basis is one of two variables in the formula used to compute gains and losses when determining gross income for tax purposes. The Amount Realized – Adjusted Basis tells the amount of Realized Gain (if positive) or Realized Loss (if negative).
See more at Wikipedia.org...

Price from which to calculate and derive capital gains or losses upon sale of an asset. Account actions such as any stock splits  that have occurred since the initial purchase must be accounted for.

The undepreciated amount of an asset's original basis. Used for tax purposes to calculate the gain or loss on disposition of an asset.