Adjusted Cost Base

Adjusted Cost Base is the net cost of an asset for tax purposes, used to calculate capital gains or losses when that asset is sold. In the context of cryptocurrency, it includes the original purchase price plus any transaction fees, brokerage commissions, or other costs incurred to acquire the asset.

It may also be adjusted for subsequent events, such as additional purchases of the same asset or certain corporate actions in traditional finance. When you sell or dispose of your crypto assets, you subtract the Adjusted Cost Base from the proceeds of the sale to determine your taxable gain or loss.

Maintaining an accurate Adjusted Cost Base is essential for compliance with tax authorities, especially when trading across multiple exchanges. Because digital assets are often purchased in smaller increments at different price points, investors typically use an average cost method to determine the basis for each unit held.

Failure to track these costs correctly can lead to inaccurate tax reporting and potential audits.