Definition ∞ Tax authority exchange refers to the process where national tax administrations share financial information with each other to combat tax evasion and ensure compliance. In the digital asset realm, this involves the automatic exchange of data on crypto-asset holdings and transactions between countries. This mechanism is crucial for enforcing tax laws across international borders.
Context ∞ International initiatives like CARF and DAC8 are driving a significant expansion of tax authority exchange to cover digital assets. The operational challenges include standardizing data formats, ensuring data security, and coordinating reporting timelines among diverse jurisdictions. Effective cross-border data sharing is vital for global tax transparency.