Japan's National Tax Agency Officially Launches New "KSK2" System, AI Strengthens Cryptocurrency Declaration Verification

TechFlow: On September 29, CoinPost reported that Japan's National Tax Agency officially launched "KSK2" on September 24, marking the first upgrade to its next-generation core system in approximately 25 years. Centered on individual numbers (My Number) and corporate registration numbers, the new system unifies the management of personal and corporate data and introduces AI technology to enhance the detection of non-compliant tax filings.

Cryptocurrency traders and investors are particularly impacted—annual trading reports filed by exchanges, bank account deposit and withdrawal records, and Cross-Border Automatic Exchange of Financial Account Information (CRS) data have all been integrated into AI's priority analysis scope. Additionally, social media posts containing phrases like "cryptocurrency profits" will be cross-referenced with declared information, markedly raising the risk of tax audits.

The agency has also integrated horizontal data across corporate and individual sectors, making it easier to identify discrepancies between assets and income for investors who purchase cryptocurrencies through private company investments or with gifted or inherited funds. Industry professionals note that properly retaining annual trading reports and submitting accurate and complete declarations has become an urgent priority.