Australia will impose a 15% tax on unrealized crypto gains over AUD 3M starting July 1, 2025.Bitcoin and crypto investors must report and pay taxes on unrealized gains, irrespective of asset sales or volatility.Critics warn that the tax on unrealized gains could deter investment and impede market growth, particularly impacting high-net-worth individuals.The new tax marks a shift in Australia's tax policy, drawing concerns about its potential effects on investment stability and overall market dynamics.