How the timing works with the annual tax reform

I read that the Finance Ministry has asked that the 2026 tax reform ("令和8（2026）年度 税制改正") include a change to tax cryptocurrency like other investment assets (a fixed rate of 20%) rather than the current system where it's miscellaneous income so the rate depends on your other income but the top rate can go up to 55%.

Could someone confirm my understanding of the timing would work around this?

• Unless they do something weird it'll do something it'll apply to any crypto sales I make starting on January 1st, 2026
• It won't affect the rate I pay on sales before that date
• The legislation to do this may not formally pass until a few months into next year, but you can usually be reasonably confident about what it will include by that point

In other words, people should try to avoid realizing crypto gains this year unless the amount is small and their other income is very low, but we should be good to start selling as soon as the clock strikes midnight for the new year.