I believe this from the White House contains the only semi official numbers:

https://www.whitehouse.gov/fact-sheets/2025/04/fact-sheet-pr....

That has 10% across the board starting April 5th, then unspecified rates for the “worst offenders” starting April 9th.

I say “semi official” because it’s not official until US Customs and Border Patrol publishes the rates. So far I don’t think they’ve done that. Their announcements page here doesn’t have anything:

https://www.cbp.gov/newsroom/announcements