The US government will permanently drop tax claims against President Donald Trump, according to a settlement document that is part of a deal to resolve Trump's $US10 billion ($A14 billion) lawsuit against the Internal Revenue Service over the leak of his tax returns.
The sweeping document signed by acting Attorney General Todd Blanche, said the US government could not audit Trump's tax returns filed before Monday or any matters "that were raised or could have been raised".
As part of the settlement agreement, the US is "forever barred and precluded" from examining or prosecuting Trump, his sons and the Trump organisation's current tax issues, according to a one-page document posted to the Justice Department's website on Tuesday.