Settlement Addendum Raises Audit Authority Questions

The US Department of Justice’s settlement of President Donald Trump’s lawsuit over leaked tax returns has opened a legal dispute over how far the government can go in ending possible tax scrutiny of a sitting president, his family and their businesses. The case centres on an addendum that bars the Internal Revenue Service from reviewing tax filings made before 19 May 2026.

Trump and his two eldest sons sued the IRS in January for $10bn over leaks of personal and business tax returns. On Monday, the Justice Department announced that the case had been settled, with the government agreeing to create an almost $1.8bn fund for people who claim they were unfairly investigated. A day later, the department released the one-page addendum, which says the United States is “forever barred and precluded” from filing claims, conducting examinations or seeking relief linked to earlier tax filings by Trump, his family, trusts, companies or subsidiaries.

The department has described the addendum as customary and necessary to settle legal claims conclusively. It also said the protection applies only to existing audits, not future filings. However, lawmakers and legal experts have challenged that position, arguing that the agreement may conflict with federal restrictions on executive branch interference in IRS audits. Ron Wyden, the top Democrat on the Senate Finance Committee, said future administrations should treat the directive as invalid.

The legal difficulty lies in who has authority to end tax reviews. The addendum was signed by Acting Attorney General Todd Blanche, and the attorney general is a statutory exception to limits on audit-related intervention. Critics argue, however, that the settlement functions as an indirect attempt by Trump to halt scrutiny. Tax specialists also noted that the agreement was reached through a lawsuit against the IRS, rather than a tax case resolved by the agency itself.

The unresolved issue is whether a settlement can lawfully create protections so broad that they resemble immunity from past tax enforcement. That question is now sharpened by fresh litigation challenging the related fund as unconstitutional and unauthorised.