The Trump administration is pressing the Internal Revenue Service to alter nine-digit ITIN codes so officials can distinguish filings submitted by undocumented immigrants.
Discussions underway as of May 13, 2026 involve IRS personnel and White House aides examining how the codes might require explicit immigration status statements during applications. Three people familiar with the deliberations described the review as an effort to tighten identification without new legislation.
Current ITIN rules allow individuals without Social Security numbers to meet federal tax obligations. The proposed adjustments would embed status indicators directly into the numbering format, creating an immediate flag for enforcement agencies.
Proponents inside the administration argue the change would streamline removal operations by revealing addresses and income data already on file. They point to existing statutes that treat tax compliance as separate from immigration violations yet still permit interagency use of records.
The move follows a 2025 agreement between the IRS and Immigration and Customs Enforcement that permitted broader data exchanges. Federal courts halted that arrangement in both 2025 and 2026 after lawsuits from advocacy organizations claimed it violated taxpayer privacy protections.
Those earlier rulings limited direct transfers of ITIN holder information. Administration lawyers are now studying whether code modifications can achieve similar identification goals through the tax filing process itself rather than post-filing transfers.
Washington Post reporting from April 2026 documented a measurable drop in ITIN submissions amid fears of data sharing. Filers cited concerns that routine tax returns could trigger enforcement actions even when no criminal activity appeared on the forms.
New York Times coverage on May 13 confirmed the latest internal talks. Its Washington Bureau noted that the administration is leaning on the Internal Revenue Service to upend how undocumented immigrants can file their taxes.
Critics contend any forced disclosure would drive more workers into the cash economy and reduce federal revenue. They note that ITIN filers have contributed billions in taxes over the past decade without accessing most federal benefits.
Supporters counter that immigration enforcement must take precedence over revenue collection when statutes conflict. They emphasize that the administration remains committed to identifying removable noncitizens through every lawful channel available to federal agencies.
Implementation would require updated IRS forms and revised instructions for tax preparers. Agency staff would also need new protocols for handling applications that omit required status information.
Legal experts anticipate fresh court challenges if the changes advance. Previous blocks on data sharing rested on statutory interpretations of confidentiality rules that could apply equally to code alterations.
Advocacy groups have begun preparing responses. Organizations representing immigrant taxpayers argue the proposal would punish compliance and contradict long-standing IRS policy that encourages everyone to file returns regardless of status.
Administration officials have not set a public timeline. Internal memos reviewed by reporters indicate the review remains in early stages with technical feasibility still under assessment by IRS information technology teams.
The broader enforcement agenda includes expanded workplace audits and cooperation with state motor vehicle agencies. Tax data represents one additional vector under active consideration by senior policy staff.
GV Wire summarized the same deliberations on May 13, highlighting how the ITIN adjustments would effectively compel either status disclosure or complete disengagement from the federal tax system.
Observers note that any successful code change would create a permanent searchable marker visible to ICE officers conducting routine database queries. That visibility could accelerate targeted operations without requiring new warrants for each case.
Tax professionals warn of downstream effects on preparation services. Many firms already advise clients on risk calculations when submitting ITIN applications; further alterations would intensify those conversations.
Congressional oversight committees have requested briefings. Lawmakers from both parties seek clarification on how the proposed modifications would interact with existing statutes governing taxpayer information protection.
Revenue estimates remain preliminary. Treasury analysts have modeled scenarios showing potential short-term collection declines if significant numbers of current ITIN users cease filing altogether.
White House spokespeople declined detailed comment beyond affirming continued focus on interior enforcement priorities. They reiterated that all agencies must use available tools to uphold immigration law.
Immigrant community organizations plan public education campaigns. These efforts would inform ITIN holders of their options and potential consequences under the contemplated policy shift.
The IRS has historically maintained that tax administration operates independently of immigration status verification. Any departure from that stance would mark a significant operational pivot.
Technical implementation could take months even after policy approval. System updates would affect e-filing platforms, paper forms, and downstream data processing pipelines simultaneously.
Advocates continue to monitor related litigation. Ongoing cases concerning the blocked 2025 data agreement may establish precedents that either enable or constrain the current ITIN review.
Administration sources indicate parallel discussions at the Department of Homeland Security on how flagged ITIN data might integrate with existing enforcement databases if the code changes proceed.
