An IRS plaque on the wall of the IRS building.
America's Credit Unions submitted a comment letter to the Internal Revenue Service earlier this week raising concerns about the agency's proposed regulations implementing a new vehicle loan interest deduction created under the One Big Beautiful Bill Act.
While the association said it supports the goal of providing targeted tax relief to consumers, it cautioned that the current proposal could prove difficult and costly for credit unions to administer in practice. The letter argued that the rule would require significant one-time investments in loan origination, servicing and reporting systems to support a tax benefit available for only a three-year period.
According to America's Credit Unions, lenders would need to redesign systems and retrain staff to capture tax-specific data that is not part of standard auto lending processes. The group also flagged concerns about eligibility determinations that rely on borrower information credit unions often do not have, particularly for indirect auto loans and refinances from other institutions.
The letter highlighted operational risks tied to common transactions such as trade-ins with negative equity, rolled-in amounts, refinances, and determinations about original and personal use of vehicles. Without clearer standards, the association warned, similarly situated borrowers could face inconsistent outcomes.
America's Credit Unions also pointed to the short implementation timeline, saying the novelty and complexity of the reporting regime increases the risk of unintentional errors, even with transition relief.
The association urged the IRS to recalibrate the final rule by adopting clearer lines of responsibility, borrower-based determinations where appropriate and administrable safe harbors that better reflect real-world auto lending practices. Without those changes, the group said, the proposal risks confusing borrowers and imposing compliance obligations that are not feasible to implement consistently across the credit union system.
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