AI Tax Integrity Act of 2026This bill requires the Internal Revenue Service to establish a pilot program to use artificial intelligence to identify inaccurate federal tax returns. Upon completion of the pilot program, the Government Accountability Office must submit a report to Congress describing theaggregate amount of improper tax refunds or reduced tax liability attributable to fraud detected by the pilot program,aggregate amount recovered as a result of the pilot program, andaccuracy of the artificial intelligence tools used in the pilot program in identifying fraudulent federal tax returns.