IRS Mandates W-2 Reporting for Overtime Deduction to Fix 2025 Confusion

Key points

• Employers must now report qualified overtime compensation in Box 12 of the W-2 using code 'TT' for tax year 2026.
• The deduction applies only to the 'overtime premium' (the extra 0.5x rate under the FLSA), not the full time-and-a-half pay.
• Over 29 million taxpayers claimed the deduction in 2025, with an average amount above $3,100, according to the Treasury Department.
• Taxpayers must verify the W-2 amount against pay stubs and request a corrected W-2c if errors are found.
• The deduction phases out for single filers earning over $150,000 and joint filers over $300,000.

Background

The 'no tax on overtime' provision was established in the One Big Beautiful Bill Act, signed in July 2025, and is part of a temporary package of deductions valid through 2028. This provision is one of several targeted tax breaks that have sparked political debate regarding their permanence and cost, with opponents questioning the earmark nature of the measures. Previous coverage noted that these deductions, including those for tips and auto loan interest, are central to ongoing legislative discussions about federal revenue and policy priorities.

How outlets are covering it

CNBC emphasizes the simplification of the process for workers, noting that the 2025 filing season was complicated due to the lack of employer reporting, forcing many to use pay stubs to estimate their deductions. Andrew Lautz of the Tax Foundation highlights that the new rules provide much-needed clarity on eligibility and reporting requirements. HRMorning focuses on the compliance obligations for employers, stressing that qualified overtime remains subject to withholding and that errors must be corrected via Form W-2c to avoid penalties. Both sources agree that while the deduction is valuable, the accuracy of the reported amount is critical, as workers cannot unilaterally adjust the figure on their returns if the W-2 is incorrect.

Why it matters

This update reduces the administrative burden on millions of workers who previously had to manually calculate their eligible overtime deduction. By shifting the responsibility to employers, the IRS aims to minimize errors and disputes during tax filing. However, it places a new compliance requirement on payroll departments to accurately identify and report FLSA-qualified overtime, ensuring that the tax break reaches the intended beneficiaries without triggering penalties for misreporting.

What to watch

Taxpayers should review their 2026 W-2s for the 'TT' code in Box 12 and cross-reference the amount with their pay stubs. If discrepancies are found, workers must request a corrected W-2 from their employer. Employers should ensure their payroll systems are updated to capture and report the full amount of qualified overtime, even if it exceeds the deduction cap, to avoid information-reporting penalties.