Box 12 Code DD is required only for employers that filed 250 or more W-2 forms for the prior calendar year. Employers below that threshold can leave it blank. For employees, the amount is informational: it shows the total cost of your employer-sponsored health coverage and does not add to your taxable wages or change what you owe.
Which Employers Have to Report Code DD
The trigger is a simple count. If you filed 250 or more W-2s for the preceding calendar year, every W-2 you issue for the current year must include Code DD in Box 12. File fewer than 250 and reporting is optional, though nothing stops you from doing it voluntarily.
The 250-form count is not aggregated across related employers. A parent company and its subsidiary each count their own W-2s. If your headcount is bouncing near the line, count carefully each year, because crossing 250 in one year turns on the requirement for the next year’s forms.
Multi-employer plans, the kind usually set up under a collective bargaining agreement, sit in the optional bucket. Employers contributing to one are not required to report the coverage cost under Code DD, but they may.
What the Code DD Amount Actually Shows
The dollar figure next to Code DD is the combined annual cost of your employer-sponsored health coverage. It includes both the employer’s share and your share, whether you paid through pre-tax payroll deductions or after-tax contributions. It is the full sticker price of the plan, not just the piece the employer covered.
The number reflects major medical coverage, including any built-in prescription drug benefit. Dental or vision coverage gets folded in when it is bundled into the major medical plan rather than offered as a separate election. Employer Health Reimbursement Arrangement contributions count too.
Does Code DD Affect Your Taxes?
No. Do not add the Code DD amount to the wages in Box 1 when you prepare your return. Employer-provided health coverage stays excluded from gross income under longstanding tax rules, and the Affordable Care Act reporting requirement that created Code DD did not change that. Premiums you pay through a Section 125 cafeteria plan on a pre-tax basis stay excluded as well.
The line exists so you can see what your health benefits are worth in one place. It is useful when comparing job offers or checking whether marketplace coverage would cost less, but it plays no role in Form 1040 math. A high number usually just means comprehensive coverage is expensive. For most employees, the correct action is none.
What Belongs in the Code DD Total and What Doesn’t
The IRS draws sharp lines between what must be reported, what must stay out, and a narrow gray zone.
Reportable:
- Major medical coverage, with any integrated prescription drug benefit.
- Employer contributions to a Health Reimbursement Arrangement.
- Hospital indemnity or specified illness coverage when the employer pays the premium or the employee pays by pre-tax salary reduction.
- The excess value of a health Flexible Spending Arrangement when the FSA value for the plan year exceeds the employee’s salary reduction for all qualified benefits.
Not reportable:
- Standalone dental or vision plans the employee can decline separately.
- Health FSAs funded solely by employee salary reduction.
- HSA and Archer MSA contributions from either the employer or the employee.
- Hospital indemnity or specified illness coverage paid with after-tax dollars.
- Long-term care, workers’ compensation, accident or disability income, and automobile medical payment insurance.
- Government plans covering primarily military members and their families.
- Self-funded plans not subject to federal COBRA.
Three categories sit in between. Employee Assistance Programs, on-site medical clinics, and wellness programs that provide health coverage must be reported if the employer charges a COBRA premium for that coverage. If no COBRA premium is charged, reporting is optional.
Fixing a Missing or Wrong Code DD Entry
If you find a Code DD amount is missing or wrong, file a corrected Form W-2c with the Social Security Administration and give the employee a copy as soon as possible. There is no fixed deadline beyond “as soon as possible,” but penalties climb the longer an error sits.
To correct a Box 12 error on the W-2c, enter both the code (DD) and the amount previously reported, then enter the correct code and amount. If the original W-2 had to be filed electronically, the W-2c must also be filed electronically.
Two safe harbors can take penalties off the table. Under the de minimis safe harbor, if you filed the original W-2 on time, file the correction by August 1, and the number of incorrect returns is no more than the greater of 10 returns or one-half of one percent of your total returns filed, the penalty does not apply to those returns. A separate safe harbor covers small dollar errors: if no single incorrect amount differs from the correct amount by more than $100, and no withheld-tax amount differs by more than $25, you generally do not need to issue a corrected form to avoid penalties.
Penalties for Skipping Code DD
Omitting a required Code DD entry or reporting the wrong figure counts as filing an incorrect information return. Penalties under Internal Revenue Code Section 6721 are tiered by how quickly you correct the problem and scaled by business size.
For returns due in 2026, the per-return penalties for large businesses (gross receipts above $5 million) are:
- Corrected within 30 days of the due date: $60 per return, up to a $683,000 maximum.
- Corrected after 30 days but by August 1: $130 per return, up to $2,049,000.
- Corrected after August 1 or not corrected at all: $340 per return, up to $4,098,500.
- Intentional disregard: $680 per return with no cap.
Small businesses (gross receipts of $5 million or less) face the same per-return rates but lower caps: $239,000 for the first tier, $683,000 for the second, and $1,366,000 for the third.
The intentional disregard penalty has no maximum for any employer. It can also be calculated as 10 percent of the total amount that should have been reported, if that figure exceeds $680. An employer that simply forgot to populate Code DD and fixes it promptly faces far less exposure than one that ignores the requirement outright.