Box 14 on your W-2 shows other income and deductions not reported elsewhere on the form. It can include amounts like non-standard tax withholdings, voluntary deductions, employer account contributions, or corrections, and it may affect your taxes depending on what is listed. This guide explains typical Box 14 entries, how to verify them, how they flow to other parts of your return, and how to report them correctly so your taxes remain accurate and compliant.
Common Entries Seen in Box 14
Employers use Box 14 to report items that do not have a dedicated line on the W-2. While entries vary by plan and payroll setup, several items appear frequently. These include after-tax or Roth 401(k) contributions, workplace giving or charity deductions, union dues, amounts received under a nonqualified deferred compensation plan, or corrections such as adjustments for earlier overwithholding. Some employers also report state or local taxes withheld when they are not shown in Boxes 2, 3, or 16. There may also be employer contributions to a Section 125 cafeteria plan or other fringe benefits that are not included in taxable wages. Below is a comparison of typical Box 14 entries and what they generally mean for your taxes.
Typical Box 14 Entries and What They Represent
| Box 14 Code or Description | What It Usually Means | Tax or Reporting Impact |
|---|---|---|
| Roth 401(k) or after-tax contributions | Employee contributions made on a Roth or after-tax basis | Not taxed now; grows tax-free and taxed on withdrawal if rules are met |
| State or local income tax withheld (nonstandard) | State or city taxes withheld when not reported in Boxes 2, 3, or 16 | May be deductible if you itemize; affects state return |
| Union dues | Dues deducted from your paycheck | Not included in taxable wages; generally not deductible unless self-employed |
| Nonqualified deferred comp | Deferred amounts or plan corrections | Taxed when constructively received under plan terms |
| Section 125 or cafeteria plan deductions | Pre-tax health or dependent care premiums | Excluded from taxable wages; used on your tax return for coverage |
| Corrective withholdings or adjustments | Pasty year corrections or catch-up withholdings | Already reported on prior returns or may change refund due |
How Box 14 Affects Your Taxes
Whether a Box 14 item changes your taxes depends on the type of entry. After-tax contributions to a retirement plan do not reduce your current-year taxable income, but they lower plan earnings that will be taxed later when distributed. Roth plan amounts are generally tax-free in retirement if rules are met. State or local taxes withheld in Box 14 may be deductible on your state return if you itemize. Union dues usually do not create a current tax deduction for employees. Corrective withholdings might result in a refund or additional tax depending on the year and amount. Section 125 pre-tax deductions reduce taxable wages and can lower both income and payroll taxes, but you will still need to report and use these amounts on your return where required.
How to Verify Your Box 14 Entries
Before you use Box 14 amounts on your tax return, confirm what each line represents. Compare your W-2 to payroll stubs and year-end deduction summaries from your employer or plan provider. If your W-2 shows amounts but your payroll records do not, contact your payroll office or plan administrator for clarification. Some items may appear only on Box 14 because they are tracked for plan or compliance purposes rather than for federal income tax reporting. Clear documentation, such as payroll reports or plan statements, will help you explain any discrepancy if the return is reviewed. When in doubt, check the plan summary or benefits statements your employer provides each year.
How to Report Box 14 Items on Your Return
Reporting Box 14 items depends on the entry. Roth or after-tax retirement contributions are tracked on the plan itself and reported on tax forms when you take distributions, not directly from the W-2. State taxes withheld in Box 14 may be entered on your state return if you itemize. Pre-tax Section 125 amounts are generally used on Form 2441 or in your tax software to claim the dependent care credit and to reflect reduced taxable wages. If your W-2 includes codes for nonqualified deferred compensation or corrections, follow instructions from your plan or tax software; in some cases the amount is already reflected in other boxes or statements. Keep your W-2 and related plan documents with your tax records so you can substantiate amounts if the return is questioned.
Practical Steps for Employees
- Review Box 14 in full and compare it to your pay stubs and annual plan statements.
- Ask your payroll or HR contact to explain any code or amount you do not recognize.
- Keep copies of your W-2, payroll detail, and plan contribution reports for at least three to seven years.
- Use tax software or a qualified tax professional to enter Box 14 items correctly, especially when they affect credits or deductions.
- Check state rules for deducted or withheld amounts, as they may differ from federal treatment.
When to Seek Professional Guidance
Complex Box 14 entries—such as nonqualified deferred compensation, multiple plan corrections, or state tax withholdings—can affect both your return and your broader tax situation. If you are unsure how a Box 14 amount should be reported, or if it interacts with other income, credits, or retirement distributions, consult a tax professional who is familiar with employment benefits and payroll reporting. They can help ensure your entries are accurate, that you claim the proper adjustments or credits, and that future distributions from plans are projected correctly.
Bottom Line on Box 14
Box 14 is a catch-all area on the W-2 for items that do not fit standard wage or tax lines. Most entries are harmless plan details, but some—like after-tax contributions, pre-tax deductions, or state tax withholdings—can change how you prepare your return. Understanding what each entry means, verifying it against your records, and reporting it correctly will reduce surprises and keep your taxes accurate over time.