What Is Box 13 on a W-2? Statutory Employee, Retirement, Sick Pay

Box 13 on a W-2 is not a dollar figure. It’s a row of three checkboxes — Statutory Employee, Retirement Plan, and Third-Party Sick Pay — and each one flags a special rule that changes how you file. A check in Statutory Employee moves your wages onto Schedule C. A check in Retirement Plan can shrink or eliminate your Traditional IRA deduction. A check in Third-Party Sick Pay tells you some of your W-2 income came from an insurer rather than your employer. Only the boxes that apply get checked, and more than one can be checked at once.¹

Statutory Employee

A statutory employee is a worker who would normally be an independent contractor under common-law rules but is treated as an employee by statute for Social Security and Medicare purposes. Only four groups of workers can qualify: certain delivery drivers (beverages other than milk, meat, produce, bakery goods, or laundry and dry cleaning pickup), full-time life insurance agents working primarily for one company, home workers using materials the employer supplies, and full-time traveling or city salespersons turning in orders from wholesalers, retailers, contractors, and similar businesses. Even then, three conditions have to be met: you perform substantially all the services personally, you don’t have a significant investment in the equipment, and the work is continuing for the same payer.²

If the box is checked, your employer withheld Social Security and Medicare taxes for you, the way they would for any employee. But they did not withhold federal income tax. You cover income tax yourself, either through estimated payments or at filing.²

The filing change matters more than the withholding one. You report your Box 1 wages on Schedule C (Profit or Loss From Business) instead of the main wage line of Form 1040. On line 1 of Schedule C, you check the box identifying the income as statutory employee wages.³ Because Social Security and Medicare taxes were already paid, you don’t owe self-employment tax on those wages, which is a roughly 15.3 percent difference compared to a true contractor.

Schedule C also lets you deduct ordinary and necessary business expenses — mileage, travel, supplies, and other work-related costs — directly against the income. Regular W-2 employees cannot deduct unreimbursed business expenses on their federal returns. Statutory employees can.

Retirement Plan

The Retirement Plan box gets checked when you were an “active participant” in a qualifying employer-sponsored retirement plan at any point during the year. Qualifying plans include 401(k)s, traditional pensions, profit-sharing plans, 403(b) annuity contracts, SIMPLE IRAs, and SEP plans, along with most government employee plans. A standalone 457(b) plan does not count, and non-qualified deferred compensation plans don’t trigger the box either.⁴

What “active participant” means depends on the plan. In a defined contribution plan like a 401(k), any contribution or forfeiture credited to your account during the year counts, including an employer match you received without putting anything in yourself. In a defined benefit pension, you’re an active participant for any year you were eligible to participate, vested or not.⁴

What It Does to Your Traditional IRA Deduction

You can still contribute to a Traditional IRA when the box is checked. Whether you can deduct the contribution depends on your income. For the 2026 tax year, the IRA contribution limit is $7,500 ($7,000 in 2025), plus a $1,100 catch-up if you’re 50 or older.⁵ The 2026 deduction phase-out ranges for people covered by a workplace plan are:

Single: $81,000 to $91,000 modified adjusted gross income. Full deduction below $81,000; none above $91,000.
Married filing jointly, if you’re the one covered: $129,000 to $149,000.
Married filing separately: $0 to $10,000, which eliminates the deduction for almost anyone using this status.

A spouse’s checkbox can reach you too. Even if your own W-2 shows no check in the Retirement Plan box, your deduction phases out between $242,000 and $252,000 of combined MAGI in 2026 if your spouse is covered.⁵ If neither spouse is covered, no income limit applies to the Traditional IRA deduction.⁶

Roth IRAs sit outside this. Roth eligibility is based only on income, and the Retirement Plan checkbox has no effect on whether you can contribute. The 2026 Roth phase-out ranges are $153,000 to $168,000 for single filers and $242,000 to $252,000 for married couples filing jointly.⁵

Third-Party Sick Pay

The Third-Party Sick Pay box is checked when some of the income reported on your W-2 was paid by a third party — usually an insurance company handling short-term disability or sick leave benefits — rather than by your employer directly.¹

Whether those benefits are taxable comes down to who paid the premiums. If your employer paid them, or you paid them through pre-tax payroll deductions, the benefits are taxable. If you paid the premiums entirely with after-tax dollars, the benefits are generally not taxable.⁷ Many short-term disability plans offer both pre-tax and after-tax premium options at enrollment, so what you chose months earlier controls the answer now.

The taxable portion of third-party sick pay is already included in Box 1 wages, Box 3 Social Security wages, and Box 5 Medicare wages. Any nontaxable portion appears separately in Box 12 under Code J and is not included in those wage figures. Code J is informational, showing you how much of the sick pay was excluded from your taxable income.⁷

If a Box 13 Checkbox Is Wrong

A box checked (or missing) in error can cost you. An incorrect Retirement Plan check can make you think your Traditional IRA deduction is limited when it isn’t. A missing Statutory Employee check can send you to the wrong form and cost you business expense deductions. Start by asking your employer’s payroll or HR department to issue a corrected W-2, Form W-2c.⁸

If your employer won’t fix it or doesn’t respond by the end of February, you can call the IRS at 800-829-1040 or visit a Taxpayer Assistance Center. The IRS will send the employer a letter requesting a correction within ten days. If the corrected W-2 still hasn’t arrived in time to file, the IRS will send you Form 4852, a substitute W-2 you complete by estimating your wages and withholdings from your final pay stub.⁹

If you filed with Form 4852 or with an incorrect W-2 and later receive corrected information that changes your tax liability, file an amended return on Form 1040-X.⁹

1
Internal Revenue Service. General Instructions for Forms W-2 and W-3 (2026) – Specific Instructions for Form W-2
2
Internal Revenue Service. Statutory Employees
3
Internal Revenue Service. 2025 Instructions for Schedule C (Form 1040)
4
Internal Revenue Service. Common Errors on Form W-2 Codes for Retirement Plans
5
Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026, IRA Limit Increases to $7,500
6
Internal Revenue Service. Retirement Topics – IRA Contribution Limits
7
Internal Revenue Service. Reporting Sick Pay Paid by Third Parties Notice 2015-6
8
Internal Revenue Service. Form W-2c (Rev. January 2026) – Corrected Wage and Tax Statement
9
Internal Revenue Service. W-2 – Additional, Incorrect, Lost, Non-Receipt, Omitted