The Netchex Definitive Guide to Form W-2 for Employees (2026)

Employers must furnish W-2s to employees by January 31 of the year following the end of the calendar year. If that date falls on a weekend or federal holiday, the due date generally moves to the next business day.

If you have not received your W-2 by early February, contact your employer’s HR team. Employees may also access wage information via an IRS wage and income transcript if a W-2 is unavailable close to the filing deadline.

References 

Source: IRS General Instructions for Forms W-2 and W-3 

Use your W-2 to prepare federal, state, and local income tax returns. The W-2 tells you how much you earned for tax purposes and how much tax was already withheld from your paychecks throughout the year.

Filing software or a tax preparer uses Boxes 1 and 2 for federal taxes, Boxes 15 through 17 for state taxes, and Boxes 18 through 20 for local taxes.

References 

Source: IRS General Instructions for Forms W-2 and W-3 

Yes. W-2s can be furnished electronically, but you must first give affirmative consent. The consent process must be clear, and the delivery method must allow you to access and print the statement.

Many payroll systems handle this through an employee self-service portal. If you withdraw consent, your employer must provide a paper W-2. Check with your HR team to confirm your employer’s policy.

References 

Source: eCFR 26 CFR Section 31.6051-1 

Source: IRS General Instructions for Forms W-2 and W-3 

If you have not received your W-2 by early February, contact your employer first. If the W-2 is still unavailable near the tax filing deadline, you may contact the IRS for assistance or use Form 4852 (Substitute for Form W-2) to file your return with estimated wage and withholding information.

Employers are required to furnish W-2s even for employees who worked only briefly. If you worked even a short period and were paid wages, a W-2 should be issued.

References 

Source: IRS General Instructions for Forms W-2 and W-3 

Box 1 is federal taxable wages after certain pre-tax deductions. Box 2 is federal income tax withheld. Boxes 3 and 5 are wages subject to Social Security and Medicare taxes, which follow different rules than Box 1. Boxes 4 and 6 are the Social Security and Medicare taxes withheld.

Boxes 15 through 20 cover state and local reporting. Box 12 reports specific compensation, benefits, or deferrals using letter codes. Box 14 is used by employers for additional information not captured elsewhere. Different boxes differ because each type of tax follows its own rules about what is included.

References 

Source: IRS General Instructions for Forms W-2 and W-3 

Box 1 is federal taxable wages after certain pre-tax deductions. An employee’s salary is a compensation rate, while Box 1 is a tax result. The most common reasons Box 1 is lower than salary or gross earnings are pre-tax deductions: cafeteria plan medical, dental, and vision premiums; HSA contributions; FSA and Dependent Care FSA contributions; and traditional 401(k) deferrals.

If Box 1 is unexpectedly high, a year-end taxable fringe benefit entry such as personal use of a company vehicle or group-term life insurance may have been added. Compare your gross wages, pre-tax deductions, and any year-end additions to verify the figure.

References 

Source: IRS Publication 15-B Fringe Benefits Guide 

Source: IRS General Instructions for Forms W-2 and W-3 

Boxes 1, 3, and 5 often differ because they follow different tax rules. Box 1 is federal income tax wages. Box 3 is Social Security wages. Box 5 is Medicare wages. Some items reduce federal taxable wages but are still subject to Social Security and Medicare taxes, such as traditional 401(k) deferrals.

Social Security wages are capped at an annual wage base limit, while Medicare wages are not capped. For high earners, Box 3 may stop increasing once the wage base is reached, while Box 5 continues to grow. Validate benefit tax rules and confirm whether you reached the Social Security wage base if boxes seem inconsistent. 

References 

Source: IRS Publication 15 (Circular E) 

Source: IRS Publication 15-B 

A pay stub reflects one pay period or a year-to-date snapshot, while the W-2 is the final year-end summary of taxable wages and withholdings under IRS definitions. A stub may show gross pay while the W-2 shows taxable wages after pre-tax deductions.

Timing also matters. Year-end adjustments for taxable fringe benefits, prior-period corrections, or third-party sick pay may be reflected in W-2 totals even if the last pay stub does not obviously show them. Compare the W-2 to payroll registers and the YTD stub totals and review benefit taxability codes if there is a discrepancy.

References 

Source: IRS Publication 15 (Circular E) 

Source: IRS Publication 15-B 

Box 12 reports specific compensation, benefits, and deferrals using letter codes. Common codes include: D for 401(k) elective deferrals, W for contributions to an HSA, C for taxable group-term life insurance over $50,000, and DD for the cost of employer-sponsored health coverage (informational only, does not change your taxes).

Whether a Box 12 amount is taxable depends on the code. Many codes are purely informational, such as DD, while others represent pre-tax deferrals, such as D, or taxable benefits, such as C. The W-2 and W-3 instructions provide authoritative definitions for each code.

References 

Source: IRS General Instructions for Forms W-2 and W-3 

Box 13 includes three checkboxes: Statutory employee, Retirement plan, and Third-party sick pay. These are checked only when the employee meets the definition for that category.

The Statutory employee box is checked when a worker is treated as an employee for Social Security and Medicare taxes but reports their wages and expenses on Schedule C like a self-employed individual. This status applies to certain types of workers defined by the IRS, such as specific drivers, full-time life insurance sales agents, homeworkers producing goods for an employer, and certain traveling salespeople.

The Retirement plan checkbox generally indicates you participated in an employer retirement plan during the year, which may affect whether you can deduct IRA contributions.

The Third-party sick pay box is checked when sick pay was paid by a third-party insurer rather than directly by your employer.

References 

IRS. General Instructions for Forms W-2 and W-3 – https://www.irs.gov/instructions/iw2w3 

IRS. Publication 15-A: Employer’s Supplemental Tax Guide – https://www.irs.gov/publications/p15a 

Reported tips are included in Box 1 (federal taxable wages) and in Box 5 (Medicare Wages and Tips). Box 7 shows Social Security tips specifically, and Box 8 shows allocated tips if your employer is required to allocate tips.

Allocated tips in Box 8 are not included in Box 1, but you generally must report them on your tax return unless you can prove you received less. If you forgot to report tips to your employer during the year, use Form 4137 when filing your return to calculate Social Security and Medicare tax owed.

References 

Source: IRS Publication 531 Reporting Tip Income 

Source: About Form 8027 

Yes. Bonuses are taxable compensation treated as supplemental wages for withholding purposes. Employers must withhold federal income tax and FICA taxes on bonuses. Bonuses flow into the same wage boxes as other taxable wages and are included in Box 1, 3 and 5.

References 

Source: IRS Publication 15 (Circular E) 

Expense reimbursements are generally non-taxable when paid under an accountable plan, meaning the expense has a business connection, you substantiate it within a reasonable period, and you return any excess. When these requirements are not met, reimbursements may be treated as taxable wages and appear in Box 1.

References 

Source: IRS Publication 463 Travel Gift and Car Expenses 

Source: IRS Publication 15-B 

Federal and state wages can differ because states follow different rules about what is taxable. Some states may not conform to certain federal pre-tax deductions or may treat specific benefits differently. Local taxes can add another layer of variation.

If wages or withholding were reported to the wrong state, a W-2c and state tax amendments may be needed. Contact your employer’s HR team to investigate any discrepancies in state box amounts.

References 

Source: IRS General Instructions for Forms W-2 and W-3 

Notify your employer promptly. If your SSN or name is incorrect, it is important to correct it quickly because SSA uses W-2 data to update your lifetime earnings record. Your employer will need to issue a W-2c to fix the error.

Address errors alone do not require a W-2c if the wage and tax data is correct. Confirm with your employer whether you need to take any additional steps.

References 

Source: IRS General Instructions for Forms W-2 and W-3 

Source: SSA Helpful Hints to Forms W-2c/W-3c Filing 

Form W-2c (Corrected Wage and Tax Statement) is issued when your employer corrects an error on a previously filed W-2. A W-2c may correct wages, withholdings, benefits, or identifying information.

If you have not yet filed your personal tax return, use the original W-2 AND the corrected W-2c information when filing. If you have already filed, whether you need to file an amended return depends on what changed. Consult a tax professional if you are unsure.

References 

Source: IRS General Instructions for Forms W-2 and W-3 

Source: SSA Helpful Hints to Forms W-2c/W-3c Filing 

If a W-2 is missing close to the filing deadline, you may be able to use Form 4852 (Substitute for Form W-2) with estimated wage and withholding information. You can also request an IRS wage and income transcript, which shows W-2 data reported to the IRS by your employer.

Contact your employer first and request a reissue. Most payroll systems allow employees to retrieve prior-year W-2s through a self-service portal.

References 

Source: IRS General Instructions for Forms W-2 and W-3 

Some fringe benefits are taxable and must be included in W-2 wages. Common taxable fringe benefits include personal use of a company vehicle and group-term life insurance coverage over $50,000. Some benefits are taxable for federal income tax but not FICA, or vice versa, depending on the benefit type.

Non-taxable fringe benefits such as employer-paid health insurance premiums under a cafeteria plan do not appear in Box 1, though the total cost of health coverage is reported informally in Box 12 Code DD. 

References 

Source: IRS Publication 15-B Fringe Benefits Guide