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The IRS 3921 form plays a crucial role in the realm of employee stock options. When an employee exercises a qualified stock option under an incentive stock option (ISO) plan, this form must be filed by the employer. It serves to report the transfer of stock to the employee, detailing essential information such as the date of the option exercise, the fair market value of the stock at that time, and the amount paid for the stock. This information is vital for both the employee and the IRS, as it helps determine the tax implications associated with the transaction. Employers are required to submit the form to the IRS and provide a copy to the employee by the end of January following the year of the exercise. Understanding the IRS 3921 form is important for employees who want to ensure they report their income accurately and comply with tax regulations. This form not only assists in tracking stock options but also helps employees take advantage of potential tax benefits associated with ISOs.

Preview - IRS 3921 Form

Attention:
Copy A of this form is provided for informational purposes only. Copy A appears in red,
similar to the official IRS form. The official printed version of Copy A of this IRS form is
scannable, but the online version of it, printed from this website, is not. Do not print and file
copy A downloaded from this website; a penalty may be imposed for filing with the IRS
information return forms that can’t be scanned. See part O in the current General
Instructions for Certain Information Returns, available at IRS.gov/Form1099, for more
information about penalties.
Please note that Copy B and other copies of this form, which appear in black, may be
downloaded and printed and used to satisfy the requirement to provide the information to
the recipient.
If you have 10 or more information returns to file, you may be required to file e-file. Go to
IRS.gov/InfoReturn for e-file options.
If you have fewer than 10 information returns to file, we strongly encourage you to e-file. If
you want to file them on paper, you can place an order for the official IRS information
returns, which include a scannable Copy A for filing with the IRS and all other applicable
copies of the form, at IRS.gov/EmployerForms. We’ll mail you the forms you request and
their instructions, as well as any publications you may order.
See Publications 1141, 1167, and 1179 for more information about printing these forms.
Form 3921
(Rev. April 2025)
Cat. No. 41179O
Exercise of an
Incentive Stock
Option Under
Section 422(b)
Copy A
For
Internal Revenue
Service Center
Department of the Treasury - Internal Revenue Service
OMB No. 1545-2129
For filing information,
Privacy Act, and
Paperwork Reduction
Act Notice, see the
General Instructions
for Certain
Information Returns.
www.irs.gov/Form1099
2525
VOID CORRECTED
TRANSFEROR’S name, street address, city or town, state or province,
country, and ZIP or foreign postal code
TRANSFEROR’S TIN EMPLOYEE’S TIN
EMPLOYEE’S name
Street address (including apt. no.)
City or town,
state or province,
country, and ZIP or foreign postal code
Account number (see instructions)
1 Date option granted
2 Date option exercised
3 Exercise price per share
$
4 Fair market value per share
on exercise date
$
5 No. of shares transferred
6 If other than TRANSFEROR, name, address, and TIN of
corporation whose stock is being transferred
Form
3921 (Rev. 4-2025)
www.irs.gov/Form3921
Do Not Cut or Separate Forms on This Page Do Not Cut or Separate Forms on This Page
Form 3921
(Rev. April 2025)
Exercise of an
Incentive Stock
Option Under
Section 422(b)
Copy B
For Employee
Department of the Treasury - Internal Revenue Service
This is important tax
information and is
being furnished to the
IRS. If you are required
to file a return, a
negligence penalty or
other sanction may be
imposed on you if this
item is required to be
reported and the IRS
determines that it has
not been reported.
OMB No. 1545-2129
CORRECTED (if checked)
TRANSFEROR’S name, street address, city or town, state or province,
country, and ZIP or foreign postal code
TRANSFEROR’S TIN EMPLOYEE’S TIN
EMPLOYEE’S name
Street address (including apt. no.)
City or town,
state or province,
country, and ZIP or foreign postal code
Account number (see instructions)
1 Date option granted
2 Date option exercised
3 Exercise price per share
$
4 Fair market value per share
on exercise date
$
5 No. of shares transferred
6 If other than TRANSFEROR, name, address, and TIN of
corporation whose stock is being transferred
Form
3921 (Rev. 4-2025)
(keep for your records)
www.irs.gov/Form3921
Instructions for Employee
You have received this form because your employer (or transfer
agent) transferred your employer’s stock to you pursuant to your
exercise of an incentive stock option (ISO). You must recognize
(report) gain or loss on your tax return for the year in which you
sell or otherwise dispose of the stock. Keep this form and use it to
figure the gain or loss. For more information, see Pub. 525,
Taxable and Nontaxable Income.
When you exercise an ISO, you may have to include in
alternative minimum taxable income a portion of the fair market
value (FMV) of the stock acquired through the exercise of the
option. For more information, see Form 6251, Alternative
Minimum Tax—Individuals, and its instructions.
Employee’s taxpayer identification number (TIN). For your
protection, this form may show only the last four digits of your
social security number (SSN), individual taxpayer identification
number (ITIN), or adoption taxpayer identification number (ATIN).
However, the employer has reported your complete TIN to the
IRS.
Account number. May show an account or other unique number
your employer or transfer agent assigned to distinguish your
account.
Box 1. Shows the date the option to purchase the stock was
granted to you.
Box 2. Shows the date you exercised the option to purchase the
stock.
Box 3. Shows the exercise price per share of stock.
Box 4. Shows the FMV of a share of stock on the date the option
was exercised.
Box 5. Shows the number of shares of stock transferred to you
pursuant to the exercise of the option.
Box 6. Shows the name, address, and TIN of the corporation
whose stock is being transferred (if other than the corporation
shown in TRANSFEROR boxes in the upper left corner of the
form).
Future developments. For the latest information about
developments related to Form 3921 and its instructions, such as
legislation enacted after they were published, go to
www.irs.gov/Form3921.
Free File Program. Go to www.irs.gov/FreeFile to see if you
qualify for no-cost online federal tax preparation, e-filing, and
direct deposit or payment options.
Form 3921
(Rev. April 2025)
Exercise of an
Incentive Stock
Option Under
Section 422(b)
Copy C
For Corporation
Department of the Treasury - Internal Revenue Service
OMB No. 1545-2129
This copy should
be retained by the
corporation whose
stock has been
transferred under
Section 422(b).
CORRECTED (if checked)
TRANSFEROR’S name, street address, city or town, state or province,
country, and ZIP or foreign postal code
TRANSFEROR’S TIN EMPLOYEE’S TIN
EMPLOYEE’S name
Street address (including apt. no.)
City or town,
state or province,
country, and ZIP or foreign postal code
Account number (see instructions)
1 Date option granted
2 Date option exercised
3 Exercise price per share
$
4 Fair market value per share
on exercise date
$
5 No. of shares transferred
6 If other than TRANSFEROR, name, address, and TIN of
corporation whose stock is being transferred
Form
3921 (Rev. 4-2025)
(keep for your records)
www.irs.gov/Form3921

Document Specifics

Fact Name Description
Purpose The IRS Form 3921 is used to report the transfer of stock acquired through an employee stock purchase plan.
Who Files Employers are responsible for filing this form when they transfer stock to employees.
Filing Deadline Form 3921 must be filed with the IRS by February 28 (or March 31 if filed electronically) of the year following the transfer.
Recipient Copy A copy of Form 3921 must also be provided to the employee by the same filing deadline.
State-Specific Forms Some states may have their own requirements for reporting stock transfers. For example, California requires compliance with state laws regarding employee stock options.
Tax Implications Employees may need to report income from the stock transfer on their tax returns, depending on the specifics of the transaction.

IRS 3921: Usage Instruction

Filling out the IRS 3921 form is an important step for reporting the transfer of stock acquired through an employee stock option plan. After completing the form, it will be submitted to the IRS and provided to the employee. This ensures compliance with tax regulations related to stock options.

  1. Obtain the Form: Download the IRS 3921 form from the official IRS website or request a physical copy from your employer.
  2. Fill in the Recipient's Information: Enter the employee's name, address, and Social Security number in the designated fields.
  3. Provide the Employer's Information: Input the employer's name, address, and Employer Identification Number (EIN).
  4. Detail the Stock Information: Indicate the date the stock was transferred, the number of shares transferred, and the fair market value on the date of transfer.
  5. Complete the Certification: Sign and date the form to certify that the information provided is accurate and complete.
  6. Submit the Form: Send the completed form to the IRS and provide a copy to the employee.

Learn More on IRS 3921

What is IRS Form 3921?

IRS Form 3921 is a tax form used to report the transfer of stock acquired through an employee stock purchase plan (ESPP). Specifically, it is required when an employee exercises stock options that were granted under a qualified stock option plan. This form helps both the employee and the IRS track the income and tax implications of the stock transfer.

Who is required to file Form 3921?

Employers who grant stock options to employees must file Form 3921. This includes any company that offers an employee stock purchase plan or similar equity compensation. The employer must provide a copy of the form to the employee as well.

When is Form 3921 due?

Form 3921 must be filed with the IRS by January 31 of the year following the stock option exercise. Employers must also provide a copy to the employee by the same date. Timely filing is crucial to avoid penalties.

What information is included on Form 3921?

Form 3921 includes several key pieces of information:

  • The name, address, and taxpayer identification number of both the employer and the employee.
  • The date the option was granted.
  • The date the option was exercised.
  • The fair market value of the stock on the exercise date.
  • The option price per share.
  • The number of shares transferred.

How does Form 3921 affect my taxes?

Form 3921 is important for determining your tax liability. When you exercise stock options, the difference between the fair market value of the stock and the option price may be considered income. This income can affect your overall tax situation, including your tax bracket and potential capital gains if you sell the stock later.

Can I file Form 3921 electronically?

Yes, employers can file Form 3921 electronically. The IRS encourages electronic filing for efficiency and accuracy. However, ensure that you follow the IRS guidelines for electronic submissions to avoid any issues.

What if I do not receive Form 3921 from my employer?

If you do not receive Form 3921 from your employer, it is important to reach out to them. Employers are required to provide this form, and you will need it for your tax records. If they fail to provide it, you may need to estimate the information based on your records of the stock option grant and exercise.

Are there penalties for not filing Form 3921?

Yes, there can be penalties for failing to file Form 3921 or for filing it late. The IRS may impose fines based on how late the form is filed. Additionally, not providing the form to employees can lead to complications for both the employer and the employee during tax time.

Where can I find Form 3921?

Form 3921 can be found on the IRS website. The form is available for download, along with instructions for completing it. Make sure to use the most current version to ensure compliance with IRS regulations.

Common mistakes

Filling out the IRS Form 3921 can be a straightforward task, but many people make mistakes that can lead to delays or complications. One common error is providing incorrect or incomplete information. This can include misspelling names, entering wrong Social Security numbers, or failing to include all required details. Each piece of information must match the official records to avoid issues.

Another frequent mistake involves the dates. The form requires specific dates, such as the date of exercise and the date of transfer. If these dates are incorrect or not formatted properly, it can cause confusion and potential rejection of the form. Always double-check the dates before submission.

Many individuals overlook the importance of signing the form. A signature is not just a formality; it verifies that the information provided is accurate. Submitting the form without a signature can lead to it being deemed invalid.

Some filers also fail to keep a copy of the completed form for their records. This oversight can create problems later, especially if the IRS requests additional information or clarification. Keeping a copy ensures that you have the necessary documentation on hand.

Another mistake is not submitting the form on time. The IRS has strict deadlines for filing Form 3921. Missing these deadlines can result in penalties or complications with your tax filings.

Inaccurate calculations can also pose a problem. The form requires specific figures, such as the fair market value at the time of exercise. Ensure that all calculations are correct to avoid discrepancies.

Some people neglect to check for updates or changes to the form. The IRS occasionally revises forms, and using an outdated version can lead to errors. Always ensure you have the most current form before filling it out.

Additionally, not understanding the purpose of the form can lead to mistakes. Form 3921 is used to report the transfer of stock acquired through an employee stock option plan. Misunderstanding its purpose can lead to providing irrelevant information.

Lastly, many filers do not seek help when needed. If there is uncertainty about how to complete the form, consulting a tax professional can prevent costly mistakes. Do not hesitate to ask for assistance to ensure accuracy.

Documents used along the form

The IRS 3921 form is essential for reporting the transfer of stock acquired through an employee stock purchase plan. In addition to this form, several other documents may be required or helpful in the process. Below is a list of forms and documents that are often used alongside the IRS 3921 form.

  • IRS Form 1040: This is the standard individual income tax return form used by taxpayers to report their annual income and calculate their tax liability.
  • IRS Form 8949: This form is used to report sales and exchanges of capital assets, including stocks. It helps to calculate capital gains and losses.
  • Schedule D: This schedule is attached to Form 1040 and summarizes capital gains and losses from transactions reported on Form 8949.
  • IRS Form W-2: Employers issue this form to report wages paid to employees and the taxes withheld. It is important for tax filing purposes.
  • IRS Form 1099: This form is used to report various types of income other than wages, salaries, and tips. It may be relevant if the stock transfer affects income reporting.
  • Stock Purchase Agreement: This document outlines the terms and conditions of the stock purchase, including the number of shares and purchase price.
  • Employee Stock Ownership Plan (ESOP) Documents: These documents detail the structure and rules of the ESOP, which may include provisions relevant to stock transfers.
  • Brokerage Statements: These statements provide a record of transactions and holdings, which can be helpful for tracking stock purchases and sales.
  • Tax Preparation Software: Many individuals use software to assist in filing their taxes, which may include features for reporting stock transactions accurately.

Understanding these documents can help ensure that all necessary information is accurately reported to the IRS. Proper documentation is crucial for compliance and for avoiding potential issues with tax filings.

Similar forms

The IRS Form 3921 is similar to Form 3922, which is used for the transfer of stock acquired through an employee stock purchase plan. Both forms serve to report the transfer of stock to employees, ensuring that the IRS receives accurate information about stock transactions that may affect an employee's tax obligations. While Form 3921 focuses on the exercise of incentive stock options, Form 3922 deals with non-statutory stock options. Each form is essential for compliance with tax regulations related to stock compensation.

Another document comparable to Form 3921 is Form 1099-MISC. This form reports miscellaneous income, including payments made to independent contractors. While Form 3921 specifically addresses stock options and their tax implications for employees, Form 1099-MISC covers a broader range of income sources. Both forms help the IRS track income that may not be reported on a standard W-2, ensuring that all taxable income is accounted for.

Form 1099-NEC is also similar to Form 3921. This form is used to report nonemployee compensation, primarily for independent contractors. Both forms require the payer to provide information to the IRS about payments made to individuals. While Form 3921 focuses on stock options, Form 1099-NEC is concerned with cash payments for services rendered. Each form plays a crucial role in the IRS's efforts to monitor income and enforce tax compliance.

Form W-2 is another document that shares similarities with Form 3921. W-2 forms report wages, tips, and other compensation paid to employees throughout the year. Both forms are essential for employees to accurately report their income on their tax returns. While Form 3921 is specifically for stock options, the W-2 captures all forms of compensation, making both documents vital for comprehensive income reporting.

Form 1042-S is comparable to Form 3921 in that it reports income paid to foreign persons. Both forms require the payer to provide detailed information to the IRS about the nature of the payments. Form 1042-S specifically addresses income subject to withholding tax for non-resident aliens, while Form 3921 deals with stock options for employees. Each form ensures that the IRS has the necessary information to enforce tax regulations effectively.

Form 8886 is also similar to Form 3921 in that it requires disclosure of certain transactions to the IRS. This form is used to report potentially abusive tax shelters. While Form 3921 focuses on stock options, Form 8886 serves to alert the IRS about transactions that may not align with standard tax practices. Both forms highlight the importance of transparency in tax reporting.

Form 1098 is another document that bears resemblance to Form 3921. This form reports mortgage interest paid by individuals. While Form 3921 is focused on stock options and employee compensation, Form 1098 ensures that taxpayers can claim deductions for mortgage interest. Both forms contribute to the accurate reporting of financial transactions that affect an individual's tax liability.

Form 5498 is similar to Form 3921 as it reports contributions to individual retirement accounts (IRAs). Both forms provide the IRS with information that helps track taxpayer contributions and ensure compliance with tax laws. While Form 3921 deals with stock options, Form 5498 focuses on retirement savings, highlighting the importance of accurate reporting in different areas of personal finance.

Form 8862 is also akin to Form 3921 in that it is used to claim certain tax credits. This form is specifically for taxpayers who have previously been denied the Earned Income Tax Credit (EITC) and wish to claim it again. Both forms require detailed information to be submitted to the IRS, ensuring that taxpayers meet the necessary criteria for claiming benefits. While Form 3921 is about stock options, Form 8862 emphasizes the importance of proper documentation in claiming tax credits.

Finally, Form 990 is similar to Form 3921 in that it provides transparency in financial reporting. This form is used by tax-exempt organizations to report their financial activities to the IRS. While Form 3921 deals with individual employee stock options, Form 990 ensures that organizations comply with tax laws and maintain accountability. Both forms play critical roles in the IRS's oversight of financial transactions.

Dos and Don'ts

When filling out the IRS 3921 form, it’s important to be careful and thorough. Here’s a list of things you should and shouldn’t do:

  • Do double-check all personal information for accuracy.
  • Do ensure that the stock transfer date is correctly entered.
  • Do keep a copy of the completed form for your records.
  • Do file the form by the deadline to avoid penalties.
  • Don't leave any required fields blank.
  • Don't use incorrect or outdated information.
  • Don't forget to sign the form if required.
  • Don't hesitate to seek help if you’re unsure about any part of the form.

Misconceptions

The IRS Form 3921 is often misunderstood, leading to confusion among taxpayers and employers alike. Below are nine common misconceptions regarding this important tax document.

  • Form 3921 is only for employees who exercise stock options. Many believe that this form applies solely to employees who have exercised their stock options. In reality, it is also relevant for those who have received stock as part of an employee stock purchase plan.
  • Only large companies need to file Form 3921. This form is required for any employer who grants stock options or stock under an employee stock purchase plan, regardless of the company's size.
  • Form 3921 is not necessary if the stock is not sold. Some individuals think that if they do not sell the stock, they do not need to file this form. However, the form is still required to report the exercise of options, even if the stock remains unsold.
  • Form 3921 only needs to be filed once. There is a misconception that this form is a one-time requirement. In fact, it must be filed each year that stock options are exercised or stock is transferred under a plan.
  • Filing Form 3921 is optional. Some believe that filing this form is a matter of choice. However, it is a mandatory requirement for employers to report the relevant transactions to the IRS.
  • Form 3921 is the same as Form 1099. Many confuse these two forms. While both serve reporting purposes, Form 3921 specifically pertains to stock options and employee stock purchase plans, whereas Form 1099 covers a broader range of income types.
  • There are no penalties for not filing Form 3921. Some individuals think that failing to file this form will go unnoticed. However, the IRS can impose penalties for noncompliance, which can add financial burdens to the employer.
  • Form 3921 can be filed at any time during the year. There is a belief that timing is flexible. In truth, Form 3921 must be filed within a specific timeframe after the exercise of stock options or the transfer of stock.
  • Understanding Form 3921 is only necessary for tax professionals. While tax professionals often handle these forms, it is crucial for employees and employers to understand the implications of this form for accurate tax reporting and compliance.

By addressing these misconceptions, individuals and businesses can better navigate the complexities of tax reporting related to stock options and employee stock purchase plans.

Key takeaways

The IRS 3921 form is an important document for both employers and employees involved in stock option exercises. Here are some key takeaways regarding its use:

  • The form is used to report the exercise of incentive stock options (ISOs) under Internal Revenue Code Section 422.
  • Employers must file Form 3921 for each employee who exercises ISOs during the tax year.
  • The form provides essential information, including the date of the option grant, exercise date, and the fair market value of the stock.
  • Employees receive a copy of Form 3921, which they need for their tax records and to report any income from the exercise.
  • Timely filing is crucial. Employers must submit the form to the IRS by the end of February if filing by paper, or by the end of March if filing electronically.
  • Failure to file Form 3921 can result in penalties for the employer, so it’s important to ensure compliance.
  • The information on the form helps determine whether the employee qualifies for favorable tax treatment on the stock options.
  • Employees should retain the form for their records, as it may be needed for future tax filings or audits.
  • Reviewing the form for accuracy before submission can prevent complications and ensure that all parties have the correct information.