T
The Daily Insight

Do I need to report form 3921 on my taxes?

Author

Emma Jordan

Published Feb 12, 2026

3921 is an informational form only. It is generally not entered on your tax return unless you then sold the stock, or if you could be subject to alternative minimum tax (AMT).

Is form 3921 reported to IRS?

No, the startup will not owe any taxes on the employees exercise of ISOs and Form 3921. Form 3921 is an informational report, similar to 1099s, that lets the IRS know that certain individuals/entities received compensation.

When Must form 3921 be filed?

Paper filings of Form 3921 and 3922 for 2020 transactions must be submitted to the IRS with transmittal Form 1096 for each type of return and are due no later than March 1, 2021 (typically, Forms 3921 and 3922 filed on paper are due no later than February 28 of each year, but because February 28 falls on a Sunday in …

How are puts and calls taxed?

When a put or call option expires, you treat the premium payment as a short-term capital gain realized on the expiration date. If you write a put option that gets exercised (meaning you have to buy the stock), reduce the tax basis of the shares you acquire by the premium you received.

How are ISO’s taxed?

ISOs are taxed in two ways. The first method is on the spread, and the second is on any increase (or decrease) in the stock’s value when it disposed of or sold. 2 The income from ISOs is subject to regular income tax and alternative minimum tax, but it is not taxed for Social Security and Medicare purposes.

Do employees need to file 3921?

If employees exercised incentive stock options (ISOs) last tax year, your company needs to file IRS Form 3921. Companies must file one form per ISO exercise, and if they miss the deadline or ignore IRS reminders and fail to file, they could end up paying expensive fines.

What do you need to know about form 3922?

Information about Form 3922, Transfer of Stock Acquired Through An Employee Stock Purchase Plan Under Section 423(c), including recent updates, related forms, and instructions on how to file. Corporations file Form 3922 for each transfer of stock acquired by an employee stock purchase plan.

When to file Form 3921 for incentive stock option?

About Form 3921, Exercise of an Incentive Stock Option Under Section 422 (b) Corporations file this form for each transfer of stock to any person pursuant to that person’s exercise of an incentive stock option described in section 422 (b).

When does the IRS launch the Tax Pro account?

Plans call for the IRS to launch the Tax Pro Account in 2021. Tax Pro Account will allow tax professionals to digitally initiate and digitally sign third-party authorizations and send them to the client’s IRS online account for a digital signature.

Can a tax professional use an electronic signature?

Tax professionals may use handwritten or any form of an electronic signature for the client or themselves on authorization forms submitted through the new online tool. Authorization forms that are mailed or faxed must still have handwritten signatures.