File 3921 Online
Looking for an efficient way to file 3921 online? IRS approved 1099ly allows you to eFile your 3921 with security and ease, all online. IRS Form 3921 is used to report the exercise of an incentive stock option.
Why eFile 3921 with 1099ly?
- Easy and Secure eFiling
- Quick and Accurate Reporting
- State Filing Compliance
- Supports Bulk eFiling
- USPS Address Validation
- Notice Management
What is IRS Form 3921?
IRS Form 3921 is used to report the exercise of an incentive stock option.
When would you need to file a 3921?
- If your corporation offers an incentive stock option, and the option is exercised, you must file Form 3921 for each transfer.
- There are many exceptions, including incentive stock options used by nonresident, alien employees.
For more, visit www.irs.gov
3921 Deadline and Important Dates
With 1099ly.com, you can schedule the date that your forms are transmitted to the IRS. Scheduling your forms gives you time between when we email/USPS your forms to vendors and when we send the forms to the IRS. This is useful because your vendors may have edits to make. You can make those changes in 1099ly before the scheduled date at no extra charge. We automatically schedule your IRS eFile transmission at a week away from when you submit, or by the deadline. You can edit this date to match your preference.
| Filing Type | Due Date |
|---|---|
| Recipient Copy | Monday - February 02, 2026 |
| IRS eFile | Tuesday - March 31, 2026 |
| IRS Paper Filing | Monday - March 02, 2026 |
3921 eFile Info
Electronically filed 3921 Forms are directly transmitted to the IRS from 1099ly.
You will receive IRS acknowledgement of your eFile by email within 3-7 business days.
3921 Fee Calculator
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The CF/SF Combined Federal State Filing Program allows parts of your federal filing to be transmitted to the state at no extra charge. Non-participating states must receive a direct filing. Learn more about state filing here.