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Support - For employees, contractors or advisors: 83(b) Filing Instructions


Nancy Thanki

Updated 20 July 2022

Are you a US taxpayer who has recently exercised your grant of restricted shares? Since these shares were early exercised prior to being fully vested, you can opt to file an 83(b) election with the Internal Revenue Service (IRS). Read more about when you should file an 83(b) election.

You have 30 days from the date of your share purchase to send the 83(b) election to the IRS.

For statutory reasons, this form must be wet-ink signed (and dated) and cannot be signed electronically. You must file physical copies of the form by mail with the IRS.

Here is the step-by-step process for filing your 83(b) election:

Step 1. πŸ–¨οΈ Print out 4 copies of the 83(b) election + 2 copies of the cover letter. You'll find these as part of a document called "83(b) Election and Instructions", located in your Capbase Dashboard > Document Room.

Step 2. πŸ“ Sign + date all 4 copies of the 83(b) election using a black or blue ink pen.

Step 3. βœ‰οΈ Send 1 copy of the 83(b) election to your company's address. The company address is listed in your Capbase Dashboard.

Step 4. πŸ—„οΈ Retain 1 copy of the 83(b) election for your personal tax records.

Step 5. βœ‰οΈ Send 2 copies of the 83(b) election + cover letter to the IRS (your personal address is used to designate the local IRS service center) inside a self-addressed stamped envelope. Make sure to send your 83(b) election packet to the IRS via registered mail for proof of receipt of the form by tax authorities.

Step 6.🧾 You will receive a stamped copy of your 83(b) election by mail from the IRS.

Step 7. βœ… Mark your 83(b) election as filed by uploading the stamped copy to your Compliance Calendar. You'll go to your Capbase Dashboard > Compliance Calendar > Upcoming filings > 83(b) election > Upload document > Complete filing.

If you have any questions, feel free to reach out to our support through live chat or via email at

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