How to File a Section 83(b) Election: Step-by-Step

The IRS 83(b) election 30 days rule gives you 30 calendar days from the date Section 83 property is transferred to you—not from grant approval or your offer letter—to mail a signed Section 83(b) election to the Internal Revenue Service campus where you file Form 1040, furnish a copy to your employer, and keep mailing proof that shows when USPS accepted the envelope. As of June 2026, most employees use IRS Form 15620 (April 2025 revision) or equivalent language under Treasury Regulation §1.83-2. Missing the window generally forecloses the election for that transfer; there is no routine IRS extension.

30calendar days — statutory Section 83(b) window from property transferVerified against IRS Form 15620 instructions (April 2025), accessed 2 June 2026.

Strategy and economics live elsewhere—start with Section 83(b): strategic overview if you have not decided whether to elect. This page is how to file correctly once you and your CPA have locked fair market value and restrictions.

Seven-step filing workflow (execution order)

Section 83(b) election is a paper filing that elects under IRC §83(b) to include property in gross income at transfer. Treat the steps below as a single afternoon plus a post office trip when you start early in the window.

Step 1–2: Lock the transfer date and last filing day

Take Priya, a staff engineer in San Jose who early-exercises 8,000 unvested shares of Nimbus Analytics, Inc. on 14 May 2026. Stock Administration confirms transfer date 14 May 2026. The 30th calendar day is 13 June 2026. If 13 June falls on a Saturday, Sunday, or legal holiday, Form 15620 instructions incorporate IRC §7503—a timely postmark on the next succeeding day that is not Saturday, Sunday, or a legal holiday may count; confirm on a printed calendar before you choose day 30.²

Use the interactive tracker for mail-by buffer math:

Our position: Mail by day 25 whenever the bargain element exceeds $10,000—Certified Mail proves USPS acceptance, not IRS processing speed.

Step 3: Complete the election package

Required disclosures align with Form 15620 boxes and Treas. Reg. §1.83-2:³

Critical Warning: FMV must match 409A (private) or market price (public)—not a back-of-envelope guess from your manager.

Draft interactively after numbers are fixed:

Election Under Section 83(b) of the Internal Revenue Code

The undersigned taxpayer hereby elects under Section 83(b) of the Internal Revenue Code to include in gross income as compensation the excess (if any) of the fair market value of the property described below over the amount paid for such property, determined as of the date the property was transferred.

1. Name of taxpayer: [your legal name]

2. Address of taxpayer: [street, city, ST ZIP]

3. Taxpayer identification number: [SSN or ITIN]

4. Description of property with respect to which the election is made:
[number of shares] shares of [class of shares] stock of [issuer legal name].

5. Date on which property was transferred: [transfer date]

6. Taxable year for which election is made: 2026

7. Nature of restrictions to which the property is subject:
[describe vesting, repurchase, forfeiture, etc.]

8. Fair market value at time of transfer (determined without regard to restrictions): [FMV per share on transfer date]

9. Amount paid for the property: [total amount paid for the shares]

The undersigned taxpayer will file this election with the Internal Revenue Service office with which the taxpayer files their annual federal income tax returns no later than 30 days after the date the property was transferred to the taxpayer.

Copies of this election have been furnished to the person for whom the taxpayer performed the services as required under Treasury Regulation §1.83-2(d):

[employer / service recipient]
[employer mailing address]

Signature of taxpayer: ________________________________
Date signed: ________________________________

( Sign and date after printing — ink signature typically required for paper filing )

Step 4: Cover letter (when it helps—and what to say)

The IRS does not publish a mandatory cover letter for Section 83(b) elections. Anecdotally, clerks route paper faster when the envelope is not a bare Form 15620 with no context—especially for ITIN pending, expat campuses, or early exercise packages where the transfer date is easy to misread.

Methodology: On 2 June 2026, we reviewed IRS Form 15620 instructions (April 2025), Treas. Reg. §1.83-2, and six practitioner checklists from U.S. law firms and CPA firms (accessed May–June 2026). We distilled recurring cover-letter elements into the matrix in the next section—this is a filing-completeness aid, not a substitute for preparer advice.

Copy-paste cover letter template

[Your name]
[Your address]
[Date]

Internal Revenue Service
[Campus city, state, ZIP+4 from Where To File table]

Re: Section 83(b) Election — [Your legal name] — TIN [SSN / ITIN / Applied for]

Enclosed please find my original Section 83(b) election under IRC §83(b) with respect to
[number] shares of [Issuer legal name] transferred on [transfer date].

The election is filed within 30 days of transfer pursuant to Treasury Regulation §1.83-2.
A copy has been furnished to [Employer legal name] on [date].

Contact: [email] | [phone]

Respectfully submitted,
[Signature]
[Printed name]

Where I'm less sure—whether to include estimated tax payment vouchers in the same envelope varies by preparer; some counsel mails payments separately to avoid mis-routing. Your mileage will vary depending on whether you owe tax with the election itself versus only on the April filing deadline.

Step 5–6: IRS address and Certified Mail

Rule: Mail to the same IRS campus as a paper Form 1040 without payment for your state of residence—not your employer’s HQ state. Form 15620 instructions (April 2025) repeat this routing.⁴

The 50-state row-by-row directory is maintained in Where to mail your 83(b) election—re-verify on IRS.gov the week you seal the envelope.

Envelope block

[Your return address]

Department of the Treasury
Internal Revenue Service
[Ogden UT | Kansas City MO | Austin TX] [ZIP+4 from table]
ATTN: Section 83(b) Election — [Legal name]

Expats / Form 2555 filers: Many taxpayers abroad mail Form 1040 without payment to Austin, TX 73301-0215 USA—not domestic 73301-0002. See Section 83(b) for expats.

Post office script

# At USPS counter — confirm fees on usps.com (checked 2 June 2026)
# 1. Hand clerk signed original + optional one-page cover letter
# 2. Say: "Certified Mail, please, with Return Receipt"
# 3. Keep PS Form 3800; photograph sealed envelope showing label
# 4. Export tracking PDF to your tax folder within 24 hours

USPS lists Certified Mail base fees around $4.85 plus postage (checked usps.com 2 June 2026). Deep dive: Official 30-day deadline & mailing rules.

Original research: filing-package completeness matrix

We scored 10 envelope elements practitioners repeat across IRS instructions and firm checklists (1 = optional polish, 5 = commonly cited as essential for a clean filing). Compiled 2 June 2026 from Form 15620 instructions, Treas. Reg. §1.83-2, and six U.S. practitioner guides (law firms and CPA firms, accessed May–June 2026).

Composite rule of thumb: If items 1, 5, 6, 7, and 8 are complete within 48 hours of mailing, you have practitioner-grade documentation. Item 3 is worth the extra page when your facts are messy.

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  "@context": "https://schema.org",
  "@type": "Dataset",
  "name": "Section 83(b) filing-package completeness matrix — 10 elements (June 2026)",
  "description": "Priority scoring of envelope, cover letter, and retention items for timely Section 83(b) elections, compiled from IRS Form 15620 instructions and six U.S. practitioner checklists.",
  "creator": { "@type": "Organization", "name": "VestingStrategy.com Research" },
  "datePublished": "2026-06-02",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "isAccessibleForFree": true,
  "url": "https://www.vestingstrategy.com/guides/how-to-file-section-83b-election-step-by-step/#dataset-83b-filing-package-matrix"
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Step 7: Employer copy and verification

Worked example: Daniel, restricted stock in Boston

Facts (hypothetical): Daniel, a director of product at a private health-tech company in Massachusetts, receives 12,000 restricted shares on 3 June 2026. 409A FMV = $2.10/share; amount paid $0. He is a Massachusetts resident filing paper Form 1040 without payment.

Verdict for Daniel: Massachusetts → Kansas City under 2025 tables—do not copy a Texas founder’s Austin envelope.

Worked example: Lena, early exercise while abroad

Facts (hypothetical): Lena, a U.S. citizen, early-exercises 25,000 unvested shares of Arcwell Systems, Inc. on 20 May 2026 while living in London. She files Form 2555; preparer confirms international Form 1040 table.

Where I'm less sure—state residency still on a California return while abroad can change campus choice; Lena should not guess between Ogden and 0215 Austin without preparer written instruction.

Steel-man: “HR’s portal upload is enough—I’ll skip the IRS”

Best case for HR-only filing: Your company runs a white-glove 83(b) program, counsel prepares the envelope, and Stock Admin couriers the IRS original for you. Some venture-backed startups still do this well.

Why HR-only fails: Treas. Reg. §1.83-2 requires filing with the IRS, not the employer. An HR inbox upload without a timely IRS original does not make a valid election. Anecdotally, the failures we see in employee forums are employer portal “done” checkmarks with no Certified Mail receipt.

Our position: Treat HR upload as step 7, never a substitute for step 6. If your company offers mailing as a benefit, still demand a copy of the Certified Mail receipt in your personal folder.

Verdict

For irs 83(b) election 30 days execution: run the seven steps in order, use Form 15620 (or equivalent language), add a cover letter when your TIN or campus is non-standard, mail USPS Certified Mail to the correct campus, and close with the filing-package matrix within 48 hours. File early in the window, escalate to counsel on day 28+ or when accelerated income exceeds cash on hand, and pair this guide with mailing addresses, official Form 15620 detail, and 30-day deadline mechanics.

Related guides

Primary sources

Footnotes

Disclaimer: This article is educational only and is not tax, legal, or financial advice. Section 83(b) elections are irrevocable and can increase current-year tax. Confirm transfer dates, FMV, mailing addresses, and payment obligations with a qualified CPA, enrolled agent, or tax attorney before filing.