83B Election: How to Save Thousands on Startup Stock

Quick Answer

The 83B election lets you pay income tax on restricted stock at grant — when value is low — instead of at vesting, when it may be worth far more. Filing within 30 days of grant is mandatory; missing the deadline forfeits the election permanently.

What Is the 83B Election?

The 83B election is an IRS election under Internal Revenue Code Section 83(b) that fundamentally changes how and when you pay taxes on restricted stock. Normally, when you receive restricted stock that vests over time, you don't pay income tax until the shares vest — but the tax is calculated based on the fair market value (FMV) at vesting, not at grant. For startup founders receiving shares at near-zero value, this creates a massive tax burden down the road.

By filing an 83B election within 30 days of receiving the shares, you flip the tax timing. Instead of paying tax when the shares vest (years later, when they're worth much more), you pay tax now, at grant, when the FMV is typically pennies per share. This is particularly valuable for early employees and founders at pre-revenue companies, where the spread between grant FMV and vesting FMV is enormous.

The election is named after the IRS revenue ruling that created it and has been a founder tax-planning staple for decades. The key is that you must file it within 30 days — there are no extensions, no exceptions, no do-overs.

The 30-Day Deadline — No Exceptions

The IRS will not grant extensions for an 83B election. Your deadline is exactly 30 calendar days from the date of grant — not business days, calendar days. If the grant date is June 1, you must file by June 30. If you file on July 1, the election is invalid, and you're locked into the vesting-date taxation method permanently.

To protect yourself, send the election via certified mail with return receipt requested to the appropriate IRS service center for your state. You must also:

• Deliver or mail a copy to your employer's company counsel or corporate officer
• Keep a copy for your tax records

The IRS will not acknowledge receipt or confirm filing. The certified mail receipt serves as your proof of timely filing. Many founders also email or hand-deliver a copy to their company's HR or legal department on the same day they mail it, to avoid any dispute over whether the company received the form.

Tax Savings Example

Imagine you're a founder receiving 1 million shares at a grant price of $0.001 per share (which is not uncommon in very early-stage startups). Your company is pre-revenue.

With an 83B election:

• You file within 30 days
• You pay income tax on $1,000 of value (1,000,000 shares × $0.001)
• At a 37% marginal rate (federal + state), that's ~$370 in tax
• You own the shares outright immediately
• Five years later, when shares are worth $2.00 each, the stock is worth $2 million — but you owe no additional income tax on that appreciation
• If you sell, you pay capital gains tax on the profit above the $1,000 basis you established

Without an 83B election (vesting schedule):

• Your stock vests over 4 years, typically with a 1-year cliff
• After 1 year, 250,000 shares vest when the company is worth $10 million (say $5.00 per share)
• You now owe income tax on 250,000 × $5.00 = $1,250,000 at ordinary income rates
• At 37% rate, that's ~$462,500 in tax — due even if you don't sell
• This repeats quarterly as shares vest, and the stock price climbs further
• Total tax bill across the vesting period: $740,000+

Tax savings: $740,000 in your pocket, not the IRS's.

Even in moderate scenarios — $0.01 grant FMV, shares reaching $1.00 at vesting — the savings run into tens or hundreds of thousands of dollars.

When to File vs. When to Skip

The 83B election is a powerful tool, but it's not always the right choice.

File an 83B election if:

• You received equity at a low grant FMV (under $0.10 per share)
• Your company has strong growth potential or good funding
• You can afford the immediate tax bill
• You're confident you won't leave the company before vesting (or are willing to forfeit)
• The vesting schedule is long (4+ years)

Skip the 83B election if:

• The grant FMV is already high (e.g., $5+ per share)
• The company is well-funded and highly valued already
• You can't afford the upfront tax bill
• You're uncertain about staying with the company (forfeiting vested shares triggers worthless-security deductions, but the math is complex)
• The vesting schedule is very short (1–2 years)

The filing decision is time-sensitive and irreversible. If you're unsure, consult a tax attorney or CPA who works with startups. The 30-day clock is ticking from day one.

Step-by-Step Filing Instructions

Here's exactly what to do:

1. Prepare the letter. The IRS doesn't require a specific form; you file a letter to the IRS stating your election under IRC §83(b). Include:

   • Your name, address, Social Security number
   • Your employer's name, address, and tax ID
   • The date of grant
   • A description of the property (e.g., "1,000,000 shares of common stock")
   • The number of shares
   • The grant FMV (price per share × shares)
   • The vesting schedule
   • A statement: "The undersigned hereby makes an election under IRC §83(b) with respect to the above-described property."
   • Your signature and date (the date you're filing)

2. File with the IRS. Mail the original letter via certified mail with return receipt to the IRS service center for your state. The address is on the IRS website (search "IRS service center addresses"). Include:

   • The letter
   • A cover letter with your SSN and "83(b) Election" in the subject line

3. File with your employer. Within the same 30 days, deliver or mail a copy of your 83B election letter to your company's counsel, HR department, or corporate officer. Email and hand-delivery both count as delivery.

4. Keep your copy. File the original with the IRS, keep a copy for your records, and save the certified mail receipt. Store it with your tax documents for that year.

The entire process takes 1–2 hours. The deadline is non-negotiable. If you receive equity, place the 83B election on your calendar for day 1 and complete it within 2 weeks to avoid missing the window.

Frequently Asked Questions

Do I file the 83B election with my annual tax return? No. You file it directly with the IRS within 30 days of the grant date — not with Form 1040 or any annual return. You do not report the election on your tax return, though your tax basis will reflect the election in future years.

Can I file an 83B election for stock options, or only restricted stock? Technically, the code section covers both. However, the tax benefit is much clearer for restricted stock. Stock options are taxed differently (usually upon exercise or sale, depending on the option type), so consult a tax advisor before filing an 83B for options.

What if the company fails after I've filed an 83B? If the company fails and your shares become worthless, you can claim a capital loss on your tax return. You paid tax on $1,000 (in our example), but your basis is $1,000. If shares are worthless, you have a $1,000 capital loss, which offsets other gains or income. This is far better than paying ordinary-income tax on a $1 million FMV at vesting.

Do I need a lawyer to file an 83B election? Not required, but highly recommended for first-time filers or if equity details are complex. A startup tax attorney or CPA with 83B experience costs $500–$1,500 and is worth every penny to avoid errors that invalidate the election.

Can I amend or withdraw an 83B election after filing? No. The IRS will not accept amendments or withdrawals. Once filed, it is permanent. This is why consulting a professional before filing is important.

Sources

• Internal Revenue Code Section 83(b) — IRC §83(b) Full Text
• IRS Revenue Procedure 2012-29 — Startup equity guidance
• IRS Publication 525: Taxable and Nontaxable Income — IRS.gov Publication 525
• National Association of Stock Plan Professionals (NASPP) — 83B election guidance
• Tax Foundation: Founder Equity Taxation — taxfoundation.org

Ready to calculate your 83B tax savings? Use the 83B Election Tax Savings Calculator to model your equity grant and vesting schedule. Enter your grant FMV, shares, vesting schedule, and expected growth rate — the calculator shows you exactly how much tax you'll save by filing the election.