When does the 30-day clock start?

The 30-day period starts from your grant date—the date you receive the restricted stock, NOT when you sign documents or when the company was incorporated. Calendar days, not business days.

How do I file an 83(b) election?

Prepare the election letter (templates widely available), sign it, send it via certified mail to the IRS within 30 days, send a copy to your company, and keep a copy with your records. Some people also fax a copy for backup.

What if I miss the deadline?

There is no remedy. You cannot file late, and there are no exceptions. You'll be taxed at ordinary income rates as your shares vest over time, potentially at much higher valuations.

Should I file if my shares might be worthless?

Usually yes, if the upfront tax cost is minimal. The risk is that if you forfeit the shares (leave before vesting), you don't get your tax payment back. But for early-stage shares worth fractions of a penny, the downside is tiny compared to the upside.

Does this apply to stock options?

Not directly. 83(b) applies to restricted stock. However, if you early exercise your options (buy shares before they vest), you receive restricted stock and CAN file an 83(b) on those shares.

83(b) Election Guide: Save Thousands on Startup Equity Taxes

What Is an 83(b) Election?

An 83(b) election is a letter you send to the IRS that can save you tens of thousands—or even millions—of dollars in taxes. It's one of the most important yet frequently overlooked tax strategies for startup founders receiving equity.

Named after Section 83(b) of the Internal Revenue Code, this election allows you to pay taxes on your stock at the time of grant rather than when it vests. For founders receiving stock at pennies per share, this seemingly small decision can have massive financial implications as your company grows.

Here's the critical part: you have exactly 30 days from receiving your stock to file. Miss this deadline, and there's no extension, no exception, and no way to fix it.

Why the 83(b) Election Matters

To understand why this election is so important, you need to understand how the IRS normally taxes restricted stock.

Without an 83(b) election, you're taxed on your stock as it vests—and you're taxed on the fair market value at the time of vesting. If you're a founder who received stock at $0.001 per share, and three years later when a portion vests the stock is worth $10 per share, you owe ordinary income tax on that $9.999 gain per share.

The math gets ugly fast. Let's say you have 1 million shares vesting over four years. By year three, your company has raised a Series A and the stock is now valued at $5 per share. When 250,000 shares vest, you owe ordinary income tax on $1.25 million of "income"—even though you haven't sold a single share. You have a tax bill with no cash to pay it.

With an 83(b) election, you pay taxes upfront on the stock's value at grant. If you received that stock when it was worth $0.001 per share, you pay taxes on $1,000 total. When the stock vests years later at $5 per share, you owe nothing additional. When you eventually sell, you pay long-term capital gains (typically 20%) instead of ordinary income (up to 37%).

Key Terms You Need to Know

Restricted Stock

Stock that is subject to vesting or other restrictions. Until restrictions lapse, the company can typically repurchase unvested shares if you leave. An 83(b) election applies to restricted stock, not stock options.

Fair Market Value (FMV)

What a willing buyer would pay a willing seller for the stock. At formation, this is typically the par value (often $0.0001 to $0.001 per share). After funding rounds, FMV increases based on the company's 409A valuation.

Vesting

The process by which you earn the right to keep your stock over time. Standard founder vesting is four years with a one-year cliff. Without an 83(b), you're taxed each time stock vests.

Ordinary Income vs. Capital Gains

Ordinary income is taxed at your regular rate (up to 37% federal). Long-term capital gains are taxed at preferential rates (0%, 15%, or 20%). The 83(b) election can convert what would be ordinary income into capital gains.

Substantial Risk of Forfeiture

The legal term for restrictions on your stock that could cause you to lose it. Vesting schedules create this risk, which is why unvested stock isn't normally taxed until it vests.

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

Step 1: Prepare the Election Letter

Your election must include specific information: your name, address, Social Security number, the tax year, a description of the property, the date transferred, the fair market value at transfer, the amount paid, and a statement that you're making the election under Section 83(b).

Step 2: Sign and Date

Both you and your spouse (if filing jointly and in a community property state) must sign. Keep the original for your records.

Step 3: Mail to the IRS Within 30 Days

Send the signed election via certified mail with return receipt requested to the IRS Service Center where you file your return. The postmark must be within 30 days of the stock grant date—not 30 business days, 30 calendar days.

Step 4: Send a Copy to Your Company

Provide a copy to the company that granted you the stock. They'll need it for their records.

Step 5: Attach to Your Tax Return

When you file your taxes for the year you received the stock, attach a copy of the 83(b) election.

Real-World Example

Sarah and Mike co-found a startup. Each receives 2 million shares of restricted stock at $0.001 per share ($2,000 value) with four-year vesting.

Sarah files an 83(b) election. She pays ordinary income tax on $2,000 (roughly $740 at a 37% rate). Three years later, the company is acquired for $20 per share. Her 1.5 million vested shares are worth $30 million. She pays long-term capital gains tax of approximately 20%, or $6 million.

Mike doesn't file an 83(b) election. He owes nothing upfront. But as his stock vests, he owes ordinary income tax on the increasing value. By the time of acquisition, he's paid ordinary income tax on his vesting shares—approximately $11 million at 37%. The difference? Mike paid nearly $5 million more in taxes than Sarah because he missed a simple filing.

Common Mistakes to Avoid

Missing the 30-Day Deadline

This is the most common and most costly mistake. The deadline is absolute. Set multiple calendar reminders, and file within the first week to be safe. Many founders recommend filing within 48 hours of receiving restricted stock.

Confusing Stock Options with Restricted Stock

The 83(b) election applies to restricted stock, not standard stock options. If you're exercising options early (before vesting), you can file an 83(b). If you have options you haven't exercised, this election doesn't apply yet.

Not Keeping Proof of Filing

Always use certified mail with return receipt. The IRS doesn't acknowledge 83(b) elections, so your certified mail receipt is your only proof. Keep it forever.

Forgetting the Spouse Signature

In community property states (California, Texas, Washington, and others), your spouse must also sign the election if you file joint tax returns.

Not Understanding the Risk

If you file an 83(b) and then forfeit your stock (you leave before vesting), you don't get a refund on the taxes you paid. You paid taxes on stock you never received. For founders receiving stock at pennies per share, this risk is minimal. For executives paying meaningful amounts for stock, consider carefully.

When NOT to File an 83(b) Election

The 83(b) election isn't always the right choice:

When the stock has significant value and you might leave. If you're paying $50,000 in taxes upfront on stock that might be forfeited, you're taking a real risk.

When you don't have cash for the tax bill. Even at low valuations, large stock grants can create meaningful tax obligations. Make sure you can pay.

When you have incentive stock options (ISOs). ISOs have their own tax treatment. An 83(b) election on early-exercised ISOs converts them to non-qualified options for tax purposes. Consult a tax advisor.

Actionable Advice for Founders

File Immediately

Don't wait. The moment you receive restricted stock, prepare and mail your 83(b) election. Many law firms handling incorporations now include 83(b) filing as part of their standard package—ask for it.

Create a System

If you're issuing restricted stock to co-founders or early employees, create a system to ensure everyone files. Some companies won't release stock certificates until they receive a copy of the signed 83(b) election.

Document Everything

Keep copies of your election, certified mail receipt, and any correspondence. Store them somewhere you won't lose them—you may need proof a decade later during an acquisition.

Work with a Tax Professional

While the 83(b) election itself is straightforward, the tax implications can be complex. A startup-savvy CPA or tax attorney can help you understand your specific situation and ensure compliance.

Understand Your Stock Agreement

Read your restricted stock purchase agreement carefully. Understand your vesting schedule, what happens if you leave, and any repurchase rights the company has. The 83(b) election is just one piece of your equity compensation picture.

Frequently Asked Questions

Can I file an 83(b) election late?

No. The 30-day deadline is absolute. There are no extensions, no exceptions, and no private letter rulings that will save you. File on time or lose the opportunity forever.

What if my stock is worth nothing?

File anyway. If your stock is worth $0.001 per share, your tax bill is negligible. But if the company succeeds, you've locked in that low valuation for tax purposes.

Do I need to file for each stock grant?

Yes. Each time you receive restricted stock, you need a separate 83(b) election filed within 30 days of that specific grant.

What if I'm a non-US person?

The 83(b) election is part of US tax law. Non-US persons may still benefit if they have US tax obligations. Consult an international tax specialist.

The Bottom Line

The 83(b) election is one of the few times in life you can legally and dramatically reduce your tax burden with a single piece of paper. For startup founders receiving restricted stock at low valuations, filing is almost always the right choice.

The cost of filing is minimal—just the time to prepare the letter and the price of certified postage. The cost of not filing can be millions of dollars in additional taxes. Don't let a simple administrative oversight cost you a fortune.

File your 83(b) election within 30 days of receiving restricted stock. No exceptions, no excuses. Your future self will thank you.