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March 18, 2026

The 83(b) Election: The $100 Form That Can Save You Millions

The 83(b) Election: The $100 Form That Can Save You Millions

If you receive restricted stock at an early-stage startup, you have exactly 30 days to make one of the most important tax decisions of your career. Miss the deadline, and there is no appeal, no extension, no do-over.

What is an 83(b) election?

When you receive restricted stock (actual shares that are subject to vesting), the IRS gives you a choice:

Option A (Default — no 83(b)): Pay taxes on the value of shares as they vest. If you receive shares at $0.001 but they are worth $5.00 when they vest two years later, you owe ordinary income tax on $5.00/share at vesting. Option B (File 83(b) within 30 days): Pay taxes on the value of shares RIGHT NOW, at the time of receipt. If shares are worth $0.001 today, you pay tax on $0.001/share. All future appreciation is taxed as long-term capital gains when you sell.

The math that matters

Let's say you're a co-founder receiving 1,000,000 shares at $0.001/share:

Without 83(b): Over 4 years of vesting, shares grow to $10/share. You owe ordinary income tax (37% bracket) on $10M = $3.7M in taxes, owed as shares vest. You have no cash to pay this. With 83(b): You pay income tax on $1,000 today = roughly $370 in taxes. When you sell at $10/share, you pay long-term capital gains (20%) on $9,999,000 = $2M in taxes.

The 83(b) election saved $1.7 million in this scenario.

The 30-day rule is absolute

The IRS is extremely strict about this deadline. Day 31? Too late. Your accountant was on vacation? Too late. You didn't know the election existed? Too late.

Here is what you need to do:

  • File IRS Form 83(b) with the IRS within 30 days of receiving the stock
  • Send a copy to your employer
  • Keep a copy with your tax records
  • Attach a copy to your tax return for that year

    • When 83(b) does NOT make sense

    The 83(b) election is not always the right move:

  • If the shares have significant value already: Paying taxes on $500,000 worth of stock when you have no guarantee the company will succeed is a real risk. If the company fails, you cannot reclaim the taxes you paid.
  • If you cannot afford the tax bill: Even at low values, the tax is real money. Make sure you can cover it.
  • If you have RSUs, not restricted stock: 83(b) elections apply to restricted stock only. You cannot file 83(b) for RSUs.

    • The bottom line

    If you receive restricted stock at a startup where the FMV is very low (under $1/share), filing an 83(b) election is almost always the right move. The downside is small (losing the tax paid if the company fails), and the upside can be life-changing.

    Talk to a tax advisor. But do it within 30 days.

    This is educational content, not tax advice. Consult a qualified tax professional for your specific situation.

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