Strategy Snapshot
Equity compensation is taxed differently depending on the instrument. For restricted stock and early-exercised options, an 83(b) election lets you pay tax now on a small value rather than later on a large one, starting your capital gains clock early. The election must be filed within 30 days, with no exceptions.
It elects to be taxed at grant, when the stock may be worth almost nothing, instead of at vesting, when it may be worth a fortune. Future appreciation then becomes long-term capital gain.
You must file the election with the IRS within 30 days of receiving the stock. Miss it and there is no relief, no extension, and no second chance.
Restricted stock and early-exercised options can use an 83(b). RSUs cannot. ISOs and NSOs are taxed under their own rules, with the AMT being the main ISO trap.
Equity is how startups pay people before they can afford to. It is also where smart, well-advised employees and founders quietly create, or destroy, a large amount of after-tax wealth. The rules are not intuitive, and the single most valuable move, the 83(b) election, comes with a 30-day fuse that, once it burns out, is gone forever.
Pay tax on stock when it is worth nothing, not when it is worth millions. That is the entire point of the 83(b) election.The founder's version in one line
The Core Idea Behind the 83(b)
When you receive stock that vests over time (restricted stock), the default rule taxes you as it vests, on the value at each vesting date, as ordinary income. For a founder whose company grows quickly, that is a disaster: you owe ordinary-income tax, year after year, on a rising value, often without the cash to pay it.
The 83(b) election flips this. You elect to be taxed now, at grant, on the spread between what you paid and what the stock is worth that day. For a founder buying stock at its formation value, that spread is often zero or close to it, so the tax is tiny or nonexistent. From that point forward:
- All future appreciation is capital gain, not ordinary income
- Your long-term holding period starts immediately
- There is no tax at each vesting date
The 30-Day Rule Is Absolute
This is the part that ruins outcomes. The election must be filed with the IRS within 30 days of the stock transfer.
The Risk You Accept
An 83(b) is not free of downside. If you pay tax at grant and then leave before vesting or the company fails, you do not get that tax back. You bet a small, known tax today against a large, uncertain one later. For founders with near-zero grant value, the bet is almost always worth it. For an employee paying real tax on an already-valuable grant, it deserves a closer look.
Knowing Which Instrument You Hold
The 83(b) only applies to some forms of equity. The instrument you were granted determines the entire tax treatment.
| Instrument | Taxed when | 83(b) available? | Main trap |
|---|---|---|---|
| Restricted stock (founder/early grant) | At vesting (default) or grant (with 83(b)) | Yes | Missing the 30-day window |
| Early-exercised options | At exercise | Yes (on the early exercise) | Same 30-day window |
| RSUs | At vesting, as ordinary income | No | Owing tax on illiquid shares |
| ISOs (incentive stock options) | No regular tax at exercise; tax at sale | No (but holding periods matter) | AMT on the bargain element |
| NSOs (non-qualified options) | Ordinary income at exercise | No | Payroll withholding at exercise |
ISOs and the AMT Trap
Incentive stock options are the most misunderstood. Exercising an ISO creates no regular income tax, which feels great, but the bargain element (fair market value minus strike price) is an alternative minimum tax preference item. Exercise a large block of appreciated ISOs and hold them, and you can owe a substantial AMT bill in a year you received no cash.
The reward for navigating it: if you hold the shares more than 2 years from grant and more than 1 year from exercise, the entire gain is long-term capital gain (a “qualifying disposition”). Many people exercise early in the year specifically to manage the AMT exposure across calendar years.
RSUs: Simple, but Watch the Cash
RSUs are the most common grant at larger companies and the simplest to tax: at vesting, the full market value is ordinary income, reported on your W-2. There is nothing to elect. The planning issues are different, the default tax withholding (often a flat 22% supplemental rate) is frequently too low for high earners, leaving a surprise balance due, and concentrated vested stock raises a diversification question that is as much investment strategy as tax.
When to Seek Help
If you are a founder receiving cheap stock, the 83(b) decision is usually clear, but the filing must be done correctly and on time, and that alone is worth a quick professional check given the stakes. Get real planning help when you hold ISOs and are facing AMT, when large RSU tranches are vesting, or when you are weighing an early exercise ahead of a financing round. These decisions are time-sensitive and one-directional, and the cost of getting the timing wrong dwarfs the cost of advice.
Last updated: 2026