The 83(b) Election: Thirty Days That Can Change Your Tax Bill

Key takeaways

Without the election, restricted stock is taxed as ordinary income at each vesting date on its value then; with it, the tax is paid once at grant on the value then, and all later growth is capital gain.
The election makes sense when the current value is low, the expected growth is high, and the cash to pay the tax at grant is available.
The 30-day deadline runs from the transfer date, is postmark-based, and has no extension or late relief.
RSUs cannot use it; restricted stock awards and early-exercised options can, and founders' stock almost always should.

Section 83(b) is one subsection of the tax code, and for founders and early employees it decides whether their equity gets taxed once at a small number or over and over at large ones. The election is simple to make and easy to miss. We've seen the miss turn into the single biggest tax outcome of someone's career, in the wrong direction. So let's walk through what it does, who it's for, and how not to blow the deadline.

The default rule

Under Section 83(a), property you receive for services (restricted stock that vests over time, say) is taxed when it's no longer subject to a substantial risk of forfeiture. In English: when it vests. At each vesting date, the fair market value of the shares that just vested, less anything you paid for them, is ordinary compensation income. Your capital gains holding period starts at vesting, not before.

Picture a founder who receives 1,000,000 shares at a $0.001 par value, vesting over four years. Under the default rule, that's income at every vest at whatever the shares happen to be worth that day. If the company raises money and the shares are worth $2 at the first vest and $10 at the last, the founder recognizes millions of dollars of ordinary income on stock they can't sell. And the tax is due in cash.

What the election does

An 83(b) election tells the IRS to tax the stock now, at grant, as if it were already fully vested. The income is the value at grant less the amount paid. For founders' stock bought at fair market value at formation, that's zero. No income, no tax. The holding period starts at grant. Everything after that is capital gain, recognized only when you sell, and if the shares qualify as QSBS, potentially excluded entirely after five years, with the five-year clock starting at grant rather than at each vest.

The trade is certainty for optionality. You pay tax (often none) on a value you might never realize, and you give up the ability to pay nothing if the stock is forfeited before it vests. If you leave and the unvested shares are repurchased at cost, the tax you paid on the election isn't refundable. In practice the loss is usually zero, though, because the price paid equaled the value at grant.

Who should make it

Founders. Nearly always. The value at formation is nominal, the tax is zero or trivial, and the upside from starting the holding periods and turning all future growth into capital gain is enormous. We've never seen a good reason for a founder at formation to skip it.

Early employees with restricted stock awards. Usually, as long as the spread between value and price paid is small enough that the tax is affordable. As the company matures and the value at grant climbs, the election starts costing real money, and the decision becomes a bet on future growth against tax paid today.

Early-exercised options. Some companies let employees exercise options before they vest. The shares you get are restricted stock, and an 83(b) election taxes the spread at exercise (often near zero if you exercise right after grant) instead of at each vest. For ISOs, the election also locks in the AMT preference amount at the early exercise date. This is the most common 83(b) situation for people who aren't founders.

Not RSUs. Restricted stock units are a promise to deliver shares later, not property transferred now, so there's nothing to elect on. The RSU rules are a different animal.

When it's the wrong call

The election is wrong when the current value is already high relative to what you paid, so the tax at grant is large, and the outcome is uncertain enough that paying it now is a gamble your household can't afford to lose. Say a late-stage employee is granted restricted stock at a $40 value with nothing paid. That's $40 a share of income immediately, with no market to sell into and no refund if the company fails. There, the default rule (tax at vest) is usually the better answer, and you accept ordinary income treatment as the price of not prepaying.

It's also wrong, in a narrow sense, for anyone who can't get it filed within 30 days.

The mechanics

This is the boring part, and it's the part that goes wrong. The election is a short statement filed with the IRS service center where you file your returns, within 30 days of the date the stock is transferred. The IRS provides a sample form in Revenue Procedure 2012-29 and now accepts a fillable Form 15620. The deadline is measured by postmark. Certified mail with a return receipt is the standard, and a copy goes to the company. Since 2016 you no longer have to attach a copy to your tax return, but keep proof of filing forever, because the IRS won't confirm receipt.

There's no extension and no relief for a late election. Thirty days means thirty days from transfer, which for founders is the incorporation and stock purchase date, not the date they first think about taxes. Counsel forming the company usually handles it. Employees early-exercising options often have to handle it themselves, and company equity portals don't always make the deadline obvious. Which, yes, is a problem.

Where we come in

For clients with startup equity, the 83(b) decision is the first item on the startup equity checklist, because it has to be made in the first month and it sets the tax character of everything that follows. We model the tax at grant, the cash to pay it, the probability-weighted outcomes, and the effect on the QSBS clock, and then we make sure the filing actually happens. It's a small piece of equity compensation planning with an outsized effect.

Frequently asked questions

What if I paid full value for the shares?

Then the election reports zero income and costs nothing, and there's no reason not to make it. This is the founder case.

Can I revoke it?

Only with IRS consent, and only for a mistake of fact, not a change of mind or a drop in value. Treat it as permanent.

What happens if I never sell the shares?

Nothing further. The election's job was to recognize income at grant. The appreciation stays untaxed until sale, and at death the shares receive a step-up in basis.

Does the company report the income?

For employees, the income recognized on the election is wages, reported on the W-2 for that year with withholding due. For founders who paid fair value, there's no income to report.

Joseph G. Valerio, CFP®, EAFounder and Lead Advisor at Valerio Wealth Management, a fee-only, fiduciary virtual family office in Miami, Florida. One advisor, credentialed in both financial planning and federal tax. About Joseph

This article is general education, not individualized advice, and it is not tax, legal, or accounting advice. Figures reflect federal law for the year stated and can change. Valerio Wealth Management does not prepare or file tax returns. Speak with a qualified professional about your own situation before acting.