The 83(b) Election: How It Works and When to File

An 83(b) election is a short written choice that tells the IRS to tax your restricted stock now, at grant, rather than later as it vests. The default rule under Section 83 of the tax code taxes you as the stock vests, on the fair market value at each vesting date minus whatever you paid for the shares. The 83(b) election flips that to grant date value instead, which for early stage stock is usually a tiny number or zero. The grant versus vest mechanic is laid out in IRS Publication 525, which covers taxable and nontaxable income including restricted property.

The people who need an 83(b) election are founders and early employees who receive a restricted stock award, or who early exercise unvested options. For a founder who pays full value for penny stock at incorporation, the election triggers no tax at all, because the spread between what was paid and the grant date value is zero, and it converts every dollar of future appreciation into capital gain rather than ordinary wage income. If the founder holds long enough, that gain is taxed at the long term capital gain rates described in IRS Topic 409. That is the ideal scenario, and it is why nearly every founder files one within 30 days of incorporation as a matter of routine.

Take a concrete case with real dollars and dates. An early hire receives 100,000 shares worth one cent each on March 3, 2026. She files the 83(b) election within 30 days and reports 1,000 dollars of ordinary income now, which at a high bracket costs a few hundred dollars of tax. Four years later, on March 3, 2030, the shares vest while the company is worth 15 dollars per share. With the election, the entire 1,499,000 dollars of appreciation is capital gain when she eventually sells, and long term capital gain if she holds past the one year mark. Without the election, that 1,499,000 dollars would have been taxed as ordinary wage income as the shares vested, plus payroll tax, the result spelled out in Publication 525. The difference is a few hundred dollars of tax against a six figure tax bill.

Now the people who do not need one. Anyone holding standard restricted stock units cannot file, because units are not eligible property at grant, a point covered below. And anyone whose grant date value is already high should think hard, because the election means paying real cash tax today on stock that cannot be sold. The common mistake is a late stage employee filing an 83(b) on a grant that already carries meaningful value, writing a large check on a forfeitable and illiquid asset for no clear benefit. The edge case is the founder who forgets to file at incorporation and only realizes months later, when the 30 day window has already closed and the chance is gone for good. There is no second chance and no relief for a missed filing here, so the cost of forgetting is the entire difference between capital gain and ordinary income on every future dollar of appreciation, which on a successful company runs into real money. This is one of the rare tax moves where the right answer is usually obvious and the only thing standing between you and it is the calendar. We walk every equity holding client through whether the election fits, and we run the grant versus vest numbers, before the 30 day window closes, through our tax strategy consulting service. If you just signed a grant, reach us at our new client inquiry page right away, because the clock is already running.

The 83(b) election deadline is 30 days after the stock is transferred to you, and there is no extension. None at all. The transfer date counts as day zero, and you have 30 calendar days from there. This is not 30 business days and it is not a calendar month. There is no reasonable cause relief, no late filing fix, and no way to undo a missed deadline. If you blow past day 30, the election is gone and you are taxed at vest under the default Section 83 rule. The one narrow grace is that if day 30 falls on a Saturday, Sunday, or legal holiday, a filing postmarked the next business day is still timely. The IRS standardized the election itself on Form 15620 so there is no excuse for guessing what the statement must contain.

Filing is simple once you accept how unforgiving the clock is. You can mail a signed statement containing your name, address, taxpayer identification number, a description of the shares, the date of transfer, the fair market value at transfer, the amount you paid, and a clear statement that you are making an election under Section 83(b). Or you can fill out Form 15620, the standardized election form the IRS released to remove the guesswork about what to include. Either way, you mail it to the IRS Service Center where you file your federal income tax return, the location confirmed on the IRS page on where to file certain elections, and you give a copy to your employer.

Walk through a real timeline. Say your restricted shares are transferred to you on April 10, 2026. Day zero is April 10, so day 30 is May 10, 2026. May 10, 2026 happens to fall on a Sunday, so your filing is timely if it is postmarked Monday, May 11, 2026. Do not lean on that grace. Treat the deadline as if it were day 25, get the statement signed early, and mail it with time to spare. The postmark is what counts, not the date the IRS opens the envelope. A founder who drops the envelope in a mailbox on the evening of day 30 has met the deadline even though the IRS will not log it for another week, but a founder who hands it to a private courier should confirm the service produces a dated record that the IRS will accept as proof of timely mailing.

A few practical points trip people up. Since a 2016 regulation change, you no longer attach a copy of the 83(b) election to your tax return. Mailing it to the Service Center within 30 days is the filing itself. Send it by certified mail with return receipt requested and keep the receipt, because the postmark date is your only proof you met the deadline. The common mistake is assuming you can file electronically at the last minute. This is a paper and mail process, so a founder who waits until day 29 and discovers the post office is closed has no electronic fallback. The edge case to plan for is a remote or international founder who needs extra mailing time, where day 25 is already cutting it close and the statement should go out earlier still. A founder traveling abroad when the shares transfer cannot rely on filing the moment they return, because the 30 days run regardless of where they are, so the statement should be signed and mailed before any travel rather than after. Keep a scanned copy of the signed election, the certified mail receipt, and the green return card together in one place, because if the IRS ever questions the filing those three documents are the entire proof you have. We prepare and document the election so the timing is airtight through our tax strategy consulting service. If your grant date is approaching, contact us at our new client inquiry page before the window narrows.

You cannot make an 83(b) election for a restricted stock unit. This is the most common and most expensive misunderstanding in equity compensation, so it is worth being blunt about. A restricted stock unit is a promise to deliver shares in the future, not a transfer of shares today. Because no property changes hands at grant, there is nothing for Section 83 to attach to, and therefore nothing to elect on. The IRS equity based compensation guidance in Publication 5992 states directly that an 83(b) election cannot be made for a restricted stock unit.

So what is eligible? The 83(b) election works for restricted stock awards, where you receive actual shares at grant subject to vesting and forfeiture. That is a real transfer of property under Section 83, so the election applies. It also works for shares you receive when you early exercise unvested options, because exercising turns the option into actual restricted stock in your hands. In both cases there are real shares, subject to forfeiture, which is exactly what Section 83 requires before an election is even possible. A plain option grant, by contrast, has no readily ascertainable value and is not property when granted, so there is nothing to elect on until you exercise, a point the IRS covers in Topic 427 on stock options.

Why does this distinction trip so many people up? Because restricted stock awards and restricted stock units sound almost identical and people use the terms loosely in conversation. The difference is a single word that decides whether the election is even possible. Take a worked example. An award holder receives 50,000 actual shares on June 1, 2026 worth two cents each. She can file the 83(b) within 30 days, report 1,000 dollars of income, and lock in grant date value. A unit holder granted 50,000 units on the same day owns nothing yet. He cannot file anything, and when the units settle into shares three years later at, say, 12 dollars each, he is taxed on 600,000 dollars of ordinary wage income on his Form W-2, with no early election option that could have changed it. The award holder controlled her tax outcome by acting within 30 days. The unit holder never had that lever at all, because the law simply does not offer it for a promise to deliver shares, and no amount of paperwork can manufacture an election where there was no property transfer to begin with.

The common mistake is an employee who hears 83(b) from a colleague, assumes it applies, and mails an election on units that are not eligible, wasting the postage and creating a confusing record. The opposite and far costlier mistake is an award holder who assumes the election does not matter and misses a genuinely valuable filing. The edge case is the grant document that uses sloppy language. Read the actual agreement, because the words restricted stock award or restricted stock unit control the answer, not whatever the offer letter called it casually. A second edge case is the early exercise right buried in an option plan, which converts an otherwise ineligible option into eligible restricted stock the moment you exercise, opening an 83(b) window that did not exist at grant. Founders who skim their plan documents miss both of these, either filing a useless election on units or overlooking a valuable one on early exercised shares. We read the grant document for clients and tell them exactly which path applies through our tax strategy consulting service, and we report the income correctly later through individual tax return preparation. If you are unsure which one you hold, send us the grant at our new client inquiry page.

You lose the tax you prepaid, and you do not get it back. This is the hard edge of the 83(b) election and the reason it is a genuine bet rather than a free option. When you file the election, you pay ordinary income tax at grant on the value of the stock above what you paid. If you then leave before vesting and forfeit the shares, or the company fails and the stock becomes worthless, IRS Publication 525 denies you any deduction or refund for that prepaid tax. The income you reported is treated as final, even though you never actually kept the shares. There is no mechanism to claw it back from the government.

Work through the downside with numbers and dates. Suppose you file an 83(b) election on a grant dated February 1, 2026 where the spread at grant was 50,000 dollars, so you paid roughly 18,500 dollars in tax up front at a high bracket. Two years later, on February 1, 2028, you leave the company before your shares vest and forfeit them. That 18,500 dollars is gone. You cannot deduct it, you cannot recover it, and you have nothing to show for it. The only loss you can claim is a capital loss for whatever you actually paid to acquire the shares, never for the tax you paid on income that evaporated. If you paid 5,000 dollars for the shares, you have a 5,000 dollar capital loss and an 18,500 dollar lesson.

This is exactly why the election is an easy call for penny value founder stock and a careful judgment call for anything carrying real value at grant. When the grant date value is a few hundred or a few thousand dollars, the prepaid tax is small and the forfeiture risk barely matters against the upside. When the grant date spread is large, you are writing a real check on a forfeitable and illiquid asset, and a departure or a failed company turns that check into a pure loss. There is also a liquidity dimension. The tax is due in cash now even though you cannot sell the shares to pay it, so the election can create a cash crunch entirely separate from the forfeiture risk.

The common mistake is filing on a meaningful spread without honestly weighing the odds of staying through vesting. People anchor on the upside story and skip the downside math entirely. The opposite mistake, for low value founder stock, is overthinking a decision that is nearly free and missing the 30 day window while deliberating. The edge case is the founder with a large grant date value who is highly confident in both the company and their own tenure. There the election can still make sense, but only after sizing the real cash at risk if the bet goes wrong. A useful way to frame it is to ask what you would lose if you forfeited the shares the day after filing. If that number is a rounding error, file without hesitation. If it would genuinely hurt, the decision deserves a real model rather than a gut call, because once the 30 days pass the choice cannot be reversed in either direction. Our approach is to size the downside before filing. We ask how likely you are to stay through vesting, how confident you are in the company, and whether you have the cash to pay tax on stock you cannot sell. For low value founder stock the answer is almost always to file. For higher value grants we run the forfeiture scenario explicitly, because the decision is irreversible once the 30 days pass. That modeling is part of our tax strategy consulting work. Bring your grant to our new client inquiry page before you decide.

The 83(b) election matters for incentive stock options only when you early exercise, and in that situation it can save you a large alternative minimum tax bill. Here is the chain. The bargain element on an incentive stock option, meaning the fair market value at exercise minus your strike price, is a preference item for the alternative minimum tax and shows up on Form 6251. For unvested options you early exercise, the question is when that bargain element gets measured, at exercise when the stock is cheap, or later at vesting when it may be worth far more.

Filing an 83(b) election within 30 days of an early exercise fixes the alternative minimum tax measurement date at exercise. The spread is locked in at the early, low value, so the preference is small or zero. Do this while the company is still cheap and you can exercise a block of incentive stock options with little or no alternative minimum tax exposure, then watch the appreciation grow as capital gain rather than as a future tax problem. Skip the election on an early exercise and the same shares can generate a much larger preference when they vest at a higher value. The employer documents the exercise on Form 3921, which carries the details you need to compute the preference.

A worked example shows the point with dollars and dates. You early exercise incentive stock options on May 1, 2026 when the fair market value of 7 dollars equals your strike price of 7 dollars, so the bargain element is zero. You file the 83(b) election within 30 days and the preference is measured at that moment, which is zero, meaning no alternative minimum tax from the exercise. Without the election, if vesting occurs on May 1, 2028 when the stock has climbed to 19 dollars over the same 7 dollar strike, you could be staring at a 12 dollar per share preference at vest. Across a 40,000 share block, that is a 480,000 dollar preference appearing on Form 6251, which can drive a serious alternative minimum tax bill in a year when you have no liquidity to pay it.

The common mistake is early exercising incentive stock options and then forgetting the 83(b) election, which throws away the entire benefit and leaves the preference floating out to vest. The exercise and the election are really one decision on a 30 day clock, and doing the first without the second is often worse than not early exercising at all, because you have paid cash to exercise and still left the preference floating out to a higher future value. Another frequent error is forgetting that the election fixes the measurement date but does not by itself eliminate the alternative minimum tax in every case, so a large early exercise can still generate a preference if the fair market value already sits above the strike price at the moment of exercise. The edge case is the year by year uncertainty in whether you actually owe the alternative minimum tax, because the exemption amounts and phaseouts change with annual inflation adjustments, and the 2026 figures are still being confirmed against the inflation procedures. We run your real Form 6251 rather than relying on a rule of thumb, and we coordinate the early exercise 83(b) election with the alternative minimum tax projection together through our tax strategy consulting service. When you later sell, we report it correctly and fix any broker basis errors through our individual tax return preparation. If you are weighing an early exercise, start the analysis at our new client inquiry page before the 30 day window closes.