Section 83(b) Election: The 30-Day Decision That Shapes How Your Restricted Stock Is Taxed

When founders incorporate, they split the company’s initial stock and place their shares on a four-year vesting schedule. This protects the business, since no one who leaves early keeps a large stake they didn’t earn. However, this arrangement may come with a potential tax trap. If you’re a founder, early employee, or advisor at a startup with equity on a vesting schedule, this decision likely applies to you.

How a Section 83(b) Election Minimizes Tax on Restricted Stock

Section 83 of the U.S. tax law normally treats restricted stock that vests over time as regular earned income. Under the standard rule, each time a new portion of your stock vests and officially becomes yours, the IRS calculates the difference between its value on that vesting day and what you originally paid for it (also known as the grant price), taxing you on that increase at ordinary income rates. At a struggling company, that difference remains small. For growing companies, the stock’s value increases at each milestone, meaning the tax you potentially owe grows larger with every vesting period.

A Section 83(b) election allows you to change this default timeline by asking the IRS to measure and tax all of your stock upfront on the day you receive it, rather than taxing each portion as it vests over time. For brand-new startups, founders buy their stock on day one for its fair market value (often a fraction of a cent), meaning the upfront taxable income is zero and no upfront tax is owed. By filing a Section 83(b) election, you are locking in the value of your stock on day one, and any future growth on the stock is treated and taxed as long-term capital gains, instead of being taxed at high ordinary income tax rates.

Section 83(b) Election Risks and Limitations to Know Before Filing

It’s also important to note what the election does not do. Making this election does not affect your vesting schedule, and it doesn’t protect your unvested stock if you decide to leave the company early. If you paid well below fair market value for stock in a company that’s already valuable, filing the election will trigger an immediate income tax bill, one you’ll have to pay out of pocket.

Timing is critical. You only have 30 days from the date you received the stock to file this election. The IRS is strict about this – there is no grace period. If you decide to mail it in, send it in a way that gives you proof of the date you filed, like certified mail, in case you ever need to show proof that you filed on time.

How to File a Section 83(b) Election

The IRS created a specific form for this, Form 15620, though a written statement that meets the requirements also works. You can submit this online through an IRS Online Account or send it in on paper. Whichever way you choose, you also need to send a copy to your company and hold on to proof that you filed on time.

Keep in mind that once you make this election, it’s generally irrevocable. This is a decision to make on purpose, with a real understanding of the tradeoffs, not something to sign on autopilot.

Key Considerations Before Filing a Section 83(b) Election

There are downsides to consider before filing. If you file the election, pay the tax upfront, and end up losing the shares before they vest (if you leave the company early, for example), you generally cannot get that tax money back or claim it as a loss. There’s also the basic tradeoff that you are paying tax right now, typically out of pocket, on shares that you can’t sell yet. For founders who buy their shares when the company is brand new and the price is very low, there is not much tax at stake, which is why founders make this election early on. But once the company’s shares are worth more, the calculation changes and you have a lot more to consider. How confident are you that you’ll actually vest? Can you afford to front the cash to pay the initial tax? Is the potential benefit worth the risk? There’s no one-size-fits-all rule here.

Another consideration is qualified small business stock or QSBS under Section 1202 – something we will cover in detail later. Filing this election doesn’t automatically make your stock qualify for QSBS benefits. There are entirely different requirements to consider. But if your stock does qualify as QSBS, it starts the clock earlier on the holding period you need to meet to get the QSBS tax benefits. Even if filing Section 83(b) doesn’t create QSBS status by itself, it can help you get those benefits sooner.

Why the Section 83(b) Election Matters for Investors and M&A Due Diligence

Filing the 83(b) election is more than a quick tax trick. Missing the deadline can affect future business deals. When potential investors or buyers evaluate a company during due diligence, they often ask for proof that all founders and early employees filed their 83(b) form on time. If the company cannot produce those records, it signals a major tax risk that can delay the sale, affect the valuation, or ruin the deal altogether.

The takeaway is simple: if you currently hold, or are about to receive, restricted stock that vests over time, you are facing the 83(b) decision with a ticking clock. Consider the benefits and downsides before deciding whether to file. Our emerging growth team can help provide guidance on this decision. It’s best to reach out while you still have time to act.

This article is for general educational purposes only and does not constitute tax, legal, or accounting advice, nor does it create an advisor-client relationship. Tax law changes, and the right answer depends on your specific facts. Consult a qualified tax advisor before making decisions based on anything here.