How restricted stock is taxed (and how 83(b) flips it)

When is restricted stock actually taxed? Whenever one form tells the IRS to tax it. File the 83(b) election in the first 30 days and you pay tax now, on a value that is usually next to nothing. Skip it and the IRS taxes you as the shares vest, on whatever they are worth then. Same shares, two completely different tax lives.

That is the whole story of restricted stock taxation, and most of the pain I see comes from people who never knew the fork existed.

The default: taxed as it vests

Restricted stock is real stock you own at grant, with a catch. It vests over time, and until it vests the company can take the unvested part back if you leave. The tax code calls that a “substantial risk of forfeiture,” which is a long way of saying the shares are not fully yours yet.

Without an election, the tax code waits. Each time a slice vests, the full value of that slice on the vesting date is ordinary income, taxed at your salary rate. Vest into a company that is climbing, and you owe more tax every single year, on shares you often cannot sell to pay for it.

The flip: 83(b) moves the tax to today

The 83(b) election is you telling the IRS to tax you now, on today’s value, instead of later. At a brand-new company that value is often a fraction of a cent per share. You report a trivial amount of income, pay almost nothing, and from that point on every dollar of growth is a capital gain when you sell, not ordinary income as you vest.

So the election does two things at once. It moves the taxable moment from the future to today, and it moves the gain from the ordinary-income bucket to the capital-gains bucket. On near-zero stock, you are buying both of those for the price of a stamp.

The two tax lives, side by side

Tiny ordinary income now, on today’s value. The price you paid plus that small reported value becomes your cost basis. Everything above it is a capital gain at sale, long-term if you hold long enough. You also start the holding clock that matters for QSBS if your stock qualifies.

Nothing at grant, then ordinary income at each vest on that year’s value. Your basis builds up vest by vest, at the higher rate, exactly while the company is worth the most. Anything the stock gains after each vesting date is a capital gain, but the bulk of the value got taxed at the higher ordinary rate on the way up.

The part people miss: the clocks you start

Here is the second-order effect that the simple “save on taxes” pitch leaves out, and it is the real reason founders file. Filing the 83(b) starts your capital-gains holding clock at grant, not at vesting. That early start is what later lets a sale qualify for the lower long-term rate, and it can matter for the five-year clock under QSBS on qualifying founder stock. The election does not just lower your rate. It sets the day the clocks begin.

With a timely 83(b) election, your capital-gains holding clock starts at grant, which is the established rule and the reason an early election can later unlock the long-term rate. The QSBS clock is the separate piece that turns on your facts.

Walk it through

The exact dollar figure depends on where your other income lands you in the 2026 brackets, so the right number is your own marginal rate. The mechanics above hold regardless of which bracket you are in.

The two paths in one example

Numbers make the fork concrete. The share counts and prices below are made up to keep the arithmetic clean. The rates are the confirmed 2026 ones.

Show the math

You join early and get 100,000 restricted shares. At grant the company values its stock at $0.001 a share, so the whole grant is worth $100. Four years later, the day your last slice would vest, the shares are worth $20 each, a $2,000,000 position. To keep it simple, assume the value climbed in a straight line and you sell everything two years after the final vest.

Path A, you file the 83(b). At grant you report $100 of ordinary income. At a high marginal rate that is a tax bill of roughly $37, once. Nothing is taxed as the shares vest. When you sell at $2,000,000, your basis is the $100 you already reported, so your gain is about $1,999,900, all long-term capital gain. At the 20% top rate for 2026 2026 that is roughly $400,000, with the 3.8% net investment income tax possibly on top. Total tax, start to finish, lands near $400,000.

Path B, you skip it. Nothing happens at grant. Then each year a slice vests at that year’s climbing value, and the full value of each slice is ordinary income at up to 37% for 2026 2026. By the later vests you are reporting hundreds of thousands of ordinary income on shares you cannot sell, and the ordinary tax across the four years runs far above the single capital-gains bill in Path A. Only the growth after each vesting date gets the lower capital-gains rate, and that is the smaller slice of the total.

Same company, same $2,000,000, same person. The gap between the two paths is mostly the spread between the 37% ordinary rate and the 20% long-term rate, applied to nearly the whole position, plus the cash-flow pain of owing tax on illiquid stock in Path B. That gap is what one letter, filed in the first 30 days, is worth.

A trap at sale: the basis the broker gets wrong

One more thing that quietly costs people, and it shows up years later at the sale. Your broker often reports your cost basis as $0, or as only what you paid, which on early stock is almost nothing. The real basis is higher: it includes whatever value you already reported as income, either the small amount from your 83(b) at grant or the vesting-date values you were taxed on along the way.

Why does my 1099-B make it look like I owe tax twice?

Because the broker’s reported basis usually leaves out the income you already paid tax on. If you do not correct it on your return, you pay tax a second time on dollars that were already taxed. With an 83(b), the basis is what you paid plus the small value you reported at grant. Without one, the basis is the sum of every vesting-date value you were taxed on. Check the basis on every restricted-stock sale, and keep your 83(b) proof and your vesting records so you can fix it.

What this means for you

The tax treatment of restricted stock is not really about restricted stock. It is about whether you flipped the switch in the first 30 days. For early-stage shares worth almost nothing, filing the 83(b) is usually the highest-leverage tax move you will make all year, and the downside of being wrong is small. For shares already worth real money, the math gets closer and the decision deserves a hard look, which is the 83(b) decision in full. Either way, know which tax life you are living before the window closes, and if the numbers could ever be large, get a fast read while you still have the choice.