

tldr: The way you approach taxes on your equity can have dramatic effects on how much of your compensation you get to keep. Each of the main types of equity compensation: Restricted Stock Awards, RSUs, and Stock Options (ISOs and NQSOs) have different rules about when and which taxes you have to pay.
Disclaimer: This is not legal or tax advice. Consult your own professionals before making any decisions.
With tax season looming, tax rules affecting equity compensation hit close to home.
When it comes to taxing equity, 3 considerations determine what you owe:
Before we dig into the way that taxes work for each type of equity, let’s review the types of taxes relevant to equity compensation
To better understand how these tax brackets work, see the following examples:
Note: These determinations are based on the IRS Federal Guidelines for 2021. For more information, see here.
As is demonstrated, one’s capital gains tax rate is almost always lower than their ordinary income tax (short-term capital gains rate).
There’s one more concept to understand, the 83(b) election — a provision under the federal revenue code that allows stock recipients to pay taxes on the fair market value (FMV) of restricted stock when granted, rather than when it is sold. This means that individuals whose stock value increases over time will pay less in taxes (fair market value of the stock at present is less than at future).
The 83(b) election does come with its downfalls. For one, the election is irrevocable. That means that once you’ve decided to pursue the election, you owe the taxes, regardless of the actual outcome of the stock value. If, for example, you choose the 83(b) election on restricted stock awards that decrease in value, you will have paid more taxes than you would have without the election. Additionally, you should be aware of the termination policy around your equity - if for example, you leave the company after choosing the 83(b) election, but before your stock fully vests, you might not ever actually own the stock but will have paid taxes on it anyway.
If this feels a bit confusing, don't worry. Below we will elaborate on each type of equity
Say you are granted 100 shares of restricted stock awards on April 1st, 2021, worth $15 per share and vests over 4 years. Once it’s vested it’s worth $25 per share.
Note: This scenario - which we will use throughout the following examples - assumes the company will grow overtime
For this example, we will assume you are in the 35% Ordinary Income Tax bracket and 15% Long-Term Capital Gains Tax bracket
You have two options:
1. Take the 83(b) election
At Grant: By taking the 83(b) election you’ll owe ordinary income tax on the purchase, $15 x 100 = $1,500 x 35% = $525
At Vest: None
2. Don’t take the 83(b) election
At Grant: None
At Vest: Without the 83(b), you’ll owe ordinary income tax on the fair market value at vest, $25 x 100 = $2500 x 35% = $875
The taxes on the sale of Restricted Stock Awards are the same regardless of whether an 83(b) election was made:
When it comes to Restricted Stock Units, taxes are approached differently depending on whether the company is public or private.
Because with RSUs there is no actual stock issues at grant, there is not a Section 83(b) election opportunity.
Let’s look at the same example from last time - 100 shares of RSUs on April 1st, 2021 that vest over 4 years, first vesting date (April 1st, 2022).
For this example, we will assume you are in the 35% Ordinary Income Tax bracket and 15% Long-Term Capital Gains Tax bracket
At Vest: Each portion of vested shares is taxable on its vesting date as ordinary income when the shares are delivered
You’ll owe ordinary income tax on the shares, total = ($625 + $675 + $850 + $850) $3,000 x 35% = $1,050
At Sale: Depending on how long you hold your shares, there are different taxing protocols
Similar to a public company, RSU shares are delivered once they vest. However, for a private company RSUs have “double-trigger” vesting, meaning that two events are requires before the employee owns the shares:
Thus, shares in a private company don’t vest just at the time-based vest (first trigger), they are delivered at the first liquidity event or change in control (double trigger).
Taxes are calculated based on the fair market value of the stock at the time of the first liquidity event.
Note: This is often higher than the value of the shares at the time-based vesting (i.e. 100 shares of RSUs that vest over 4 years. At year 1 = $8, year 2 = $8, year 3 = $8, year 4 = $9. The company goes public at $14/share. You will be taxed on the shares at the double-trigger vest price of $14/share)
At Exercise: Taxed as regular income, not eligible for the 83(b) election. Taxes are based on the spread between the stock's Fair Market Value when it is purchased (market rate) and the exercise price (or strike price).
At Sale:
Recall that the Alternative Minimum Tax (AMT) is often applied to ISOs. This comes in the AMT adjustment, applied to the bargain element, or the difference between the exercise price and market price on the day you exercised your options and purchased the stock.
Say you are granted the option to purchase 100 shares of stock on April 1st, 2021 at the strike price of $25. The shares vests over 4 years.
Let’s go through some potential taxing scenarios based on this opportunity:
To review ISOs:
At Exercise: No tax liabilities are owed for holders of ISOs at the time of exercise.
At Sale: