What it means
An RSU grant sets out a number of units and a vesting schedule, commonly four years with a one-year cliff. Nothing of value changes hands on the grant date itself, and value only appears as each tranche vests.
Unlike stock options, RSUs carry no exercise price, so they keep some worth even if the share price falls. That makes them lower risk for employees and much easier to explain, which is why many companies shifted away from options after the 2008 downturn.
Tax is the part people get wrong most often. At vesting, the market value of the shares is treated as employment income and taxed at income tax rates whether or not you sell, and any later gain or loss is a separate capital gains question.
Employers commonly withhold shares to settle the tax bill, an arrangement known as sell to cover or net settlement. If 1,000 units vest, you may see only around 600 shares actually arrive, with the remainder sold or withheld to meet the deduction.
For the company, RSUs create an expense measured at grant date fair value and spread across the vesting period. They also dilute existing shareholders, which is why boards monitor total equity pay as a percentage of shares outstanding.
In practice
Real-world examples.
Example
A data engineer joins a listed technology firm with a $60,000 RSU grant vesting over four years. She receives nothing in year one until the cliff passes, then a quarter of the grant lands, and she immediately sells half to fund a house deposit while keeping the rest.
Example
A retail group grants RSUs to store managers with a performance condition attached to group operating profit. When profit falls short of the threshold, only 60% of the units vest, and the company reverses part of the expense it had accrued.
Example
A finance manager at a private company receives RSUs that vest on time served but only convert to shares on a liquidity event such as a sale or listing. Six years pass with no event, so the units remain unconverted and generate no tax charge.
Think of it
“RSUs are promises of company stock that you receive when conditions are met-usually staying employed.
Formula
Calculation
Employee income at vesting = shares vesting x market price on the vesting date.
Company expense per year = units granted x grant date fair value / vesting years.
An employee is granted 4,000 RSUs that vest 25% a year over four years, when the share price is $24. On the first vesting date, 4,000 x 25% = 1,000 units vest and the share price is $30, so taxable income = 1,000 x $30 = $30,000. At a combined tax and social contribution rate of 40%, the deduction is $30,000 x 0.40 = $12,000, which the employer settles by selling $12,000 / $30 = 400 shares. The employee keeps 1,000 - 400 = 600 shares, worth 600 x $30 = $18,000, with a cost base of $30 each for future capital gains. The company records a share-based payment expense of 4,000 x $24 = $96,000 in total, or $96,000 / 4 = $24,000 in each of the four years.Case study
Seen in the real world.
Northbeck Analytics is a fictional software company created here for illustration. It replaced its share option scheme with RSUs after two rounds of options went underwater, leaving staff with grants that were technically worthless and no longer motivating.
The first vesting date caught many employees by surprise. Several had assumed no tax was due because they had not sold anything, and one senior engineer faced a $46,000 income tax charge on shares that then dropped by a third in value before he got round to selling them.
The company introduced a default sell-to-cover arrangement, published a plain-English guide to vesting and tax, and added a reminder in the month before each vesting date. In this illustrative account nothing about the grants changed, but complaints about equity pay dropped sharply once people understood the timing.
Watch out
Common mistakes.
- Believing no tax is due until the shares are sold, when income tax normally arises at the moment the units vest.
- Counting the full grant value as current pay, when unvested units are worth nothing if you leave before the vesting date.
- Holding every vested share by default, which quietly concentrates both salary and savings in a single employer.
Questions
People also ask.
How do RSUs differ from stock options?
RSUs are granted at no cost and retain value as long as the share price is above zero, while options require paying a strike price and are worthless if the share price stays below it.
What happens to RSUs if you leave the company?
Unvested units are normally forfeited, though good leaver provisions in some plans allow a portion to be kept in cases such as redundancy or retirement.
Do RSUs pay dividends?
Usually not while unvested, although many plans credit dividend equivalents that are paid out when the underlying units eventually vest.
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