When comparing employee equity compensation, the terms share incentive plan and RSU are often used as though they describe the same thing. They do not.
In the United States, “share incentive plan” is generally a broad term for an equity compensation arrangement, while a Restricted Stock Unit (RSU) is a specific type of equity award. A share incentive plan may contain several different types of awards, including stock options, restricted stock, RSUs, and employee stock purchase opportunities.
Understanding the difference matters because each type of equity compensation can have different vesting requirements, tax consequences, risks, and potential financial benefits.
For U.S. employees, the distinction is particularly important because federal tax treatment depends on the actual type of equity award rather than simply the name used by an employer.
This guide explains share incentive plan vs RSU, how each works, how they differ, how U.S. taxes generally apply, and what employees should consider before accepting or exercising equity compensation.
Disclaimer: This article provides general educational information about U.S. equity compensation. It is not legal, tax, investment, or financial advice. Individual tax consequences can vary based on the award agreement, employment status, state law, federal tax rules, and personal circumstances. Consult a qualified tax or financial professional for advice about your specific situation.
What Is a Share Incentive Plan?
A share incentive plan is a broad term used to describe an employer’s equity compensation program.
Under a share incentive plan, a company may give eligible employees an opportunity to receive, purchase, or earn company stock or an award whose value is connected to company stock.
In the United States, companies may more commonly use terms such as:
- Equity incentive plan
- Stock incentive plan
- Equity compensation plan
- Employee stock plan
- Employee equity plan
The exact structure depends on the company and its plan documents.
A share incentive plan can include different types of equity awards, such as:
- Restricted Stock Units (RSUs)
- Incentive Stock Options (ISOs)
- Nonqualified Stock Options (NSOs)
- Restricted stock
- Employee Stock Purchase Plans (ESPPs)
- Stock appreciation rights
- Other equity-based compensation
Therefore, asking whether an employee has a “share incentive plan” does not tell you exactly what the employee owns.
You need to look at the individual award agreement to determine whether the employee received RSUs, stock options, restricted stock, or another form of equity.
What Is an RSU?
A Restricted Stock Unit (RSU) is a specific type of equity compensation award.
An RSU generally represents a company’s promise to deliver shares of stock, or in some arrangements an equivalent cash amount, after specified conditions are satisfied.
The most common condition is vesting.
For example, an employer could grant an employee:
1,000 RSUs vesting over four years.
If the employee satisfies the applicable service requirements, the RSUs may vest according to the schedule established in the award agreement.
Once the RSUs settle and shares are delivered, the employee generally owns those shares, subject to any applicable restrictions.
Unlike a stock option, an RSU generally does not require the employee to pay an exercise price to receive the shares.
That is one of the biggest differences when comparing a share incentive plan vs RSU.
Share Incentive Plan vs RSU: The Key Difference
The simplest way to understand the distinction is:
A share incentive plan is generally the broader compensation framework, while an RSU is a specific type of equity award that can be granted under such a plan.
For example, a company could establish an equity incentive plan that permits it to issue:
- RSUs
- Stock options
- Restricted stock
- Other permitted equity awards
An employee might then receive 2,000 RSUs under that company’s equity incentive plan.
In that example:
Equity incentive plan = the overall plan
RSU = the individual award
This means comparing “share incentive plan” directly with “RSU” can sometimes be like comparing a category with one specific product within that category.
Share Incentive Plan vs RSU Comparison
| Feature | Share Incentive Plan | RSU |
| What is it? | Broad equity compensation arrangement | Specific equity award |
| Can it include different awards? | Yes | No; RSU is one award type |
| Provides company equity? | Depends on award | Generally yes after settlement |
| Exercise price | Depends on award | Generally none |
| Vesting | Depends on award | Usually required |
| Tax treatment | Depends on award type | Generally compensation income at settlement |
| Can be offered by private companies? | Yes | Yes |
| Can be offered by public companies? | Yes | Yes |
| Stock options possible? | Yes | No |
| RSUs possible? | Yes | The award itself |
| Risk profile | Depends on award | Depends on stock value and plan terms |
How Does a Share Incentive Plan Work?
The operation of a share incentive plan depends on the plan’s specific terms.
A company generally creates an equity compensation plan that establishes the rules governing available awards.
The plan may specify:
- Who is eligible
- What types of awards can be granted
- Maximum shares available
- Vesting provisions
- Exercise provisions
- Expiration rules
- Transfer restrictions
- Treatment after termination
- Change-of-control provisions
- Administrative procedures
An employee may then receive an individual award under that plan.
For example, imagine a technology company creates an equity incentive plan allowing it to issue stock options and RSUs.
The company could grant:
Employee A: 5,000 stock options
Employee B: 2,000 RSUs
Both employees participate in the company’s broader equity incentive program, but they have completely different equity awards.
This distinction can produce substantially different tax and financial consequences.
How Do RSUs Work?
RSUs usually follow a relatively straightforward process.
Step 1: Grant
The employer grants a specific number of RSUs.
For example:
2,000 RSUs
At this stage, the employee generally does not own 2,000 shares of stock simply because the RSUs were granted.
The award remains subject to the conditions in the grant agreement.
Step 2: Vesting
The RSUs become vested according to the applicable schedule.
A common structure might be four-year vesting, although actual schedules vary.
For example:
- Year 1: 25%
- Year 2: 25%
- Year 3: 25%
- Year 4: 25%
The actual schedule can be different and may include a cliff, quarterly vesting, monthly vesting, or performance conditions.
Step 3: Settlement
After vesting and satisfaction of applicable conditions, the RSUs generally settle.
The employee receives shares or, under some arrangements, cash equivalent to the value of the vested units.
Step 4: Tax Withholding
When taxable compensation arises, the employer generally handles applicable payroll reporting and withholding according to the applicable rules.
Step 5: Employee Owns Shares
If shares are delivered, the employee generally becomes a shareholder with respect to those shares, subject to applicable restrictions.
The employee can then decide whether to hold or sell the shares, subject to company policies and securities-law restrictions.
Share Incentive Plan vs RSU: Which One Is More Valuable?
There is no universal answer.
A share incentive plan is not itself a specific investment or award that can be assigned a single value.
Its value depends on what type of award the employee receives.
For example, a share incentive plan that provides stock options could produce a very different financial outcome from a plan that provides RSUs.
RSUs can have relatively straightforward economic value because the employee generally receives shares without paying an exercise price.
Stock options are different because their value depends heavily on the difference between the stock’s market value and the option’s exercise price.
Consider a simplified example.
An employee receives an option with:
- Exercise price: $10
- Future stock value: $40
The theoretical spread is:
$40 − $10 = $30 per share
If the employee receives 1,000 options, the gross spread would be $30,000 before considering taxes, transaction costs, and other factors.
With an RSU, an employee receiving 1,000 shares when the stock is worth $40 would have shares worth approximately $40,000 before taxes and assuming the shares can actually be sold at that value.
These examples are simplified and do not guarantee actual investment results.
Share Incentive Plan vs RSU: Tax Differences in the US
Taxation is one of the most important differences between equity awards.
The IRS treats different types of stock compensation differently. Stock options, restricted stock, and RSUs should therefore not be assumed to have identical tax treatment.
How Are RSUs Taxed?
For many standard RSU arrangements, the taxable event generally occurs when the RSUs are settled and the employee receives the stock or cash, although the precise timing can depend on the plan structure and applicable tax rules.
The value included as compensation generally becomes part of the employee’s taxable income.
For example, assume an employee receives:
500 RSUs
When the RSUs settle, the company’s stock is worth:
$50 per share
The gross value would be:
500 × $50 = $25,000
The $25,000 represents the approximate value before applicable withholding and other adjustments.
The employer may withhold shares or cash to satisfy applicable tax withholding obligations.
After the employee receives the shares, any later change in value generally creates a separate gain or loss when the shares are sold.
How Are Stock Options Taxed?
Stock options are different.
The IRS distinguishes between statutory stock options, including incentive stock options and certain employee stock purchase plan options, and nonstatutory stock options.
Incentive Stock Options
Incentive Stock Options, or ISOs, can receive special federal tax treatment if applicable statutory requirements are satisfied.
Generally, the IRS does not require regular federal income inclusion when an ISO is granted or exercised, although exercising an ISO can create an alternative minimum tax adjustment.
Additional rules apply when the shares are eventually sold.
Nonqualified Stock Options
Nonqualified or nonstatutory stock options generally have different tax treatment.
For many nonstatutory options that do not have a readily determinable fair market value at grant, there is generally no taxable event at grant. When the option is exercised, the spread between the stock’s fair market value and the exercise price is generally included as compensation income.
This makes the tax timing substantially different from an RSU.
RSU vs Stock Option Under a Share Incentive Plan
One of the most useful comparisons is between RSUs and stock options that are issued under the same equity incentive plan.
Suppose a company grants two employees equity.
Employee A: RSUs
Employee A receives:
1,000 RSUs
The shares are worth $20 when they vest and settle.
The gross value is approximately:
$20,000
Employee A generally does not have to pay an exercise price to receive the shares.
Employee B: Stock Options
Employee B receives:
1,000 stock options
Exercise price:
$10
Stock value when exercised:
$20
The theoretical spread is:
$10 × 1,000 = $10,000
The tax treatment depends on whether the options are ISOs or nonstatutory options and the circumstances surrounding exercise and sale.
This illustrates why the number of equity awards alone does not tell you which compensation package is more valuable.
Vesting: Share Incentive Plan vs RSU
Vesting is another important factor.
A share incentive plan can contain awards with different vesting structures.
For example:
- Four-year time-based vesting
- Three-year vesting
- One-year cliff
- Monthly vesting
- Quarterly vesting
- Performance-based vesting
- Milestone-based vesting
RSUs frequently use time-based vesting.
However, there is no universal RSU vesting schedule.
The award agreement controls.
Employees should check exactly how many shares vest each year and what happens if they leave the company.
What Happens If You Leave Your Job?
The consequences of leaving a company can differ substantially depending on the award.
Leaving With Unvested RSUs
Unvested RSUs are generally subject to forfeiture if the applicable service condition is not satisfied.
For example, if an employee has 2,000 RSUs and only 1,000 have vested when employment ends, the employee may lose the remaining unvested 1,000 units.
The exact result depends on the plan and award agreement.
Leaving With Stock Options
Stock options can have more complicated termination provisions.
A plan may specify a limited period during which vested options can be exercised after termination.
Some circumstances, such as retirement, death, or disability, can have different rules.
Employees should review the specific award agreement before leaving an employer.
What Happens to RSUs After They Vest?
Once RSUs vest, the next question is whether they immediately settle or whether settlement occurs according to another schedule.
In many standard arrangements, vesting and settlement occur together or close together.
Once shares are delivered, the employee generally owns the shares, subject to applicable restrictions.
At that point, the employee typically has two basic choices:
Hold the shares
The employee can retain the stock and potentially benefit if the company’s share price increases.
However, the stock price can also decline.
Sell the shares
The employee can sell the shares if permitted by applicable law and company policy.
Public-company employees may be subject to:
- Trading windows
- Blackout periods
- Insider trading policies
- Rule 10b5-1 arrangements
- Other company restrictions
Private-company employees may face substantially greater liquidity restrictions.
RSUs at Public vs Private Companies
The practical value of an RSU can differ dramatically depending on whether the employer is public or private.
Public Company RSUs
Public-company RSUs are generally easier to value because there is an observable market price.
If an employee receives 1,000 vested shares and the stock is trading at $50, the market value before taxes is approximately:
$50,000
The employee may generally be able to sell the shares subject to company policies and securities-law requirements.
Private Company RSUs
Private-company RSUs can be more complicated.
There may be no public market where employees can immediately sell shares.
The company could eventually:
- Go public
- Be acquired
- Conduct a tender offer
- Provide another liquidity opportunity
But none of these outcomes is guaranteed.
Therefore, employees should be cautious about treating private-company equity as equivalent to cash.
Share Incentive Plan vs RSU: Which Is Better for Employees?
The answer depends on the specific award.
RSUs can be attractive because employees generally do not have to pay an exercise price.
This can make the economic structure relatively easy to understand.
Stock options, however, can provide significant upside if the company’s share price increases substantially above the exercise price.
A simplified comparison:
| Situation | RSU | Stock Option |
| Stock value at award | $20 | $20 |
| Award | 1,000 units | 1,000 options |
| Exercise price | None generally | $20 |
| Stock later rises to $50 | Potential $50,000 gross share value | Potential $30,000 spread |
| Stock falls to $15 | Shares have lower value | Option may have no intrinsic value |
This is only an illustration. Actual taxation, vesting, exercise costs, liquidity, and contractual terms can materially change the outcome.
Advantages of RSUs
RSUs have several potential advantages.
No traditional exercise price
Unlike stock options, RSUs generally do not require employees to purchase the shares at a predetermined exercise price.
Easier to understand
The economic structure is often simpler.
Potential value even when stock price falls
If the stock remains above zero, vested RSUs can still have some value even if the stock price falls substantially from the grant-date level.
Common at established companies
RSUs are widely used as compensation by public companies and are also used by private companies.
Alignment with company performance
Employees can participate in changes in the company’s stock value.
Disadvantages of RSUs
RSUs also have potential disadvantages.
Tax liability
RSUs can create taxable compensation when they settle.
Stock-price risk
After receiving shares, their market value can decline.
Concentration risk
Holding a large amount of employer stock can concentrate your financial exposure in one company.
Vesting requirements
Employees can lose unvested RSUs if they leave before vesting, depending on the award terms.
Private-company liquidity
Private-company shares may not be readily sellable.
Advantages of a Share Incentive Plan
Because a share incentive plan is a broader structure, its advantages depend on what awards are included.
For employers, a well-designed equity incentive plan can help:
- Attract employees
- Retain key personnel
- Align employee incentives with shareholders
- Reward long-term performance
- Supplement cash compensation
- Create long-term incentives
For employees, the plan can provide access to company equity through different award types.
Risks of a Share Incentive Plan
Employees should not assume that every equity award will produce a financial gain.
Potential risks include:
- Stock-price declines
- Tax obligations
- Lack of liquidity
- Vesting forfeiture
- Exercise costs
- Dilution
- Expiration of options
- Company performance risk
- Concentration risk
Private-company equity can involve additional risks because there may be no public market for the shares.
US Securities Rules and Equity Compensation
Equity compensation is also subject to securities laws.
For eligible non-reporting companies, SEC Rule 701 provides an exemption for certain securities issued as compensation to employees, consultants, and advisors. The exemption has conditions and disclosure requirements. Securities issued under Rule 701 are restricted securities and generally cannot simply be freely traded unless registration or another applicable exemption permits the sale.
This is particularly relevant when discussing equity compensation at private companies.
Employees should not assume that receiving company stock automatically means they can sell it whenever they want.
Public-company employees may also be subject to securities-law requirements and company trading policies.
Share Incentive Plan vs RSU and Section 83(b)
Section 83(b) is another area that sometimes causes confusion.
A Section 83(b) election generally relates to certain property transferred in connection with services that is subject to substantial vesting restrictions.
If applicable, an election can allow a taxpayer to choose to include the property’s value in income at transfer rather than waiting until it becomes substantially vested. IRS guidance states that the election generally must be filed within 30 days after the property is transferred.
However, employees should not assume that an 83(b) election applies to RSUs.
RSUs are generally contractual rights to receive stock or cash in the future rather than actual restricted stock transferred to the employee at grant. The IRS specifically notes that an 83(b) election cannot be made for a nonstatutory stock option, and the Section 83 rules depend on the nature of the property involved.
Because an incorrect or unnecessary tax election can have serious consequences, professional tax advice may be appropriate.
Share Incentive Plan vs RSU: What Should Employees Look For?
If you receive an equity compensation offer, do not focus only on the number of shares or units.
Review the following information.
1. Type of Award
Determine whether you are receiving:
- RSUs
- ISOs
- NSOs
- Restricted stock
- ESPP rights
- Another type of equity award
2. Number of Shares
Find out exactly how many shares or units are covered.
3. Vesting Schedule
Determine when the equity becomes vested.
4. Exercise Price
If you receive stock options, determine the exercise price.
RSUs generally do not have a traditional exercise price.
5. Current Company Valuation
For private companies, determine how the company values its shares and what valuation information is actually available.
6. Tax Treatment
Understand when taxable income may arise.
7. Termination Rules
Find out what happens to your equity if you resign, are terminated, retire, become disabled, or die.
8. Expiration
Stock options can expire, so check the expiration date.
9. Liquidity
Ask whether and when you can actually sell the shares.
10. Change of Control
Review what happens to your equity if the company is acquired or undergoes another major transaction.
Example: Comparing an RSU With a Stock Option
Suppose Company ABC offers two employees different equity awards.
Employee A
Employee A receives:
1,000 RSUs
The shares are worth $30 when they settle.
Approximate gross value:
1,000 × $30 = $30,000
No traditional exercise price is required.
Employee B
Employee B receives:
1,000 stock options
Exercise price:
$15
Stock value at exercise:
$30
The theoretical spread is:
($30 − $15) × 1,000 = $15,000
The tax treatment for Employee B depends on whether the options are ISOs or nonstatutory options and on the circumstances.
This example demonstrates why an employee should not automatically compare “1,000 RSUs” with “1,000 options” as if they were identical.
They are not.
Frequently Asked Questions
Is an RSU a share incentive plan?
Not exactly. An RSU is a specific type of equity award. A share incentive plan is generally a broader term describing an equity compensation program that can contain different types of awards.
Is a share incentive plan the same as an equity incentive plan?
In many contexts, the terms can be used similarly, but the exact meaning depends on the employer’s documents. In U.S. practice, “equity incentive plan” is a common term for a plan that authorizes various equity awards.
Are RSUs better than stock options?
Not necessarily. RSUs generally have no traditional exercise price, while stock options can offer substantial upside if the stock price rises significantly above the exercise price. The better award depends on the terms, tax consequences, company valuation, liquidity, and employee’s circumstances.
Do RSUs count as income?
Generally, RSUs can create taxable compensation when they settle and the employee receives the shares or cash, subject to the specific arrangement and applicable tax rules.
Do RSUs have an exercise price?
Generally, no. Unlike stock options, an RSU generally does not require the employee to purchase the underlying stock at a predetermined exercise price.
Can an RSU lose value?
Yes. Once shares are delivered, their value can rise or fall with the company’s stock price. If the stock price declines, the value of the employee’s shares can decline.
Can private companies offer RSUs?
Yes. Private companies can use RSUs and other forms of equity compensation, subject to applicable corporate, tax, securities, and plan requirements.
What happens to unvested RSUs if I leave?
The treatment depends on the plan and award agreement. In many arrangements, unvested RSUs are forfeited when employment ends, although specific agreements can provide different treatment.
Are RSUs taxed like capital gains?
Generally, the value of RSUs included as compensation when they settle is not simply treated as capital gain. After shares are received, a subsequent sale can create a capital gain or loss based on the change in value and applicable holding period.
Does every share incentive plan include RSUs?
No. A company’s equity incentive plan may authorize RSUs, stock options, restricted stock, or other awards. The actual plan documents determine what awards are available.
Final Verdict: Share Incentive Plan vs RSU
The most important point when comparing share incentive plan vs RSU is that they are not necessarily competing types of compensation.
A share incentive plan is generally the broader equity compensation framework. An RSU is a specific type of equity award that may be granted under that framework.
For example, a company might establish an equity incentive plan and use it to grant employees:
- RSUs
- Incentive stock options
- Nonqualified stock options
- Restricted stock
- Other equity awards
RSUs can be attractive because they generally do not require an employee to pay an exercise price. Once applicable vesting and settlement conditions are satisfied, the employee can receive shares or their cash equivalent, with tax consequences generally arising around settlement.
Stock options can work differently. Their value depends heavily on the relationship between the company’s stock price and the option’s exercise price. Different federal tax rules also apply to incentive and nonstatutory stock options.
For U.S. employees, the right way to evaluate equity compensation is therefore not simply to ask, “Is a share incentive plan better than an RSU?”
Instead, ask:
What type of award am I receiving under the plan, when does it vest, what are the tax consequences, what happens if I leave, and when can I actually convert the equity into cash?
Those questions provide a much more accurate picture of the potential value and risks.
Ultimately, equity compensation can be an important part of a U.S. employee’s total compensation package. However, its value depends on the company’s performance, the specific award terms, tax treatment, vesting conditions, liquidity, and the employee’s personal financial situation.
Understanding these differences before accepting, exercising, or selling equity can help employees make more informed decisions and avoid treating potential equity value as guaranteed cash compensation.
Important: U.S. federal tax and securities rules can change, and state rules may create additional requirements or taxes. Always review the actual equity plan and award agreement and seek qualified professional advice when the financial or tax consequences are significant.
