This article is for Irish startup founders who want to use share options to attract and retain talented employees without giving away equity too early or creating tax problems.
If you're wondering how employee share options actually work, whether you should use Ireland's KEEP scheme, and how to structure an option pool properly, this guide covers the mechanics of share options, KEEP's tax advantages and qualification requirements, and how to set up and manage an employee option scheme from scratch.
Key Takeaways
• KEEP allows employees to pay only 33% Capital Gains Tax on sale instead of 52% income tax at exercise, saving significant money.
• Reserve 10-20% of company shares for an option pool before raising investment to avoid diluting investors post-funding.
• You must notify Revenue within 30 days of granting KEEP options or lose the tax advantages for that grant.
• Standard vesting is 4 years with a 1-year cliff, meaning employees get nothing if they leave before 12 months.
• KEEP eligibility requires companies to be under 7 years old, have under €50M assets, and fewer than 250 employees.

What Are Employee Share Options?
A share option gives an employee the right to buy company shares at a predetermined price (the exercise price) at some point in the future.
Here's a simple example:
You give your employee an option to buy 1,000 shares at €1 per share (today's fair market value). The option vests over 4 years. In 4 years, when your company is worth much more, those shares might be worth €10 each. Your employee can exercise their option - pay €1,000 to buy shares now worth €10,000.
The employee gains €9,000 in value. They took the risk of joining your startup early, and they're rewarded if the company succeeds.
Key point: Options are not shares. They're the right to buy shares later. Until exercised, options give no voting rights, no dividends, and no actual ownership.
Why Use Share Options Instead of Direct Shares?
You could just give employees shares directly. So why use options instead?
- Tax efficiency - Options can be structured to minimize tax at grant. With direct shares, employees often face immediate tax on the value received.
- Vesting alignment - Options vest over time, keeping employees motivated to stay and contribute. Direct shares are immediately owned.
- Cash flow - Employees pay the exercise price when they buy shares, providing some capital to the company (though usually minimal).
- Flexibility - Options allow employees to choose when to become shareholders, often waiting until an exit event when they'll have cash to pay any taxes.
- Investor expectation - Investors expect to see employee options rather than direct share grants. It's standard market practice.
The main downside is complexity. Options require proper legal documentation, valuations, and ongoing administration.
KEEP: Ireland's Tax-Advantaged Share Option Scheme
The Key Employee Engagement Programme (KEEP) is Ireland's specific tax relief for qualifying share options.
KEEP was introduced to help Irish startups compete with international tech companies for talent by making share options more tax-efficient.
Tax advantages:
Under KEEP, employees pay no income tax when they exercise options. Instead, they only pay Capital Gains Tax (33%) when they eventually sell the shares - and only on the gain from exercise price to sale price.
Without KEEP, employees could face income tax (up to 52% including USC and PRSI) on the difference between exercise price and market value at exercise.
Example:
- Option exercise price: €1 per share
- Market value at exercise: €10 per share
- Sale price years later: €20 per share
With KEEP: No tax at exercise. CGT of 33% on €19 gain (€20 - €1) = €6.27 per share tax
Without KEEP: Income tax of ~52% on €9 gain at exercise (€10 - €1) = €4.68 per share, plus CGT of 33% on €10 gain (€20 - €10) = €3.30 per share. Total = €7.98 per share tax
KEEP saves your employees significant tax, making your options more valuable.
KEEP Qualification Requirements
Not every company can use KEEP. The requirements are specific:
Company requirements:
- Incorporated and tax resident in Ireland or EEA
- Trading for less than 7 years (unless part of specific R&D-intensive sectors)
- Gross assets under €50 million when options granted
- Fewer than 250 employees
- Not listed on a stock exchange
- Not controlled by another company (unless that company also qualifies)
- Carrying on a qualifying trade (most commercial activities qualify)
Employee requirements:
- Working for the company or a qualifying subsidiary
- Not a "specified individual" (basically, not someone who already owns more than 15% of the company)
- Exercising the option while still employed or within 90 days of leaving
Option requirements:
- Exercise price at least equal to market value when granted (usually nominal, e.g., €0.01 per share)
- Options must be exercised within 10 years of grant
- Maximum value of €300,000 per employee (based on market value at grant)
- Company must notify Revenue of the option grant
Most Irish startups qualify for KEEP. The main limitations are company age and size - you can outgrow KEEP eligibility as you scale.
Standard Share Option Schemes (ESOP)
If you don't qualify for KEEP or want more flexibility, you can use a standard Employee Share Option Plan (ESOP).
An ESOP is simply any scheme where you grant share options to employees without specific tax relief. The options work the same way mechanically, but the tax treatment is less favorable.
When to use an ESOP:
- Your company doesn't qualify for KEEP
- You've outgrown KEEP limits
- You want to grant options worth more than €300,000 per employee
- You prefer simpler administration (no Revenue notification requirements)
Tax treatment:
Employees pay income tax on the difference between exercise price and market value when they exercise options. Then they pay CGT on gains when they sell shares.
This creates a potential cash flow problem - employees owe tax when they exercise, before they've sold shares and received cash. Many employees wait until an exit event to exercise, avoiding this issue.
How to Structure an Employee Option Scheme
Setting up share options properly requires several steps:
Step 1: Reserve shares for the option pool
Before granting options, create a pool of shares reserved for employees. Most startups reserve 10-20% of total shares for this purpose.
This is typically done by issuing new shares that sit unallocated in the option pool. Founders' ownership percentages are diluted to create this pool.
Step 2: Get a valuation
For KEEP, you need a professional valuation to establish the market value of shares. For early-stage startups, this might be nominal (€0.001 per share). For later-stage companies, independent valuation is required.
The exercise price must be at least equal to this market value for KEEP qualification.
Step 3: Draft the option scheme documents
You need legal documentation including:
- The option plan rules
- Individual option agreements for each employee
- Board resolutions approving the plan and grants
- Revenue notifications (for KEEP)
Standard documents cost €1,500-3,000 to prepare properly. Many startups use templates then customize as needed.
Step 4: Grant options to employees
Issue individual option agreements specifying:
- Number of options granted
- Exercise price per share
- Vesting schedule (typically 4 years with 1-year cliff)
- Exercise period (typically 10 years from grant)
- Terms and conditions
Step 5: Maintain the option register
Track who has options, how many have vested, exercises, and cancellations. This becomes critical during fundraising or exits when investors need to see the full cap table.
Vesting for Employee Options
Like founder shares, employee options should vest over time.
Standard terms:
- 4-year vesting period
- 1-year cliff (no vesting for first year, then 25% vests)
- Monthly vesting thereafter (1/48th per month for remaining 3 years)
If an employee leaves before options vest, unvested options are typically cancelled. Vested options may remain exercisable for 90 days after departure (or longer at company discretion).
Some companies accelerate vesting if:
- The company is acquired
- The employee is terminated without cause
- The employee dies or becomes disabled
Acceleration terms should be clearly documented in option agreements.
Exercise Windows and Timing
When can employees actually exercise their options and buy shares?
Standard approach:
Employees can exercise vested options any time during the option term (typically 10 years). Many wait until an exit event because:
- They need cash to pay the exercise price
- They'll owe tax on exercise (except under KEEP)
- Shares aren't liquid until there's an exit
Exercise on departure:
Most schemes give departing employees 90 days to exercise vested options after leaving employment. After 90 days, unexercised options expire.
This creates pressure to exercise or lose the options, even if there's no immediate liquidity.
Early exercise provisions:
Some schemes allow employees to exercise unvested options immediately, subject to company buyback rights if they leave before vesting completes. This can have tax advantages but adds complexity.
Communicating Options to Employees
Employees often don't understand what options mean or what they're worth.
What to explain:
- Options are not shares (yet)
- What vesting means and their personal vesting schedule
- How exercise works and when they'd need to pay
- Tax implications (particularly KEEP advantages)
- What options might be worth if the company succeeds
- That options could become worthless if company fails
What not to promise:
Don't guarantee values or outcomes. Options are speculative - they're valuable only if the company succeeds and achieves an exit.
Many startups use option calculators showing potential values at different exit scenarios (€10M exit, €50M exit, €100M exit) to help employees understand upside.
Option Pool Refresh
As you hire more people and grant more options, you'll deplete your option pool.
When this happens:
Create a new pool by issuing more shares. This dilutes everyone - founders, existing employees, and investors.
Investors typically push for "pre-money" option pools, meaning the pool is created before they invest, so they're not diluted by it. Founders and existing shareholders absorb the dilution.
Typical pattern:
- Incorporate with 10% option pool
- Raise seed round, create 15% pool (founders diluted)
- Grant options over 2 years
- Raise Series A, create new 15% pool (everyone diluted pro rata)
Plan for option pool refreshes when negotiating investment terms. Investors will want to see you have sufficient options to hire the team needed to achieve milestones.
When Employees Exercise: Practical Considerations
Exercise creates several practical issues:
Cash requirements:
Employees need to pay the exercise price. For early options at nominal value, this might be €100. For later options at higher valuations, it could be thousands.
Share certificate administration:
Once exercised, employees become shareholders. You need to:
- Issue share certificates
- Update the register of members
- File changes with the CRO if required
- Provide shareholder information rights
Sudden increase in shareholders:
If 20 employees exercise options, you suddenly have 20+ shareholders instead of 2-3 founders. This creates administrative complexity for general meetings, resolutions, and communications.
Many companies discourage exercise until an exit event to avoid these issues.
Good Leaver / Bad Leaver Provisions
What happens to options when employees leave matters enormously.
Good leaver:
- Leaves voluntarily on good terms
- Made redundant
- Dies or becomes disabled
- Typically keeps vested options and can exercise for 90 days
Bad leaver:
- Terminated for cause
- Breaches employment terms
- Joins competitor
- Typically loses all options, even vested ones (though this can be challenged legally)
The specific terms should be clearly defined in option agreements. Ambiguity here creates disputes.
Common Mistakes to Avoid
Granting options too generously early
Don't give your second employee 5% of the company. You need option pool to last for many hires. Early employees get more than later ones, but save enough for the team you'll need.
Not reserving an option pool before investment
Investors expect to see an option pool already created. If you create it after they invest, they're diluted. Better to create it pre-investment.
Forgetting to notify Revenue for KEEP
KEEP requires notification within 30 days of grant. Miss this and you lose the tax advantages for that grant.
Not getting proper valuations
For KEEP, exercise price must be at market value. Too low and Revenue can challenge. Get professional valuations.
Over-promising to employees
Don't promise guaranteed values or outcomes. Options are speculative. Make sure employees understand the risks.
Not documenting properly
Verbal option promises create disputes. Everything must be in writing with proper legal documentation.
How Can Open Forest Help?
Open Forest can help you structure employee share option schemes properly from the start.
We provide:
- Guidance on whether KEEP or standard ESOP suits your situation
- Connection to valuation specialists for KEEP compliance
- Template option scheme documents
- Advice on appropriate option pool sizes
- Ongoing administration support
While full option scheme setup often requires specialist legal input (€1,500-3,000), we can handle the foundational work and connect you with the right specialists for complex elements.
Getting your option scheme right is critical for recruitment, retention, and future investment rounds. We'll help ensure your structure works for your business stage and goals.
Contact us to discuss your employee equity needs.

Stuart Connolly is a corporate barrister in Ireland and the UK since 2012.
He spent over a decade at Ireland's top law firms including Arthur Cox & William Fry.





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