Equity compensation gives employees ownership in the company they work for, typically through RSUs or stock options. For engineers at growth-stage companies, equity often represents 30-50% of total compensation — yet most candidates evaluate it with incomplete information. According to a 2025 Levels.fyi survey, 61% of software engineers reported they "partially understood" or "did not fully understand" the equity they were offered before accepting. This guide covers the mechanics, the valuation math, and the six things candidates actually want to know before they decide.
Understanding equity is not just useful for candidates — it is essential for recruiters. Offer letters that fail to explain equity clearly are one of the top causes of post-offer negotiation and candidate withdrawal.
RSUs vs Stock Options: The Core Difference
These are the two dominant forms of equity compensation in tech. They work differently, have different risk profiles, and appeal to different types of candidates.
RSUs — Restricted Stock Units
An RSU is a promise to give an employee actual shares of company stock after a vesting period. On the vesting date, the employee receives shares worth the current market price — no purchase required, no strike price, no execution needed. RSUs have a floor of zero (they cannot be "underwater") but their upside is capped by where the stock actually goes after grant date.
Public companies predominantly use RSUs because the share price is transparent and candidates can calculate their value immediately. Stripe, Spotify, Cloudflare, and most publicly traded tech companies issue RSUs as the primary equity vehicle.
Stock Options — ISOs and NSOs
A stock option gives an employee the right to purchase company shares at a fixed price (the strike price, also called the exercise price) at some point in the future. Options only have economic value if the company's share price rises above the strike price. If the company's FMV at exercise is $50 and the strike is $20, the option has $30 of intrinsic value. If the FMV falls below the strike, the option is "underwater" and worthless.
Pre-IPO startups predominantly use options because there is no liquid market for shares, and setting a strike at the current 409A valuation aligns employee and investor interests: everyone benefits from the company growing.
The comparison in one table:
| Dimension | RSUs | Stock Options (ISO/NSO) |
|---|---|---|
| **What you receive** | Shares at vest date | Right to buy shares at strike price |
| **Value at zero growth** | Full current share value | Zero (worthless if stock stays flat) |
| **Upside** | Proportional to share price growth | Leveraged — high if stock rises significantly |
| **Risk** | Low (cannot go below zero) | Higher (can expire worthless) |
| **Tax event** | At vesting (ordinary income) | At exercise (ISO: potential AMT; NSO: ordinary income) |
| **Who uses them** | Public companies | Pre-IPO, early-stage startups |
Key insight: RSUs are predictable. Options are a bet on growth. The right choice for a candidate depends on the stage of the company and their risk tolerance — not which sounds better.
How Vesting Works: Cliffs, Schedules, and Acceleration
All equity grants vest over time — meaning you earn your shares gradually, not all at once on day one. The standard structure in tech is:
The 4-year, 1-year cliff:
- After 12 months of employment (the cliff): 25% of the total grant vests
- Months 13-48: remaining 75% vests monthly (1/48 per month) or quarterly
- If you leave before 12 months: you receive zero equity regardless of how close you were to the cliff
Why the cliff exists: It protects the company from granting equity to someone who joins and quickly decides to leave. It also creates a retention incentive in the first year when the company is most at risk of early attrition.
Annual refresh grants: Many public companies and larger startups issue annual equity refresh grants to employees who perform well, typically 25-50% of the original grant size. This "golden handcuff" system means a tenured engineer can have multiple overlapping vesting schedules, each refreshing the future equity they would forfeit by leaving.
Acceleration clauses (M&A protection):
- Single-trigger acceleration: If the company is acquired, unvested equity automatically vests. Favorable for employees; expensive for acquirers.
- Double-trigger acceleration: Equity accelerates only if (1) the company is acquired AND (2) the employee is terminated or forced into a substantially different role. More common; preferred by acquirers.
Candidates at senior levels — Staff, Principal, VP — will ask about double-trigger acceleration. Not having an answer is a red flag.
How to Value an Equity Grant
The math differs significantly between public companies and private companies.
Public company RSU valuation:
Simple: share count × current stock price = total grant value at today's price.
A grant of 1,000 RSUs at a company trading at $150/share = $150,000 total grant value, vesting over 4 years = approximately $37,500/year in equity (before tax, and before share price changes).
Private company option valuation:
More complex. Three figures you need:
- The number of options granted
- The strike price (set at current 409A FMV)
- The total shares outstanding (to calculate your ownership percentage)
The intrinsic value at grant is zero (strike = current FMV). The potential value depends entirely on what the company is worth at exit versus the 409A at grant date.
A simple model: If a company has 10 million total shares outstanding and you receive 10,000 options at a $10 strike, you own 0.1% of the company. If the company exits at a $200M valuation, your shares are worth approximately $200,000 — minus the $10 strike per share exercise cost = $100,000 pre-tax.
For broader context on total compensation levels across roles and levels, see our tech salary benchmarks for 2026 covering base, bonus, and equity by company stage.
What Tech Candidates Actually Care About
Based on the Levels.fyi 2025 compensation survey and recruiting data from companies that have published their hiring process findings, these are the equity questions candidates prioritize most:
1. The ownership percentage, not just the share count
A grant of 50,000 options sounds significant. 0.005% of the company after 10 rounds of dilution does not. Always provide both numbers.
2. The company's last valuation and funding round
Candidates want to understand where the 409A sits relative to the last preferred round valuation. A company that raised at a $500M preferred valuation but has a $100M 409A has a significant spread — options have real upside potential. A company where the 409A has caught up to the preferred valuation is closer to a flat position.
3. Liquidation preferences and preference stack
This is advanced — but senior candidates with prior startup experience will ask. A 2x liquidation preference on $50M of preferred capital means the first $100M of an exit goes to preferred investors. Common equity (what employees hold) gets nothing below that threshold. This is not widely disclosed in offer conversations but materially affects how much employees actually receive in a mid-range exit.
4. Post-termination exercise window
Standard option grants expire 90 days after the employee leaves the company. If the company is still private at that point, the employee must decide whether to exercise (spending the strike price × share count in cash) with no liquidity event in sight, or forfeit the options. Some employee-friendly companies have extended the post-termination window to 5-10 years. This is increasingly a negotiation point for senior candidates.
5. Vesting schedule flexibility
Candidates at Staff+ level increasingly ask for front-loaded vesting (more shares in year 1-2) or shorter cliff periods. This is more common at companies competing for candidates who have significant unvested equity at their current employer and need time for their existing cliff to hit.
For how to present these elements clearly and what engineers actually value in their total package beyond equity, those guides cover the full picture.
For a direct playbook on handling equity counter-offers, see the salary negotiation guide for recruiters.
How to Present Equity in an Offer
Four practical rules for equity presentation in offer conversations and offer letters:
- Give the full picture upfront. Share count, strike (if options), current FMV, vesting schedule, total outstanding shares, and your ownership percentage. Candidates will calculate this anyway — doing it for them signals transparency.
- Use current FMV, not projected multiples. Presenting equity with "if we IPO at 5x, this is worth X" is both legally risky and sets expectations that are likely not met. Current FMV is the honest figure.
- Explain the tax event. RSU recipients will owe income tax on the vesting date value. Option holders need to understand the AMT exposure on ISOs. A quick one-paragraph summary in your offer letter or pre-offer call reduces post-hire resentment when the first tax bill arrives.
- Include it in the offer letter. A verbal equity discussion is not enough. Include all equity details in writing — grant size, type, vesting schedule, strike price if applicable, and current estimated FMV. For detailed guidance on how to write a job offer letter that covers all of these elements, see the full offer letter guide.
How Nextmantra AI Approaches This
Equity compensation complexity creates a hidden hiring cost: when companies cannot answer candidate questions clearly at the offer stage, the deal stalls. Senior engineers accept faster when the total compensation picture is clear and the evaluators they met during the interview process were clearly worth their time. The bottleneck is usually the first-round interview — the week spent scheduling and conducting it, the engineer time spent on candidates who would not have passed a deeper evaluation anyway. Nextmantra AI handles that first-round evaluation entirely, compressing the period between shortlist and offer to hours rather than weeks. Fewer scheduling delays means more candidates are still single-offer when your offer arrives. See how Nextmantra AI handles this
Frequently Asked Questions
What is the difference between RSUs and stock options?
RSUs (restricted stock units) are shares granted to an employee that vest over time and are worth their current market value on vesting date — no purchase required. Stock options give the employee the right to buy shares at a fixed price (the strike price), which only has value if the stock price rises above that strike. RSUs are less risky; options have higher upside potential if the company grows significantly from the grant date. Public companies predominantly use RSUs; pre-IPO companies predominantly use options.
What is a cliff in an equity vesting schedule?
A cliff is the minimum tenure required before any equity vests. The most common structure is a one-year cliff: if an employee leaves before 12 months, they receive zero equity regardless of how close they were to the cliff date. After the cliff, the remaining equity typically vests monthly or quarterly over the following three years. The cliff protects the company from someone joining, receiving a large equity grant, and leaving immediately.
How is a 409A valuation used in equity offers?
A 409A valuation is an independent appraisal of a private company's fair market value (FMV) per share. It sets the strike price for new stock option grants at private companies. The IRS requires options to be granted at or above FMV to avoid significant tax penalties for employees. Companies typically get a 409A done annually or after major funding events. When presenting equity to candidates at private companies, the 409A FMV is the best available proxy for current share value.
What is the tax treatment of RSUs vs stock options?
RSUs are taxed as ordinary income when they vest, at the fair market value on the vesting date. You owe income tax (federal + state + FICA) on the full vested value, regardless of whether you sell. Incentive stock options (ISOs) have favorable treatment — no tax at exercise, potential AMT exposure — with capital gains rates if held long enough. Non-qualified options (NSOs) are taxed as ordinary income at exercise on the spread between strike and FMV. Tax complexity is a top reason senior candidates seek financial advice before accepting equity-heavy offers.
Can a candidate negotiate their equity grant?
Yes, and senior candidates routinely do. Common asks: increased grant size, accelerated vesting, or a larger portion in near-term RSUs versus long-dated options. For companies with limited option pool flexibility, a signing bonus can serve as a near-term equity substitute. See the salary negotiation guide for recruiters for how to handle equity counter-offers without losing the candidate.
What percentage ownership should an equity grant represent?
Percentage ownership is more meaningful than raw share count at pre-IPO companies. Standard benchmarks for Series A-B startups: founding engineer 0.5-1.0%, senior engineer 0.1-0.3%, engineering manager 0.2-0.4%. These dilute significantly through later rounds. Always ask for both the share count and the percentage of total shares outstanding.
What should a recruiter know about equity before making an offer?
Know the current 409A valuation, total shares outstanding, option pool remaining capacity, the vesting schedule your company uses, and whether double-trigger or single-trigger acceleration applies for M&A scenarios. Candidates at mid-to-senior levels will ask all of these questions. Inability to answer them at offer stage signals organizational immaturity and increases the likelihood of an offer decline.
Conclusion
Equity compensation is complex, but your job as a recruiter is to make it transparent, not to simplify it into vagueness. Candidates who understand their equity make faster decisions; candidates who feel confused about their equity either ask many questions or walk away. Present the full picture — share count, ownership percentage, vesting schedule, current FMV — and your offer acceptance rate will reflect it.
Ready to reach candidates faster with a complete offer picture? [See Nextmantra AI in practice](https://nextmantra.ai/platform)
Sources: Levels.fyi Compensation Survey 2025; IRS Publication 525 (equity tax treatment); NVCA (National Venture Capital Association) term sheet standards; Cooley LLP startup equity guides; Carta State of Private Markets 2025.