$240K RSU Grant = $0 If You Leave at Month 11 (the Cliff Trap Explained)
The Math Most People Don’t Run
Tech RSU grants get summarized as “$60K/year for 4 years”. That summary is misleading because of the cliff: in year 1, you get nothing month-to-month — and if you leave at month 11, you walk away with nothing.
We ran the math on a representative $240K grant.
The standard 4-year cliff schedule
| Period | Vesting event | Cumulative vested | Cumulative forfeit if you leave |
|---|---|---|---|
| Months 1-11 | Nothing — cliff hasn’t triggered | $0 | $240,000 (entire grant) |
| Day 365 (cliff) | 25% drops at once | $60,000 | $180,000 |
| Months 13-15 | 6.25% per quarter | $75,000 | $165,000 |
| Months 16-18 | 6.25% per quarter | $90,000 | $150,000 |
| … | … | … | … |
| Month 48 | Final vest | $240,000 | $0 |
The cliff trap is the gap between months 11 and 12: cross the day-365 line and you keep $60K; leave on day 364 and you keep $0.
Why the cliff trap matters for negotiation
Most candidates treat the offer letter’s grant value as compensation. It isn’t — it’s a delayed-payment commitment with conditions. The cliff is the biggest condition.
Consider two offers:
| Offer A | Offer B | |
|---|---|---|
| Base | $200,000 | $190,000 |
| Sign-on | $30,000 | $50,000 |
| RSU grant | $240,000 (4-yr, 1-yr cliff) | $200,000 (4-yr, 6-mo cliff) |
| Year-1 cash | $230,000 | $240,000 |
| Risk if you leave at month 6 | $30,000 sign-on (claw-backable) + $0 RSU | $50,000 sign-on (claw-backable) + ~$25K RSU vested |
| Risk if you leave at month 11 | All $240K RSU forfeited | $50K RSU vested |
Offer B looks “smaller” by gross TC ($230K + $50K + $50K/yr ≈ $230K vs Offer A’s $230K + $30K + $60K/yr ≈ $250K) but has materially less cliff risk. If your honest read of staying probability is below 80%, Offer B is the better risk-adjusted choice.
How the cliff trap interacts with stock crashes
The cliff is denominated in shares, not dollars. If GOOG drops 30% between offer signing and your 1-year cliff:
- Original grant: 1,000 shares × $240 grant-date = $240K
- At cliff (after -30%): 250 shares × $168 = $42K (instead of $60K)
The cliff still triggers. You still vest 250 shares. They’re just worth $18K less than the offer letter implied. This is normal market risk, but it compounds with the cliff trap: a year of tenure that doesn’t pay out at the assumed price.
The 10-15% attrition trap
Industry data on first-year tech attrition:
- Big tech average year-1 voluntary attrition: 10-15%
- Top quartile retention companies (Google, Meta historically): 7-10%
- Bottom quartile (Twitter post-Musk, recent acquisitions): 25-40%
Translation: at typical big-tech, 10-15% of new hires forfeit their entire cliff. On the $240K grant example, that’s $60K of equity value destroyed per departure — often more than the sign-on bonus the company paid.
Why do people leave inside year 1? Common reasons:
- Manager mismatch: not discoverable until ~3-6 months in
- Layoffs: 2022-2023 saw cliff forfeitures across all major tech firms
- Visa issues: international hires with H1B / OPT timing pressure
- Better offer arrives: especially in markets where senior IC roles get poached actively
The cliff doesn’t stop these; it just guarantees they’re expensive.
The negotiation moves that soften the cliff
If you’re at senior IC level (L6+ FAANG, Staff at most others) or have a competing offer:
- Ask for a 6-month cliff (rare but achievable at senior level). Cuts cliff trap value in half.
- Front-load the grant: 40-30-20-10 across years 1-4 instead of 25-25-25-25. Year-1 cliff still 1 year, but the cliff drops 40% instead of 25% — much more equity locked in once you cross the line.
- Sign-on that recovers cliff loss: if the company does a layoff inside year 1, the sign-on bonus’s clawback waiver covers the lost cliff. This is sometimes negotiable in exchange for accepting a smaller base.
- Refresh grants at month 12: standard practice, but ask explicitly. If the company plans annual refreshes of $60K equity, the year-1 cliff feels less like a moat and more like a floor.
For mid-level offers, the cliff is usually non-negotiable. The right move is to price the cliff trap into your decision — don’t accept an offer if the cliff trap exceeds the sign-on plus your honest estimate of stay probability.
Where this framework doesn’t apply
- Pre-IPO startup RSUs. Many private companies use double-trigger RSUs that don’t actually vest until both time AND a liquidity event (IPO/acquisition). Your “vested” share count is meaningless until the company exits. Different framework needed; the cliff trap is just the start.
- Stock options (ISOs/NSOs) instead of RSUs. Different tax treatment, different vesting nuances (early exercise, 83(b) elections). The cliff math is similar but the strike price introduces additional risk.
- Non-US RSUs. Tax treatment varies: UK has SAYE, Canada has different vest treatment, Japan defers tax recognition. The cliff schedule is usually the same, but the after-tax math differs.
- Performance-based RSUs (PSUs). Some companies (Amazon’s PRSUs in some bands, executive grants) gate vesting on company performance, not just time. The cliff is one of several gates.
What to actually do
- Look up your specific grant’s cliff %. It’s in the offer letter equity addendum. Standard is 25% for 4-year vest; some are 33% or 20%.
- Run your honest “stay probability.” If you’re under 80% sure you’ll be there 12 months, the cliff trap is real cost.
- Compute the trap value: grant × cliff% × (1 - stay probability) = expected forfeit. If that exceeds your sign-on bonus, the offer is riskier than it looks.
- For comparison shopping: don’t compare gross TC; compare year-1 risk-adjusted value (cash + p × equity vested by year 1).
- Plan to negotiate refresh grants at month 12 — even if the offer letter doesn’t mention refreshes, the practice is universal at big tech.
Open the RSU Vesting Calculator → and run your specific grant. The cliff trap amount is the number that should drive your stay/leave timing decisions.