Double-Trigger RSUs
No tax bill until there's actually a way to sell. The private-company RSU standard.
- Trigger 1
- Time-based vesting (typically 4 years)
- Trigger 2
- Liquidity event (IPO, acquisition, direct listing)
- Tax event
- At settlement (when both triggers are met)
- Tax treatment
- Full FMV at settlement taxed as ordinary income
- Section 409A
- Must be structured carefully to avoid 20% penalty
- Forfeiture risk
- No liquidity event = no shares delivered
Why double-trigger exists
Standard (single-trigger) RSUs settle automatically when they vest, delivering shares and triggering a tax event. At public companies, this works fine because the employee can immediately sell shares to cover the tax bill. At private companies, there is no market to sell into. An employee who vests 10,000 RSUs worth $140,000 at a private company would owe roughly $50,000-$65,000 in federal and state income taxes on shares they cannot sell. Double-trigger RSUs solve this by adding a second condition: shares are not delivered until a liquidity event occurs, deferring both the share delivery and the tax bill until the employee can actually sell.
How the two triggers work
The first trigger is standard time-based vesting, typically four years with a one-year cliff. As each vesting milestone passes, that tranche becomes 'service-vested.' But the shares are not delivered. The second trigger is a qualifying liquidity event, defined in the RSU agreement, usually an IPO, direct listing, or acquisition. When the second trigger fires, all service-vested tranches settle simultaneously. If you have been at the company for three years when it IPOs, three years of vested RSUs settle at once, creating a single large taxable event.
The Section 409A compliance risk
RSU structures can trigger IRC Section 409A, the nonqualified deferred compensation rules. If the RSU arrangement constitutes deferred compensation and does not fit within an exception, non-compliance results in immediate income inclusion plus a 20% additional tax and interest. This is why double-trigger RSUs are carefully designed by legal teams to align settlement with a qualifying liquidity event and satisfy 409A safe harbors. Poorly structured double-trigger RSUs at smaller companies can create catastrophic tax surprises.
What happens if you leave before the IPO
If you leave the company after some RSUs have service-vested but before a liquidity event, the outcome depends on your RSU agreement. Most plans forfeit unvested RSUs immediately. For service-vested RSUs, some plans allow them to remain outstanding and settle if a liquidity event occurs within a defined window (often 3-7 years from grant). Others forfeit everything on departure, vested or not. Read your RSU agreement carefully. The term/expiration clause determines whether you keep any economic interest after you leave.
Tax planning at IPO
When both triggers fire at IPO, the full FMV of all settling RSUs is taxed as ordinary income. If three years of RSUs vest simultaneously, the tax bill can be enormous. Companies typically use sell-to-cover or net settlement (withholding shares to cover taxes), but IPO lock-up periods can complicate this. If you cannot sell during the lock-up, you may need cash from other sources to cover tax withholding shortfalls. Setting up a 10b5-1 trading plan before the IPO can help manage the first post-lock-up sale window.
Common mistakes
Treating double-trigger RSUs as 'guaranteed shares after X years.' The liquidity trigger can fail if the company never IPOs or takes longer than the RSU term allows. Ignoring the term/expiration clause, which can cause RSUs to expire worthless even if you have years of service vesting. Not planning for the concentrated tax event at IPO when multiple years of RSUs settle simultaneously. Assuming you can sell immediately at IPO to cover taxes when a 180-day lock-up may prevent it.
Common questions
Are double-trigger RSUs better than stock options?
They solve different problems. RSUs have no exercise cost and no AMT risk, which is simpler. But options can be more valuable if the stock price grows significantly, because the spread above the strike price is all upside. Options also allow early exercise and QSBS planning, which RSUs do not. At late-stage private companies, double-trigger RSUs are generally preferred because they eliminate the 'pay tax on shares you can't sell' problem entirely.
What counts as a 'liquidity event' for the second trigger?
It depends on your RSU agreement. Most define it as an IPO (including direct listing) or a change of control (acquisition). Some agreements include secondary tender offers or company-sponsored buyback programs. SPAC transactions may or may not qualify depending on the agreement language. Read the specific definition in your grant documentation.
Can I do an 83(b) election on double-trigger RSUs?
Generally no. An 83(b) election applies to property that has been transferred to you subject to a substantial risk of forfeiture. With double-trigger RSUs, no property is transferred until both triggers are met. There is nothing to elect on because you don't hold shares yet.
Sources
Use the scenario modeler to see how Double-Trigger RSUs mechanics play out with your specific grant. The full app goes deeper: per-grant modeling, fund signals, and competing lender terms matched to your situation.