The Golden Parachute Trap: How Section 280G Can Take 20% of Your Accelerated Equity and Bonuses in an M&A Exit

You built your startup on a lean salary. You took equity instead of cash because you believed in the long game. Now the acquisition offer has landed, your unvested shares are accelerating, and you're staring at a number that feels life-changing. But buried in the deal model is a tax provision most founders have never heard of—and it can take 20% of your accelerated equity value and strip your company's deduction for the rest.

It's called Section 280G, and it's the golden parachute tax trap that catches founders at the worst possible moment: deal closing, when there's no time to restructure and every dollar has already been allocated.

With M&A activity rebounding through 2025 and 2026, more founders are hitting exit velocity for the first time. Many built their companies on modest W-2 compensation, relying on equity for the payoff. That combination—low salary, large acceleration—is exactly what Section 280G was designed to penalize. Here's what every founder needs to know before signing the letter of intent.

What Section 280G Does—and Why It Hits Founders Hardest

Section 280G of the Internal Revenue Code, along with its companion provision Section 4999, imposes two penalties when a "disqualified individual" receives "excess parachute payments" in connection with a change in ownership or control:

• A 20% excise tax on the individual—paid by the founder or executive, on top of ordinary income tax (26 U.S.C. § 4999).
• Loss of the company's tax deduction for the same excess amount—meaning the acquiring entity can't deduct the excess portion as compensation (26 U.S.C. § 280G(a)).

The trap hits founders disproportionately because of how the "base amount" is calculated. Your base amount is the average annual taxable compensation you received from the company over the five taxable years preceding the change in control (26 U.S.C. § 280G(d)(1)–(2)). For a founder who paid herself $80,000 per year for five years, the base amount is $80,000. The 280G threshold is three times that—$240,000.

If your total parachute payments in the deal equal or exceed $240,000, the rules trigger. And the penalty doesn't apply only to the amount above $240,000—it applies to everything above your base amount of $80,000. One dollar over the threshold turns $160,000 of payments into excess parachute payments subject to the 20% excise tax and deduction disallowance.

For a founder receiving $2 million in accelerated equity at closing, that's a $384,000 excise tax (20% of $1.92 million), plus the company loses its deduction on the same $1.92 million. The lower your salary history, the lower your safe harbor, and the more of your deal proceeds get swept into the penalty zone.

What Counts as a Parachute Payment

The definition of "parachute payment" under Section 280G is intentionally broad. Under Treasury Regulation 1.280G-1, a parachute payment is any payment in the nature of compensation to a disqualified individual that is contingent on a change in ownership or control, where the aggregate present value of all such payments equals or exceeds three times the base amount.

In a startup M&A deal, the following commonly count as parachute payments:

• Accelerated equity vesting—the value of unvested options, RSUs, or restricted stock that vests early because of the transaction. This is often the largest component for founders.
• Cash retention or transaction bonuses—any bonus tied to the closing or contingent on the change of control.
• Severance payments—post-termination compensation arranged in connection with the deal.
• Non-compete consideration—payments for restrictive covenants entered into as part of the transaction. (Note: amounts that represent reasonable compensation for actual services rendered post-closing can be excluded, but the burden is on the taxpayer to establish this by clear and convincing evidence.)
• Group health continuation benefits—subsidized COBRA or extended health coverage provided as part of a severance package.
• Property transfers—any transfer of property is treated as a payment at fair market value under 26 U.S.C. § 280G(d)(3).

Notably, payments under qualified retirement plans (such as 401(k) plans) are exempt from parachute treatment under 26 U.S.C. § 280G(b)(6). But most startup equity awards and deal bonuses don't qualify for this exemption.

How Accelerated Equity Is Valued

Not all of your accelerated equity necessarily counts as a parachute payment at full value. Under Treas. Reg. 1.280G-1 Q&A-24(c), for time-vested awards (options, RSUs, restricted stock that vests solely on the passage of time), the parachute value is the lesser of the full payment or the sum of two components:

• Acceleration value: 1% of the award's value for each full month the vesting is moved up.
• Lapse-of-service value: the present-value difference between the accelerated vesting date and the original vesting date, discounted at 120% of the applicable federal rate (AFR), compounded semiannually.

This means equity that was about to vest in a few months carries a relatively small parachute value, while equity years from vesting carries a much larger one. Performance-based awards, however, do not get this favorable treatment—if a change in control accelerates a performance award or changes its targets, the affected value goes into the parachute calculation at full value.

Who Is a "Disqualified Individual"?

Section 280G only applies to "disqualified individuals." Under 26 U.S.C. § 280G(c), this includes any individual who is an employee or independent contractor providing personal services to the corporation and who is also an officer, a shareholder (owning more than 1% of the fair market value of the corporation's stock), or a highly compensated individual (defined as a member of the highest paid 1% of employees, or if fewer, the highest paid 250 employees).

In practice, this sweeps in most founders, C-suite executives, and early employees with significant equity stakes. A rank-and-file engineer with a standard RSU grant almost never qualifies—but a VP of Engineering who owns 2% of the company absolutely does.

The Cutback Election: Why Founders Often Reject It

Section 280G(b)(5) provides a mechanism to avoid the excise tax entirely through what practitioners call a "cutback" or "best results" election. The concept is straightforward in theory: if reducing the total parachute payments to just below the 3x threshold produces a better after-tax outcome for the individual than paying the full amount and absorbing the 20% excise tax, the payments are automatically reduced.

As Hunton Andrews Kurth explains, there are several variations of this approach:

• Straight cutback: compensation above the 280G threshold is automatically forfeited. No excise tax applies.
• "Better-off" cutback: the individual retains whichever produces the greater after-tax result—the full amount minus the excise tax, or the cut-back amount with no excise tax.
• Full gross-up: the company pays the individual enough to make them whole for the excise tax. This is now largely disfavored because the gross-up payment is itself a parachute payment, compounding the problem.

Here's the counterintuitive part: founders frequently reject the cutback. When the excess parachute payment is large relative to the threshold, the after-tax math often favors paying the 20% excise tax and keeping the full payment rather than forfeiting a substantial portion to stay under the threshold.

Consider a founder with a $100,000 base amount (3x threshold = $300,000) who is owed $5 million in accelerated equity. The excess parachute payment is $4.9 million. The 20% excise tax is $980,000. After the excise tax and ordinary income tax, the founder still nets far more than if payments were cut back to $299,999. The cutback would save $980,000 in excise tax but cost $4.7 million in forfeited payments. The math speaks for itself.

This is why the "better-off" cutback is the preferred mechanism—it automatically calculates which outcome is superior and applies it. But it must be built into the employment agreement or CIC plan before the transaction, not negotiated at the closing table.

Designing Your CIC Plan: Why Double-Trigger Beats Single-Trigger

The most effective 280G mitigation happens before any deal is on the table—through careful Change-in-Control (CIC) plan design. The single most important structural decision is whether your equity acceleration is single-trigger or double-trigger.

Single-trigger acceleration vests all unvested equity immediately upon a change in control. This is the worst configuration for 280G purposes because the entire acceleration value is contingent on the change in control and gets swept into the parachute payment calculation.

Double-trigger acceleration requires two events: (1) a change in control, and (2) a qualifying termination of employment (typically without cause or for good reason) within a specified window after the change (often 12–24 months). Because the acceleration is not solely contingent on the change in control—it also requires a separate termination event—only the portion attributable to the change in control enters the parachute calculation, and the rest may fall outside Section 280G's scope.

This distinction matters enormously. A founder with double-trigger acceleration who is retained by the acquirer and not terminated within the window may never trigger the acceleration at all—keeping the equity outside the parachute regime entirely. Even when termination does occur, the delay and the separate contingency can reduce the present value of the parachute payment and, in some cases, change the character of the payment.

If your current equity agreements or CIC plan use single-trigger acceleration, consider amending them well before any transaction is contemplated. Under 26 U.S.C. § 280G(b)(2)(C), any payment pursuant to an agreement entered into or amended within one year before the change in control is presumed to be contingent on the change—making last-minute fixes ineffective. Plan ahead.

The Shareholder Approval Exception for Private Companies

For privately held companies, Section 280G(b)(5) offers a powerful exception that public companies cannot use. If the payments are approved by a vote of more than 75% of the voting power of all outstanding stock, and there is adequate disclosure to shareholders of all material facts concerning the payments, the payments are not treated as parachute payments at all (26 U.S.C. § 280G(b)(5)).

As Acquisition Stars details in their practitioner guide, the process involves several critical steps:

• Eligibility: The company's stock must not be readily tradeable on an established securities market immediately before the change in control. A company that recently completed an IPO may lose eligibility even if the cleansing process was initiated before the offering priced.
• Adequate disclosure: The disclosure must identify each disqualified individual, describe each payment, state the aggregate amount per individual, and explain the tax consequences under Sections 280G and 4999.
• Conditional waivers: Each disqualified individual must irrevocably waive (before the vote) the right to receive any parachute payment above the threshold, conditioned on the vote's success. If the vote fails, the waiver is ineffective and the individual retains the right to the payment—subject to 280G penalties.
• 75% threshold: The vote must be approved by more than 75% of the voting power of all outstanding stock, not just a majority of shares present.

This "cleansing vote" can eliminate 280G exposure entirely, but it requires coordination and timing. The vote must occur before the change in control closes, and the disclosure must be comprehensive. Missing a material payment in the disclosure invalidates the vote.

Private Company Equity Awards vs. Public Company Awards

Section 280G treats private and public company equity awards differently in several important ways. The shareholder approval exception described above is available only to private companies whose stock is not readily tradeable—an advantage that disappears the moment a company goes public.

Additionally, private company stock options present unique valuation challenges. The fair market value of unvested options in a private company must be determined using a reasonable valuation method, and the spread between strike price and deal price drives the parachute value. For private companies, this often requires a 409A valuation in conjunction with the 280G analysis.

Another nuance: when an acquirer assumes unvested awards in a private company transaction, the assumption itself may or may not constitute a parachute payment depending on whether the award's terms are substantially equivalent. If the acquirer replaces the awards with new awards of equal value, the continuation may not be contingent on the change in control. But if the new awards have different terms—accelerated vesting, altered performance conditions, or modified strike prices—the differential value can be a parachute payment.

Why Pre-Transaction Planning Is Non-Negotiable

The most effective 280G planning tool is time. Once a letter of intent is signed, most of the damage is already done. The key planning windows exist before the transaction is contemplated:

• Structure CIC plans with double-trigger acceleration and "better-off" cutback provisions. These should be in employment agreements and equity plans from the outset, not bolted on during diligence.
• Increase base compensation strategically. Some companies increase executive salaries or pay bonuses in the years preceding a potential transaction to raise the base amount and thus the 3x threshold. This is legitimate but must be done for genuine business reasons, not solely to manipulate the 280G calculation.
• Allocate reasonable compensation to post-closing services. Payments that represent reasonable compensation for services to be rendered on or after the change in control—including non-compete arrangements that reflect fair value for actual services—are excluded from parachute treatment under 26 U.S.C. § 280G(b)(4). But the taxpayer bears the burden of establishing reasonableness by clear and convincing evidence.
• Conduct a 280G analysis early. The moment a serious acquisition conversation begins, engage tax counsel to model the parachute payment calculations. This analysis drives negotiation positions on deal structure, retention bonuses, and equity treatment.

For more on related M&A traps that catch founders off guard, see our guides on non-compete provisions in startup acquisitions and how earnouts can cost you millions. If you're thinking about how your equity structure affects deal outcomes, our primer on fully diluted shares and equity decisions is also worth reviewing.

Actionable Next Steps

1. Audit your current CIC provisions. Pull your employment agreements, equity incentive plan, and any existing CIC agreements. Determine whether your acceleration is single-trigger or double-trigger, and whether a cutback provision exists. If you have single-trigger acceleration and no cutback, you are exposed.
2. Calculate your base amount. Average your W-2 Box 1 compensation from the company over the last five years. Multiply by three. That's your 280G threshold. If your expected deal proceeds (accelerated equity, bonuses, severance) will exceed that number, you need a plan.
3. Engage tax counsel before the LOI. A 280G analysis is a specialized calculation that requires modeling equity valuations, present value discounts, and reasonable compensation allocations. It should be performed by experienced M&A tax counsel, not your bookkeeper.
4. Prepare for the cleansing vote if your company is privately held. Work with counsel to draft the disclosure statement, conditional waivers, and voting mechanics well before the transaction closes. The 75% threshold requires advance coordination with all shareholders.
5. Negotiate the deal structure with 280G in mind. If you have leverage in the negotiation, push for deal terms that minimize parachute exposure—double-trigger acceleration, post-closing retention arrangements characterized as reasonable compensation, and deal structures that don't lump all payments into a single contingent event.

Section 280G is a mathematical trap, not a judgment call. The thresholds are fixed, the calculations are mechanical, and the penalties are automatic once triggered. But with early planning, proper CIC plan design, and a clear understanding of the cutback and cleansing vote mechanics, most founders can structure their exit to minimize or eliminate the damage. The key is starting before the deal—not after.