280G Golden Parachute Excise Tax, Explained

When a Change-of-Control Payment Turns Into a Tax Bill

An acquisition term sheet lands, and the severance and equity-acceleration numbers attached to your name look substantial. Then someone from the legal team mentions "280G exposure," and the conversation shifts from what you're owed to what you'll actually keep. This is the moment most executives first encounter the golden parachute excise tax — not as an abstract compliance term, but as a line item that can quietly reduce a well-negotiated package by a fifth or more.

The mechanics are not complicated once unpacked, but they are easy to miss until a deal is already in motion. A severance multiple that looked generous in an offer letter, an equity grant that accelerates in full on a change of control, a tax gross-up clause that either exists or doesn't — each of these interacts with a single IRS threshold that determines whether your payout triggers a penalty tax on you, a lost deduction for the acquirer, or both. By the end of this article, you'll be able to identify whether your own change-of-control arrangement is likely to cross that threshold, and what to ask for before it does.

The 280G Golden Parachute Excise Tax, Defined

Section 280G of the Internal Revenue Code governs "excess parachute payments" — compensation that becomes payable to certain executives, officers, and highly compensated employees contingent on a change of control. The rule was written to discourage boards from loading up departing executives with outsized payouts timed to an acquisition, and it does so by attaching a penalty to both sides of the transaction.

Under IRC 280G, if the present value of an executive's parachute payments equals or exceeds three times that executive's "base amount" — generally a five-year average of taxable compensation — a 20% excise tax applies to the amount in excess of one times the base amount, and the acquiring company loses its corresponding tax deduction on that excess, per Plante Moran's 2021 summary of the rule (Plante Moran, 2021). The excise tax is imposed on the executive personally, on top of ordinary income tax on the payment itself. The deduction loss is a separate cost, borne by the company.

This creates a threshold effect rather than a gradual one. Stay under 3× base amount and no penalty applies. Cross it — even by a small amount — and the tax reaches back to cover everything above 1× base amount, not just the portion over the 3× line. That asymmetry is why 280G modeling matters long before a deal closes, and why executives negotiating change-of-control terms need to understand where their own numbers sit relative to the threshold, not just the headline multiple in their agreement. Our companion piece on the change-of-control severance multiple walks through how those cash multiples are typically structured before 280G is even applied.

The 3× Base Amount Trigger: A Worked Example

The base-amount math is best understood with round numbers, treated purely as a teaching example rather than a claim about any specific executive's situation.

Suppose an executive's base amount — the five-year average of W-2 compensation — works out to $1,000,000. The 3× threshold is therefore $3,000,000. If that executive's change-of-control package, once cash severance, bonus acceleration, and the present value of accelerated equity vesting are all totaled, comes to $2,900,000, the package stays under the line: no excise tax, full deduction for the acquirer.

Now suppose the same package totals $3,200,000 — pushed over the line by, say, an equity grant that vests in full on closing rather than continuing to vest on the original schedule. The 20% excise tax applies not to the $200,000 over the 3× threshold, but to the full amount above 1× base amount ($1,000,000), meaning $2,200,000 becomes subject to the 20% tax — a $440,000 excise cost, layered on top of ordinary income tax, in this illustrative scenario. That gap between $2,900,000 and $3,200,000 — a swing that can be caused by something as routine as an accelerated vesting clause — is the entire reason 280G modeling happens well before signature, not after. Our fully worked calculation, including how base amount itself is derived, is laid out in detail in golden parachute payment calculation example.

Cutback vs. Gross-Up: How Companies Respond to a 280G Problem

Once a package is modeled and shown to cross the 3× threshold, a company has essentially two options, and the choice matters enormously to the executive's net outcome.

A gross-up has the company pay the executive an additional amount sufficient to cover the 20% excise tax (and the taxes on that additional payment itself), so the executive is made economically whole. Gross-ups were common in the 2000s but have become rare in newly negotiated agreements as institutional investors and proxy advisors have pushed back on the optics and cost.

A cutback (or "best-net" provision) instead reduces the parachute payments — trimming cash severance, equity acceleration, or both — down to just below the 3× threshold, so no excise tax applies at all. Some agreements specify a straight cutback to $2,999,999 of base-amount-equivalent value; more sophisticated agreements use a "best-net" formula that calculates whichever outcome — full payment with excise tax, or cutback below the threshold — leaves the executive with more money after tax, and applies that one automatically.

Which mechanism governs your agreement is one of the highest-leverage items to negotiate before a deal, not during one, because by the time a change of control is underway the clause is already fixed. The tradeoffs between these two structures, including how to model which one actually benefits you given your specific base amount and equity mix, are covered in cutback vs. gross-up 280G.

What Counts Toward the Parachute Total

The 3× calculation isn't limited to cash severance. It aggregates the present value of everything contingent on the change of control, which typically includes:

• Cash severance (often expressed as a multiple of salary plus bonus)
• Any bonus or incentive payment accelerated or paid out due to the transaction
• The value of unvested equity — stock options, RSUs, or performance shares — that accelerates on closing rather than continuing to vest
• Continued benefits, such as health coverage, valued over the severance period
• Certain non-compete or consulting payments tied to the transaction

Accelerated equity vesting is frequently the single largest component of a CIC package's total value, and it is often the piece that pushes an otherwise modest cash severance multiple over the 280G line — accelerated equity vesting is, in fact, by far the largest component of most CEO change-of-control packages, per Alvarez & Marsal's 2022 analysis. That analysis also found that the most common CEO cash-severance multiple in change-of-control agreements falls in the 2–2.99× compensation range (Alvarez & Marsal, 2022), a range broadly consistent with earlier findings that CEO change-of-control cash severance typically runs around 3× salary plus bonus, with other named executive officers closer to 2–3× (CompensationStandards.com, 2007).

Because equity acceleration can move so much value in a single event, and because its present-value calculation for 280G purposes involves its own set of IRS assumptions, it deserves separate attention — see equity acceleration on acquisition for executives for how that piece is typically valued and negotiated.

Where This Shows Up at the Negotiating Table

280G rarely arrives as its own negotiation. It shows up embedded inside three more familiar conversations: setting the cash severance multiple, deciding what happens to unvested equity on a sale, and reviewing whether the employment agreement includes any tax-related protection at all.

An executive who understands the 3× threshold going in can ask sharper questions during each of those conversations. Does the agreement specify cutback or gross-up, or is it silent? If silent, what happens by default under the plan documents? Is the base amount calculation based on trailing W-2 income that reflects a depressed early-career year, understating true exposure? Does the equity acceleration clause trigger on signing or on closing, and does that timing shift the present-value calculation? None of these are legal-advice questions in the sense of requiring a specific answer here — they are the kind of specifics that should be confirmed with tax counsel or the company's own 280G advisor before any agreement is signed — but knowing to ask them, and roughly where the numbers are likely to land, is the difference between negotiating from a benchmarked position and finding out the answer after the wire transfer.

This is also where a documented, source-cited view of comparable change-of-control structures earns its keep. Knowing that most CEO CIC cash multiples cluster in the 2–2.99× range, per Alvarez & Marsal's 2022 findings, gives an executive a defensible anchor when a company's opening offer sits well outside that band — a very different conversation than negotiating off instinct alone. For the broader negotiation context beyond 280G specifically, executive severance package negotiation covers how CIC terms fit into severance discussions overall.

Pricing Your Own Change-of-Control Exposure

The math above is deliberately simplified. A real 280G analysis involves precise base-amount rules, present-value discounting of accelerated equity under IRS Section 1.280G-1 methodology, and reasonable-compensation arguments that can shift the numbers meaningfully — all of which should be run by qualified tax counsel or the company's 280G advisor before any transaction closes, using your actual compensation history and equity terms rather than round illustrative figures.

What an executive can do independently, well before a deal is on the table, is understand where their own severance multiple and equity acceleration terms sit relative to typical market structure — and whether the agreement even specifies a cutback or gross-up mechanism in the first place. The Change-of-Control Multiple Benchmark Workbook is built for exactly that groundwork: mapping your current cash severance multiple and equity acceleration terms against disclosed market structure, so that when 280G modeling does happen, you're walking in with a documented sense of whether your terms are typical, aggressive, or worth renegotiating before the next change-of-control clause is drafted around your name.