Most leaders who calculate it find the number sitting between 10 and 35% of annual revenue.
The first reaction is always: that cannot be right.
It is right.
Not because the organisation is failing. The companies this applies to are growing, or holding, or moving in the right direction by most of the measures they track. The teams are capable. The founders are working harder than they have ever worked. The results are just not proportional to the effort. Somewhere between what the organisation should be producing and what it is actually producing, something is being lost. It can be felt. It cannot be found on a spreadsheet.
That it cannot be found on a spreadsheet is exactly the problem.
The Stagnation Tax is the quantifiable annual cost of structural dysfunction in an organisation — typically 10 to 35% of annual revenue — accumulated across three buckets: lost opportunities, organisational inefficiencies, and zombie projects. It is not a metaphor. It is a calculable number. It is a structural tax, levied on every organisation that has outgrown its foundations without rebuilding them. Paid not in a single moment but in a thousand small frictions that never aggregate into a number anyone has to answer for. It accumulates quietly. It compounds. And by the time it becomes undeniable it has usually been running for years.
The research is specific about the scale.
McKinsey estimates companies lose up to 10% of annual revenue to poor strategy execution, and that is the conservative baseline, measuring only direct losses. Marakon Associates found that companies realise only 63% of the potential value of their strategies. The remaining 37% never materialises, not because the strategies were wrong, but because the organisations could not execute them. ClearPoint Strategy, analysing more than 20,000 strategic plans, found that professional services firms complete just 9.05% of their strategic initiatives.
Not 90%. Not 50%. Nine.
These numbers point at the same thing from different angles. An organisation that cannot execute its strategy is not just leaving value on the table. It is paying a recurring levy on every year it operates.
The 10 to 35% range is the convergence of this research applied across company sizes and contexts, broken into the three places the tax actually accumulates.
Lost opportunities
Lost opportunities are the most expensive and the hardest to quantify because they leave no trace. The client who went elsewhere. The hire who looked at the organisation and chose not to join. The investor who sat through the pitch, asked two questions, and did not request a follow-up. None of these appear in the revenue report. They happened before the revenue was possible.
The mechanism that produces them is visible, even when the losses are not. When the value proposition cannot be articulated consistently, when two people describe the same offering in ways that create different expectations, when the marketing message and the sales conversation tell different stories, the gap between what the organisation is and what it communicates costs every time it appears in front of a buyer. Ninety-one percent of strategy failures cite lack of shared strategic clarity as the root cause. Not lack of strategy. Lack of shared clarity about what the strategy is.
Organisational inefficiencies
Organisational inefficiencies are the component that feels most like ordinary business friction. The decision that took three weeks when three days was possible. The initiative that required four rounds of alignment before anyone could move. The senior leader pulled back into operational work that the layer below should have been able to handle.
These do not feel like a tax. They feel like Tuesday.
Gallup research on European employee engagement puts the productivity impact of disengagement at 18 to 34% lower output per person. Applied to a company of 35 people at average European salaries, that is between €250,000 and €500,000 annually in productive capacity that exists on paper and does not appear in results. It does not show up as a cost. It shows up as growth that did not happen.
Zombie projects
Zombie projects are the most politically complicated component, which is why they are also the most common and the longest-running.
A zombie project is not a failed project. A failed project ends. A zombie continues, absorbing budget, consuming attention, appearing on someone’s priority list, without producing returns that justify its existence. The CRM implementation in progress for fourteen months. The conference the company attends because it always has. The website refresh started when the strategy changed and never finished when the strategy changed again.
PMI research found that 60% of projects are not aligned to the organisational strategy at all. Not failed strategic initiatives. Initiatives that outlived the conditions that made them relevant, and that nobody has made the decision to end.
Gartner found that employee willingness to support change fell from 74% in 2016 to 38% in 2022, not because people became more resistant to change, but because the average employee experienced ten planned enterprise changes in 2022, most of which did not complete. Every zombie project is depleting the capacity the next real initiative will need.
The mechanism underneath all three
Three buckets. One mechanism underneath all of them.
An organisation that has outgrown the systems it is running on, operating on tacit knowledge, assumed shared understanding, and undocumented rationale that works until it does not. The founder knows what the priorities are, why they are the priorities, how decisions should be made. That knowledge is real. The problem is that it exists in one person and the organisation needs it to exist in a system.
The tax compounds because the gap does not stay the same size. Each year the organisation operates without addressing it, new people join without the founder’s accumulated context, new priorities are set without the framework that makes them legible, the distance between what the founder holds and what the system holds widens.
The number is between 10 and 35% of annual revenue. Most organisations that calculate it find it at the high end.
But the number is not the most useful way to feel the weight of what it is describing.
Try this instead.
If your founder or CEO was unavailable for a month, genuinely unavailable, not occasionally reachable: what would your organisation look like? Which decisions would stall? Which conversations would nobody be able to have? Which priorities would become unclear because the person who holds the logic for them was not in the room?
The answers to those questions are not a people problem. They are not a management problem. They are a map of exactly where the Stagnation Tax is running in your organisation right now.