What brand drift costs, and how to work it out yourself
Brand drift never shows up as a line item. Here is a simple way to put a number on it for your own business.
Brand drift never shows up as a line item. It shows up as campaigns that need more money to do the same work, customers who cost more to win, and loyal customers who quietly come back less often. If it reaches the revenue line, it may have been costing money for some time.
Here is a simple way to build a scenario for your own business. Every input is an assumption you choose, and the result is an estimate, not a measured loss.
Start with what you spend. Marketing budgets average 7.7% of company revenue, according to Gartner's 2025 CMO Spend Survey. For a $50 million company that is about $3.85 million a year. For a $300 million company, about $23.1 million.
Estimate how much of it points at the wrong brand. This is the hard part, so be honest. Marketers have long estimated that about a quarter of their budgets goes on channels and strategies that don't work (a Rakuten Marketing survey of 1,000 marketers, reported by eMarketer in 2018). That figure covers every cause, not only drift, so don't borrow it. Pick your own share. If customers describe you very differently from your campaigns, it may be high. If they mostly match, it is low.
Multiply by the months it goes unnoticed. This is the part most companies never calculate.
A worked scenario. Every figure below follows from assumptions: the 7.7% budget average, a 10% share aimed at the wrong brand, and the months before it is noticed. None of it is a measured loss caused by drift.
| Company revenue | Marketing budget (7.7%) | Scenario cost per month at 10% | Scenario: caught at 6 months | Scenario: caught at 18 months |
|---|---|---|---|---|
| $50M | $3.85M | $32,083 | $192,500 | $577,500 |
| $300M | $23.1M | $192,500 | $1.16M | $3.47M |
| $1B | $77M | $641,667 | $3.85M | $11.55M |
In this scenario, a year of waiting at the $300 million company would cost about $2.3 million in marketing alone. It leaves out slower customer acquisition, lost repeat business, and the bigger fix needed if the problem shows up in revenue. The exact numbers matter less than the shape: in any scenario like this, the cost grows with every month it goes unnoticed. The cheapest moment to find drift is early, while it is still a conversation rather than a rebrand.
How to notice sooner. Watch three things every quarter:
- How often your best customers come back or renew.
- The share of new customers who arrive by referral.
- Whether customers describe you in the same words your marketing uses.
If the first two slip while the third drifts apart, treat it as a reason to investigate. Falling numbers have many possible causes. Drift is one to test, not a conclusion.
The full paper, with the method and its limits, is free to download: The Financial Case (PDF).
Sources: Gartner, 2025 CMO Spend Survey · eMarketer, "Marketers Waste About One-Fourth of Their Budgets" (2018)