Here's a budgeting method that sounds rational on the surface but has a fundamental flaw baked right into its logic: set your marketing budget based on what your competitors are spending.
That's competitive parity budgeting in a sentence. And I'll be honest, I have a complicated relationship with it. On one hand, it gives marketers a benchmark when they have no other basis for setting a budget. On the other hand, it outsources one of the most important strategic decisions a company can make to someone else's spreadsheet. Let me walk you through why this method exists, when it makes sense, and when it's a trap.
Competitive parity budgeting is a method of setting a marketing or advertising budget by matching the spending levels of key competitors. The Monash University Marketing Dictionary defines it as "setting a promotion budget to match competitors' outlays." The Digital Marketing Institute describes it as a strategy where "a company's advertising budget is determined based on the spending activities of the competition."
The underlying assumption is straightforward: if your competitors are spending $10 million on advertising, you need to spend somewhere in that neighborhood to maintain visibility, share of voice, and competitive presence. Spend dramatically less, and you risk being drowned out. Spend dramatically more, and you might be wasting money on diminishing returns.
According to the Corporate Finance Institute, competitive parity is one of four common advertising budget methods, alongside percentage-of-sales, objective-and-task, and affordable budgeting. Of these, competitive parity is the most externally-focused, building the budget from the outside in rather than from internal goals outward.
The process is more art than science, which is part of both its appeal and its limitation.
Before you can match competitor spending, you need to define who your competitors actually are. This is where many companies already go wrong. Your competitive set for budgeting purposes should be companies competing for the same customers in the same channels, not every company in your industry. A small regional bank doesn't need to match JPMorgan's advertising budget to compete effectively in its market.
This is the trickiest part. Unless competitors are publicly traded (and break out marketing spend in their financials), you're working with estimates. Common data sources include:
| Source | What It Tells You | Limitations |
|---|---|---|
| Public company filings (10-K, annual reports) | Total marketing/advertising spend, sometimes by segment | Only available for public companies; reporting categories vary |
| Industry reports (Gartner, Deloitte) | Average marketing spend as % of revenue by industry | Averages mask wide variation; data is typically 6-12 months old |
| Ad intelligence tools (Semrush, Ahrefs, Pathmatics) | Estimated digital ad spend, creative assets, channel mix | Digital only; estimates can be imprecise |
| Trade publications (AdAge, Adweek, MarketingDive) | Industry news, reported deal sizes, campaign budgets | Anecdotal; not systematically comprehensive |
| Competitive intelligence firms | Detailed spend analysis by category and channel | Expensive; data quality varies |
Once you've estimated competitor spending, you have three options:
Match: Spend roughly the same amount. This is pure competitive parity.
Proportional match: Adjust for company size. If you're half the revenue of your competitor, you might set your budget at 50% of theirs while maintaining the same percentage-of-revenue ratio.
Strategic deviation: Deliberately spend above or below competitive parity based on your marketing strategy. A challenger brand might spend above parity to gain market share. An established leader might spend below parity because brand equity provides organic visibility.
The cola wars are the most famous example of competitive parity budgeting in action. For decades, Coca-Cola and PepsiCo have closely monitored each other's advertising expenditures and maintained roughly equivalent spending levels. According to Buildd's analysis, "Coca-Cola may observe PepsiCo spending 10% of its revenue on advertising and set its budget similarly to maintain competitive visibility without overspending."