Quick Definition
Marketing Efficiency Ratio (MER) is a holistic marketing metric that measures the efficiency of total marketing spend by comparing total revenue to total marketing expenditure. MER is calculated by dividing total revenue by total marketing spend (including all marketing costs: salaries, advertising, tools, events, content, etc.). Unlike ROAS which measures efficiency of specific advertising channels, MER provides a company-wide view of marketing efficiency. MER is particularly useful for B2B companies with complex marketing programs that include both paid and organic efforts. MER is sometimes called "blended ROAS" because it blends all marketing efforts into a single efficiency metric.
Why It Matters
MER is critical for B2B companies because it provides a holistic view of marketing efficiency that accounts for all marketing efforts, not just paid advertising. MER enables companies to: evaluate overall marketing efficiency, compare marketing efficiency over time, justify total marketing budgets to leadership, and make strategic decisions about marketing investment. For B2B companies with significant organic marketing efforts (content, SEO, social), MER provides a more complete picture than ROAS alone. MER is particularly valuable for companies with complex marketing programs where attributing revenue to specific channels is difficult.
How It Works
MER is calculated using the formula: MER = Total Revenue / Total Marketing Spend. The numerator is total revenue (typically for a specific period like monthly, quarterly, or annually). The denominator is total marketing spend, which should include all marketing costs: marketing team salaries, advertising spend, marketing tools and software, events and sponsorships, content creation costs, agency fees, and all other marketing-related expenses. MER should be calculated consistently over time to track trends. MER can be calculated at different levels: company-wide, by business unit, or by product line.
Real-World B2B Example
A B2B SaaS company selling project management software calculates MER: total revenue for Q1 is $2,000,000, and total marketing spend is $400,000 (including $150K in salaries, $100K in advertising, $50K in tools, $50K in events, $50K in content). MER = $2,000,000 / $400,000 = 5:1 (or 5x). This means they generate $5 in revenue for every $1 spent on marketing. They track MER quarterly and find it improved from 4:1 to 5:1, indicating improved marketing efficiency.
Common Use Cases
- Evaluating overall marketing efficiency
- Comparing marketing efficiency over time
- Justifying total marketing budgets
- Making strategic marketing investment decisions
- Benchmarking marketing efficiency against peers
- Evaluating marketing program effectiveness
Common Mistakes to Avoid
- Not including all marketing costs in the denominator
- Using inconsistent time periods for numerator and denominator
- Comparing MER across companies with different business models
- Not tracking MER trends over time
- Using MER without considering growth rate and other factors
Frequently Asked Questions
How is MER different from ROAS?
ROAS measures efficiency of specific advertising channels (revenue / ad spend). MER measures efficiency of total marketing spend (revenue / total marketing costs). MER is broader and includes all marketing costs, not just advertising.
What should be included in MER calculation?
Include all marketing costs: marketing team salaries, advertising spend, marketing tools and software, events and sponsorships, content creation costs, agency fees, and all other marketing-related expenses. Be consistent in what you include over time.
What is a good MER?
There is no universal "good" MER: it depends on business model, margins, growth stage, and industry. A MER of 3:1 or higher is generally considered good for B2B, but the key is whether MER is sustainable and profitable given your business model. Track MER trends over time.