"How much should I invest in digital marketing?" is not answered with a percentage of revenue copied off the internet. It is answered working backward: revenue goal, real conversion rate, and the acquisition cost your margin can support.
How much to invest in digital marketing
The objective answer: enough to generate the number of opportunities your revenue goal requires, while respecting the maximum CAC your margin allows. Revenue percentages only work as a sanity check, typically between 5% and 15% for growing companies, more for aggressive acquisition operations.
Three ways to set the budget
- By percentage of revenue: fast and predictable, but disconnected from the goal.
- By competitive parity: spend what the competitor spends. Risky without the same margin numbers.
- By objective (recommended): starts from the sales goal and works backward to the required investment.
Calculating by objective, step by step
- Define the additional revenue goal for the period.
- Divide by the average order value to find the number of sales needed.
- Use the sales close rate to find the number of qualified leads needed.
- Use the site's conversion rate to find the required session volume.
- Multiply by the channel's average CPC to estimate the required investment.
- Add creative production, tools, and operations: that is also budget.
In the example below, amounts are in R$ (reais, Brazil's currency).
| Step | Variable | Example |
|---|---|---|
| Goal | Additional revenue | R$ 300,000 |
| Sales | Average ticket of R$ 15,000 | 20 sales |
| Leads | 20% close rate | 100 qualified leads |
| Sessions | 3% conversion | 3,333 sessions |
| Media | CPC of R$ 6.00 | R$ 20,000 |
The example is illustrative: the numbers need to come from your own history. If you do not yet have a reliable conversion rate, start with the measurement setup described in the guide to digital marketing metrics.
How to allocate the budget
Reference split for growing operations
- 60% to 70% in channels with proven return (bottom of funnel and remarketing).
- 20% to 30% in expansion: new audiences, channels, and formats.
- 10% in controlled experimentation, with budget you accept losing.
- A separate reserve for creative and page production: media without new assets plateaus.
The choice between channels should weigh search intent against discovery, a comparison detailed in the article Google Ads or Meta Ads.
When to increase, maintain, or cut
- Increase: CAC stable below the ceiling, and sales has spare capacity.
- Maintain: CAC rising but still within the limit, with a full pipeline.
- Cut: CAC above the ceiling for two consecutive cycles with no improvement in conversion.
Want an investment plan tied to your goal?
KCLOCK builds the acquisition architecture (funnel, pages, and media) starting from your revenue goal. Check out the strategic sales funnel service and request a diagnostic through the form.
Frequently asked questions about digital marketing budget
How much should a company invest in digital marketing?
The most reliable path is the reverse calculation: start from the revenue goal, use the average order value to find the number of sales needed, and multiply by an acceptable CAC.
What percentage of revenue should go to marketing?
Market ranges work as an initial reference, but the percentage only makes sense once validated against your real CAC and margin.
How should the budget be split across channels?
Prioritize capturing existing demand, keep a portion in demand generation, and set aside a fixed percentage for controlled testing.
When should I cut investment?
When the cost per qualified lead exceeds your CAC limit on a sustained basis and the cause is not a page, offer, or service issue.
About the author
Kauára Bertoluci
Partner and Head of Strategy & Growth, KCLOCK
Marketing, tracking, and CRO strategist. Leads positioning, funnels, paid media, and measurement across KCLOCK's projects.
- #planning
- #paid media
- #management
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