How much should you invest in digital marketing?
By Miguel Maio · ·
TL;DR
- There's no universal percentage - the right budget depends on stage, goals, margins and how fast you need results.
- Common benchmarks put marketing at roughly 5-15% of revenue, higher for growth-stage and consumer brands.
- Split by horizon: paid buys speed, SEO and GEO compound slowly, content feeds both.
- Let unit economics (CAC vs LTV) - not a round number - set the ceiling.
"How much should we spend on digital marketing?" is the wrong question asked alone. The honest answer isn't a percentage - it's a function of where you are, what you're trying to do, your margins, and how quickly you need to see returns. But there are useful anchors.
The benchmarks (and their limits)
Cross-industry surveys typically land marketing budgets somewhere around 5-15% of revenue, skewing higher for growth-stage companies and consumer brands, lower for established B2B. Treat that as a sanity check, not a target: a startup buying its first market may spend far more as a share of revenue, and a mature brand with strong organic far less. The number describes averages, not your situation.
Split by time horizon, not just channel
The smarter cut is by how fast each euro pays back:
- Paid (Google Ads, social) - buys demand now; results are immediate but stop when you stop paying.
- SEO and GEO - compound slowly and keep paying after the work; slower to start, cheaper over time.
- Content - the raw material that feeds SEO, GEO, social and paid landing pages.
- Analytics - the small spend that makes the rest measurable and defensible.
A common early mistake is going all-in on paid because it's fast, and never building the compounding assets that lower cost per acquisition later.
Let the unit economics decide
The real ceiling is your CAC vs LTV: what it costs to acquire a customer versus what they're worth over time. If you can profitably acquire customers, the question flips from "how much can we afford?" to "how fast can we scale while staying profitable?" That's a much better problem - and the one a sound strategy and measurement setup is built to answer.
How I actually allocate
My allocation doesn't come from a magic percentage. I like to frame it with the 70/20/10 rule: 70% on what's proven (safe bets), 20% on what shows traction and can grow (growth), and 10% on experimental bets (moonshots). Within that, I'm guided by seasonality - which I read from Search campaigns - I work content gaps in parallel, and across the conversion calendar I run remarketing and complementary media, paid and organic. No single channel is usually self-sufficient. And one thing I learned in WPP Media agencies: offline - TV, radio - has an impact on Search and on the holistic strategy; knowing how to articulate offline and digital, on top of seasonality and content gaps, is what separates a plan that compounds from one that trips over itself. To prioritize and communicate campaign decisions, I use a simple ETI score - the average of Effort, Time and Impact on a 1-to-10 scale. It forces me to justify every move and makes the client conversation objective, instead of opinion versus opinion.
Key data
| Marketing as % of revenue | 7,7% |
|---|---|
| Paid media (% of budget) | 30,6% |
| Paid media (% of revenue) | 2,4% |
| CMOs with insufficient budget | 59% |
Survey skews toward large enterprises.
Sources: Gartner — 2025 CMO Spend Survey
Common mistakes and how to do it right
Budget conversations go wrong in predictable ways. Avoid these:
| Avoid | Do |
|---|---|
| ✗ Copying a competitor's percentage | ✓ Sizing budget to your stage, goals and unit economics |
| ✗ Going all-in on paid for speed | ✓ Balancing paid speed with SEO/GEO that compound |
| ✗ Spending without measuring CAC and LTV | ✓ Letting unit economics set the ceiling |
| ✗ Cutting analytics to save money | ✓ Protecting the small spend that makes everything measurable |
Tools I use and recommend
- Google Analytics 4Behaviour and conversion measurement.
- Google Search ConsoleOrganic performance, coverage and field Core Web Vitals.
- SimilarWebTraffic estimates and competitive benchmarking.
- SemrushKeywords, site audit and competitor analysis.
Sources
Frequently asked questions
What is the 70/20/10 budget rule?
A way to split spend by risk: 70% on what already works and returns predictably, 20% on growth bets with potential but less tested, and 10% on experimental moonshots. It protects the return while leaving room to find the next channel. Digital Strategy service →
What is the ETI score?
A simple metric I use to prioritize and communicate decisions: I score each initiative on Effort, Time and Impact on a 1-to-10 scale and combine them into one value. It makes campaign management transparent and defends choices with a criterion, not an opinion. Google Ads service →
Is there a standard percentage of revenue for marketing?
Benchmarks cluster around 5-15%, but it's only a sanity check. Stage, margins and goals matter far more than any average. Digital Strategy service →
Should I spend on SEO or paid first?
Often both, in balance: paid for immediate demand, SEO and GEO to compound and lower long-term cost per acquisition. SEO vs GEO →