"How much does digital marketing cost, and how much should we spend?" has a boring true answer - it depends - but useful benchmarks and allocation rules exist. Here is how to set a digital marketing budget you can defend, and how to spend a small one without wasting it.
The benchmark ranges
The most commonly cited rule: established businesses spend 5-10% of revenue on marketing to maintain position, and 10-20%+ to grow aggressively or launch; B2C typically spends more than B2B, and competitive categories (property, legal, e-commerce) more than niche ones. For early-stage businesses with little revenue, budget instead against customer economics: decide what a customer is worth and what you can afford to pay to acquire one, then fund enough activity to test whether you can hit that acquisition cost.
What the budget must cover (not just ads)
Under-planned budgets die of hidden costs. The full stack:
- Media spend - the ads themselves
- People - staff time, freelancers or agency fees
- Tools - email platform, SEO software, design, scheduling, analytics
- Creative and content - copy, design, video, landing pages
- Measurement - proper tracking setup, without which the rest is guesswork (how to track ROI)
A workable rule of thumb for paid campaigns: no more than half the total on media, the rest on the people, creative and measurement that make media perform.
Allocating across channels
A sensible default is 70/20/10: 70% on proven channels that demonstrably return, 20% on promising channels being scaled, 10% on experiments. New businesses without a "proven" bucket should run deliberately small tests across two or three carefully chosen channels and concentrate budget as evidence arrives, rather than spreading it evenly forever.
Spending a small budget well
Under roughly £1,000 a month, discipline beats breadth: one channel matched to existing demand, self-serve creative, tracking installed on day one, and a bias toward compounding assets (SEO, email list, content) that keep working after the spend stops. The commonest small-budget mistake is trying to look like a big brand - thin presence everywhere, results nowhere.
Review quarterly, reallocate ruthlessly
A budget is a hypothesis. Quarterly, compare each channel's cost per acquisition and lead quality against targets, then move money toward evidence - the practice covered in measuring marketing success.
Budgeting confidently requires understanding what the money actually buys. The Digital Marketing in Practice course at London School of Business UK builds that understanding hands-on - enquire here.