What a realistic marketing budget looks like for a UK SME

“How much should we be spending on marketing?” is one of the questions we are asked most often, and the honest answer is: it depends. But “it depends” is not much help when you are trying to plan a year. So this guide gives you real reference points, a simple way to set a figure that fits your business, and the mistakes that quietly waste most SME marketing budgets.

None of this is a rule. It is a starting framework you can adjust with judgement — which is exactly how a good marketing partner would approach it with you.

The rough benchmark, and why it is only rough

A commonly cited figure is that businesses spend somewhere between 5% and 10% of revenue on marketing. Established firms defending a steady position tend toward the lower end; younger firms trying to grow tend toward the higher end, and sometimes well beyond it. As a sanity check the range is useful. As a target it is dangerous, because it ignores everything that actually determines what you should spend.

Four things that should move your number

1. Your stage and ambition

A business that is happy at its current size and gets most of its work through referrals needs only enough marketing to stay visible and replace natural attrition. A business trying to double in two years needs to invest ahead of the revenue it wants — which means spending a higher share of today’s smaller number.

2. Your margins

What you can afford to spend to win a customer depends on what that customer is worth to you over time. A firm with high margins and repeat business can spend far more to acquire each new client than a firm working on thin margins and one-off sales. Before you set a budget, know your customer lifetime value, even approximately — it is the ceiling on what acquisition can cost.

3. Your market’s competitiveness

In a crowded market with well-funded competitors, the cost of being seen is simply higher. Advertising auctions price attention, and if everyone around you is bidding, a small budget disappears without a trace. It is often better to spend enough to matter in one channel than to spread a thin budget across five and register in none.

4. What you are starting from

A business with a strong website, a healthy review reputation and an engaged mailing list has already done the expensive foundational work, and its ongoing budget can be modest. A business starting from a broken site and no digital presence has to fund that groundwork first. Do not compare your budget to a competitor without knowing which of these positions each of you is in.

How to actually set the figure

Rather than starting from a percentage, we prefer to start from the goal and work backwards:

• Decide the outcome you need — for example, 40 new customers this year.
• Estimate what each one is worth to you over the life of the relationship.
• Work out a defensible cost per customer you can afford, given your margins.
• Multiply to get a ballpark acquisition budget, then add the foundational costs (website, content, tools) you cannot avoid.

The number you reach this way is grounded in your economics rather than someone else’s rule of thumb. Sense-check it against the 5–10% band, and if it falls wildly outside, understand why before you either panic or relax.

Where SME budgets quietly leak

In our experience the problem is rarely the size of the budget. It is where the money goes:

• Spreading too thin. A little on everything means enough on nothing. Concentration usually beats coverage for smaller budgets.
• Paying for activity, not outcomes. A supplier billing for hours of “social media management” with no link to any commercial result is a cost centre, not an investment.
• Neglecting existing customers. Retaining and re-selling to current customers is far cheaper than acquiring new ones, yet most budgets ignore it entirely. Our guide on keeping customers coming back covers this in depth.
• No measurement. If you cannot see which spend produced which result, you cannot move money from what fails to what works — so you keep funding both. See measuring marketing without a data team.

Fixed scope beats open-ended hours

Whatever your budget, insist on knowing what you are getting for it before you commit. We price work as fixed amounts for defined deliverables rather than open-ended hourly rates, so the figure you approve is the figure you pay. That discipline protects your budget from the slow expansion that turns a modest project into an uncomfortable invoice.

If you would like help setting a marketing budget that fits your actual goals and economics, get in touch or start a project in your portal for an itemised quote, usually within one working day.