How Much Should a Small Business Spend on Marketing? (UK 2026 Guide)

Ask ten small business owners what they spend on marketing and you will get ten different answers — everything from “nothing, it’s all word of mouth” to “far too much, and I’m not sure any of it works.” Neither extreme is a strategy. The businesses that grow steadily are the ones that decide on a number, spend it on purpose, and check what it bought them.

This guide gives you that number: how much of your revenue should go to marketing in 2026, where UK small businesses typically put it, what you can do for free, and how to build a simple budget you will actually stick to.

Most UK small businesses should spend between 5% and 10% of their annual revenue on marketing. A new business pushing hard for growth may need 10% or more, while an established local firm with steady word-of-mouth referrals can often get by on 3–5%. The right figure for you depends on your growth goals, your industry, and how much free marketing you are already doing.

The 5–10% Rule, Explained

The most quoted benchmark in small business marketing comes from the U.S. Small Business Administration, whose long-standing guidance is that businesses under $5 million in revenue should spend around 7–8% of gross revenue on marketing. It is a rule of thumb, not a law — but it is a useful starting point because it ties your spending to what you can afford.

Here is what those percentages look like in pounds:

Notice how manageable the “steady” column looks for a small firm — around £200–£400 a month on £50k–£100k of revenue. That is the point of the percentage approach: it keeps marketing affordable in lean months and lets it grow automatically as you do.

What UK Small Businesses Actually Spend

Surveys of larger companies tend to land in a similar range. The CMO Survey — run by Duke University’s Fuqua School of Business with Deloitte (see the CMO Survey) — has in recent years reported average marketing budgets of roughly a tenth of company revenue across the businesses it tracks. Small firms are not large firms, but it is reassuring that independent research keeps pointing to the same neighbourhood: somewhere around 5–10%.

In practice, spending varies by type of business:

• Micro-businesses and sole traders often spend well under 5%, because the owner’s time — networking, social media, asking for referrals — does most of the work for free. That is fine while it works, but it caps growth at the owner’s spare hours.
• Local consumer businesses (trades, salons, cafés, clinics) usually need the higher end of the range, because they compete for attention every single week and customers choose largely on visibility and reviews.
• B2B and specialist firms can often spend less as a percentage, because a handful of good clients is worth more than thousands of clicks — but what they spend must be targeted precisely.

The honest truth: most small businesses underspend, not overspend. Marketing is usually the first thing cut when cash is tight, which is exactly when new customers are hardest to win.

Where the Money Should Go in 2026

A budget is only half the question. The other half is allocation — and small businesses waste the most money by spreading a small budget across too many channels. Pick two or three and do them properly.

A sensible default split for a small budget: most of it on the one or two channels your customers actually use, a smaller share on your website and email list (assets you own), and nothing at all on channels you cannot measure. If you are not sure which channels fit, our beginner’s guide to digital marketing for small businesses walks through each one in plain English.

Marketing You Can Do for £0

Before spending a pound, squeeze the free channels dry. For many local businesses these alone can fill the diary:

1. Claim and complete your Google Business Profile. It is free, it puts you on the map, and for local searches it matters more than your website. Add photos, opening hours, and every service you offer.
2. Ask for Google reviews — every week. Make it a habit: after every happy job, send the review link. Reviews are the cheapest trust signal in local marketing.
3. Post on one social platform consistently. One platform done well beats four done badly. Show real work, real customers, real premises — phone photos are fine.
4. Build an email list from day one. Every customer, every quote, every enquiry goes on the list (with permission). Emailing past customers costs nothing and converts better than any ad.
5. Ask for referrals directly. “Do you know anyone else who needs this?” is free, takes ten seconds, and most happy customers are glad to help — they just need prompting.

Build Your 2026 Marketing Budget in 5 Steps

Here is the whole exercise, doable in an afternoon:

1. Start with a revenue number. Use last year’s actual revenue, or a realistic forecast if you are new. Multiply by your percentage (start with 7% if you are unsure).
2. Pick your growth mode. Steady and profitable? Use 5%. Actively growing? Use 7–8%. New, or pushing hard into a new area? Budget 10% or more.
3. Split it 60/30/10. Put 60% into channels already proven for you, 30% into one serious growth bet (for example, your first proper Google Ads campaign), and 10% into experiments you are willing to lose.
4. Track one number: cost per enquiry. However the enquiry arrives — call, form, message — write down where it came from and what you spent. This single habit will improve your marketing more than any course.
5. Review every quarter. Kill what costs more per enquiry than a customer is worth to you. Double down on what works. Marketing budgets are living documents, not annual vows.

4 Budget Mistakes That Burn Small-Business Cash

• Paying for ads before the website converts. Sending £500 of ad clicks to a slow site with no clear contact button is setting money on fire. Fix the website first.
• “Boosting” posts with no targeting. A boosted Facebook post shown to everyone reaches no one in particular. Either learn the ad platform properly or don’t spend.
• Doing five channels badly instead of two well. A £300 monthly budget split five ways buys nothing anywhere. Concentrate it until one channel clearly works.
• Not tracking where enquiries come from. If you don’t ask every customer “how did you hear about us?”, you are budgeting blindfolded.

FAQs: Small Business Marketing Budgets

What percentage of revenue should a small business spend on marketing?

Between 5% and 10% of annual revenue is the standard guidance. Use around 5% to maintain steady trade, 7–8% for active growth, and 10% or more if you are new or pushing aggressively into new markets.

How much does marketing cost per month for a UK small business?

On £100,000 of annual revenue, 5–10% means roughly £415–£835 per month. Many micro-businesses spend far less by doing the free channels well — Google Business Profile, reviews, social media, and email — and adding paid ads only when the free ones are maxed out.

Can I market my small business for free?

Yes — and you should start there. A complete Google Business Profile, a steady stream of reviews, one consistent social media presence, an email list, and direct referral requests cost nothing and are enough to grow many local businesses.

Should a new business spend more on marketing than an established one?

Usually, yes. A new business has no reputation, no reviews, and no repeat customers, so it must buy attention until word of mouth takes over. Budget 10% or more in the early years, then ease back as referrals start doing the heavy lifting.

Conclusion

There is no magic number, but there is a sensible range: 5–10% of revenue, spent deliberately on two or three channels you can measure, reviewed every quarter. Start with the free channels, fix your website before you pay for traffic, and track what every pound brings back. Do that for a year and marketing stops feeling like a gamble — it becomes the most predictable part of your business.

Want more? Browse our Marketing category for practical guides on SEO, social media, email, and winning local customers.