It is one of the most common questions small business owners ask when they start exploring paid advertising: how much do you actually need to spend to get results? The frustrating truth is that there is no universal figure, but there is a framework for arriving at the right number for your business.
This guide covers how Meta’s auction-based ad system works, what a realistic budget looks like at different stages of growth, how to align your spend with achievable objectives, and which performance metrics actually tell you whether a campaign is delivering.
What Are Paid Social Ads?
Paid social ads are adverts placed directly on social media platforms, shown to audiences you define rather than people who already follow you. In the UK, Facebook and Instagram are the dominant channels for small business advertising, both managed through Meta Ads Manager. Other options include LinkedIn, Pinterest, and Snapchat, each with different audience demographics and cost structures.
The key difference between paid and organic social is control. Organic content reaches your existing audience and depends heavily on platform algorithms. Paid advertising lets you target by location, age, interests, behaviours, and even custom audiences built from your own customer data.
If you are coordinating paid ads across search and social, paid social sits within a broader performance marketing strategy and should be planned accordingly.
How Much Do Facebook and Instagram Ads Cost?
Meta operates on a real-time auction model. Every time an ad slot becomes available, competing advertisers bid for it, and your budget determines how often you win those auctions and how many people you reach. There is no fixed cost per impression or click.
Here are realistic UK benchmarks across different budget levels:
| Budget Level | Daily Spend | Monthly Spend | What to Expect |
|---|---|---|---|
| Entry level | £5 | ~£150 | Very limited reach, suitable for creative testing |
| Small business | £10 to £20 | £300 to £600 | Consistent local visibility, early data gathering |
| Growth stage | £30 to £50 | £900 to £1,500 | Broader reach, lead generation viable |
| Scaling | £50+ | £1,500+ | Multiple campaign objectives, retargeting, conversions |
Actual costs vary significantly by sector, audience size, and the competitiveness of your targeting. A local service business reaching people within a ten-mile radius will generally achieve a lower cost per result than a national brand competing in a saturated market.
What Is a Realistic Minimum Budget?
Meta permits daily budgets as low as £1, but at that level your campaign will rarely exit the learning phase, the period during which Meta’s algorithm needs sufficient data to optimise delivery. A practical minimum for meaningful results is around £10 per day, or approximately £300 per month.
At this level, do not expect significant volume straight away. The value of early spend lies in the data it generates: which audiences respond, which creatives drive clicks, and whether your offer resonates. That intelligence is what enables you to scale spend with confidence rather than guesswork.
Treat the first four to six weeks as a structured test, not a revenue-generating campaign.
Setting Goals That Match Your Budget
Misaligned expectations are one of the most common reasons paid social campaigns underperform. A monthly budget of £300 is unlikely to generate dozens of direct conversions, but it can reasonably achieve:
- Measurable brand awareness growth within a defined local area
- Traffic to a specific landing page for testing messaging
- Social proof through page growth and engagement
- Audience data for future retargeting campaigns
As spend increases, you can shift campaign objectives from awareness to consideration and eventually to conversion. The structure of your campaign, specifically the objective you select in Ads Manager, should reflect where your budget sits in this progression.
Advertising spend is also a legitimate business expense. HMRC provides guidance on what marketing costs are allowable for self-employed people and business owners on the GOV.UK expenses for the self-employed page.
What Metrics Should You Watch?
Once your campaigns are live, focus on these performance indicators:
Cost Per Click (CPC): The average amount you pay for each ad click. For Meta campaigns in the UK, a CPC between £0.50 and £1.50 is broadly typical for small businesses, though figures vary considerably by industry and creative quality.
Click-Through Rate (CTR): The proportion of people who see your ad and click through. A CTR above 1% generally indicates that your creative and targeting are reasonably well aligned.
Cost Per Lead (CPL): If your campaign objective is lead generation, this is the cost of each enquiry or sign-up. For local service businesses, a CPL under £15 to £20 is often achievable, though sector and offer competitiveness affect this significantly.
Return on Ad Spend (ROAS): The revenue generated per £1 of ad spend. Relevant primarily for e-commerce, a ROAS of 2x or above is a reasonable benchmark to work towards.
Avoid optimising for vanity metrics such as reach and impressions. High visibility without downstream engagement or conversions tells you very little about whether your spend is justified.
Should You Try Other Platforms?
Meta remains the most cost-accessible starting point for most small UK businesses, but it is not the only viable channel. TikTok ads have grown substantially in reach and performance, particularly for brands targeting audiences under 35. The ad platform operates on a similar bidding model to Meta, but demands short-form video creative and a noticeably different content approach.
LinkedIn is worth considering for B2B advertisers, though its cost per click is considerably higher than Meta. Unless your offering is clearly professional or enterprise-focused, it is generally more efficient to start with Facebook and Instagram and expand from there.
Do You Need an Agency to Run Paid Social Ads?
For very modest budgets, self-managed campaigns through Meta Ads Manager are a reasonable approach. The platform is accessible and Meta provides reasonable onboarding guidance. However, as spend increases, the cost of poor decisions grows with it. Mis-structured campaigns, broad targeting, or weak creative can exhaust a monthly budget in days with little measurable output.
Engaging a team that specialises in paid social media management means campaigns are built with the right objective structure, audience segmentation, and creative strategy from the outset. For many small businesses, the efficiency gains outweigh the management cost once spend exceeds a few hundred pounds per month.
A Practical Starting Point
Start at £10 per day, run for a full month, and review performance against the metrics above before making any significant changes. Do not make judgements in the first two weeks; Meta’s algorithm requires time to optimise delivery, and early data is often unrepresentative.
Paid social advertising is most effective when treated as an iterative, data-driven investment rather than a short-term spend. The businesses that get the best results are those that commit to testing, learning, and scaling methodically.
Frequently Asked Questions
How much should a small business spend on Facebook ads per month? A realistic starting point for a small UK business is around £300 per month (approximately £10 per day). This provides enough data to test audience and creative variables before committing to higher spend.
Can I run Facebook ads for £5 per day? Technically yes, but at £5 per day your campaign is unlikely to gather sufficient data to exit Meta’s learning phase efficiently. It may suit very localised targeting, but most small businesses will see meaningfully better results from £10 per day or above.
How do I know if my paid social ads are working? Prioritise cost per click, click-through rate, and cost per lead over reach and impressions. If clicks are coming in at a commercially viable cost and those clicks are generating enquiries or sales, the campaign is performing.
Is it worth hiring an agency to manage paid social ads? For very small budgets, self-management is often reasonable. As spend increases, professional management helps avoid structural mistakes, improves audience targeting, and generally delivers a stronger return from the same budget.
