Digital Advertising for Small Businesses: A Practical Guide with Budgets from €300 a Month

Digital advertising for small businesses has an advantage no other medium offers: you can start with €300 a month, track every euro and switch off whatever isn’t working. It also carries a matching risk: set up badly, it burns through your budget without bringing in a single customer.

We run Ads and lead generation campaigns for small businesses across very different sectors. This is what we tell any company before it spends its first euro.

Which channel to choose for your business

• Google Ads (search): for existing demand. If people are already searching for your service (“car hire Malaga airport”), this is your channel. Clicks cost more, but they arrive with buying intent.
• Meta Ads (Instagram and Facebook): for creating desire and capturing leads with precise targeting. Ideal for local services, hospitality and visual products.
• TikTok Ads: cheap reach and a young audience; it demands native video creatives that don’t look like ads.
• YouTube and display: brand awareness, once your lead-generation channels are already covered.

The practical rule: first capture the demand that already exists (search), then create more of it (social). Doing it the other way round is expensive.

Real budgets and what to expect from each

• €300-600/month: one tightly focused local search campaign. Enough to test whether the channel works for your business.
• €600-1,500/month: search + remarketing + one social lead campaign. The sweet spot for most small businesses.
• €1,500-5,000/month: a multichannel strategy with creatives refreshed every month and weekly optimisation.

Professional management comes on top of that. Is it worth paying for? With Fetajo Rent a Car, combining brand and search campaigns on Google Ads with its own creatives (such as the 40th anniversary campaign) keeps the cost per booking well below what intermediary channels charge. The gap between a well-managed and a poorly managed account usually pays for the management several times over.

And an honest warning: advertising amplifies, it doesn’t fix. If your website doesn’t convert, you need to fix the website first.

The three mistakes that burn the most budget

First: campaigns with no conversions set up. If Google doesn’t know what a customer means to you (a call, a form, a purchase), it optimises for cheap clicks that are worth nothing. Setting up tracking before you switch anything on is non-negotiable.

Second: trying to cover too much. A small business with €500 a month can’t compete on twenty keywords across an entire country; it can dominate five specific searches in its own region. In every account we’ve audited, focus beats dispersion.

Third: leaving the account on autopilot. Platforms favour their own revenue with automations that widen audiences and raise bids; without a weekly review, your budget gets diluted in irrelevant traffic. Digital advertising is a living channel: you prune it, water it and measure it. Treat it like a billboard you put up and forget, and you pay for a billboard and harvest nothing.

Digital advertising for small businesses: frequently asked questions

How much should a small business invest in digital advertising?

As a starting point, between €300 and €1,500 a month in media spend depending on sector and competition, plus management. What matters is to start focused, track your cost per lead and scale what proves profitable.

Google Ads or social media: which is better?

It depends on whether your customer is already looking for you. With active demand, go for Google Ads; to spark interest or capture local leads, use Meta. Most small businesses end up combining both, with different weightings.

How long does it take to see results?

Search campaigns generate clicks from day one, but they need 4-8 weeks of data to optimise. Judging an account with less than a month of history is premature.

What is a good cost per lead?

One that leaves you a margin: if a customer brings you €500 in profit and you close 1 in 5 leads, you can pay up to €100 per lead. Working out that number before you invest saves you a lot of grief.

If you want to know what your budget can deliver, we’ll estimate it with data from your sector before you spend a euro: get in touch.