Running Google Ads on a Genuinely Small Budget

There is a floor below which Google Ads stops being a marketing channel and becomes a lottery ticket. Nobody selling advertising likes to name it, because the answer is sometimes “your budget is too small and you should spend it elsewhere”. So let us do the arithmetic first and the tactics second.

Do the sum before you open an account

You need three numbers. Two you can look up, one you have to assume.

What a click costs for your terms in your area. Keyword Planner gives you top-of-page bid estimates. Set the location to where you actually work, not the whole country. Note the higher of the two figures it shows, because that is closer to what you will pay in a competitive auction.

How many clicks it takes to produce an enquiry. This is the assumption. Nobody can give you a reliable industry figure, and any article quoting a single conversion rate for “service businesses” has invented it. What is defensible is the reasoning: a well-matched page, a high-intent search and a simple contact route sit at one end of the plausible range; a homepage and a broad search sit at the other. The gap between those two situations is large enough that assuming the optimistic end before you have evidence is how budgets get wasted.

What a customer is worth to you. Not the value of one job — the value of the relationship, including repeat work, at the margin you actually make.

Now multiply. Suppose a click costs £4 and one enquiry arrives for every twenty clicks. That is £80 per enquiry before any wasted spend at all. If one enquiry in three becomes a customer, you are at £240 to win one. Against a £3,000 lifetime value that is an excellent trade. Against a £200 job it is a loss you cannot advertise your way out of.

Then look at the same sum from the budget end. At £80 an enquiry, a £300 monthly budget buys you somewhere around three or four enquiries in a good month — and, crucially, almost no information about which keyword, ad or page produced them.

Why small budgets struggle to improve

This is the part that gets left out. It is not only that a small budget buys fewer customers. It is that it buys almost no learning.

Google’s automated bid strategies improve by observing conversions. Google has historically published minimum conversion volumes before target-based strategies behave predictably, and while the stated requirements have loosened over the years, the underlying principle has not: a system optimising on three or four conversions a month is mostly reacting to noise. It cannot tell a good Tuesday from a real pattern.

The same applies to you. With four enquiries a month, you cannot tell whether ad A beat ad B, or whether the landing page change helped, or whether last month was worse because of your campaign or because of the weather. You are managing on anecdote.

That is the honest case for a floor. Not a specific pound figure — it depends entirely on your cost per click, which varies enormously between a rural gardener and a London solicitor — but a principle. If your budget divided by your realistic cost per enquiry does not produce enough enquiries a month to see a pattern, the campaign cannot be optimised. It can only be run.

If you are going to run it anyway, strip it back

Small budgets fail from dilution more than anything else. Every setting below is about concentrating spend until it is dense enough to mean something.

One campaign. One or two ad groups. Not one campaign per service. Pick the single service with the best margin and the clearest buying intent, and buy only that.

Exact and phrase match only. Broad match needs conversion data to steer with, and you do not have any yet. Revisit this once you do.

Tight geography. A radius around where you genuinely travel. Set the location option to people in or regularly in that area rather than the default that includes people merely interested in it.

Turn off search partners and display expansion in the campaign’s network settings. On a large budget these are worth testing. On a small one they spread thin money thinner.

Restrict the schedule to when you answer. If nobody picks up on Sunday, do not buy clicks on Sunday. The ad schedule is a blunt instrument and that is fine here.

Bottom-of-funnel terms only. Words that indicate someone is ready: “near me”, the town name, “emergency”, “quote”, “hire”, “cost of” combined with the service. Leave the informational searches to your website’s content, which does not charge you per visit.

Bid strategy: maximise clicks with a maximum CPC cap, or manual bidding. Not a target cost per action. A target strategy with no conversion history to learn from will either spend erratically or barely spend at all. Move to conversion-based bidding when you have consistent conversions, not before.

One landing page, built properly. You cannot afford to send this traffic to a homepage.

Call assets, and consider call-only ads if the phone is how your customers actually make contact. Removing a step removes a place to lose people.

Then judge it over ninety days rather than seven. Small accounts need long windows to say anything. Checking the numbers daily on a £10-a-day budget produces anxiety, not insight.

What to spend it on instead

If the sum says advertising does not work at your budget, that is not a dead end. It is a redirection. In rough order of return for a small local business:

Your Google Business Profile and your reviews. For local trades this is frequently the highest return available and it costs time rather than money. Complete every field, add real photographs, post updates, and build a habit of asking every satisfied customer for a review.

The pages you already have. A service page that explains one job properly, aimed at the town you work in, keeps earning after you stop paying. It is slower than advertising — considerably slower, and anyone telling you otherwise is selling — but it compounds. Search visibility is the long game that makes the short game cheaper.

Your existing customers. The cheapest enquiry is from somebody who already bought. A list of past customers and a reason to contact them beats a small ad budget in almost every service business.

Saving it up. Three months of a £300 budget spent as one concentrated £900 month teaches you more than nine months of dribbling. You get enough clicks in a short window to actually see which searches produce work — and then you know whether the channel is worth funding properly.

One last thing about management fees

If you are spending £300 a month on ads and paying £250 a month to have them managed, most of your marketing budget is being spent on the management of a budget too small to manage. That is not a comment on any particular agency; it is arithmetic.

Below a certain spend, the sensible arrangements are a one-off build and handover, or a light-touch quarterly review, or no ads at all for now. Anyone unwilling to tell you which of those applies is not being straight with you — and if you would like a straight answer about your own numbers, ask for one before you get started.