Google Ads is not automatically worth it, and it is not automatically a waste of money. For a small business the answer comes down to a handful of numbers you probably already know: what a customer is worth, how many enquiries you turn into work, and roughly what a click costs in your area. Put those together and you can see, before spending a pound, whether Google Ads has a realistic chance of paying for itself.
The quick test
Maximum you can afford per click = gross profit per customer × enquiry rate × close rate
If the result is comfortably above what clicks cost in your trade and area, Google Ads is worth testing. If it is below, fix one of the three numbers first, or look at other channels.
Example: a domestic electrician
Worked example. CPC range from Trade2Base 2026 UK trade benchmarks.
At £10 break-even and clicks of £3 to £8, this electrician has room for profit. If the close rate fell to 25%, break-even would drop to £5 and the margin would be tight. If the job value were £150, Google Ads would be hard to make work on paid search alone.
When Google Ads is usually worth it
- People search for what you do. Plumbers, electricians, roofers, locksmiths, solicitors and dentists all have steady search demand. If nobody searches for your service, no amount of budget helps.
- A customer is worth a few hundred pounds or more, either in one job or over time through repeat work.
- You can handle the enquiries: someone answers the phone, follows up forms and gets quotes out quickly.
- You have a page that converts: a clear service page with a phone number, reviews and a short form.
- You can give it a fair trial: around £300 to £500 a month for at least two to three months.
When it usually is not worth it (yet)
- Very low job values with no repeat business. If a customer is worth £40 profit, a £5 click needs a very high conversion rate to work.
- You cannot take on more work. Ads will not help a business that is already turning jobs away; raise prices instead.
- No way to answer calls. You pay for clicks whether or not anyone picks up.
- The website is not ready. A slow, unclear page wastes clicks. Fix it first.
- Expecting results in a week. Most accounts need several weeks of data before they settle.
What the benchmarks say
The largest published benchmark study comes from WordStream and LocaliQ, covering 13,474 US search campaigns between April 2025 and March 2026. For home and home improvement businesses it found a median click-through rate of 6.47%, a median cost per click of $8.33, a conversion rate of 8.05% and a cost per lead of $90.92. Across all industries, the median cost per lead was $66.69, and the report noted cost per lead fell for the first time in five years. These are US figures, so treat them as a sense of scale rather than UK prices.
For UK trades, published 2026 estimates put most clicks between £3 and £15, with a minimum sensible test budget of £300 to £500 a month (Trade2Base). One agency's aggregated UK account data put the average home services click at £3.12 and cost per lead at £38.05 (Ridley Digital, 2026).
How Google Ads compares with the alternatives
| Channel | Speed | Cost model | Main drawback |
|---|---|---|---|
| Google Search Ads | Days to weeks | Pay per click | Costs continue while you advertise |
| Google Local Services Ads | Weeks (verification) | Pay per lead | Only some trades; less control |
| SEO | Months to years | Time or agency fees | Slow; few new pages reach the top 10 within a year |
| Google Business Profile | Weeks to months | Free | Depends on reviews and proximity |
| Directories (e.g. Checkatrade) | Weeks | Membership and/or per lead | Leads often shared with competitors |
| Facebook and Instagram ads | Days to weeks | Pay per impression or click | Lower intent; leads need qualifying |
On SEO timing: an Ahrefs study published in 2025 found that only 1.74% of newly published pages in its main sample reached Google's top 10 within a year (6.11% in a filtered sample), and the average page ranking first was about five years old. SEO is worth doing, but it is not a quick fix. Google Ads is the fastest way to appear at the top while organic rankings build.
How to give Google Ads a fair test
- Pick one service with good margins and steady demand.
- Target only the area you serve and the hours you can answer.
- Use phrase and exact match keywords and add negatives for jobs, DIY and services you do not offer.
- Send clicks to a page about that service, not the homepage.
- Track calls and forms properly, counting only genuine enquiries.
- Run for at least eight weeks and log every enquiry and outcome.
- Judge on cost per booked job against the profit per job.
What "worth it" looks like
A common rule of thumb in trade benchmarks is a return on ad spend of at least 3x as a minimum and 5x as solid, with a target cost per booked job of around 10 to 15% of job value (Trade2Base, 2026). Use these as a starting point, then set your own targets from your margins. A high-margin service can afford a lower return; a low-margin one needs more.
If you want to know what budget your business would need, read how much a UK local business should spend on Google Ads, and for what clicks cost, how much it costs to advertise on Google in the UK.
Frequently asked questions
Is Google Ads worth it for a small business in the UK?
It is worth testing when people search for your service, a customer is worth a few hundred pounds or more, you can answer enquiries and you can fund a fair test of around £300 to £500 a month for two to three months.
How do I know if Google Ads will be profitable?
Multiply gross profit per customer by the share of visitors who enquire and the share of enquiries that book. That is your break-even cost per click. If typical clicks in your trade cost less, Google Ads can pay.
How long does Google Ads take to work?
Ads can bring enquiries within days, but most accounts need six to eight weeks of data before cost per lead settles and you can judge results fairly.
Is SEO better than Google Ads for a small business?
They do different jobs. SEO builds free traffic over months or years; Google Ads brings enquiries quickly but costs money for as long as it runs. Many small businesses use Ads while SEO grows.
Related guides
- How Much Should a UK Local Business Spend on Google Ads?
- Google Ads vs SEO for Local Businesses
- Google Local Services Ads UK
Sources
- WordStream / LocaliQ, Google Ads Benchmarks 2026 (13,474 US campaigns)
- Trade2Base, "Google Ads budget for tradespeople" (8 June 2026)
- Ridley Digital, UK Google Ads benchmarks 2026
- Ahrefs, "How long does it take to rank in Google?" (May 2025)
Want to know if Google Ads would pay for your business?
Ask for a free review. We will look at your service, area and numbers and tell you honestly whether Google Ads is worth testing, and on what budget.