Tiga Digital Small Business Guide
Google Ads for Small Business
A practical guide to deciding whether Google Ads is right for your business, setting realistic budgets, building campaigns correctly and turning paid search into a profitable source of customers.
Introduction
Google Ads can be incredibly effective. It can also waste money very quickly.
Google Ads gives small businesses access to something extremely valuable: the ability to appear in front of potential customers at the exact moment they are actively searching for a product or service.
That makes paid search fundamentally different from many other forms of advertising. You are not necessarily trying to interrupt someone and create interest from nothing. In many cases, the demand already exists.
But access to that demand comes at a price. Every click costs money, competition can be intense and a badly structured campaign can spend a significant budget without generating enough profitable business in return.
The aim of this guide is not to convince you that every small business should use Google Ads. It is to help you decide whether Google Ads makes commercial sense for your business and, where it does, understand how to approach it properly.
Throughout the guide we will focus on the numbers that matter: conversion rates, acquisition costs, revenue, margins and return on advertising spend.
Click-through rates and impressions have their place, but successful paid advertising ultimately comes down to whether you can acquire customers at a cost your business can afford.
Guide contents
Use the chapter links below to move through the guide.
Is Google Ads right for your business?
Before thinking about keywords, adverts or bidding strategies, there is a more important question: should your business be using Google Ads at all?
Google Ads is sometimes presented as a universal customer acquisition tool. Put money into the platform, send visitors to your website and generate sales.
In reality, some businesses are naturally much better suited to paid search than others.
Understanding that before you start can save thousands of pounds.
The first question: does search demand already exist?
Google Search advertising works particularly well when people already know that they need the product or service you provide.
Someone searching for “emergency plumber Cambridge”, “commercial solicitor near me” or “buy road bike online” is expressing clear intent.
Your job is not necessarily to persuade that person that they have a problem. Their search has already told you that.
Your job is to convince them that your business is the right solution.
The clearer the searcher's intent, the easier it becomes to connect advertising spend with a commercially valuable action.
Businesses that often suit Google Ads
High-intent services
Trades, professional services, legal, healthcare, education and specialist services where customers actively search when they need help.
Ecommerce
Businesses selling products people already search for, particularly where Shopping campaigns and product feeds can be used effectively.
High-value enquiries
Businesses where a single customer or qualified lead can be worth hundreds or thousands of pounds.
Clearly defined offers
Businesses with products or services that are easy to understand, search for and connect to an appropriate landing page.
When Google Ads becomes more difficult
Google Ads can still work in difficult markets, but some situations make profitability harder to achieve.
- There is very little search demand for what you offer.
- Your customers do not know the product or solution exists.
- Your margins are extremely low.
- The average sale is small relative to the cost of acquiring a customer.
- Your website converts poorly.
- You cannot reliably track leads or sales.
- You do not have enough budget to generate meaningful data.
None of these automatically means you should avoid Google Ads. They do mean that you need to think carefully about the economics before launching.
Start with customer value
The most important number is not your cost per click.
It is how much a customer is worth to your business.
Imagine you run a service business where the average new customer generates £1,000 in revenue.
If your gross profit from that customer is £500, paying £100 to acquire them through Google Ads may be extremely attractive.
Now imagine a different business where the average transaction is £30 and gross profit is £10.
Paying £20 to acquire that same customer would be unsustainable unless there is significant repeat purchase value.
A £10 click can be excellent value if it produces a £5,000 customer. A 50p click can be expensive if it never generates a profitable sale.
Work backwards from the numbers
Before launching a campaign, establish roughly what you can afford to pay for a customer.
You do not need a perfect financial model. Even a basic estimate is much better than starting with an arbitrary advertising budget.
- average sale value
- gross margin
- repeat purchase rate
- customer lifetime value
- lead-to-sale conversion rate
- acceptable customer acquisition cost
A local service business
Assume an average completed job produces £800 in revenue and £400 in gross profit.
The business decides it is comfortable spending up to £100 to acquire a new customer.
If one in four qualified enquiries becomes a customer, the business can afford to pay approximately £25 for a qualified lead.
That £25 target now gives the campaign something commercially useful to work towards.
Instead of asking “Are £4 clicks expensive?”, the question becomes: “Can we generate enough qualified leads from those clicks to keep the cost per customer below £100?”
Your website is part of the Google Ads campaign
Businesses often treat advertising and website performance as separate things.
They are not.
Google can send highly relevant prospects to your site, but it cannot force them to contact you or make a purchase.
If the landing page is confusing, slow, unconvincing or difficult to use, the campaign may struggle regardless of how well the Google Ads account itself is managed.
- Is it immediately clear what you offer?
- Is the primary call to action obvious?
- Does the page match the search that brought the visitor there?
- Is there enough proof to establish trust?
- Is the site easy to use on a phone?
- Can the visitor contact or buy from you without unnecessary friction?
Improving conversion rate can completely change the economics of Google Ads.
If a landing page converts 2% of visitors and you improve that to 4%, you have effectively doubled the number of conversions generated from the same amount of traffic.
Can you actually handle more business?
There is little value in generating 100 enquiries if nobody answers the telephone, leads sit unanswered for three days or your team cannot fulfil the additional work.
Can you measure the outcome?
Google Ads becomes much harder to optimise when you do not know which clicks produce meaningful results.
- form submissions
- telephone enquiries
- bookings
- purchases
- revenue
- qualified leads where possible
Google Ads suitability scorecard
Tick every statement that is true for your business.
Tick the statements above to assess your Google Ads readiness.
Have you understood the fundamentals?
Answer the four questions below, then check your score.
1. When is Google Search advertising generally at its strongest?
2. Which figure is most useful when deciding whether a click is expensive?
3. A business can afford £100 to acquire a customer and closes one in four qualified leads. Roughly what is its maximum target cost per lead?
4. Which statement about the landing page is most accurate?
Chapter takeaway
Google Ads works best when there is existing search demand, sufficient customer value, a website capable of converting visitors and reliable tracking. Before worrying about campaign settings, establish whether those commercial foundations are in place.