How to Advertise on Google Ads: How It Works and How to Set a Budget (2026)

Google Ads is one of the few channels where a business can start today and receive enquiries today. SEO takes months, while a well-built search campaign can make the phone ring from day one. That same speed means a badly built campaign can burn through a budget just as fast.

This guide explains how to advertise on Google Ads: how the platform works, how to set up an account, what each campaign type is for and how to work out a budget. We will not quote a made-up price, because Google Ads cost varies hugely by industry, location and competition. Instead, we show you the logic to calculate your own budget, then list the 8 mistakes we see most often in ad accounts.

How does Google Ads work?

Every search is an auction

When someone searches on Google, an instant auction runs among the advertisers targeting that keyword. It is not simply won by whoever pays most. To decide the order of ads, Google looks at your bid alongside the quality of your ad, the experience on your landing page, your assets (sitelinks, phone number, location and so on) and the context of the search.

The practical result is that a business with a more relevant ad and a better landing page can appear above a competitor while bidding less. In Google Ads, quality directly saves money.

Quality Score

In search campaigns, Google shows a Quality Score from 1 to 10 for each keyword. It indicates how relevant your ad is to people searching for that keyword and is made up of three components:

Cost per click (CPC)

In search campaigns you usually pay per click. Your maximum bid is the most you are willing to pay for a click; the amount you actually pay is often lower, because the system charges what is needed to keep you ahead of the advertiser below you. Quality differences are why different businesses can pay very different CPCs for the same keyword.

How to use Google Ads: setting up your account

1. Use a Google account that belongs to the business. Do not open the account with an employee's personal email; access and historical data should stay with the company.
2. Watch out for the simplified setup. For new accounts Google often suggests a simple campaign flow with automated settings. If you want to control targeting and keywords yourself, choose the advanced (expert) setup option.
3. Enter payment and billing details. Set the billing address, tax information and payment method correctly during setup.
4. Set up conversion tracking before the campaign. Define the actions that matter to you: form submissions, phone calls, WhatsApp clicks, purchases or bookings.
5. Link Google Analytics 4. Connect the accounts so you can see what ad visitors do on your site and share data between the two.
6. Start your first campaign small and focused. Begin with the one service or product group that brings the most sales, then expand as you collect data.

Google changes these screens from time to time, so for current details on setup and settings the Google Ads Help Centre is the most reliable source.

Campaign types: which one does what?

Google Ads offers many campaign types. These are the four businesses use most:

For most service businesses the starting point is a search campaign, because you reach people who are already searching for what you offer. Performance Max is powerful but relies heavily on Google's automation; without accurate conversion data it is flying blind. Display and YouTube campaigns are better for creating demand and reminding people about you.

Google Ads cost: how to set a budget

Google Ads has no fixed price list. The cost of a click depends on your industry, target location, competitors' bids and the quality of your ad. A search for "commercial lawyer" and one for "handmade soap" can have very different click costs. So rather than guessing a budget, work backwards from your goal.

1. Work out what a customer is worth. How much gross profit does an average sale or project leave? What is the most you can spend to win one customer?
2. Find the estimated cost per click. Keyword Planner inside Google Ads shows estimated bid ranges for your target keywords.
3. Estimate your conversion rate. How many visitors does it take to get one form or call? If you have no data, the goal of the first month is to collect it.
4. Do the maths. Divide your monthly target number of enquiries by your conversion rate, then multiply the resulting clicks by the average CPC. As a hypothetical example: if one in 30 visitors fills in a form and you want 10 enquiries a month, you need about 300 clicks. Your budget is 300 multiplied by the CPC for your keywords.

This gives you a realistic starting point. If the result is higher than you can afford to spend per customer, either move to cheaper, more specific keywords or raise the conversion rate of your landing page. Note also that Google may exceed your daily budget on some days, but it is designed not to charge more in a month than your daily budget multiplied by the average number of days in a month.

Why advertising without conversion tracking burns budget

In an account without conversion tracking, all you can see is clicks. You cannot tell which keyword brings customers and which only attracts the curious. Part of your budget almost inevitably goes on keywords that never produce a sale, and you have no way of knowing which.

The bigger problem is that Google's automated bidding strategies, such as "Maximise conversions" or target cost per acquisition, need conversion data to learn. Without it, the system does not know what to optimise for and focuses on collecting clicks. The effect is even stronger in automation-led campaigns such as Performance Max.

The actions you should track depend on your business:

• Quote or contact form submissions,
• Clicks on the phone number or WhatsApp button,
• Purchases and add-to-cart events on an e-commerce site,
• Moving to the booking engine or completed bookings on a hotel website.

These are tracked with the Google tag (gtag), Google Tag Manager or conversions defined in GA4 and imported into Google Ads. After setup, test each conversion yourself once: fill in the form and check that it appears in the reports.

The landing page is half the ad

Every paid click is like a ticket you have bought for someone to enter your landing page. If the page does not persuade them, the money is wasted. A good landing page:

• Repeats the ad's message. Someone who clicks an ad for "corporate website design in Bursa" should land on the page about that service, not the home page.
• Loads quickly. Much ad traffic comes from mobile, and a slow page loses visitors before they see anything. The steps in our guide to speeding up your website turn directly into savings here.
• Asks for one clear action. Get a quote, call, book. Do not leave visitors choosing between ten options.
• Builds trust. Client references, real project photos, a clear address and phone number, customer reviews.

Because the landing page is also part of Quality Score, a good page both lifts conversions and lowers your cost per click.

8 common Google Ads mistakes

1. Not using negative keywords. A shop targeting "furniture" may also pay for searches like "furniture maker jobs" or "second-hand furniture". Review the search terms report regularly and add irrelevant searches to a negative list.
2. Launching without conversion tracking. As explained above, you spend money without seeing which clicks work.
3. Sending every ad to the home page. This forces visitors to search again for what they wanted.
4. Overlooking the location setting. Check whether you target people located in your area or anyone showing interest in it. For a local service business, this setting prevents wasted clicks from other cities.
5. Leaving the Display Network switched on in a search campaign. This option may be ticked by default during setup and moves part of your search budget into display ads with very different performance. Turn it off unless it is a deliberate choice.
6. Applying Google's recommendations without question. Some account recommendations are useful; others mainly increase spend. Check the auto-apply settings in particular.
7. Splitting the budget across too many campaigns. Spreading a small budget over ten campaigns means none collects meaningful data. Start with a few focused campaigns.
8. Setting and forgetting, or judging too early. An ad account needs weekly attention. At the same time, switching a campaign off after two days of data interrupts the learning phase of automated bidding.

Should you manage Google Ads yourself or hire a specialist?

Running a search campaign for one service on a small budget is something you can learn if you set aside regular time. But as budgets grow, campaign types multiply and conversion tracking gets more complex, mistakes become more expensive. The real value of a specialist is having someone who checks every week where the money goes and cuts unproductive spend early.

The long-term partner to advertising is organic visibility. Keywords that bring sales in your ads are also the most valuable SEO targets; we cover this in What is SEO? and how to rank on the first page of Google. That is why Fietto Creative's digital continuity service runs ad management and SEO as one plan.

Before you start advertising, make sure the site you will send clicks to is ready. Our free Site X-Ray audit checks your speed, mobile usability and the trust elements that affect conversions. If you would like us to review your account with you, get in touch.

Frequently asked questions