You tried Google Ads once. Someone set it up, the card got charged every week, and a month later you could not say whether a single customer came from it. The dashboard showed clicks and something called impressions. Your phone showed nothing unusual. You switched it off and decided Google Ads is a racket.

Here is the honest answer. Google Ads works well for some businesses and is a waste of money for others, and the difference is mostly about the business, not the ads. It tends to pay off when people search for what you sell at the moment they need it, when one new customer is worth a fair amount to you, when you serve a clear area, and when you can tell which calls came from the ads. If any of those is missing, fix that first or spend your money somewhere else.

1. When Google Ads tends to pay off

Google Ads puts your business at the top of Google when someone searches for words you choose. You pay when someone clicks. That makes it a good fit when the search itself says "I want to buy this, soon".

It usually works best when these things are true:

The need is urgent. A burst pipe, a broken furnace in January, a cracked tooth, a locked-out car. People in a hurry call one of the first businesses they see. They do not scroll through ten articles.
The job is worth a lot. If one new customer brings in a large invoice, or keeps coming back for years, you can afford to pay for several clicks that go nowhere before one turns into work.
People search for it in plain words. "Roof repair near me", "emergency dentist", "bathroom renovation Scarborough". If customers do not search for what you sell, there is nothing to put an ad in front of.
You serve a clear area. You can tell Google to show your ads only to people in the neighbourhoods or towns you actually serve, so you are not paying for clicks from people you could never help.

Picture a roofer after a big storm. Homeowners are typing "roof leak repair" into their phones with water dripping into a bucket. A roofer whose ad appears there, with a phone number that gets answered, can book jobs the same day. One repair can cover a lot of clicks.

2. When it usually does not

Google Ads also has clear bad fits. Be honest with yourself here, because this is where most of the wasted money goes.

The job is small and one-off. If a new customer is worth very little to you and rarely comes back, the cost of winning them through paid clicks can easily be more than you earn from them.
You have no room for more work. If your calendar is full for the next two months, ads just create leads you have to turn away or keep waiting. That money is better saved for your slow season.
You cannot tell where calls came from. If the phone rings and nobody asks how they found you, and there is no way to see which calls and forms came from the ads, you are guessing. Guessing is how people end up paying for months with nothing to show for it.
People do not search for it. A brand-new kind of product, or something people buy on impulse, often gets more from social media, where you can show it to people who did not know they wanted it.
The website lets them down. If the ad sends people to a slow page with no clear way to call, you pay for the click and lose the customer. Check why your website is not getting leads before you spend anything.

Say you run a small gift shop and sell cards and candles. People rarely search Google for "birthday card shop near me" with their wallet out. Your money is probably better spent on your Google Business Profile, some good photos and a regular presence on Instagram.

3. Work out what a customer is worth before you spend a dollar

The most useful thing you can do before running ads costs nothing. Sit down and answer three questions:

What is one new customer worth to you? Not the first invoice only. If a dental patient stays for years, or a salon client books every six weeks, count that.
How many enquiries does it take to win one customer? Look at your own history. If you quote five jobs to win one, an enquiry is worth a fifth of a job to you.
How much would you happily pay to win one more customer? This is your ceiling. Write it down.

Once you have that ceiling, the question "is Google Ads worth it?" becomes a simple one: can ads bring you customers for less than that number? That is something you can test.

Picture a dental clinic. A new patient who stays for years is worth a great deal, so the clinic can afford to pay quite a lot to win one. Now picture a dog groomer with a full book of regulars. A new client is worth having, but the groomer cannot take many more, so the ceiling is low and the right budget is small.

4. Run a small, time-boxed test

Do not sign up for an open-ended monthly spend. Run a test with a start date, an end date and a budget you can afford to lose.

A sensible test looks like this:

One service, one area. Pick the job you most want more of and the area you most want to work in. Do not advertise everything everywhere at once.
Only the searches that mean "I want to hire someone". Searches like "furnace repair Etobicoke" are buyers. Searches like "how does a furnace work" are mostly curious people. Keep your ads to the first kind.
A page that matches the ad. If the ad says "Emergency furnace repair", the click should land on your furnace repair page, with your phone number at the top, not on your homepage.
A set length. Long enough to get a fair number of enquiries, usually a couple of months for a local business. A single week tells you almost nothing.
A budget you decide in advance. Pick an amount you would be fine spending even if it brought nothing. That keeps the decision calm at the end.

Ad prices change by industry, area and season, and they have generally been rising, so nobody can tell you in advance exactly what a click will cost you. There is more on that in our note on rising search ad costs. That is exactly why a small test beats a big commitment.

5. Judge it by booked jobs, not clicks

At the end of the test, ignore most of the numbers in the ad account. Clicks and impressions are easy to get and say nothing about whether anyone paid you.

Before the test starts, set up a way to count the things that matter:

Calls from the ad. Google can show a separate phone number in your ads so you can count the calls they produce. At the very least, ask every new caller how they found you and write it down.
Forms from the ad. Your website should be able to tell which enquiries came from an ad click.
Jobs booked. This is the number that counts. Go through the enquiries and mark which ones turned into paying work.

Then do the sum. Divide what you spent by the number of customers you won. If that is under the ceiling you wrote down in step 3, Google Ads is worth it for you, and you can grow it carefully. If it is over, look at why before you give up: the wrong searches, the wrong page, or calls that went to voicemail. If you have fixed those and it is still over, stop. That is a perfectly good answer.

Picture an online shop selling replacement parts for appliances. It can see every sale that came from an ad, right down to the product. That makes the sum easy, and the shop can quickly drop the products that lose money and keep the ones that pay.

What to do first

Write down what one new customer is worth to you and the most you would pay to win one.
Make sure you can tell where calls and forms come from, even if it is just asking every caller.
Pick one service and one area, set a budget and an end date, and run a small test.

If you would rather have someone run that test properly and report on booked jobs rather than clicks, Google Ads is part of our growth retainer. If you want to know first whether your website and tracking are ready for ads at all, our website and marketing audit will tell you what to fix before you spend.

Is Google Ads worth it for a small business?