Paid search puts your business in front of people the moment they type a question into Google. For instance, they search for “cordless drill comparison”, and your ad appears at the top of the results. They click, and you pay a small fee for that click.
The difference between a paid search campaign that pulls its weight and one that quietly drains your budget comes down to how well you understand what’s happening behind the scenes.
Here’s how paid search works in practice, what it costs, the metrics worth watching, and the honest answer to whether it’s a good fit for your business.
What is Paid Search?
Paid search is online advertising where businesses bid to have their ads shown on search engine results pages when users type in specific keywords. It works by matching your ad to a search query, then charging you on a pay-per-click (PPC) basis. You’re charged each time someone clicks, not when your ad is shown.
You’ll see paid search ads above the organic listings on Google, marked with a small “Sponsored” label. The most common platform is Google Ads, but Microsoft Advertising (which runs ads on Bing) works the same way.
The model rewards intent. You’re not interrupting someone scrolling through social media. You’re showing up when they’ve already raised their hand by searching for what you offer.
How Does Paid Search Work, Step by Step?
Paid search runs on a live auction. Every time someone searches, the platform decides in milliseconds which ads to show and in what order. Here’s what’s happening on your side to make that auction work in your favour.
1. You choose keywords
Keywords are the search terms you want your ad to appear for. “Tax accountant Brisbane”, “buy ergonomic office chair”, “how to fix a leaking tap”. You pick the ones that match what your customers are searching for and the intent behind those searches.
Good keyword research is the foundation. Pick the wrong terms and you’ll either pay too much for traffic that doesn’t convert, or miss out on the searches that would have brought you customers.
2. You write the ad and set up the landing page
Each ad has a headline, a description, and a link. You’ve got a tight character limit, so every word needs to earn its place. The ad needs to match the keyword (someone searching “buy cordless drill” should see an ad about cordless drills, not the general hardware store homepage).
The landing page is where they end up after clicking. It needs to deliver on what the ad promised. If the ad says “free quote in 24 hours”, the landing page better make getting that quote obvious and quick.
3. You set a bid and a budget
You tell the platform the most you’re willing to pay per click and what you want to spend per day. The bid is your maximum, not what you’ll always pay. The platform runs an auction every time someone searches, and you only pay what’s needed to beat the next-best bidder.
Daily budgets give you a hard ceiling so you can’t accidentally burn through a month’s spend in a weekend.
4. You set your targeting
This is where paid search gets sharp. You can narrow your ads by location, time of day, device, language, and audience characteristics. A Brisbane café doesn’t need ads showing in Perth. A B2B service might want ads running only during business hours. A mobile-first business might bid higher for phone clicks.
5. The platform runs the auction
When someone searches, the platform looks at three things to decide whose ad shows and where. Your bid amount. The relevance of your ad to the search. The quality of the landing page you’re sending people to.
A higher bid alone won’t win the top spot. Google rewards relevance, which is why a well-written ad with a strong landing page can beat a competitor with deeper pockets.
6. Someone clicks, you pay
The user clicks your ad, lands on your page, and you’re charged. The cost depends on the competitiveness of the keyword. “Mesothelioma lawyer” can cost hundreds per click. In contrast, “Local bakery delivery” might be a couple of dollars.
7. You watch the data and adjust
Every click is a data point. Which keywords convert. Where the clicks come from. What turns into actual customers and what doesn’t. The campaigns that work over time are the ones being actively managed, not the ones left on autopilot.
What Are the Benefits of Paid Search?
Paid search earns its place in a marketing mix because it does a few things very well.
Speed. Your ad can be live within hours. That’s faster than SEO, faster than content marketing, faster than almost any other channel.
Targeting precision. Few channels let you reach the exact person searching for your exact offer in your exact location at the exact moment they’re ready to buy.
Measurable results. You can see what every dollar buys. Clicks, conversions, cost per acquisition, return on ad spend. The numbers are there, and they don’t lie.
Scalability. Start with a small budget. Scale up the campaigns that work. Cut the ones that don’t. You’re not locked in.
Control. You decide where ads run, when, for whom, and at what cost. Pause anytime. Change everything in an afternoon.
The Five Metrics Worth Watching
A campaign isn’t working or failing based on a feeling. It’s working based on numbers. These are the ones to keep your eye on.
Click-through rate (CTR)
CTR is the percentage of people who saw your ad and clicked it. If 100 people saw the ad and 5 clicked, your CTR is 5%. A healthy CTR tells you the ad is hitting. A low CTR means the headline, the offer, or the targeting needs work.
Cost per click (CPC)
What you’re paying, on average, each time someone clicks. CPC varies wildly by industry. Legal and finance keywords are expensive. Most service businesses sit somewhere reasonable. The number itself matters less than whether the clicks turn into customers.
Conversion rate
The percentage of clicks that lead to whatever action you wanted. A purchase or form submission. A booking or a phone call. This is the metric that separates traffic from results. High CTR with low conversion rate usually means there’s a problem with the landing page, not the ad.
Quality Score
Google’s rating, from 1 to 10, of how relevant and useful your ad is. A higher Quality Score lowers your CPC and lifts your ad position. It’s Google’s way of rewarding advertisers who write good ads and send people to good pages instead of just outbidding everyone.
Return on ad spend (ROAS)
For every dollar you put in, how much came back? A ROAS of 3 means you got $3 back for every $1 spent. ROAS is the real bottom line. Everything else is a step toward it.
Is Paid Search Right for Your Business?
Honest answer? It depends on three things.
What you’re selling. Paid search works best when people are actively searching for what you offer. A plumber, a dentist, an accountant, and an e-commerce store with specific products. If your offer is something people don’t yet know they need, paid search will struggle to do the heavy lifting on its own.
Where your website is at. A great ad sends people to a page on your site. If that page is slow, confusing, or doesn’t load well on a phone, you’re paying for clicks that go nowhere. The campaign and the site work as a pair. We’ve written more on this in our piece on whether your website helps or hurts your business.
Your appetite for testing. The campaigns that pay off are the ones being adjusted based on what the data shows. If “set and forget” is the goal, paid search isn’t the channel.
Paid search tends to work well for:
- Local services with urgent demand (plumbers, electricians, locksmiths, emergency repairs)
- Professional services with high lifetime customer value (legal, accounting, consulting)
- E-commerce stores with clear product categories
- B2B businesses targeting buyers who actively research solutions
- Event-driven businesses with time-sensitive offers
It tends to struggle for:
- Brand-new categories where no one is searching yet
- Pure brand awareness campaigns
- Very low-margin products where the maths doesn’t work
- Businesses that can’t quickly handle the leads or sales that come through
What to Think About Before You Start
A few things worth knowing before you put money into paid search.
Your budget shapes what’s possible
Smaller budgets can still work, particularly for niche keywords with less competition. But if you’re trying to compete in a crowded market on $500 a month, you’ll likely see ads run for a few hours a day and then disappear. Match your budget to the competitiveness of your keywords, or pick less competitive keywords to compete for.
Your landing page does half the work
The ad gets the click. The landing page gets the customer. We’ve seen campaigns transformed not by changing the ads, but by fixing the page they sent people to. Speed, clarity, mobile experience, and a clear next step. Get those right, and your conversion rate climbs without spending another cent on ads.
Results take time to settle
The first month of a campaign is rarely the best. Google’s algorithm needs data to optimise. You need data to know what’s working. Plan for at least 60 to 90 days of active management before judging the campaign’s real performance.
It’s one channel, not a strategy
Paid search captures demand that’s already there. It doesn’t create demand from nothing. The strongest results come when paid search runs alongside SEO, content marketing, email and a website that converts. Each does something the others can’t.
The platforms keep changing
Google updates Google Ads constantly. New ad formats, new bidding strategies, new automation, new requirements. What worked two years ago may not be the best approach today. Either keep up with it yourself, or work with someone who does.
Where Paid Search Fits
Paid search is one of the most measurable, fastest-moving channels in digital marketing. It rewards businesses that pay attention to the numbers, write ads that match what people are searching for, and send those people to pages worth landing on.
That said, paid search doesn’t replace the rest of your marketing. It works hardest when it sits alongside a strong website, good SEO, and a clear picture of who you’re trying to reach.
If you’re weighing up whether paid search makes sense for your business, or you’ve got a campaign running that isn’t pulling its weight, we’d be glad to take a look.
