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How to Maximise PPC ROI: Trends and Best Practices
Gianluca Catinella, Director, Ad Restore LtdPublished on 6 min read
PPC return is what a campaign earns compared with what it costs, and for most businesses it’s decided by a short list of levers rather than clever tricks. This guide sets them out in the order that matters: measurement first, because nothing else can be judged without it, then bidding, match types, budget, landing pages, and finally reporting on the numbers that predict profit rather than the ones that merely look busy.
Google’s help pages linked here were read on 14 September 2026. Google changes them, and its bidding features, without notice, so check the linked page before relying on a detail.
At a glance
Measure first
Conversion-based bidding learns from the conversions you record.
Bid to your data
Conversion strategies need conversions to learn from.
Control the searches
Match types and negatives decide what you pay for.
The page converts
Doubling the conversion rate is often easier than halving the cost per click.
Report on profit
Cost per lead and per sale, not clicks and impressions.
On this page9 sections
Measure conversions before you optimise anything
Google’s Smart Bidding strategies (such as Maximise conversions and Target CPA) learn from conversions. If the conversion tag is missing, paused or firing on the wrong event, the account is optimising towards the wrong thing, or towards nothing. Before touching bids, confirm that the actions that matter to the business, such as a form submission, a booked call or a purchase, are recorded as conversions, that they’re set as primary, and that the numbers in Google Ads agree with what the business actually received.
In our experience, measurement problems are the most common reason a well-built campaign appears to fail.
Match the bidding strategy to the data you have
Conversion-based strategies such as Maximise conversions and Target CPA need a steady flow of conversions to learn from; with too few, they starve. A new or low-volume account usually does better on Maximise clicks with a sensible bid limit, or on manual bidding, until there are enough conversions each month for automation to work with. Set that limit with care: Google warns that if your CPC bid limits are too low, the strategy may not be able to reach your goal.
In our experience, moving to a conversion strategy too early can leave an account that barely spends at all.
Control what you pay for with match types and negatives
Broad match reaches further and spends faster; phrase and exact match keep spend closer to the searches you’ve chosen. Google’s keyword matching options page explains that broad match also takes account of things like the content of your landing pages and the other keywords in the ad group, and Google’s broad match guidance pairs it with Smart Bidding.
Most business accounts do best starting with phrase and exact, expanding to broad only in campaigns with strong conversion data. Whatever the mix, the search terms report is where waste becomes visible, and a maintained negative keyword list is what keeps it out.
Put the budget where the returns are
Budgets tend to be set once and forgotten. Review them monthly against cost per conversion: campaigns that convert cheaply and are limited by budget should get more; campaigns that spend their budget without converting should get less, or be paused while the cause is found.
Ad schedules and device adjustments belong in the same review. A campaign that converts on weekday mornings and wastes money at weekends is common, and easy to fix.
The landing page decides the conversion rate
Halving the cost per click is hard; doubling the conversion rate is often easier. The page should answer the search that brought the visitor, load quickly on a phone, make the next step obvious, and keep every claim consistent with the ad. Google’s own advice on improving Quality Score says the same: keep messaging consistent from ad to landing page, make the site mobile friendly and improve loading speed. Its landing page experience rating reflects how relevant and useful the page is to people who click your ad.
The commercially right page and the compliant page are the same page.
Google’s Misrepresentation policy doesn’t allow promising products, services or promotional offers in the ad that are unavailable or aren’t easily found from the destination, and its Unacceptable Business Practices policy covers offering products or services that you don’t have or can’t deliver. The second is enforced without warning. See Google Ads suspension policies explained.
Report on profit, not on clicks
Click-through rate and impressions describe activity, not results. The numbers to watch are cost per lead, the rate at which leads become customers, and the value of a customer, because together they say whether a campaign is making money. A campaign with a poor click-through rate and a low cost per sale is a good campaign. Reporting that stops at clicks hides that.
The same goes for Quality Score: Google calls it a diagnostic tool, not an input to the auction, so treat it as a clue to where ads or pages can improve rather than a target.
Automation is a tool, not a strategy
Google’s automated features, from Smart Bidding to broad match to automatically created assets, work well when fed good data and a clear conversion goal, and are expensive when they aren’t. Adopt them one at a time, measure the change, and keep control of the parts of the account that decide what the business is being charged for.
Fix measurement.
Primary conversions that match what the business actually received.
Choose a bid strategy your data can support.
Clicks with a limit, or manual, until conversions build up.
Tighten match types and negatives.
Read the search terms report every week.
Move budget monthly.
Towards the campaigns with the lowest cost per conversion that are limited by budget.
Improve the landing page.
Relevance, speed on a phone, an obvious next step, and claims that match the ad.
Add automation one piece at a time.
Measure each change before the next.
Frequently asked questions
What is a good PPC ROI?
One where the profit from the customers a campaign brings in is more than the campaign costs, including your other costs of serving them. That’s why the numbers to watch are cost per lead, how many leads become customers, and what a customer is worth, not clicks.
Should a new account use Smart Bidding?
Conversion-based strategies need conversions to learn from. A new or low-volume account usually does better on Maximise clicks with a sensible bid limit, or on manual bidding, until conversions build up.
Is broad match a good idea for a small budget?
Broad match reaches further and spends faster. Most business accounts do best starting with phrase and exact, and adding broad only where there’s strong conversion data, with a maintained negative keyword list.
How often should I review my Google Ads budget?
Monthly, against cost per conversion: more for campaigns that convert cheaply and are limited by budget, less for campaigns that spend without converting.
Does Quality Score affect what I pay?
Google says Quality Score is a diagnostic tool, not an input in the auction. The auction uses real-time versions of the same things it measures: expected click-through rate, ad relevance and landing page experience.
