Google Ads
Quality Score is the invisible tax on a badly built Google Ads account.
Most poorly built clinic accounts pay a premium on every single click and never see the line item. Here is where it hides.
By Pete Flynn · 10 June 2026 · 6 min read
There is a line on your Google Ads bill you will never see, but you pay it every single click. Google calls it Quality Score, a rating out of 10 for how relevant your keyword, your ad, and your landing page are to each other. A high score tends to buy you cheaper clicks and better positions. A low one works against you in every auction, and a poorly built account can end up paying noticeably more for the same spot a better built account holds cheaply. After years of auditing clinic accounts across the Clinic Mastery community, I keep coming back to this as the single most common reason a campaign is quietly bleeding money while looking like it is working.
Why the gap widens every month
Quality score is interest that compounds.
The feedback loop
01
Higher quality score
Tight ad group, the search term in the headline, a page that matches the search.
02
Cheaper clicks
Same ad position, lower cost per click. A 10/10 can pay a third of what a 3/10 pays.
03
More clicks and data per dollar
The same budget buys more visits, so more booking data flows back to the account.
04
Better signal back to Google
More conversions teach Google who books, so it finds more people like them.
Step four loops back to step one. Cheaper clicks fund more data, more data lifts the score, the higher score makes the next click cheaper again. That is the compounding.
Same ad position. Same patient.
A 10 out of 10 and a 3 out of 10 do not pay the same.
What it costs
10 / 10
3 / 10
1 click, same position
$3
$12
Cost per booking
$80
$320
That is a three to four times gap on a single click, and it does not stay still. The cheaper account keeps feeding itself. After six to twelve months a competitor cannot simply outbid it. They would pay multiples more for every click while they try to catch up.
What Quality Score actually is.
Quality Score is Google scoring the relevance of three things lined up together: the keyword you are bidding on, the ad that shows when someone searches it, and the page they land on after they click. When all three match the search intent tightly, Google reads that as a good experience for the searcher, and you tend to get rewarded with lower costs and stronger positions.
It is scored from 1 to 10 at the keyword level. You can see it in your account by adding the Quality Score column to your keyword view. Most clinic owners have never looked. When I add that column during an audit, the picture is almost always the same: a sea of 3s and 4s, occasionally a 2, rarely anything above 6.
The reason this matters is mechanical, not theoretical. Quality Score feeds into Ad Rank, which decides where you show and roughly what you pay. A low score generally means you have to bid more to hold the same position someone else holds for less. That gap is the tax.
Quality Score is a line on your bill that Google never prints. You pay it on every click.
Why most clinic accounts sit at 1 to 4.
I audited a physio account recently where 17 of the 20 active keywords sat at Quality Score 1 to 4. Almost every one of those keywords was carrying a premium on every click. The owner thought the budget was the problem. The budget was fine. The relevance was broken, and the broken relevance was eating the budget before it could do any work.
When a score is that low across the board, it is rarely bad luck. It is structure. The ad groups are too broad, so one generic ad is trying to answer ten different searches. The ad copy is written in clinic language instead of patient language. The landing page is the clinic homepage, which talks about everything and answers nothing. Google looks at that and decides the searcher probably will not get a good experience, so it costs you more to show up anyway.
Low scores make the whole account inefficient in a way that compounds. You are paying more per click, which means fewer clicks for the same spend, which means a higher cost per booking on top of every other leak in the funnel. The tax stacks on the leak.
The three inputs, and what moves each one.
Google builds Quality Score from three components, and each one has a specific fix. Understanding them is what turns this from a mystery number into a checklist.
Expected click through rate is Google's prediction of how often people will click your ad. It rises when your ad genuinely answers the search. Ad relevance is how closely your ad copy matches the keyword's intent. Landing page experience is how relevant, fast, and useful the page is to that same search. Get all three pointing at the same patient need and the score tends to climb.
The three things Google scores, and the lever for each
Input one
Expected click through rate
Tighten ad groups so one keyword theme gets one tightly matched ad. A neck pain ad group with a neck pain headline earns the click. A generic physio ad asked to cover everything earns nothing.
Input two
Ad relevance
Write in patient language, not clinic language. Tough neck that will not loosen up beats active listening and manual therapy. The patient typed their symptom, not your treatment name. Mirror their words.
Input three
Landing page experience
Send the click to a page about that exact problem, not the homepage. Fast, built for mobile, one clear booking action. A relevant page that loads quickly lifts the score and the booking rate together.
Clinic language is quietly costing you the click.
This one comes up in nearly every coaching session, so it is worth its own section. A clinic writes an ad that says active listening, evidence based assessment, tailored treatment plans. It is accurate. It is also invisible to the person searching, because the person searching typed tough neck or sore knee getting worse.
Google sees the mismatch between the search and the ad and marks down your relevance. The searcher scrolls past because nothing on the ad matched the words in their head. Same budget, fewer clicks, higher cost. When we rewrite the ad in the patient's own language and point it at a page about that exact symptom, the click through rate tends to climb and the Quality Score follows.
This is the same discipline behind writing to one problem in the words patients use. Speak to the problem the way they would say it out loud. The score is just Google measuring whether you did.
Work out what the tax is costing you.
The frustrating part of Quality Score is that it stays invisible until you go looking. Google will not tell you that you paid more this month because your scores are low. It just quietly clears the auction at a higher price and moves on.
The calculator below makes it visible. Put in your current average Quality Score and your spend, and it estimates the premium you are likely paying versus a well structured account. For most clinics seeing it for the first time, the number is uncomfortable. It is also one of the most fixable lines in the whole campaign, usually inside a few weeks of restructuring.
Lifting a keyword from a 4 to a 7 does not just improve a metric. It cuts what you pay for the same position.
Quality Score tax estimator
What your score is costing you per click.
Two advertisers can win the same position and pay very different prices for it. Put in what you pay now and roughly where your Quality Score sits, and watch the gap between your price and the floor price a 10 out of 10 pays.
From Google Ads, your average CPC on the search campaign.
Roughly how many ad clicks you buy in a month.
What you pay now
Your cost per click
$6.00
At a Quality Score of 5 out of 10
Your price multiplier
1.5×
Versus the floor price a 10 out of 10 pays
What a 10 out of 10 pays
The floor price per click
$3.96
Same ad position, cleaner account
You overpay per click
$2.04
$6.00 you pay, less $3.96 the floor
The Quality Score tax, per year
$7,349
At 5 out of 10 you pay roughly 1.5 times the floor for the same click, about $612 a month. Lift the score and that tax falls, the saving compounds into more clicks and more data, and the gap to your competitors widens in your favour.
An illustrative estimate, not a Google formula. The real penalty depends on the auction, but the direction is always the same: a higher Quality Score lowers what you pay for the same position, and the advantage compounds over time.
At a Quality Score of 5, you're paying roughly $7,349 a year more than the floor for the same clicks.
An audit shows where your score is leaking, the ad relevance, the landing page, the account structure, and what lifting it is worth in real money.
Lifting the score is the cheapest win in the account.
Almost every other improvement in a Google Ads account costs you something: more budget, more time, more ad spend tested. Lifting Quality Score is the rare one that costs nothing extra and gives you more from the spend you already have. You are not buying more clicks. You are paying less for the clicks you were already going to buy.
The work is structural and it is the same three moves every time. Break broad ad groups into tight symptom themes so each one earns its own relevant ad. Rewrite the copy in patient language. Point each group at a page built for that search, not the homepage, and make sure that page is genuinely ready for paid traffic. Do those three things and the score tends to climb, the cost per click falls, and the booking rate rises at the same time.
If your account has been running for months and you have never looked at the Quality Score column, that is where I would start. It is usually where the quiet money is.
Want someone to find the tax in your account?
We audit clinic Google Ads accounts and show exactly where Quality Score is costing you.
The audit pulls your real Quality Scores keyword by keyword, shows what each low score is likely costing in premium clicks, and maps the structural fixes that lift them.
Get a free Google Ads auditCommon questions
