Your Ads Are Running. They’re Just Not Showing.
That’s the frustrating reality of low Impression Share — and most advertisers have no idea it’s happening to them.
Here’s the thing: Impression Share (IS) is one of the most telling metrics in your entire Google Ads account. It tells you the percentage of eligible auctions your ad actually appeared in. If that number is low, your ads are qualified to show but aren’t — and every missed auction is a potential customer going straight to your competitor.
The formula is simple: Impression Share = Impressions Received ÷ Total Eligible Impressions. If you received 400 impressions out of 1,000 you were eligible for, your IS is 40%. Meaning 60% of the time, you were a no-show.
So why does this happen? There are two completely separate causes — and treating the wrong one is one of the most expensive mistakes I see in accounts.
Step 1: Diagnose Before You Touch Anything
Before you raise bids, increase your budget, or change a single setting, you need to know what’s actually causing the problem. Go to your Columns in Google Ads, click Competitive Metrics, and add these two columns: Search Lost IS (Budget) and Search Lost IS (Rank).
These two numbers are your diagnostic split. One tells you the problem is financial. The other tells you the problem is qualitative. They require completely different fixes — and if you mix them up, you’ll waste money.
Step 2: If Lost IS (Budget) Is High
This means your daily budget runs out before the day ends. Your ads go dark mid-afternoon — right when a lot of searches are happening — because the money’s gone.
The knee-jerk reaction is to just add more budget. And sometimes that’s the right move. But before you do, look at where that budget is being spent. I can’t tell you how many accounts I’ve audited where the budget was being eaten up by irrelevant search terms that never stood a chance of converting.
Start by going into your Search Terms report and aggressively adding negative keywords. Cut the waste first. Then tighten your geo-targeting — if you’re running nationally but your best customers are in three cities, why are you paying for the rest of the country? Concentrate your spend where it actually converts, then evaluate whether you need to increase budget at all.
Step 3: If Lost IS (Rank) Is High
Here’s the one that trips people up. A high Lost IS (Rank) means your Ad Rank is too weak to enter — or win — auctions competitively. And the critical mistake here? Throwing more budget at it. That won’t help. If your Ad Rank is the issue, more money just means paying more per click without gaining more impressions.
The fix is Quality Score. Specifically, three things: tighter keyword-to-ad-group alignment (stop lumping unrelated keywords into the same ad group), stronger keyword mirroring in your headlines, and a faster, more relevant landing page. Improving your Quality Score from a 5 to a 7 can reduce your cost-per-click by 30–40%. That’s basically a free budget increase — without spending an extra cent.
Also, check your ad assets. Sitelinks, callouts, structured snippets — these are factored directly into Ad Rank. Missing them is like showing up to a competition without your best gear.
The 80% Rule
One more thing — and this one saves advertisers a ton of wasted money. Don’t chase 100% Impression Share. I see this all the time: someone obsesses over maxing out their IS on every keyword, and costs go through the roof with almost nothing to show for it.
The sweet spot is around 80% on your core, high-intent, revenue-driving keywords. Below 50% on your best terms and you’ve got a real problem. But trying to squeeze out that last 20%? You’ll pay exponentially more for diminishing returns. Accept lower targets — around 20–40% — on informational, top-of-funnel terms. Save your budget for the keywords that actually close.
Check your IS metrics today. If you’re sitting below 50% on your key terms, you’ve got a real opportunity to reclaim lost visibility — without necessarily spending more.
