Calculate how much budget you need to increase your Google Ads impression share — and how many conversions you're missing by not capturing available impressions.
Enter your current performance data to estimate the budget needed to reach your target impression share.
Tandem Martech analyzes your account to identify whether impression share loss is from budget, Quality Score, or bid strategy — with specific recommendations to recover lost traffic.
Impression Share (IS) is the percentage of total available impressions your ads received. If your ads were eligible to show 1,000 times in a given period but only showed 420 times, your impression share is 42%.
Impression share tells you how much of the available market you're capturing. A 42% impression share means competitors are showing ads in 58% of auctions where you could have appeared — and potentially capturing customers you're missing.
Google Ads splits impression share loss into two causes — understanding which applies to you determines the fix:
Your daily budget runs out before all eligible impressions are served. Fix: increase budget. This is straightforward — you simply need to spend more to capture the available traffic.
Your Ad Rank (bid × Quality Score) is too low to win auctions consistently. Fix: improve Quality Score or increase bids. Increasing budget alone won't help if rank is the issue — you need to improve the quality of your ads and landing pages, or bid more aggressively.
Check both metrics in your Google Ads Campaigns report by adding the "Search Lost IS (budget)" and "Search Lost IS (rank)" columns. The sum of these two values plus your current IS should equal approximately 100%.
Target impression share depends on your campaign type and objective:
Brand campaigns should be at near 100% impression share — if competitors are showing ads on your brand name, you're letting them intercept your existing customers. Core service campaigns should target 60-80% before expanding budget to broader terms.
If your Lost IS (budget) is high, simply increasing your daily budget is the most direct fix. The calculator above estimates how much additional budget is needed based on a linear relationship between budget and impression share.
Quality Score improvements increase your Ad Rank without raising bids. Focus on: writing more relevant ad copy that matches your target keywords, improving landing page relevance and load speed, and ensuring your keyword groups are tightly themed so each ad is highly relevant to the searches triggering it.
Sometimes the most efficient path to higher impression share is tightening your targeting — fewer keywords with more budget allocated to each. A 90% impression share on your 20 best keywords is more valuable than 30% share across 200 keywords.
Broad match keywords generate large numbers of impressions including many irrelevant ones, diluting your impression share with low-quality traffic. Switching to phrase or exact match on core keywords often improves impression share on the terms that matter while reducing wasted spend on irrelevant searches.
Google also reports "Search Top Impression Share" — the percentage of impressions shown at the top of the page (above organic results). This matters more than overall impression share for conversion intent, as ads in the top positions generate significantly higher CTR.
Benchmark: aim for Search Top IS above 70% on your core converting keywords. If you have high overall IS but low Top IS, your bids may be winning impressions but not top positions — consider increasing bids on your highest-value keywords specifically.