Bing Ads vs Google Ads ROI: Cost, Conversion, and When Bing Wins
You are spending six figures a year on Google Ads and have never tested Bing because "nobody uses Bing." That assumption is costing you money. The bing ads vs google ads roi comparison is not close in several important verticals -- and Bing wins more often than most marketers expect.
This post puts real cost and conversion data side by side, breaks down the scenarios where Bing delivers superior returns, and dismantles the myths that keep marketing teams from diversifying.
Bing Ads vs Google Ads: The Data Table
The following data reflects aggregate benchmarks across B2B SaaS, professional services, e-commerce, and lead generation verticals. Individual campaign performance varies, but these averages represent what a competently managed campaign on each platform delivers.
| Metric | Microsoft Advertising (Bing) | Google Ads | Difference |
|---|---|---|---|
| Average CPC (Search) | $1.54 | $2.69 | -43% (Bing cheaper) |
| Average CPC (B2B SaaS) | $3.80 | $6.40 | -41% (Bing cheaper) |
| Average CTR (Search) | 2.83% | 3.17% | -11% (Google higher) |
| Average Conversion Rate | 3.04% | 3.75% | -19% (Google higher) |
| Average Cost Per Conversion | $50.71 | $71.73 | -29% (Bing cheaper) |
| Cost Per Conversion (B2B) | $86.20 | $132.50 | -35% (Bing cheaper) |
| Desktop Traffic Share | 68% | 42% | +62% (Bing more desktop) |
| Average Household Income of Users | $75,000+ (44% of users) | $75,000+ (31% of users) | Bing skews wealthier |
| Search Market Share (US Desktop) | ~11% | ~83% | Google dominates volume |
The pattern is consistent: Google delivers more volume and slightly higher conversion rates, but Bing delivers lower costs across every efficiency metric. The net ROI calculation depends on whether your constraint is volume or cost.
For the broader strategic context on how these platforms compare beyond cost metrics, see Microsoft Advertising and Copilot Strategy in 2026: What Marketers Need to Know.
Case Study: When Bing Wins on ROI
A B2B cybersecurity SaaS company ($45M ARR) ran identical campaigns on Google Ads and Microsoft Advertising for 12 months. Same keywords, same ad copy, same landing pages, same conversion actions. The only differences were platform-specific bid adjustments (Bing bids set at 65% of Google bids) and the addition of LinkedIn Profile Targeting on Microsoft.
12-month results:
| Metric | Google Ads | Microsoft Ads |
|---|---|---|
| Total spend | $624,000 | $156,000 |
| Total conversions (demo requests) | 1,240 | 486 |
| Cost per demo | $503 | $321 |
| Demo-to-SQL rate | 24% | 34% |
| Cost per SQL | $2,096 | $944 |
| SQL-to-closed deal rate | 18% | 22% |
| Average contract value | $52,000 | $61,000 |
| Revenue generated | $2.9M | $1.9M |
| ROAS | 4.6x | 12.2x |
Google generated more total revenue, but Microsoft delivered 2.6x higher ROAS. The cost per SQL was less than half, and the average deal size was 17% larger. The higher demo-to-SQL and SQL-to-deal conversion rates on Microsoft trace directly to the audience composition: LinkedIn-targeted enterprise decision-makers on corporate desktops convert at higher rates and buy larger contracts than the broader Google search audience.
The company's conclusion: Google is the volume engine, Microsoft is the efficiency engine. Both deserve budget, but Microsoft's ROAS justified increasing its share from 20% to 30% of total paid search spend.
For more on how B2B SaaS companies specifically benefit from this dynamic, see Microsoft Ads for B2B SaaS: Why Bing Deserves a Slice of Your Budget.
Myth-Busting: Five Things Marketers Get Wrong About Bing Ads
Conventional wisdom in this area is often wrong. These persistent myths lead to poor decisions and wasted resources.
Myth 1: "Nobody Uses Bing"
Bing processes over 15 billion searches per month globally. In the US, Bing holds approximately 11% of desktop search market share and reaches 63 million users that Google does not reach. "Nobody uses Bing" is not supported by data -- it is a reflexive dismissal based on personal browsing habits rather than market analysis.
Add Copilot into the equation, and Microsoft's search surface reach grows further. Over 420 million monthly active Copilot users generate queries that flow through Microsoft's ecosystem. See Microsoft Copilot Adoption Rate and Statistics in 2026: Usage Data and Trends for the full numbers.
Myth 2: "Bing Users Don'T Convert"
The opposite is true for B2B. Bing users convert at slightly lower rates on initial click, but downstream rates (lead-to-opportunity, opportunity-to-close) are often higher because the user base skews older, more affluent, and desktop-heavy -- the demographic with purchase authority.
Myth 3: "Managing Two Platforms Is Not Worth the Effort"
Microsoft's Google Import tool makes campaign replication a 15-minute task. Incremental management adds 2-3 hours per week. If that produces 30-40% lower cost per conversion, the effort-to-value ratio is overwhelmingly positive.
Myth 4: "Bing'S Automation Is Too Primitive"
Microsoft's automated bidding and audience tools have improved substantially. Enhanced CPC, Maximize Conversions, and Target CPA all function comparably to Google's equivalents. The main limitation is that Microsoft's lower volume means automation needs more time to learn, not that the technology is inferior. For specifics on which bidding strategies work best on Microsoft, see Bing Ads Bidding Strategy Guide: Manual, Automated, and Smart Bidding Compared.
Myth 5: "I Should Wait Until Bing Gets More Market Share"
Waiting for higher market share means waiting for higher competition. The cost advantage of Microsoft Advertising exists precisely because most advertisers are not there yet. As Copilot adoption drives more search volume to Microsoft surfaces, ad spend will follow, and CPCs will rise. The window for capturing enterprise audiences at below-market rates is open now and will narrow.
How to Read the ROI Comparison
The comparison describes the market, not your mandate. Weight it by where your buyers search, because Bing's older, often higher-intent audience can beat Google on ROI for some segments even when Google wins on volume. Use the table as a hypothesis and test it against your own data before shifting budget.
Segment by objective. A brand-awareness dollar behaves differently from a bottom-funnel dollar, so read the ROI per goal, not as one blended number. The honest plan adjusts the ranking to fit how you actually sell, and the table is the starting point, not the verdict.
When Bing Wins on ROI
Bing often wins where the audience is older, higher-income, or in specific verticals, because the auction is less contested and the click cheaper. If your buyer fits that profile, a Bing campaign can return more per dollar than a crowded Google auction, so the niche is the signal, not the platform size.
The win is also about match. A business whose customers research on Microsoft surfaces - Outlook, Bing, LinkedIn's ad network - sees Bing ROI compound across the funnel, so read the ecosystem, not the search box alone. The connected intent is what makes the lower volume pay.
Myth-Busting the ROI Assumptions
The myth that Bing is dead ignores its steady share through Windows and Microsoft properties, so dismissing it can cede cheap, high-intent clicks to competitors. The realistic view is a smaller but often efficient audience worth a tested slice of budget.
The myth that Google always wins on ROI ignores auction pressure. On crowded keywords Google cost per click can exceed the value, while Bing delivers the same intent cheaper, so the assumption should be tested, not assumed. The data, not the reputation, decides the split.
Frequently Asked Questions
What Is the Minimum Budget to Test Microsoft Advertising Effectively?
Allocate $500-1,500 per month for a meaningful test. This is enough to generate statistically significant data on your top 10-20 keywords over 30 days. If your average CPC on Bing is $2-4, this budget produces 125-750 clicks -- sufficient to measure conversion rates and cost per acquisition. Scale up once you confirm ROI.
Can I Run Bing Ads Without Also Running Google Ads?
Technically yes, but rarely optimal. Bing is most effective as a complementary channel that captures enterprise-heavy audiences at lower cost. Run both and compare ROI at the campaign level.
How Do I Attribute Revenue Correctly Across Both Platforms?
Use your CRM as the source of truth. Import offline conversions into both platforms and compare cost per opportunity and ROAS using CRM data, not last-click platform attribution.
Does Bing Perform Better in Specific Industries?
Bing outperforms Google on ROI in B2B SaaS, financial services, legal, insurance, healthcare, and professional services -- industries with older, desktop-heavy buyers making high-value decisions. The advantage narrows in consumer e-commerce and mobile-first verticals.
Key Takeaways
- Bing Ads deliver 29-35% lower cost per conversion than Google Ads across most B2B verticals, with the gap widening when measuring downstream metrics like cost per SQL and ROAS.
- Google wins on volume; Bing wins on efficiency. The optimal strategy is running both platforms and allocating budget based on cost per opportunity, not impressions or clicks.
- Bing's user base skews older, more affluent, and more desktop-heavy -- demographics that convert at higher rates and generate larger deal sizes for B2B companies.
- The "nobody uses Bing" myth ignores 15 billion monthly searches and 420 million Copilot users whose queries flow through Microsoft surfaces.
- Microsoft's cost advantage exists because most advertisers have not arrived yet -- early movers capture enterprise audiences at below-market rates.