If you’re running Google Ads and wondering whether your return on ad spend is any good, you’re asking exactly the right question – and unfortunately, there’s no single answer that works for everyone. What counts as a good ROAS for Google Ads depends on your industry, your margins, your funnel, and what you’re actually trying to achieve.
This guide breaks down what ROAS means, what the benchmarks look like by industry, and – more usefully – what you can actually do to push yours higher.
What Is ROAS and How Do You Calculate It?
ROAS stands for Return on Ad Spend. The formula is simple:
ROAS = Revenue Generated from Ads ÷ Ad Spend
So if you spent £1,000 on Google Ads and generated £4,000 in revenue, your ROAS is 4:1 (or 400%). The number tells you how many pounds you get back for every pound you put in.
What ROAS does not tell you is whether you’re profitable. A 4:1 ROAS sounds healthy – but if your product margins are 20%, you’re losing money. This is why many experienced advertisers prefer to think in terms of break-even ROAS, calculated as:
Break-even ROAS = 1 ÷ Gross Margin
If your margin is 40%, you need at least a 2.5:1 ROAS just to cover your costs. Anything above that is profit from ads.
What Is a Good ROAS for Google Ads by Industry?
Industry benchmarks for good ROAS for Google Ads vary significantly. Based on aggregated 2026 data across Google Ads accounts:
- E-commerce (general): 4:1 to 5:1 is considered strong
- Fashion and apparel: 3:1 to 5:1 – higher competition, but strong conversion rates
- Software and SaaS: Often 3:1 to 4:1 due to higher average order values
- Home and garden: 5:1 or higher is realistic given lower ad saturation
- Travel: Often lower, around 3:1, due to longer decision cycles
- Financial services: ROAS can be misleading – focus on cost per lead instead
The important caveat: these are averages. An e-commerce brand with 60% margins and efficient campaigns can profitably operate at 2.5:1, while one with 15% margins needs 7:1 or higher to justify the spend.
Why Your ROAS Might Be Lower Than Expected
If your ROAS for Google Ads is underperforming, there are a handful of common culprits to investigate before touching your bids:
Poor Keyword-to-Landing Page Match
If someone searches “red running shoes” and lands on your homepage, they’re likely to leave without converting. Every ad group should send traffic to a page that directly addresses the search intent – ideally a product category page or a tailored landing page.
Broad Match Without Proper Exclusions
Broad match keywords capture a lot of irrelevant traffic. Without a robust negative keyword list, you’ll burn spend on searches that have no real purchase intent. Regular search term report reviews – at least weekly – are non-negotiable.
Bidding Strategy Mismatch
Using Maximize Clicks when you need conversions, or setting a Target ROAS before you have enough conversion data, are both common mistakes. If you have fewer than 30–50 conversions per month, manual CPC or Maximize Conversions (without a target) often works better than Target ROAS.
Attribution Problems
If your conversion tracking is broken, or if you’re attributing revenue to last click only, your ROAS data will be misleading in either direction. Verify your tracking setup first – everything else depends on it.
Related reading: Google Ads Bidding Strategies Explained: Which One Should You Use?
How to Improve Your ROAS on Google Ads
Rather than just chasing higher bids, improving ROAS comes down to three levers: getting better traffic, converting it more effectively, and paying less for it.
1. Tighten Your Campaign Structure
Group keywords into tightly themed ad groups – ideally 5–10 keywords per group – and write ad copy that directly mirrors the search intent. Tighter relevance improves your Quality Score, which lowers your CPC and improves your ad position without raising your bid.
2. Improve Landing Page Experience
Google’s own data shows that landing pages with fast load times (under 3 seconds), clear value propositions, and prominent calls to action consistently outperform generic pages. Improving your landing page doesn’t just lift conversions – it also improves your Quality Score, further reducing what you pay per click.
3. Use Audience Layering
Layer in audiences as bid adjustments: increase bids for past visitors, cart abandoners, or customer match lists. These segments already know your brand and convert at higher rates, which naturally lifts your overall ROAS.
4. Segment Campaigns by Margin
If you sell products at different margin levels, don’t mix them in the same campaign with the same ROAS target. Create separate campaigns for high-margin and low-margin products so you can set appropriate ROAS targets for each.
5. Review Your Attribution Window
Switch from last-click to data-driven attribution in Google Ads. Data-driven attribution gives credit to every touchpoint that contributed to a conversion, giving you a more accurate picture of what’s actually working.
Setting a Realistic ROAS Target
Rather than benchmarking against industry averages, build your ROAS target from your own numbers. Take your gross margin, subtract a reasonable profit target, and calculate what ROAS you need to hit to make ads worth running.
For example: if your margin is 45% and you want to keep ad spend below 15% of revenue, your target ROAS is 1 ÷ 0.15 = 6.7:1. That’s your floor, not your ceiling.
Once you know your target, structure your campaigns around hitting it – and resist the temptation to chase a higher ROAS at the expense of volume. Scaling a profitable campaign at 5:1 usually generates more total profit than a highly efficient 10:1 campaign running on a tiny budget.
Bottom Line
A good ROAS for Google Ads is one that keeps you profitable and growing – and that number is different for every business. Start with your margins, calculate your break-even ROAS, and use that as your benchmark rather than industry averages. Then focus on the fundamentals: tighter keyword groups, better landing pages, accurate tracking, and the right bidding strategy for your data volume. Those changes move the needle more reliably than adjusting bids alone.
Need help building a Google Ads strategy that actually hits your ROAS targets? Marquee works with growth-focused brands to build and manage performance campaigns that prioritise real returns over vanity metrics.
Related reading: If you want to improve efficiency beyond bidding, see our guide on Google Ads Quality Score – a higher Quality Score directly reduces what you pay per click.
Want expert help with your account? See our Google Ads management service.