ROAS Explained: 10 Practical Ways to Improve Return on Ad Spend in 2026
If you're running paid ads for your business, ROAS (return on ad spend) is probably the number you check first thing every morning. It's also the number most SME owners misread. A “good” ROAS isn't a fixed target. It depends entirely on your margins, your category and how your customers behave after that first purchase. Treat it as a universal 3:1 rule and you'll either scale a campaign that's quietly losing you money, or kill one that's actually working.
We manage Meta, TikTok, Google and LinkedIn campaigns for brands across Exeter, Plymouth, Bristol, Bath and the wider South West, and the same pattern comes up again and again: businesses chasing the platform's own ROAS number instead of the levers that actually move it. Here are the ones worth your time.
What's a good ROAS for your business?
There's no universal good ROAS. It depends on your gross margin, not an industry average. Work it out with one formula:
Break-even ROAS = 1 ÷ gross margin %
If your gross margin is 50%, you break even at 2.0x. If it's 25%, you need 4.0x just to cover costs. A 3.0x ROAS can be excellent for one business and disastrous for another, entirely depending on what's left after the ad spend, cost of goods, fulfilment and overheads are accounted for.
Once you know your break-even number, aim 30 to 100% above it depending on how much margin you need for growth, wages and reinvestment. That's the number to put in front of your team, not an industry average pulled from a blog post.
Why does creative still drive most of your ROAS?
Creative is the biggest ROAS lever most businesses still control directly, because platforms now handle targeting and bidding through their own AI systems. A handful of tired ad creatives run for months will always underperform a steady stream of fresh, honest, well-made content.
What tends to move the needle:
Refresh creative every couple of weeks. Ads left running for months start to fatigue, and performance slides with them.
Lean on native, unpolished formats. UGC-style video and behind-the-scenes content routinely outperforms glossy, studio-shot ads for direct response, because it reads as content rather than an advert.
Test constantly rather than chasing one big idea. Small, consistent creative tests beat a single big swing almost every time.
This is where a proper video production setup earns its keep. A library of short, testable clips (product demos, founder-led explainers, customer stories) gives your Meta and TikTok campaigns something new to say every fortnight instead of the same three ads limping along until they stop converting.
Why is AOV the ROAS lever most businesses ignore?
Increasing average order value lifts ROAS without spending an extra pound on ads, because every extra pound of order value flows straight into the top of the ROAS equation (Revenue ÷ Ad Spend). Most businesses only ever attack the spend side. Fewer work the revenue side, even though it's often the quicker win.
Practical ways to lift AOV:
A free-shipping threshold set just above your current average order
Simple product bundles priced to nudge people over that threshold
Cross-sells at cart and checkout, not just on the product page
“Buy 2, save 10%” style volume pricing
Post-purchase upsells while the customer is still in a buying mindset
If your AOV is currently £60 and your ROAS is 2.5x, lifting AOV to £75 through bundling and thresholds alone takes you to roughly 3.1x at identical ad spend. It's usually the fastest ROAS improvement available and it's rarely the first thing anyone tries.
How does lifetime value change your ROAS target?
Judging campaigns on lifetime value rather than first-purchase ROAS often reveals your most profitable products are the ones you're underfunding. This is the lever most business owners understand in theory but rarely apply. If you only judge a campaign on first-purchase ROAS, you'll often deprioritise the products customers come back for.
Say a customer's average lifetime value is £300 over 12 months. A 2.0x first-purchase ROAS on a £60 order might look mediocre on paper, but if that customer goes on to spend another £240 at a healthy margin, the real return on that ad spend is far stronger than the dashboard suggests.
In practice, this means:
Giving more acquisition budget to products with strong repeat-purchase rates, even if their first-purchase ROAS looks average
Setting different ROAS targets depending on the product, since consumables and repeat-purchase items can sustain a lower first-purchase number than one-off purchases
Tracking 30/60/90-day repeat revenue by source, not just day-one conversions
How much does conversion rate actually affect ROAS?
A conversion rate improvement lifts ROAS by the same proportion, not by one percentage point. Take conversion rate from 2.0% to 2.5% and, at the same traffic and spend, ROAS improves by roughly 25%. This is often the highest-leverage fix available, and it costs nothing in extra ad spend.
Where to look first:
Check your product pages have clear pricing, real photos and answers to the obvious objections.
Simplify checkout: guest checkout, visible shipping costs and minimal form fields.
Fix the mobile experience. Most ecommerce traffic is now mobile, and a clunky mobile checkout quietly caps your ROAS ceiling.
Make trust signals obvious, including a clear returns policy, genuine reviews and transparent delivery times.
Keep site speed in check. Slow pages hurt both rankings and sales.
Most of the businesses we run an ecommerce consultation for have a meaningful conversion lift sitting on the table before they've spent an extra pound on ads.
Why does product data quality affect ROAS?
Clean, complete product data affects ROAS because it now feeds a growing range of shopping surfaces beyond standard Shopping ads, and poor data quietly locks you out of the placements that convert best.
Worth checking regularly:
Descriptive, specific product titles rather than internal shorthand
Clean, high-resolution images without sale stickers or text overlays
Complete attributes (size, colour, material, brand)
Accurate, real-time stock and pricing
Product descriptions that front-load the key details in the first line or two
For a lot of the ecommerce stores we audit, the problem isn't the campaign. It's the feed the campaign is built on.
Why shouldn't you trust platform-reported ROAS alone?
Platform-reported ROAS is often inaccurate because attribution changes, iOS privacy restrictions and cross-device shopping behaviour all distort dashboard numbers, sometimes inflating them, sometimes deflating them, and rarely in a way you can predict.
A more reliable number to track alongside platform ROAS is Marketing Efficiency Ratio (MER):
MER = Total Revenue ÷ Total Ad Spend
It's a simple, platform-agnostic number that can't be skewed by one channel's attribution window. Most businesses should be aiming for a MER somewhere between 3.0x and 5.0x depending on margin. Use platform ROAS to guide day-to-day optimisation, but check your real bank-account numbers before making any big scaling decisions.
Should you use broad or narrow ad targeting in 2026?
Broad targeting fed into the platforms' own AI systems now outperforms narrow, hand-picked audiences for prospecting on Meta, Google and TikTok. Targeting logic has flipped over the last couple of years. Narrow audiences used to be the safer bet, but Meta's Advantage+, Google's Performance Max and TikTok's algorithm are consistently winning against manually restricted targeting.
Where manual targeting still earns its place:
Retargeting warm audiences and past purchasers
Lookalikes built from your best (highest-LTV) customers
Geo or demographic-restricted products
Protecting branded search terms on
The pattern for 2026 is broad and AI-driven for prospecting, manual and tightly controlled for retargeting and brand protection. Fighting the algorithm with overly narrow interest targeting tends to do more harm than good.
How do you scale ad spend without ROAS collapsing?
Scaling ad spend without crashing ROAS comes down to gradual budget increases, matching creative volume to spend, and spreading budget across more than one platform. ROAS naturally softens as you spend more, and that's normal. What isn't normal is a sudden collapse.
A few habits that keep scaling predictable:
Increase budgets in steps of no more than 20% every few days, rather than doubling spend overnight
Match creative volume to spend, since campaigns running at higher budgets need more fresh creative feeding them, not less
Spread spend across more than one platform (Meta, Google, TikTok, LinkedIn) so no single algorithm change can sink your whole account
Test with a small “no ads” holdout group occasionally to sense-check how much of your revenue is genuinely incremental
If ROAS suddenly craters during a scale-up, it's almost always a creative, targeting or tracking issue, not proof that the market has dried up.
When should a South West SME bring in a paid media partner?
Bring in a specialist once ROAS needs to be managed across creative, targeting, attribution, AOV and conversion rate simultaneously. That's usually the point it stops being something you can run alongside everything else in the business.
It's usually worth bringing in a specialist when:
Monthly ad spend is meaningful and ROAS has plateaued despite regular tweaking
You want paid media working alongside video content, email and your website rather than in isolation
Platform-reported ROAS doesn't match what you're actually seeing in the bank
You're ready to scale spend and need creative, targeting and reporting to keep pace together
How Evolution Media approaches ROAS
We run Meta, TikTok, Google and LinkedIn paid media in-house alongside our own video and podcast studio, so creative testing and campaign management sit under one roof rather than being split across separate suppliers who don't talk to each other. Add in email automation and ecommerce consultation, and the same team optimising your ad account is also looking at AOV, conversion rate and what happens after someone clicks, not just the number in the dashboard.
If your ROAS has plateaued, or you're not sure whether the number your ad platform is showing you is telling the whole story, we're happy to take a look. Book a discovery call or drop us a line at llew@evosales.co.uk / +44 139 232 1292.
FAQs
What's a good ROAS for ecommerce?
Work out your break-even ROAS (1 ÷ gross margin) first, then aim 30 to 100% above it depending on your costs and growth stage. A generic “3:1 rule” ignores your margin entirely.
How do you calculate break-even ROAS?
Divide 1 by your gross margin percentage. A 50% margin breaks even at 2.0x ROAS; a 25% margin needs 4.0x just to cover costs.
Why is my ROAS dropping?
Usually one of three things: creative fatigue (the same ads running too long), a tracking or attribution change on the platform side, or audiences becoming saturated as you scale spend. Check creative age and tracking setup before assuming the market has changed.
Should I focus on Meta or Google?
They do different jobs. Google tends to capture people already looking for what you sell. Meta and TikTok are better at creating that demand in the first place. Most brands need a mix, and the right split depends on your category and how considered the purchase is.
How long does it take to see ROAS improve?
Quick wins such as a creative refresh, cleaning up audiences or fixing tracking often show within a couple of weeks. Structural changes like AOV work and conversion rate fixes tend to take four to eight weeks. Give any strategic shift eight to twelve weeks before judging it properly.
Can I trust Advantage+ and Performance Max ROAS numbers?
Treat them as directional rather than gospel. Both campaign types optimise for what they can measure, which can flatter the platform's own reported number. Cross-check against your actual revenue (MER) before scaling spend aggressively on either.
Does Evolution Media offer a free ROAS or ad account review?
Yes, get in touch and we'll take a look at your current Meta, Google, TikTok or LinkedIn account and flag the quickest wins, whether or not you go on to work with us. See our FAQs page for more on how we work.
Do you only work with South West businesses?
No, we're based in Exeter and prioritise South West clients, but a good number of the brands we run paid media for are national. Location matters less than whether paid media, video and CRO need to work together.
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