What is a Good ROAS? How to Measure Return for Your Business.

“What’s a good ROAS?” is one of the most asked questions in paid advertising, and one of the most badly answered. Search it and you’ll be told 4x, as if one number could be right for a jeweller and a discount homewares store at the same time.

ROAS, or return on ad spend, is simple to calculate: revenue from your ads divided by what you spent on them. A ROAS of 4 means you made $4 for every $1 you put in. The hard part isn’t the maths. It’s knowing whether 4 is brilliant or a slow way to go broke.

The honest answer is that a good ROAS is the one that clears your margin and still leaves profit. That number is different for every business, and here’s how to find yours.

What ROAS actually measures

ROAS measures revenue, not profit. That distinction is the whole game. If you spend $2,000 on ads and those ads bring in $8,000 of sales, your ROAS is 4. It says nothing about what those sales cost you to fulfil.

That’s the difference between ROAS and ROI. ROI is built on profit, ROAS is built on revenue. Because ROAS ignores your costs, a headline ROAS only becomes meaningful once you hold it against your margin. A 4x return is a triumph on a 70 percent margin and a quiet loss on a 20 percent one.

Why there’s no universal good ROAS

Your breakeven ROAS is the point where the revenue from your ads exactly covers the cost of the product you sold, with nothing left. The maths is short: breakeven ROAS is 1 divided by your gross margin.

On a 50 percent margin, you break even at a ROAS of 2. On a 25 percent margin, you need a ROAS of 4 just to stand still. So when someone quotes you a good ROAS without asking about your margins, they’re guessing. Here’s the floor for a range of margins.

Read the table and the myth of the universal good ROAS falls apart. A 4x return leaves a 70 percent margin business swimming in profit and a 20 percent margin business underwater. Same number, opposite outcome.

From the studio Whenever someone tells me they want a 4x ROAS, my first question is why 4. Almost nobody has an answer beyond having read it somewhere. Work back from your own margin instead. It takes about ten seconds with the calculator further down this page, and you end up with a number you can actually defend when someone asks why, which is worth more than any benchmark I could quote you.

So what should you actually aim for?

Breakeven is the floor, not the goal. A healthy target ROAS sits comfortably above your breakeven, with enough headroom to cover the costs the margin figure leaves out: your overheads, your team, your software, your shipping, and the profit you’re actually in business for.

A few things move the right target for you.

• Lifetime value. If a first order leads to repeat purchases, you can accept a lower ROAS on that first sale, because the customer is worth more than one transaction.
• Prospecting versus retargeting. Retargeting almost always shows a higher ROAS, but a lot of it’s people who would have bought anyway. Judge cold prospecting on its own, harder number.
• Growth stage. Chasing the highest possible ROAS often means spending too little. If every dollar is profitable, the constraint isn’t efficiency, it’s how much volume you’re leaving on the table.

When you’re ready to translate a target into a budget, start with how to set the right budget for paid ads.

Platform ROAS versus the ROAS in your bank

There’s the ROAS a platform reports, and the ROAS your accountant would recognise. They’re rarely the same. Meta and Google both count sales their own way, and since the iOS 14 tracking changes those counts have drifted further from reality, sometimes over-claiming a sale two platforms both take credit for, sometimes missing one entirely.

This is why a single-platform ROAS should never be your only number. Hold it against your total revenue with marketing efficiency ratio, and read how to measure paid performance and how results should be reported so the ROAS you act on is the real one.

How to improve your ROAS

Most people try to lift ROAS by cutting spend. That works for a week and stalls. The durable gains come from the parts of the equation that aren’t the ad account.

• Widen your margin. Pricing and cost of goods move your breakeven ROAS directly, so every point of margin makes your target easier to clear.
• Lift average order value. Bundles, upsells and thresholds mean the same click is worth more.
• Convert better. A stronger landing page turns the same traffic into more sales, which is the heart of conversion rate optimisation.
• Fix the leak. If the clicks come but the sales don’t, the problem is usually the page or the offer. Read why your ads get clicks but no sales.
• Count the whole funnel. Paid often earns credit slowly, feeding email and organic, which is how paid ads support the rest of your marketing.

ROAS targets and the 2026 Google Ads change

Setting the right number matters more from 17 August 2026, when Google changes how budget-limited Target ROAS and Target CPA campaigns bid. Today a capped campaign often beats its target. After the change, it will perform closer to the target you set, so a target pulled from a blog rather than your margin becomes an expensive mistake. We covered it in full in the Google Ads target-based bidding change.

The bottom line

You can’t look up a good ROAS, you can only calculate yours: the return that clears your margin, covers your overheads and funds the growth you want, measured against your real revenue rather than a single platform’s version of events.

Work out your breakeven, set a target above it, and check it against reality. If you want a team to build the account around that number, that’s what our paid advertising service is for.

Frequently asked questions

What’s a good ROAS?

A good ROAS is one that clears your gross margin and leaves profit after overheads. There’s no universal figure. Your breakeven ROAS is 1 divided by your margin, and a healthy target sits comfortably above that, so the same number can be strong for one business and a loss for another.

What’s a good ROAS for ecommerce?

You’ll often see 3 to 4x quoted for ecommerce, but that only means something against your margin. A store on a 30 percent margin breaks even at about 3.3x, so 3x is a loss, while a store on a 60 percent margin breaks even at 1.7x and profits well below 3x. Start from your margin, not the benchmark.

What’s breakeven ROAS?

Breakeven ROAS is the return where your ad revenue exactly covers the cost of the product sold, with nothing left over. It’s 1 divided by your gross margin, so a 40 percent margin gives a breakeven ROAS of 2.5. Below it you lose money on the sale, above it you start to profit.

Is a higher ROAS always better?

No. A very high ROAS often means you’re spending too little and leaving profitable sales uncaptured. Once every dollar is clearly profitable, more budget usually beats a higher ROAS, because you’re buying growth you can afford rather than protecting an efficiency number.

What’s the difference between ROAS and ROI?

ROAS is based on revenue, so it’s ad revenue divided by ad spend. ROI is based on profit, so it accounts for the cost of goods and other expenses. ROAS is quicker to read day to day, but ROI tells you whether you actually made money.

Why is my platform ROAS different from my real ROAS?

Because attribution is imperfect. Platforms count sales their own way and, since the iOS 14 tracking changes, often over-claim or under-report. The fix is to sanity-check platform ROAS against your total revenue using marketing efficiency ratio, so you act on the real number.