What is ROAS (return on ad spend)?

ROAS expresses how much revenue your advertising returns per unit of budget spent. It is a pure revenue figure and contains no cost of goods or margin, which is why it is the first number in every ad dashboard but never the last.

How do you calculate ROAS?

ROAS = revenue from ads ÷ ad spend. A ROAS of 3 means every unit invested generated 3 in revenue. Expressed as a percentage that is 300 %.

What are good ROAS benchmarks?

In e-commerce 3–5x is a solid target and profitable growth usually starts around 4x. B2B and SaaS campaigns often reach 2–4x because buying cycles are longer. Retailers with high margins can aim for 6–10x.

Is a higher ROAS always better?

Not necessarily. A high ROAS says nothing about profit while the margin is missing: the break-even ROAS depends on margin alone — at a 50 % margin it sits at 2x, and below that you lose money despite the revenue. What matters is that your ROAS clears your own break-even, not that it beats someone else's benchmark.

Why does my ROAS drop when I raise the budget?

Because the readiest buyers get reached first. Every extra dollar buys reach that sits a little further from the purchase, so the marginal return falls while the average still looks fine. When you scale, judge the ROAS of the added budget, not of the campaign as a whole.

Why does Meta report more revenue than my shop?

Each platform attributes conversions by its own rules, and several platforms claim the same order at once. Add the timing gap: a click today, a purchase in two weeks, booked by the platform on the click date and by your shop on the purchase date. The sum of platform-reported revenue routinely exceeds real total revenue. Marketing efficiency ratio at company level is the sanity check.

Do returns and sales tax count in ROAS?

By default yes, and both inflate the number. At a 20 % return rate a reported 4.0 is really 3.2, and sales tax was never revenue you keep. If you want the figure to mean something, send the platform a net conversion value with expected returns already deducted.

ROAS Calculator

Work out your return on ad spend — how much revenue each unit of budget brings back, and where your margin turns that into profit.

Ad spend ($) Total spend across the campaign(s) Revenue from ads ($) Revenue you can attribute directly

ROAS

2.5x

Revenue ÷ ad spend

ROAS (%)

250%

Return on ad spend as a percentage

A ROAS of 4.0 means 400 %: four dollars of revenue for every dollar spent. Revenue is not profit, though. What survives cost of goods shows up in the marketing ROI calculator, not here.

ROAS benchmark

0x 1x 2.5x 4x ≥ 5x

Loss zone Break-even Profitable

Gross margin (%)(optional)

The share of revenue left after deducting the cost of goods. The calculator uses it to derive the break-even ROAS below which you lose money.

→ Work it out here

Profit sensitivity

Current profit

—

at the current spend and margin

Break-even ad spend

—

Enter a gross margin

The curve assumes a constant ROAS. In practice ROAS often falls as budget rises sharply (diminishing returns), so read the chart as orientation rather than as a forecast.

Next step

Marketing Cockpit

See how your ROAS sits alongside acquisition cost, margin and customer value.

ROAS meaning: return on ad spend, and what it leaves out

Your ROAS (return on ad spend) is the first figure anyone looks at when judging a campaign. It says how efficiently the budget works: a ROAS of 2.5 means every unit spent brought back 2.50 in revenue. What it does not say is whether you made money — it is a pure revenue ratio, with no cost of goods, shipping or overhead in it. That is why a ROAS of 4x can be comfortable at a 60 % margin and a loss at 20 %.

ROAS = revenue from ads ÷ ad spend

How to calculate ROAS on a shopping campaign

A Google Shopping campaign returns $9,000 of revenue on a $2,000 budget:

Ad spend$2,000

Revenue from the campaign$9,000

ROAS = 9,000 ÷ 2,000 = 4.5x

At a gross margin of 40 % the break-even ROAS sits at 2.5x, so this campaign clears it comfortably and produces real profit. Enter your own margin above and the chart shows where that line falls for you.

What belongs in your ad spend

The denominator is rarely as obvious as the formula suggests. Count only what goes to the platform and you flatter every campaign you run.

Ad spend at the platform The money that goes straight to Google, Meta or Amazon.

Agency and freelancer fees When they can be tied to the campaign.

Creative production Spread across the run, not dumped on one month.

Internal salaries Only in a genuine full-cost view. Otherwise leave them out.

Tooling and tracking fees Pro rata, if they would not exist without the campaign.

Payment processing fees Those belong on the revenue side, not in ad cost.

Which lines you include is a decision, not a truth. It only has to stay the same across every channel, or you are comparing numbers with different denominators.

Which revenue belongs in the numerator

Ad platforms count every conversion they can claim, which is almost always too many. Three corrections make the number honest: subtract returns — at a 20 % return rate a reported 4.0 is really 3.2. Use net, not gross — sales tax was never your revenue. Separate secondary conversions — newsletter sign-ups and add-to-cart events do not belong in the same bucket as purchases, or the metric ends up measuring intent instead of money.

Good ROAS by industry — and why the number means nothing without your margin

These reference values are misleading without margin context — what decides the outcome is your own break-even ROAS (1 ÷ gross margin), which this calculator derives. What that threshold means for your bidding, the highest CPA and CPC you can still pay, comes out of the break-even ROAS calculator.

E-commerce (average) approx. 3–5x

B2B / SaaS (first deal) approx. 2–4x

High margin / luxury approx. 6–10x

Whether a value is good is always decided by your own margin: 4x can mean a loss at a 20 % margin and a comfortable result at 60 %. Treat the table as a sanity check on the order of magnitude, never as a target to hit.

ACOS vs ROAS: the same number, written upside down

ROAS and ACOS describe one relationship in two directions. ACOS is simply the reciprocal, expressed as a percentage.

ROAS 10.0x ACOS 10 %

ROAS 5.0x ACOS 20 %

ROAS 4.0x ACOS 25 %

ROAS 2.5x ACOS 40 %

ROAS 2.0x ACOS 50 %

ROAS 1.0x ACOS 100 %

Amazon sellers think in ACOS, everyone else in ROAS. Both are ad spend ÷ revenue × 100, which is 1 ÷ ROAS. The break-even version sits on the Amazon ACOS page.

Improving return on ad spend: targeting, creative and landing page

Segment your audiences: exclude weak audiences and scale the top segments — precise targeting often lifts ROAS by 20–40 %.
Work on landing page conversion: raising conversion rate by a single percentage point lifts ROAS without any additional budget. It is usually the cheapest lever available.
Read channel ROAS alongside a blended figure: channel-level attribution has been less reliable since iOS 14. A blended efficiency ratio across all channels keeps the picture honest.

ROAS or profit: which number should decide the budget

ROAS measures revenue against advertising cost alone — production, shipping and overhead stay outside. Return on marketing investment brings the gross margin in and shows what is actually left: a ROAS of 2.5x sounds solid but says nothing about profit until the margin is applied. At a 50 % margin that same ROAS yields a marketing return of 25 %; below the break-even ROAS (2x at a 50 % margin) you are losing money despite the revenue. Use ROAS to compare campaigns against each other, and the margin-adjusted figure to decide whether to spend at all.

ROAS by platform: Google Ads, Meta and Amazon

The formula is the same everywhere; the number underneath is not. Each platform counts revenue by its own rules and hands you a different result. Three pages with their own benchmarks and arithmetic:

Google Ads ROAS — Industry medians from 21,000+ stores and how Target ROAS bidding works.
Meta ROAS — Industry medians from 40,000+ stores and what the attribution window does.
Amazon ACOS and ROAS — Conversion both ways, plus break-even ACOS from your own margin.

Background & sources

ROAS benchmarks scatter enormously by industry, channel and margin; they are orientation only — your own break-even ROAS is the hard limit.

WebFX — «Average ROAS by Industry»

Frequently asked questions

What is ROAS (return on ad spend)?: ROAS expresses how much revenue your advertising returns per unit of budget spent. It is a pure revenue figure and contains no cost of goods or margin, which is why it is the first number in every ad dashboard but never the last.
How do you calculate ROAS?: ROAS = revenue from ads ÷ ad spend. A ROAS of 3 means every unit invested generated 3 in revenue. Expressed as a percentage that is 300 %.
What are good ROAS benchmarks?: In e-commerce 3–5x is a solid target and profitable growth usually starts around 4x. B2B and SaaS campaigns often reach 2–4x because buying cycles are longer. Retailers with high margins can aim for 6–10x.
Is a higher ROAS always better?: Not necessarily. A high ROAS says nothing about profit while the margin is missing: the break-even ROAS depends on margin alone — at a 50 % margin it sits at 2x, and below that you lose money despite the revenue. What matters is that your ROAS clears your own break-even, not that it beats someone else's benchmark.
Why does my ROAS drop when I raise the budget?: Because the readiest buyers get reached first. Every extra dollar buys reach that sits a little further from the purchase, so the marginal return falls while the average still looks fine. When you scale, judge the ROAS of the added budget, not of the campaign as a whole.
Why does Meta report more revenue than my shop?: Each platform attributes conversions by its own rules, and several platforms claim the same order at once. Add the timing gap: a click today, a purchase in two weeks, booked by the platform on the click date and by your shop on the purchase date. The sum of platform-reported revenue routinely exceeds real total revenue. Marketing efficiency ratio at company level is the sanity check.
Do returns and sales tax count in ROAS?: By default yes, and both inflate the number. At a 20 % return rate a reported 4.0 is really 3.2, and sales tax was never revenue you keep. If you want the figure to mean something, send the platform a net conversion value with expected returns already deducted.