ROAS (return on ad spend) is how much revenue you earn for every unit of currency you spend on ads. A ROAS of 4x means RM4, S$4, US$4 or A$4 back for every 1 spent.
The most common ROAS mistake we see is judging ads on revenue without looking at margin. A 3x ROAS sounds great until you realise the product margin is 25%, which means the campaign is losing money on every sale.
The other mistake goes the opposite way: switching off a campaign that looks unprofitable on the first sale, when most of its customers come back and buy again. For clinics and hair salons, we look at the value of a customer over 12 months, not just the first order.
— Kok Han, Founder, OneStopMaker (Google Partner agency)
ROAS = revenue from ads ÷ ad spend
An online store in Kuala Lumpur spends RM2,000 on Google Ads in a month and records RM9,000 in sales from those ads. ROAS = 9,000 ÷ 2,000 = 4.5x (often written as 450%).
ROAS uses revenue, not profit. If your profit margin is 30%, you keep only 30 cents of every dollar in sales, so you need at least 3.33 back for every 1 spent just to break even:
Break-even ROAS = 1 ÷ profit margin
| Profit margin | Break-even ROAS |
|---|---|
| 20% | 5.0x |
| 30% | 3.33x |
| 50% | 2.0x |
| 70% | 1.43x |
So the store above, at 4.5x ROAS, is profitable on a 30% margin but losing money on a 20% margin. There's no universal "good ROAS"; it depends on your margins.
If you sell services and your sales happen offline, Google won't see the revenue automatically. You can estimate it: leads × close rate × average sale value. For example, 30 leads × 20% close rate × US$2,500 = US$15,000 in revenue. Better still, import your closed deals back into Google Ads (offline conversion import) so it can optimise for real customers, not just form fills.
Google's Target ROAS bid strategy automatically adjusts bids to hit the return you set, for example 500%. It works best when you're tracking conversion values accurately and have a steady volume of conversions. Set the target too high and Google will show your ads less; too low and you may spend more than you can afford.
No. ROAS compares revenue with ad spend only. ROI (return on investment) compares profit with all costs, including product costs, staff and agency fees. A campaign can have a healthy ROAS and still have a negative ROI.
If customers come back to buy again, their lifetime value is higher than the first sale. Many businesses accept a lower first-sale ROAS for that reason. Just be clear about which you're measuring.
ROAS & Cost per Lead Calculator › Calculate your ROAS, break-even ROAS and profit after ads in seconds.
Google PartnerVerified agency
