If you’ve ever Googled “what is a good ROAS,” you’ve seen the answer: 4:1. Four dollars back for every dollar spent. That number is everywhere.
It also has nothing to do with your business.
That benchmark comes from ecommerce — industries where margins run 20–40% and a $50 sale is a completed transaction. Service businesses are different. Your margins are different. Your sales cycle is different. Your average deal is different. And that means your break-even ROAS is different.
Why the 4:1 Rule Doesn’t Apply
ROAS measures revenue returned per ad dollar. It does not measure profit. An ecommerce business with 35% margins needs roughly a 2.9:1 ROAS just to break even on ad spend. At 4:1, they’re profitable.
Now run the same math on a service business with 60% gross margins and a $3,000 average job. Your break-even ROAS is much lower — because each dollar of revenue carries more gross profit. You could run a 1.8:1 ROAS and still be net positive after ad spend.
Conversely, if you’re a home services company with high labor costs and 25% margins, you might need a 5:1 or 6:1 ROAS just to cover your ad spend.
How to Calculate Your Break-Even ROAS
| Gross Margin | Break-Even ROAS | Profitable Target |
|---|---|---|
| 25% | 4.00 | 6.0 – 8.0 |
| 35% | 2.86 | 4.3 – 5.7 |
| 45% | 2.22 | 3.3 – 4.4 |
| 60% | 1.67 | 2.5 – 3.3 |
| 70% | 1.43 | 2.1 – 2.9 |
The Problem With Tracking ROAS in a Service Business
ROAS is easy to calculate when revenue shows up in a Shopify dashboard the moment someone checks out. In service businesses, revenue shows up weeks later — after a quote, a follow-up, and a signed agreement.
This means most service businesses are flying blind on actual ROAS. They see ad spend. They do not see attributed revenue unless they’ve deliberately built the tracking to close that loop.
What “Good” Actually Looks Like
For most service businesses running Google Ads with proper tracking, a healthy range is 3:1 to 8:1 depending on margins, average job size, and how well the sales process converts leads to closed revenue.
But the more useful question isn’t whether your ROAS is “good.” It’s whether you know your break-even number and whether your campaigns are above or below it. Everything else is noise.
If you don’t know what ROAS you need to be profitable, you can’t evaluate your campaigns. You’re optimizing for a benchmark that was never designed for your business.
Want help building out the math for your specific margins and deal size? Book a Revenue Decision Review — we’ll run the numbers with you.
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