What Is ROAS (Return on Ad Spend)?
ROAS is the revenue you earn for every dollar of ad spend. Here's how to calculate it, what counts as good, and why ROI tells you more about actual profit.
What it is
ROAS stands for return on ad spend. It tells you how much revenue you earn for every dollar you put into advertising. It’s usually written as a multiple — a “4x ROAS” means every $1 of ad spend brought back $4 in revenue. It’s the scoreboard contractors glance at to decide whether an ad campaign is pulling its weight.
The thing to hold onto from the start: ROAS measures revenue, not profit. It’s a top-line number. It tells you the ads are working in the sense that money is coming in — but it says nothing about whether you kept any of that money after paying to do the work.
How to calculate it
The formula is quick:
Revenue from ads ÷ ad spend = ROAS
Say you spent $1,000 on a campaign last month and the jobs it produced were worth $4,000. Your ROAS is $4,000 ÷ $1,000 = 4, or 4x. For every dollar in, four came back.
The honest part is making sure the revenue you count actually came from those ads. If a job would have come in anyway through a referral, crediting it to the ad inflates your ROAS. Tie the revenue to the campaign that produced it — that’s where tracking which leads came from where pays off.
A ROAS under 1x means you spent more than you earned in revenue, before costs. A ROAS of exactly 1x means you broke even on revenue alone — which, after the cost of doing the work, is a loss. So even the raw number needs context.
Why it matters for contractors
ROAS matters because it’s fast. When you’re running ads across a few channels, ROAS lets you compare them at a glance and shift budget toward whatever’s bringing back the most revenue per dollar. That speed is genuinely useful for steering month to month.
But speed comes with a blind spot. A high ROAS can still lose you money. Picture two contractors with a 4x ROAS. One runs a high-margin service and keeps a healthy chunk of that revenue as profit. The other runs a low-margin, materials-heavy job where most of the revenue goes straight back out the door — same 4x, but the second contractor might be barely breaking even or losing money once labor and materials are paid.
That’s the catch with ROAS: it stops counting at revenue. For the full truth you need to bring in your costs, and that’s where ROI comes in.
ROAS vs. ROI
These two get used interchangeably, but they answer different questions. Here’s the split.
| ROAS (Return on Ad Spend) | ROI (Return on Investment) | |
|---|---|---|
| What it compares | Revenue to ad spend | Profit to total cost |
| Formula | Revenue ÷ ad spend | (Profit − cost) ÷ cost |
| Counts your job costs? | No | Yes |
| Shown as | A multiple, like 4x | A percentage, like 150% |
| Best for | Quickly comparing campaigns | Knowing if you actually made money |
| Blind spot | Ignores margins and overhead | Slower; needs full cost data |
Here’s how they diverge with numbers. Say that 4x campaign earned $4,000 on $1,000 of ad spend. ROAS is 4x and looks great. But suppose the labor and materials to do those jobs cost $2,500, on top of the $1,000 in ads. Your total cost is $3,500, your profit is $4,000 − $3,500 = $500, and your ROI is $500 ÷ $3,500 = about 14%. Still positive, but a long way from the “4x” headline. ROAS told you the ads worked; ROI told you what you actually kept.
Common mistakes
- Treating ROAS as profit. It’s a revenue number. A great ROAS with thin margins can still be a losing campaign.
- Crediting revenue that wasn’t from ads. Counting referral or repeat work as ad revenue inflates ROAS and leads you to overspend.
- Ignoring your margin. The same ROAS means very different things at 50% margin versus 10%. Always read ROAS against how much you actually keep.
- Skipping ROI entirely. ROAS is the quick check; ROI is the real answer. Use both — don’t make budget calls on ROAS alone.
- Not tying ads to booked jobs. If you can’t connect a campaign to the jobs it actually produced, both ROAS and ROI are guesses.
How it relates to consent-first leads
ROAS rewards channels that turn spend into real revenue, and that’s exactly where lead quality decides the outcome. Spend on shared or low-intent leads and a chunk of your budget produces nothing — your ROAS sinks because most of those clicks and contacts never become jobs.
Consent-first leads tighten that loop. When the person agreed to hear from you, on a channel they chose, and the lead is yours alone, more of your spend lands on people who actually book. At a flat $7 per lead with no shared copies, the cost side of the equation is predictable, so your ROAS reflects lead quality instead of getting buried under waste. And because the price is steady and tied to leads that close, it’s easy to carry the math one step further to ROI — and see the profit, not just the revenue.