What does a good return on ad spend actually look like?
A good return on ad spend is typically 3–5× for most service businesses and 4–8× for e-commerce, but ROAS alone is misleading because it ignores margin. A 4× ROAS on a 20% margin product loses money, so profit per customer and customer acquisition cost against lifetime value matter more.
Typical benchmarks
| Business type | Typical ROAS |
|---|---|
| E-commerce | 4–8× |
| Local services | 3–5× |
| High-ticket B2B | 2–4× |
| Subscription | 1–2× on first purchase |
Subscription looks terrible on first purchase and is often the best business of the four, which tells you something about the metric.
Why ROAS on its own misleads
ROAS is revenue divided by ad spend. It says nothing about margin.
- 4× ROAS on a product with 20% margin loses money
- 2× ROAS on a service with 70% margin makes money
Anyone reporting ROAS without knowing your margin is reporting a number, not a result.
What to watch instead
Customer acquisition cost against lifetime value. If a customer costs $90 to acquire and is worth $700 over their time with you, that works — whatever the ROAS headline says.
For most service businesses the practical version is: what does one booked customer cost, and what is one worth?
How to actually improve it
In order of impact, usually:
- Fix conversion first. Doubling conversion halves your acquisition cost with zero extra spend.
- Fix targeting. Fewer, better-matched people beats more people.
- Fix follow-up. Most enquiries that go cold were winnable.
- Then increase spend — only once the first three work.
Most agencies start at step four because it is the easiest to bill for.
Frequently asked questions
What is a good ROAS?
Typically 3–5× for service businesses and 4–8× for e-commerce, but it depends entirely on margin. A 4× ROAS on a 20% margin product loses money.
Why is ROAS a misleading metric?
It measures revenue against ad spend and ignores margin and lifetime value. Customer acquisition cost against lifetime value is a better guide.
How do I improve return on ad spend?
Fix conversion first, then targeting, then follow-up, and only then increase spend. Doubling conversion halves acquisition cost with no extra budget.