We manage both channels for Hong Kong SMBs daily. Here's what the data says — not opinions, not theory, but actual CPA and ROAS benchmarks from live campaigns.
- HK$85 — Avg. Google CPA
- HK$42 — Avg. Meta CPA
- 3.2× — Meta Avg. ROAS
- 4.8× — Google Avg. ROAS
The Short Answer: It Depends on Your Business Model
This isn't a "one is better than the other" article. After managing HK$2M+ in combined ad spend across both platforms for Hong Kong businesses, the answer is clear: Google Ads wins on intent capture, Meta Ads wins on demand creation.
The right choice depends on three factors: whether your customer is actively searching, your average order value, and your sales cycle length.
💡 Key Insight
Google Ads intercepts people who already want what you sell. Meta Ads creates desire in people who didn't know they wanted it. Most Hong Kong businesses need both — the question is how to split the budget.
Cost Per Acquisition: Head-to-Head by Industry
| Industry | Google CPA | Meta CPA | Winner |
|---|---|---|---|
| Money Lending | HK$120 | HK$45 | Meta |
| Luxury Watch Buyback | HK$95 | HK$55 | Meta |
| Diamond Buyback | HK$110 | HK$60 | Meta |
| TCM Clinics | HK$75 | HK$38 | Meta |
| E-Commerce (Beauty) | HK$65 | HK$28 | Meta |
| B2B Services | HK$180 | HK$220 | |
| Professional Services | HK$85 | HK$95 | |
| Education / Courses | HK$55 | HK$35 | Meta |
📊 Pattern
Meta Ads wins on CPA in 6 out of 8 industries. Google only wins where the buyer has high intent and specific search behaviour — B2B and professional services.
ROAS: Where Google Flips the Script
CPA only tells half the story. When we look at ROAS, Google Ads often outperforms Meta — because high-intent clicks convert at higher rates and higher order values.
| Metric | Performance |
|---|---|
| Google Ads — Avg. ROAS | 4.8× |
| Meta Ads — Avg. ROAS | 3.2× |
| Google — Conversion Rate | 6.8% |
| Meta — Conversion Rate | 2.8% |
| Google — Avg. Order Value | HK$850 |
| Meta — Avg. Order Value | HK$520 |
⚠️ The ROAS Trap
Don't compare ROAS across platforms without accounting for attribution windows. Meta's default 7-day click / 1-day view attribution inflates numbers. Use UTM + server-side tracking for the real picture.
Which Platform Wins for Your Industry?
🟢 Google Wins
- B2B Services — 4.2× ROAS
- Professional Services — 5.1× ROAS
- High-Ticket Retail — 4.8× ROAS
- Local Services — 3.9× ROAS
- Best for — High intent, high AOV
🔵 Meta Wins
- E-Commerce — 3.8× ROAS
- Beauty & Wellness — 4.1× ROAS
- F&B / Restaurants — 2.9× ROAS
- Education / Courses — 3.5× ROAS
- Best for — Visual products, impulse
The Decision Matrix
| Your Situation | Best Platform | Why |
|---|---|---|
| Customers search for your product | Capture existing demand at moment of intent | |
| Visual / impulse-driven product | Meta | Video + image creative creates desire |
| AOV over HK$500 | Higher intent = higher conversion justifies CPA | |
| AOV under HK$300 | Meta | Low CPA needed for low-margin products |
| Need leads via WhatsApp | Meta | CTWA is Meta-exclusive, highly effective in HK |
| Local service business | Maps + "near me" queries drive foot traffic | |
| Brand new category | Meta | Nobody searches for what doesn't exist yet |
| Buyback / acquisition | Both | Google captures sellers; Meta creates awareness |
| Budget under HK$15K/mo | Meta | Meta works with smaller budgets |
| Budget over HK$50K/mo | Both | Enough for proper dual-channel strategy |
Optimal Budget Split
| Business Type | Meta | Rationale | |
|---|---|---|---|
| E-Com (Low AOV) | 20% | 80% | Meta's lower CPA drives volume |
| E-Com (High AOV) | 40% | 60% | Google Shopping captures intent |
| Lead Generation | 30% | 70% | Meta CTWA scales efficiently |
| B2B Services | 70% | 30% | Decision makers search Google |
| Local Services | 60% | 40% | Maps + near me queries |
| Buyback | 35% | 65% | Meta awareness; Google captures |
💡 Budget Rule
Start 100% on primary platform. Once you hit CPA ceiling (diminishing returns), allocate 20-30% to secondary. Never split 50/50 from day one.
Frequently Asked Questions
Which is better for Hong Kong businesses — Google Ads or Meta Ads?
Neither is universally better. Google averages 4.8× ROAS with HK$85 CPA. Meta averages 3.2× ROAS with HK$42 CPA. Google captures existing demand (search intent); Meta creates new demand (audience discovery). Most HK businesses with sufficient budget should run both with 60-70% on the primary channel.
How much should I spend on Google Ads vs Meta Ads?
Under HK$15K/month: choose one platform (usually Meta). Over HK$50K/month: run both with 60/40 or 70/30 split. Minimum effective spend: HK$5K/month for Meta, HK$8K/month for Google Search in HK.
What is CTWA and why does it matter?
CTWA (Click-to-WhatsApp Ads) is Meta-exclusive. Clicking the ad opens WhatsApp directly. With 90%+ WhatsApp penetration in HK, CTWA achieves 30-50% lower CPA than traditional lead forms.
Can I run both at the same time?
Yes — they're complementary. Meta creates awareness (top funnel), Google captures searchers (bottom funnel). Use UTM parameters and server-side tracking for proper attribution.
What's the average Meta Ads CPA in Hong Kong?
Ranges from HK$28 (e-commerce/beauty) to HK$60 (luxury buyback). Overall average ~HK$42 per acquisition.
Is Google Ads too expensive for small businesses?
Google CPC averages HK$8-25, but 6.8% conversion rate offsets the cost. Small businesses with HK$8-10K/month can succeed by targeting long-tail, high-intent keywords.
How do I measure which platform works?
Don't rely on platform metrics alone. Set up: UTM parameters, GA4 conversion tracking, Meta CAPI, and track real revenue per lead source. Measure actual revenue, not platform-reported conversions.
Not Sure Which Platform Is Right?
We'll analyse your business, industry, and goals — then tell you exactly where to spend your first dollar.
