Google Ads vs Meta Ads: Which Is Actually Making You Money? (How to Tell)

If you're a small business running google ads vs meta ads small business style — meaning some spend on each, hoping one will reveal itself as the winner — you've probably opened both dashboards, looked at the numbers, and walked away more confused than when you started. Google says 4.8x ROAS. Meta says 3.1x. Are they comparable? No. They're not even measuring the same thing.

The answer to 'which platform is actually making me money?' requires a single blended view with consistent attribution across both. Until you have that, you're guessing — and the guesses always favor whichever platform you check first in the morning.

Why you can't compare Google and Meta using their own dashboards

Each platform reports the numbers that make itself look good. That's not malicious — it's the default in every analytics tool that has a financial relationship with you. The result is two dashboards using different attribution models, different time windows, and different definitions of 'conversion.' Comparing them is like comparing your weight on two scales calibrated by different people in different gravitational fields.

Three concrete things differ:

• Attribution model — Google defaults to data-driven; Meta defaults to last-click with view-through.
• Attribution window — Google: 30-day click. Meta: 7-day click + 1-day view.
• Conversion definition — Google counts whatever event you sent it; Meta counts whatever pixel event fired. These are often not the same event.

The attribution window problem

This one is sneaky. If your sales cycle is 14 days and you compare Google's 30-day window to Meta's 7-day window, Google looks far better than it deserves to. Half the conversions Meta drove are happening on day 10–14 and being credited to whichever platform owns the last click — usually Google branded search.

Three options to fix it:

1. Normalize windows. Set both platforms to a 7-day window. You'll lose some 'credit' from Google but you'll be comparing apples to apples.
2. Use a third-party blended view. Tools (Ad Lens included) apply consistent attribution across both, so the comparison is fair.
3. Run a holdout test. Pause one platform in one geography for two weeks and measure what happens to total revenue. Expensive, but unambiguous.

How to set up consistent attribution across both platforms

The minimum bar for a fair comparison:

1. Pick one conversion event (first payment in Stripe is the gold standard) and feed it to BOTH platforms via server-side conversions API. No more 'lead' on one side and 'purchase' on the other.
2. Set both platforms to the same attribution window — 7-day click is the safest default.
3. Look at blended performance weekly. Daily comparisons swing too much based on which platform happens to win the last click that day.

Google vs Meta 2026 benchmarks by business type

Based on aggregated 2026 small business data:

• Google Ads median ROAS: 3.52x — strongest for high-intent (someone searching for what you sell)
• Meta Ads median ROAS: 2.8x — strongest for demand generation (introducing your product to people who weren't searching)
• Ecommerce skews Meta-positive. Local services skew Google-positive. SaaS depends heavily on the offer.
• Combined blended ROAS for businesses running both: 2.5x–3.5x is the realistic range when measured honestly.

A decision framework: when to scale Google, when to scale Meta, when to cut

Use this every Monday:

1. If blended ROAS is climbing AND a platform's individual blended contribution is growing → scale that platform 20% and re-measure in 7 days.
2. If blended ROAS is flat AND one platform's CAC is rising faster than the other → cut the rising-CAC platform by 20% first, not both.
3. If blended ROAS is falling AND both platforms look bad → don't blame the platforms. Look at the offer, landing page, or seasonality before touching budgets.

The 'blended CAC' test

Here's the single test that tells you whether your overall spend is healthy, regardless of platform split:

If (combined spend) ÷ (combined real customers) > (your LTV ÷ 3), something is broken. Stop scaling. Fix the funnel before adding more budget.

It doesn't matter whether Google or Meta is 'winning.' If the combined math doesn't work, neither is winning. Most small businesses skip this test and find out the hard way three quarters later.

The whole point of running both platforms is portfolio effect — different audiences, different intent, different funnels feeding the same revenue line. You can only manage a portfolio if you can see it as a portfolio. Two siloed dashboards aren't a portfolio. They're two stories that don't add up.