“Viator or Google Ads?” is the wrong question. The right one: what does each channel actually cost you per booking — and what do you own once it’s paid? Most tour operators have never run that comparison, because one cost arrives as a monthly invoice and the other quietly disappears inside the OTA payout before the money ever reaches your account.
This post runs the comparison properly: what Viator really takes, what Google Ads really costs, and the one factor that decides which wins for your business. It’s one piece of the bigger picture on reducing OTA commission as a tour operator — here, we stay strictly on the numbers.
What does Viator actually cost per booking?
If you’ve seen Viator described as charging 8%, that’s the affiliate rate — what referral partners earn for sending Viator traffic — and it’s often confused with the supplier commission. The affiliate figure is the one Viator publishes; the supplier figure, the one that actually comes off your bookings, is the negotiated 20–30% above. Always reconcile against your own payout statements rather than anything you read online, this article included.
Here’s what the typical rate looks like in pounds — illustrative arithmetic, not a quote. On a £180 booking at 25% commission, Viator’s cut is £45. A hundred of those bookings in a season and £4,500 has left the business before you’ve paid a single guide. The defining feature of commission isn’t its size — it’s that it never changes. Your first booking and your thousandth cost the same percentage, forever, and you end the season with no email list, no remarketing audience and no direct relationship to show for the spend.
Nor is this a Viator quirk: the same SambaHQ guide puts GetYourGuide in the same 20–30% band, varying by country. Switching marketplaces doesn’t change the economics — it changes the logo on the statement.
What does Google Ads cost per booking?
That honesty matters, because plenty of articles will hand you a confident cost-per-click or cost-per-booking benchmark. Treat them all with suspicion. A walking-tour operator in York and a multi-day safari company bid in completely different auctions; your real number emerges from your own campaign data within weeks of launch, and that number — not a benchmark — is what belongs in this comparison.
What we can say structurally is this: commission is a flat tax, while advertising is a system with levers. Negative keywords, better ad copy, tighter landing pages and smarter bidding all push the cost of each booking down over time — the work we do in Google Ads management for tour operators exists precisely because those levers compound. Viator offers you no equivalent lever: 25% in January is 25% in December.
And the booking itself is different. A Google Ads booking lands on your site, pays into your account, and hands you the customer’s email address, their consent for marketing, their review and their repeat business. Commission is rent; ad spend run properly is the purchase of a machine you own.
What a £180 booking costs you in commission
Illustrative arithmetic on a £180 booking — not a quote. Commission ranges cited to SambaHQ’s OTA commission-rates guide; your real figure is on your payout statement. Google Ads cost varies by niche, season and location.
The comparison that matters: acquisition cost vs lifetime value
Put the two channels side by side on the dimensions that decide long-term profitability, and the shape of the decision becomes obvious:
| Dimension | Viator | Google Ads |
|---|---|---|
| Cost basis | Fixed percentage of every booking | Variable — you set the budget, the auction sets the price |
| Direction over time | Never falls; programmes like Accelerate raise it | Can fall as the account optimises |
| Who owns the customer | The marketplace | You |
| Repeat bookings | Often re-commissioned through the platform | Direct — near-zero acquisition cost second time |
| Data you keep | Minimal | Email, source, behaviour, audiences |
| Risk | Rate rises, ranking changes, delisting | Wasted spend if tracking or management is poor |
The repeat-booking row is the quiet decider. A direct customer’s second booking costs you almost nothing to acquire; an OTA customer’s second booking is commissioned all over again, at full rate. Comparing the two channels on the first booking alone systematically flatters Viator — the gap widens every year the customer stays with you.
The catch: you can’t compare what you can’t measure
This is the trap that quietly kills the comparison for most operators. OTA economics are spoon-fed: bookings in, commission out, one PDF. Your Google Ads cost per booking, by contrast, depends on your booking platform passing conversions back to Google — and the redirects, iframes and third-party domains most booking systems use are notorious for dropping them. We’ve documented exactly why booking systems break conversion tracking and what it does to your numbers.
If your tracking is missing even a slice of your bookings, every pound of ad spend looks proportionally worse than it is — and Viator wins a comparison it should have lost. Before you judge either channel, score your booking tracking in 20 minutes with our free self-assessment. It tells you whether your cost-per-booking figure can be trusted at all.
The free option almost everyone misses: Google Things to Do
One more entry belongs in this comparison, and it costs nothing. The same SambaHQ commission guide lists Google Things to Do at 0% commission — in their words, free, not an OTA. It surfaces your tours directly in Google’s travel results with the booking going to your site, not a marketplace. For an operator paying a quarter of every OTA booking away, a free listing channel sitting in the same search results is not a footnote — it’s the middle path between renting demand from Viator and buying it through ads.
When Viator still wins
An honest comparison cuts both ways, and there are situations where the marketplace genuinely earns its commission:
- You’re new, with no demand history. Viator brings an audience on day one; Google Ads needs time and data before it finds its level.
- You’re entering a market where nobody searches for you yet. The OTA’s brand does the trust-building you haven’t had time to do.
- You have spare capacity on undersold departures. A commissioned seat beats an empty one every single time.
- You have no in-house marketing capability and no partner. A badly run ad account can cost more per booking than any commission; the OTA at least guarantees competence.
The goal isn’t to delete your Viator account. It’s to stop Viator being the only way customers reach you — reducing dependency, not eliminating the channel, with your most profitable, repeatable bookings moving direct first.
If the numbers convince you to shift spend, two companion reads finish the job: our tour operator marketing budget method shows how to fund advertising from the commission you’d save — so the budget pays for itself — and the full travel marketing guide for tour operators shows where paid search sits among everything else you could be doing.
Frequently asked questions
What commission does Viator charge tour operators?
According to SambaHQ’s OTA commission rates guide, Viator’s supplier commission is 20–30%, typically 25%, and rates are negotiated rather than published. Joining Viator’s Accelerate 2.0 programme adds 5–10 additional commission points, producing an effective rate of 30–35%. Because every contract differs, the only authoritative figure is the one on a supplier’s own payout statement.
Is Google Ads cheaper than Viator?
Sometimes — there is no universal answer, because Google Ads cost per booking varies with niche, season and location while Viator’s commission is a fixed percentage. The structural difference favours advertising over time: a well-managed account’s cost per booking can fall as it optimises, commission never does, and an advertised booking includes the customer relationship. The comparison only settles when run on an operator’s own tracked numbers.
Can a tour operator use both Viator and Google Ads?
Yes, and most established operators should. Viator fills spare capacity, reaches markets a small brand cannot, and de-risks new tours; Google Ads builds direct bookings the operator owns. The sensible aim is reducing OTA dependency rather than eliminating it — moving the most profitable, repeatable bookings direct while the marketplace keeps doing the jobs it is genuinely good at.
Why is my Viator commission different from the 8% I read about?
The widely quoted 8% is Viator’s published affiliate rate — what referral partners earn for sending traffic — and it is often confused with the supplier commission. The supplier commission, the share deducted from a tour operator’s bookings, sits at 20–30% according to SambaHQ’s OTA commission guide, and is set by negotiation. A supplier’s contract and payout statement show the real figure.
How do I work out my Google Ads cost per booking?
Divide total advertising cost — ad spend plus any management fee — by the number of bookings the campaigns produced, measured over a full season rather than a single week. The figure is only trustworthy if conversion tracking actually captures bookings: tour booking platforms frequently break tracking, so verifying measurement comes first, before any spend decisions are made on the result.
Want this comparison run on your real numbers?
Send us your OTA statements and your booking data and we’ll run the cost-per-booking comparison on your actual figures — commission paid, realistic direct cost, and which bookings to shift first. Free, specific, and yours to keep whether or not we work together.
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