To choose a Meta ads agency for a Shopify brand, check four things before you sign: that the ad account, pixel and Shopify data stay in your own name, that the fee is tied to a number you can verify in Meta or Shopify, that the agency makes new creative every month, and that tracking runs through the Conversions API. An agency that fails any one of these can spend your budget well and still leave you worse off when you part ways.
Key Takeaways
- Ownership comes first. The agency should get partner access to your business portfolio, never its own ad account that holds your history.
- Compare fee models with your own numbers. A flat retainer, a percentage of ad spend and a share of sales pay out very differently once spend grows.
- Judge an agency by its creative output and its tracking setup, not by the screenshots in its pitch deck.
If you would rather pay for results than for hours, see how a pay as you scale model works.
What is a Meta ads agency for a Shopify brand?
A Meta ads agency is a company that plans, buys and manages advertising on Facebook and Instagram on a brand's behalf, usually inside the brand's own Meta ad account. For a Shopify brand, the job covers three connected pieces of work: making the ads (images, video, copy), running the campaigns in Ads Manager, and keeping the data flowing between Shopify and Meta so the algorithm knows which ads produced sales.
Some agencies only do media buying and expect you to supply creative. Others make creative and leave the buying to you. The first question in any shortlist is which of the three pieces the agency actually owns, because the gaps are where results get lost.
How we compared the options
- Fee model. How the agency is paid and what that payment rises and falls with.
- Ownership. Who holds the ad account, the pixel and the creative files when the contract ends.
- Creative. Whether new ads are part of the deal, and how many.
- Tracking. Whether the setup uses the Conversions API next to the browser pixel.
- Reporting. Whether results are reported from Meta and Shopify data you can open yourself.
The numbers in the table below are a worked example with round, hypothetical figures, so you can see how each fee model behaves. They are not what any agency charges.
How Meta ads agencies are paid
There are three common ways agencies charge Shopify brands, plus hybrids of them.
Monthly retainer. A fixed fee each month, whatever the results. It is predictable, but the agency is paid the same in a weak month as in a strong one.
Percentage of ad spend. The fee is a share of what you spend on Meta. It grows as your budget grows, which can reward spending more rather than spending well.
Share of sales. The fee is a share of the revenue the ads bring in, measured in Meta or Shopify. The agency earns more only when you sell more, so the definition of "sales the ads brought in" has to be written into the contract.
| Fee model | What the fee follows | Example fee, 30,000 USD spend and 150,000 USD tracked sales | Example fee in a weak month, 30,000 USD spend and 60,000 USD tracked sales |
|---|---|---|---|
| Monthly retainer (example 5,000 USD) | Nothing, it is fixed | 5,000 USD | 5,000 USD |
| Percentage of spend (example 10%) | Ad spend | 3,000 USD | 3,000 USD |
| Share of sales (example 10%) | Tracked sales | 15,000 USD | 6,000 USD |
Read the table this way. In the strong month, the share of sales model costs the most in absolute terms, but the brand also made the most. In the weak month, the retainer and spend models cost the same as before, while the share of sales fee falls with revenue. Which one is "cheaper" depends on your margins, which is why you should know your break even ROAS before you compare proposals. ROAS, or return on ad spend, is the revenue the ads bring in divided by what you spent on them.
For a deeper look at how performance based fees are structured, see our guide to pay for performance agency fee models.
What the pay as you scale model looks like
One example of the share of sales model is Adsome's own, as published on its site. There is no monthly fee, and Adsome makes and runs the ads and pays for the production. The brand pays Adsome 12.5% of the sales the ads bring in, tracked in Meta. If the ads bring back less than 4 times the ad spend in a month, the brand pays Adsome nothing for that month. The ad spend itself goes from the brand's card straight to Meta. It is built for Shopify brands selling more than 100,000 USD a month.
Treat it as one option on the list and run it through the same checks as any other agency.
How to vet a Meta ads agency step by step
- Write down your monthly Shopify revenue, Meta spend, gross margin and break even ROAS before the first call.
- Ask each agency which of creative, media buying and tracking it does itself, and which it subcontracts.
- Ask for partner access only. In Meta Business Suite you add an agency as a partner to your business portfolio, so the ad account, pixel and page stay yours.
- Ask how the agency will connect Shopify to Meta. The answer should include the Facebook and Instagram app on Shopify with the Conversions API turned on, so purchases are sent from the server as well as the browser.
- Ask how many new ads it will make each month and in what formats (static, video, UGC style, product demos).
- Ask to see live ads it has made for other brands in the Meta Ad Library, which shows every active ad a page is running.
- Ask which numbers the fee or the reporting is based on, and confirm you can open the same numbers in your own Ads Manager and Shopify admin.
- Ask what happens when the contract ends: notice period, who keeps the creative files, and how access is removed.
- Compare the proposals on your own numbers, using the table above as a template.
Why creative decides most of the result
Meta's delivery system now does much of the targeting work that agencies used to sell as their edge. Broad audiences and Advantage+ campaigns let the algorithm find buyers, so the biggest lever left in the agency's hands is the ads themselves. An agency that runs the same three ads for months is leaving the algorithm little to work with.
Ask how the agency tests creative: how often new concepts go live, how it decides a test has a winner, and how a winning angle becomes more variations. Our creative testing framework for DTC brands shows what a structured process looks like, and a good agency should be able to describe something with the same level of detail. If it asks you for a brief, our performance creative brief template covers what to put in it.
Why tracking decides whether you can trust the numbers
The Conversions API is Meta's server side connection that sends events such as purchases straight from your store to Meta, instead of relying only on the browser pixel. Browser tracking misses some purchases because of ad blockers, cookie limits and iOS privacy settings, so a setup without the Conversions API under reports sales and gives the algorithm less to learn from.
For a Shopify brand the usual route is the Facebook and Instagram app in Shopify, which handles both the pixel and the Conversions API. An agency should check that it is set up correctly in the first week, and it should show you the event match quality in Events Manager rather than ask you to trust its dashboard.
What we see from the other side of the table
This is Adsome's own observation, from building the pay as you scale model rather than from any one client. Once an agency's fee is tied to tracked sales, the first conversations change. The questions move from "how much will you spend" to "is the Conversions API sending every purchase" and "how many new ads can we make this month", because those two things decide what the agency is paid. The floor in our model, where the brand pays nothing for a month in which the ads bring back less than 4 times the spend, forces the same discipline on us. Whichever agency you choose, ask it to explain what it loses when your results drop. If the honest answer is "nothing", factor that into the decision.
Which fits your situation
- Under roughly 100,000 USD a month in Shopify sales, small team. A retainer with a small, specialist agency or freelancer is often the simplest start, as long as you keep ownership of the account.
- Growing brand with a clear break even ROAS. A share of sales model lines the agency's pay up with yours. Check the tracking definition carefully.
- Large brand with an in house media buyer. Hire for creative production and keep the buying in house.
- Brand that has been burned before. Start with the ownership and exit questions, and only then talk about fees.
If you are weighing broader options, our overview of AI ad agencies and alternatives by brand fit groups them by brand type.
Common Mistakes
- Letting the agency own the ad account. You lose the account history and the pixel data if you leave.
- Comparing fees without your margins. A low fee on unprofitable spend still loses money.
- Accepting reports you cannot verify. Every number should be traceable to Ads Manager or Shopify.
- Skipping the Conversions API check. Weak tracking makes every result look worse and slows learning.
- Buying media management without creative. Fresh ads are the main lever, so a deal without them is half a deal.
- No exit terms. Agree notice, file ownership and access removal before you start.
Want ads that are paid from what they sell? Adsome makes and runs Meta ads for Shopify brands and is paid a share of the sales they bring in.