A Google Merchant Center agency manages the account that sends your products to Google: Shopping ads, free listings, the Shopping tab and product results in Search. If the data in Merchant Center is wrong, your products don’t show, no matter how much you spend on ads.
This guide explains what the work includes, what it doesn’t, how a first month usually runs and the signs that it’s time to bring in specialists. If you want to see the service itself, visit our Google Merchant Center agency page.
What does Google Merchant Center control?
Merchant Center is the bridge between your online store and Google. Every product you want on Google needs a valid entry there, with a title, price, availability, images, identifiers and shipping details that match your website.
- Shopping ads in Google Ads, including Performance Max campaigns.
- Free product listings on the Shopping tab and other Google surfaces.
- Local inventory for stores with physical locations.
- Promotions and product ratings shown next to your products.
When Merchant Center rejects a product, it disappears from all of these at once.
What does a Google Merchant Center agency do?
1. Account setup and verification
Verifying and claiming your website, configuring shipping, returns and business information, and linking Merchant Center to Google Ads. Many later problems start with a setup that was done in a hurry.
2. Product feed creation and management
Building the feed from your platform (Shopify, WooCommerce, BigCommerce, PrestaShop or a custom store), choosing which attributes to send and keeping it updated automatically, so prices and stock on Google always match your site.
3. Feed optimization
Rewriting titles and descriptions with the words shoppers actually search, filling attributes such as brand, GTIN, color, size or material, and grouping products with custom labels so campaigns can bid by margin, season or best sellers.
4. Fixing disapprovals
Reading the issues Merchant Center reports, diagnosing price and availability mismatches, missing identifiers and policy violations, fixing the root cause and asking Google to review the products again.
5. Ongoing monitoring
Merchant Center changes constantly: new requirements, new policies, products that get disapproved after a store update. An agency checks the account on a schedule instead of waiting for sales to drop.
What does the first month of work look like?
A sound engagement follows a fixed order, because later steps depend on earlier ones. This is the sequence we use as a template, and a store can use it to judge any proposal.
- Access and inventory. Get user access to the Merchant Center account, the platform and the feed tool. Write down how the feed is built today, who changes it and which apps touch product data.
- Account and policy review. Check website claim, shipping, returns, business information and the link to Google Ads against what the website shows.
- Diagnostics triage. List every open product issue, group them by cause and rank the groups by the number of products affected.
- Root-cause fixes. Correct the data at its source (platform fields, supplier files, feed rules) instead of patching rows in the feed.
- Attribute and title work. Fill the attributes the catalog is missing and rewrite titles by category, starting with the products that matter most commercially.
- Segmentation. Add custom labels so whoever runs the campaigns can separate margin tiers, seasonal lines and best sellers.
- Monitoring plan. Agree what is checked weekly and monthly, who is alerted and how changes are reported.
Where does the agency’s work end?
A Merchant Center agency is not the same as a Google Ads agency. Some agencies do both, but the skills are different. Ads management is about bids, budgets and campaign structure; Merchant Center is about product data quality and policy compliance. Good campaigns can’t make up for a weak feed.
Avafa works on the data side and does not manage ad spend. If you need campaign management, that is a separate decision and a separate supplier or team.
What can you check yourself before hiring anyone?
You can learn a lot in an hour with these checks, and the answers also tell you what to ask an agency.
| What to check | Why it matters | What good looks like | Common mistake |
|---|---|---|---|
| Open product issues | Each one removes products from Google | Few issues, each with a known cause | Hundreds of issues nobody has grouped |
| Price and stock on the page vs. Merchant Center | Mismatches cause disapprovals and bad shopper experience | Same values on a sample of products | Checking only the top sellers |
| Product titles | They are what shoppers read | Brand, product type and key attributes in a consistent order | Titles copied from the website heading |
| Identifiers | Brand and GTIN help Google understand the product | Present where they exist, honestly empty where they don’t | Made-up or repeated values to clear a warning |
| Feed refresh | Old data means wrong prices on Google | A known schedule that fits how often your prices and stock change | Nobody knows when the feed last ran |
| Who has access | Continuity if a person or supplier leaves | Account in your name, others added as users | Account created under a supplier’s login |
What does it look like in a hypothetical store?
This example is illustrative, not a real client. Imagine a store with a few thousand SKUs on a common platform. It sells through Google Shopping and free listings, but a large share of the catalog sits under «limited» because titles are short and several attributes are empty.
The review finds that the platform’s app sends the website heading as the title and has no mapping for color or material, which exist in the product database. The fix is not a new feed tool. It is a mapping change and a title rule per category, tested on one category before it goes to all of them.
Then the team adds custom labels for margin tiers and sets a weekly check of the diagnostics. The work is small, it is ordered, and every step can be explained to the store owner.
Signs you need a Merchant Center agency
- Products keep getting disapproved and you don’t know why.
- Your account shows policy issues you cannot trace to a cause.
- Prices or stock on Google don’t match your store.
- You are starting to sell in the United States, or adding a new country or language.
- Your Shopping campaigns spend, but the same few products get all the impressions.
- You changed platform or theme and products disappeared.
- The holiday season is close and nobody owns the feed. Our Black Friday 2026 Merchant Center checklist covers what to review first.
Agency, freelancer or in-house?
A freelancer can fix a specific error. An in-house person knows your catalog best, but rarely sees enough accounts to recognize patterns. An agency makes sense when Google Shopping drives a meaningful share of your revenue, when you have a large catalog or several countries, or when feed problems are costing you sales every day.
| Option | Best for | Main limit |
|---|---|---|
| Freelancer | A defined fix or a one-time setup | Availability and continuity |
| In-house | Deep product knowledge and fast changes | Limited exposure to patterns across stores |
| Agency | Large catalogs, several countries, ongoing monitoring | Needs clear access, ownership and reporting rules |
When does an agency not make sense?
If you have a small catalog, few issues and someone on your team who is comfortable with the feed, an agency adds cost without much gain. The same goes for a store that does not yet have stable product data: fixing the source systems comes first, and a feed specialist cannot do that for you.
What should you ask before hiring?
- Who will own the Merchant Center account? It should stay in your name, with the agency added as a user.
- How will the feed be generated and kept up to date?
- What is the process when products get policy issues?
- What do you check every month, and how do you report it?
- Have you worked with my ecommerce platform?
- Where do you fix the data: in the feed, or at the source?
How does Avafa work?
Avafa is a Google Merchant Center agency for ecommerce stores, a consultancy based in Spain working remotely in English and Spanish. We start with an account audit, fix what blocks your products, then optimize and monitor the feed. Stores in Florida can see how we approach their market on our Google Merchant Center agency in Florida page.
Product data that is clean for Google is also the base for other channels. See how one product feed can serve every AI channel, how Google, Microsoft and ChatGPT shopping compare and what product data AI shopping agents read. Our ecommerce SEO agency page covers the search side of the same catalog.
If you run a PrestaShop store, our guides to connecting PrestaShop with Google Merchant Center and creating a product feed from PrestaShop cover the first steps.
FAQs
Is Google Merchant Center free?
Yes. The Merchant Center account and free product listings have no cost. You only pay if you run Shopping or Performance Max campaigns in Google Ads.
How long does it take to fix a disapproved product?
It depends on the cause. Once the data is corrected, Google reviews the product again, which usually takes a few business days.
Do I need an agency if my store runs on Shopify?
Shopify’s Google app connects your store to Merchant Center, but it doesn’t rewrite titles, fill missing attributes, resolve policy issues or structure products for your campaigns.
Does the agency need to own my Merchant Center account?
No, and it shouldn’t. The account stays in your name and the agency works as an added user, so you keep control if you ever change supplier.
Is a Merchant Center agency the same as a Google Ads agency?
No. One handles product data and policy compliance, the other handles bids, budgets and campaigns. Some firms offer both, but you should ask who does which work.
Does fixing the feed help beyond Google?
Clean titles, attributes and identifiers are useful on other channels too, because many of them read the same product data. How much carries over depends on each channel’s requirements.
