Article
23 Mar 2026
How to Set Up Google Merchant Center: A Step-by-Step Guide for Ecommerce Stores
A complete walkthrough for setting up Google Merchant Center correctly — feed configuration, shipping, product approvals, and linking to Google Ads.
How to Set Up Google Merchant Center: A Step-by-Step Guide for Ecommerce Stores
Google Merchant Center is where your product data lives. Without a correctly configured Merchant Center account, your products can't appear in Google Shopping results or Google Shopping campaigns. Get the setup wrong and you'll deal with disapprovals, limited impressions, and poor campaign performance. Get it right from the start and you have a clean foundation to build on.
This guide walks through the complete Merchant Center setup process for ecommerce stores — including the steps most tutorials skip.
What Is Google Merchant Center?
Google Merchant Center (GMC) is a platform where you upload your product catalogue — titles, descriptions, images, prices, availability, and other attributes — so that Google can use it to display your products in:
Google Shopping (the "Shopping" tab in search results)
Google Shopping ads (the product carousel that appears at the top of search results)
Google Search (product listings embedded in standard search results)
Google Images (shoppable images)
YouTube Shopping (product displays in YouTube ads)
Your Merchant Center feed is also the foundation of Performance Max and Standard Shopping campaigns in Google Ads. The quality of your feed directly determines how well your campaigns perform.
Before You Start: What You Need
A Google account (ideally a business Gmail, not a personal account)
Your store URL
Access to your website's code or CMS (to add a verification tag)
Your product catalogue ready (or a feed source from your ecommerce platform)
A Google Ads account (to link later — you can set this up afterward)
Step 1: Create Your Merchant Center Account
Go to merchants.google.com and click "Get started."
Choose Merchant Center Next (the current version as of 2025–2026). If you see an option for the legacy interface, select the newer version.
Enter your business information:
Business name: Your store or brand name
Country: New Zealand (or Australia if you're an AU-based store)
Time zone: Your local time zone
Click "Continue."
Step 2: Verify and Claim Your Website
Google needs to confirm you own the domain. There are four verification methods:
Recommended: HTML tag Copy the provided meta tag and paste it into the <head> section of your site's HTML.
For Shopify:
In your Shopify admin, go to Online Store → Themes → Actions → Edit code
Open
theme.liquidPaste the Google verification meta tag just below the opening
<head>tagSave and click "Verify" in Merchant Center
Other verification options: Google Tag Manager, Google Analytics (if already installed), or uploading an HTML file to your server root.
After verification, click "Claim website." Claiming asserts that no other Merchant Center account is using this domain.
Step 3: Add Business and Shipping Information
Business Details
Go to Business → Business info and complete:
Store name (what appears on your Shopping listings)
Customer service email and phone number
Returns and refund policy URL (required)
Shipping Settings
This is critical and often incomplete. Google needs your shipping configuration to calculate accurate shipping costs in Shopping listings.
Go to Business → Shipping and returns and create a shipping service:
Service name: e.g. "NZ Standard Shipping"
Countries: Select New Zealand (or Australia, or both)
Delivery time: Your typical dispatch + transit time
Pricing: Free, flat rate, or table-based depending on your model
For stores offering free shipping above a threshold:
Create one shipping service for orders below the threshold (with your standard shipping rate)
Create a second shipping service for orders above the threshold (free)
Set the threshold price as the condition for each service
Inaccurate or missing shipping configuration leads to product disapprovals and lower Shopping ad performance.
Returns Policy
Add your returns policy URL and configure the key terms (return window in days, refund type). This information appears in your Shopping listings and builds purchase confidence.
Step 4: Set Up Your Product Feed
Your product feed is the data file that tells Google what products you sell and their attributes. There are three main ways to create a feed for Shopify stores:
Option A: Shopify Google & YouTube App (Recommended)
Install the free "Google & YouTube" app from the Shopify App Store. This creates an automatic feed that syncs your Shopify product catalogue with Merchant Center in real time. Price updates, inventory changes, and new products sync automatically.
After installing:
Connect the app to your Merchant Center account
Select which products or collections to include
Map your Shopify product attributes to Google's required fields
Submit the feed and wait for Google to process it
This is the simplest approach and keeps your feed current without manual updates.
Option B: Google Sheets Feed
Create a Google Sheet formatted according to Google's feed specification and submit it via Merchant Center → Products → Feeds → Add feed → Google Sheets.
You'll need to include all required attributes (see below). This is more work than the Shopify app approach but gives you more control over the exact data in your feed.
Option C: Scheduled Fetch / XML Feed
For larger catalogues or custom setups, you can host a product feed file on your server and have Merchant Center fetch it on a schedule. This requires either a custom feed export from your platform or a third-party feed tool.
Step 5: Required and Recommended Feed Attributes
Google requires certain attributes for products to be eligible to appear in Shopping. Missing required attributes cause product disapprovals.
Required Attributes
Attribute | What It Is | Notes |
|---|---|---|
id | Unique product identifier | Use your SKU or Shopify product variant ID |
title | Product name | The most important attribute for search matching |
description | Product description | Used for keyword matching; be accurate and detailed |
link | Product page URL | Must match the page exactly, including https |
image_link | Main product image URL | Must be a direct link to the image file |
price | Selling price | Include currency code (e.g., 35.00 NZD) |
availability | In stock / out of stock / preorder | Must be accurate and updated in real time |
condition | New / used / refurbished | Most ecommerce stores use "new" |
Highly Recommended Attributes
Attribute | Why It Matters |
|---|---|
gtin | Global Trade Item Number (barcode) — significantly improves Shopping matching for branded products |
brand | Required for most non-custom products |
product_type | Helps Google categorise your products |
google_product_category | Google's own taxonomy — improves placement accuracy |
additional_image_link | Up to 10 additional images |
shipping | Overrides account-level shipping for specific products |
sale_price | The discounted price during a sale; Google shows the strikethrough original price |
size / colour | Required for apparel |
custom_label_0–4 | Custom segmentation labels for campaign organisation |
Step 6: Optimise Your Product Titles
Product titles are the single most important attribute in your feed for search relevance. Google uses the title to match your products to search queries.
Effective title structure for most products: [Brand] + [Product Type] + [Key Attributes (colour, size, material)]
Examples:
"Icebreaker Merino Wool Running Beanie — Black — One Size"
"Apple AirPods Pro (2nd Generation) — USB-C — White"
"Pottery Barn Kids Organic Cotton Fitted Sheet — Queen — Navy"
What to avoid:
Promotional language ("Best", "Amazing", "Sale")
ALLCAPS titles
Irrelevant keywords stuffed in
Vague titles that don't describe the specific product ("Men's Hat")
Step 7: Diagnose and Fix Product Disapprovals
After submitting your feed, Google will process your products and flag any issues. Go to Products → All products to see approval status.
Common disapproval reasons and fixes:
Mismatched price or availability The price or availability in your feed doesn't match what's on the product page. Cause: caching delay, or the Shopify app hasn't synced the latest changes. Fix: ensure your feed is syncing in real time, not just daily.
Missing or invalid GTIN For branded products, Google expects a valid barcode. If you're the manufacturer of a custom product, you can request a GTIN exemption. If you're reselling branded goods, get the GTIN from the manufacturer.
Image quality issues Images with promotional text, watermarks, or less than 100x100 pixels will be disapproved. Use clean product images on neutral backgrounds.
Landing page not accessible If Google's crawler can't access your product page (blocked by robots.txt, login wall, or geo-restriction), the product will be disapproved. Ensure your product pages are publicly accessible.
Step 8: Link Google Merchant Center to Google Ads
To run Shopping campaigns, your Merchant Center account needs to be linked to your Google Ads account.
In Merchant Center:
Go to Settings → Linked accounts
Click "Google Ads"
Enter your Google Ads customer ID (found in the top right of your Google Ads account)
Click "Send link request"
In Google Ads:
Go to Tools → Linked accounts
Find the Merchant Center link request and approve it
Once linked, your product feed is available in Google Ads for Shopping campaigns and Performance Max campaigns.
Step 9: Enable Free Listings
Free Product Listings let your products appear in the Google Shopping tab organically, without paying for ads. This is free visibility and should be enabled from day one.
In Merchant Center, go to Growth → Manage programmes → Free product listings and enable it. Your products will begin appearing in organic Shopping results as Google processes and approves them.
Common Merchant Center Mistakes
Setting and forgetting the feed. Products go out of stock, prices change, and new products are added. If your feed isn't syncing in real time (or at minimum, daily), you'll run ads for out-of-stock products and show incorrect prices — both of which lead to poor performance and disapprovals.
Skipping the shipping configuration. Incomplete shipping information causes product disapprovals and means your listings show "see website for shipping" — which reduces click-through rate.
Generic product titles. "Product 1234" or "Blue Shirt" don't match the way people search. The title is your most important feed attribute — treat it accordingly.
Not linking to Google Ads. You can have a perfect feed but not run ads because you forgot this step. Link before you need it.
A clean, well-structured Merchant Center account is the foundation everything else builds on. Get the feed right, fix disapprovals early, and you'll see better Shopping ad performance and more organic Shopping visibility from day one.
If you want your Merchant Center feed professionally optimised — including GTIN coverage, custom labels for campaign segmentation, and title structure that matches how your customers actually search — our Google Shopping service covers feed management as part of the full setup.