How to Set Up Remarketing in Google Analytics

Most people who visit your website for the first time aren’t ready to make a purchase or sign up. Retargeting is your strategy for bringing those interested visitors back when they are ready to convert. This guide will walk you through setting up remarketing step-by-step using Google Analytics 4 and Google Ads.

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What is Remarketing (and Why Does It Matter)?

Remarketing, often called retargeting, is the practice of showing targeted ads to people who have already visited your website or used your app. If a visitor browses a few product pages, adds an item to their cart, or reads a blog post and then leaves, remarketing allows you to reconnect with them later as they browse other websites, watch YouTube videos, or use social media.

Think of it as a helpful follow-up from a store clerk. You walked in, looked around, showed interest in a specific product, but left without buying. A few days later, you see an ad for that exact product. It’s a gentle reminder that keeps your brand top-of-mind and encourages those "warm" prospects to come back and finish what they started.

This is so powerful because you're focusing your ad budget on a pre-qualified audience. These aren’t strangers, they've already demonstrated an interest in what you offer, making them significantly more likely to convert than a cold audience. The result is often a higher return on investment (ROI), increased conversions, and stronger brand recall.

Before You Start: Prerequisites for Remarketing

Before you can build your first audience, you need to ensure your accounts are set up correctly. Here's a quick checklist of what you'll need to have in place.

• A Google Analytics 4 Property: You must have GA4 installed on your website and actively collecting data.
• A Google Ads Account: You need an active Google Ads account to run your advertising campaigns.
• Correct Admin Permissions: You must have Editor (or greater) permissions on your Google Analytics property and Admin access on your Google Ads account to link them.
• Linked Google Ads and GA4 Accounts: This is a crucial step. Your two accounts need to be able to share data with each other.
• Google Signals Enabled: To get the most out of remarketing, especially for users across different devices, you need to enable this in GA4.

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How to Link Your Google Ads and GA4 Accounts

If you haven't linked your accounts yet, it's a quick process. If they're already linked, feel free to skip to the next section.

1. In your GA4 property, go to Admin (the gear icon in the bottom-left).
2. In the Property column, look under Product links and click on Google Ads Links.
3. Click the blue Link button in the top right.
4. Click Choose Google Ads accounts and select the account you want to link. Click Confirm.
5. Click Next, then enable Personalized Advertising and make sure auto-tagging is enabled. This is what allows the data to sync properly.
6. Click Next one more time, review your settings, and click Submit.

Step-by-Step Guide: Enabling Remarketing in Google Analytics

Once your accounts are linked, you're ready to get everything configured for remarketing. This involves enabling the right data collection settings and then building the audiences you'll target.

Step 1: Enable Google Signals

Google Signals collects data from users who are signed into their Google accounts and have turned on Ads Personalization. Enabling it supercharges your remarketing lists by helping you understand user behavior across different browsers and devices.

1. In GA4, navigate back to the Admin panel.
2. Under the Property column, click on Data Settings > Data Collection.
3. You'll see a section for Google Signals Data Collection. Click the Get started button if it's your first time or just toggle it on.
4. Follow the prompts to activate it. You’ll just need to click through a confirmation screen regarding data privacy policies.

With this activated, Google Analytics can create more comprehensive remarketing audiences that aren’t fragmented by users switching from their phone to their laptop.

Step 2: Create Your First Remarketing Audience

Now for the fun part: defining who you want to target. In GA4, remarketing lists are called "Audiences." You can create them based on nearly any action a user takes on your site.

Let's start with a simple one and then move to a more advanced example.

Example 1: Target All Website Visitors

This is the most basic remarketing audience - a bucket containing everyone who has visited your site recently.

1. Go to your Admin panel, and under the Property column, click on Audiences.
2. Click the blue New audience button.
3. GA4 provides some helpful suggestions. The "All users" template is perfect for this. Or, you can click Create a custom audience.
4. Give your audience a descriptive name, like "All Visitors - Last 30 Days."
5. Keep the condition simple: include users when event is session_start. This effectively targets anyone who started a session on your site.
6. Set the Membership duration. This is how long a person stays in your audience after their last visit. 30 days is a standard starting point. A shorter duration is good for quick sales cycles, while a longer one (up to 540 days) is better for high-ticket items.
7. Click Save.

That's it! Your audience will start populating with users who visit your site from this point forward. Note: It can take 24-48 hours for audiences to appear and populate in your Google Ads account.

Example 2: Target Cart Abandoners (for Ecommerce)

This is one of the highest-value audiences you can build. It targets users who started the checkout process but didn’t complete a purchase.

1. Go to Admin > Audiences and click New audience.
2. Click Create a custom audience.
3. Name your audience something like "Cart Abandoners - Last 14 Days."
4. Under Include user when, set the following condition:
5. Now, we need to exclude people who actually bought something. Click Add group to exclude.
6. Set the exclusion condition so that it will:
7. We recommend setting a short Membership duration, like 7 or 14 days, to re-engage them while the purchase is still fresh in their minds.
8. Click Save.

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Activating Your Audiences in Google Ads

Once your audiences have been created in GA4, they will be automatically imported into your linked Google Ads account, ready to be used in your campaigns.

1. Find Your GA4 Audiences in Google Ads

You can see all of your available audiences in the Audience Manager.

• In Google Ads, click on Tools and Settings (the wrench icon) in the top nav bar.
• Under Shared Library, click on Audience manager.
• You should see the GA4 audiences you created here, like "All Visitors - 30 Days" and "Cart Abandoners - 14 Days." The source will be listed as "Google Analytics 4."

Keep in mind that your audience lists must have at least 1,000 users before they can be used for showing ads on the Google Search Network and at least 100 for a Display Network campaign.

2. Add an Audience to a New or Existing Campaign

The final step is to tell Google Ads which campaigns should target these specific groups of people.

1. Go to the campaign or ad group where you want to apply your remarketing audience.
2. Click on the Audiences tab in the left-hand navigation.
3. Click the pencil icon to Edit audiences.
4. When prompted, choose "Add to Ad Group" (or "Campaign," depending on your structure).
5. You'll see a panel for selecting an audience. Click on the Browse tab.
6. Select How they have interacted with your business (Website and app visitors).
7. You'll see your GA4 audiences listed here. Select the one you want to target (e.g., "Cart Abandoners").
8. Under Targeting Settings, choose Targeting. This instructs Google Ads to only show ads to people in this specific audience. The "Observation" setting, on the other hand, just collects data without restricting your ad delivery.
9. Click Save.

Your campaign will now show its ads exclusively to people who abandoned their shopping carts, giving you a powerful way to win back lost sales.

Pro Tips for Effective Remarketing Campaigns

Just setting up the audiences is only half the battle. To really succeed, follow these best practices.

1. Get Really Specific with Your Audiences

Don’t stop at "All Visitors." Create highly segmented audiences based on behavior:

• Visitors who landed on specific product pages or categories.
• Users who have viewed your pricing page.
• People who watched a certain percentage of an embedded video.
• Visitors who have spent more than 3 minutes on your site.

2. Always Exclude Converters

This is crucial. You don't want to waste money showing "Sign Up Now!" ads to someone who already signed up. Create an audience of "Purchasers" or "Leads" and add them to the Exclusions section of your campaign's audiences. This saves money and prevents you from annoying your best customers.

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3. Tailor Your Ad Creative

Your ads should be relevant to the list they're being shown to. If you are targeting cart abandoners from your shoe section, your remarketing ad should show shoes, not hats.

Ads targeting visitors who read blogs may promote a webinar, while ads for people who abandoned a free trial could offer a 20% discount to come back and complete registration.

4. Use Frequency Capping

No one likes being stalked around the internet by the same ad over and over again. In your Google Ads campaign settings, use frequency capping to limit how many times a single person can see your ad per day or week. A good starting point is 3-5 impressions per user per day. This prevents ad burnout and keeps your brand perception positive.

Final Thoughts

Setting up remarketing in Google Analytics is one of the most effective ways to maximize your advertising budget and reconnect with potential customers. By linking your GA4 and Google Ads accounts, enabling Google Signals, and building targeted audiences based on user behavior, you can create campaigns that bring visitors back to your site to convert.

Once your campaigns are running, the analysis begins, but cross-referencing performance data between Google Ads and Google Analytics can feel like a time-consuming manual task. We built Graphed to solve this headache. Instead of building reports in a spreadsheet, you can connect your accounts and ask simple questions like, "Compare my remarketing audience's conversion rate to new users this month" or "Show me a dashboard of ad spend vs. revenue for my top campaigns." It builds the report or dashboard you need in seconds, freeing you up to focus on strategy instead of report-building.