How to Set Up Enhanced Conversions in Google Ads

Enhanced conversions in Google Ads help recover attribution data lost to cookie restrictions, browser privacy changes, and cross-device buyer journeys. By sending hashed first-party customer data alongside your existing conversion tags, Google can match more conversions back to ad interactions and improve bidding accuracy.

For B2B marketers, that matters more than ever. Longer buying cycles, multiple stakeholders, and fragmented research behavior make signal loss a much bigger problem than most teams realize. Here’s how enhanced conversions work, how to set them up, and what to do once they’re live.

What Are Enhanced Conversions in Google Ads?

When someone converts on your site, say a demo form submission, your standard Google Ads tag fires as usual. Enhanced conversions add a second layer. They collect hashed customer data like an email address, phone number, or name and send it securely to Google. Google then matches that data against signed-in users and recovers conversions that would have otherwise gone unattributed.

The cross-device gap is where this earns its place. Loopfield, a fictional B2B SaaS company, runs paid search against high-intent buyers. A prospect clicks an ad on their work laptop, researches for 2 days, then submits a demo request from their phone. Standard tracking often breaks that chain. Enhanced conversions stitch it back together.

The Signal-Loss Problem in B2B

Signal loss has quietly become one of the biggest blind spots in paid media.

Third-party cookie deprecation gets the headlines, but it is only part of the story. B2B buyer behavior is harder to track by nature. Longer sales cycles add touchpoints, senior buyers research in private browsing, corporate devices block tracking by default, and evaluation teams switch between devices constantly. Each one is a conversion your platform may never record.

That gap does not just dent your reporting. It feeds Smart Bidding. Hand the algorithm a partial picture and it optimizes toward the wrong outcomes with full confidence.

That means:

• High-intent keywords can look less efficient than they actually are
• Budget shifts away from the best-performing segments
• CPA rises because Google is optimizing toward partial outcomes

Enhanced conversions are one of the fastest ways to close that gap.

Enhanced Conversions vs. Standard Conversion Tracking

Standard conversion tracking is still required. Enhanced conversions build on top of it.

This is not a replacement. It is a signal enhancement layer.

The Two Types of Enhanced Conversions

Enhanced Conversions for Web

This one is built for ecommerce. It sharpens purchase tracking by pulling customer data straight from checkout or order confirmation pages. If you sell online and your conversions are transactions, this is your setup.

Enhanced Conversions for Leads

This is the version most B2B companies need.

Instead of purchases, it tracks lead actions like:

• Demo requests
• Contact forms
• Consultation bookings
• Whitepaper downloads

Back to Loopfield. A prospect submits a demo form, and on the thank-you page the enhanced conversions tag captures the hashed email and sends it alongside the conversion event. Google uses that signal to strengthen attribution. For demand generation teams, this is where enhanced conversions pay off.

Three Ways to Implement Enhanced Conversions

There are three ways to set this up.

Most B2B teams should start with Google Tag Manager.

It offers flexibility without engineering dependencies.

Option 1: Set Up Enhanced Conversions with Google Tag

If you’re already using gTag directly on your site, setup is relatively simple.

Steps:

1. In Google Ads, navigate to Goals > Conversions
2. Select the conversion action you want to enhance
3. Open Settings
4. Enable Enhanced Conversions
5. Choose Google tag
6. Add your user-provided data variables to the tag

At minimum, email is the strongest identifier. Name and phone can improve match rates.

Google hashes this data using SHA-256 before transmission.

Option 2: Set Up Enhanced Conversions with Google Tag Manager

This is the most common setup for B2B.

It works especially well for demo request flows, gated content, and contact forms.

Step 0: Confirm Your Prerequisites

Before you start:

• Your base conversion tag must already be firing correctly
• Your Google Ads account must accept customer data terms
• Your thank-you page must contain identifiable customer data or pass it through the data layer

If the foundation is broken, enhanced conversions will not fix it.

Step 1: Enable Enhanced Conversions in Google Ads

Go to your conversion action settings and toggle enhanced conversions on.

Choose Google Tag Manager as the implementation method.

Step 2: Create User-Provided Data Variables in GTM

Inside GTM:

• Create variables for email, phone, or name
• Pull them from the data layer, DOM, or form submission event

Email is the highest priority.

Step 3: Update Your Conversion Tag

Edit your Google Ads conversion tag.

Map the user-provided data variables into the enhanced conversions fields.

Step 4: Publish Your Container

Push the GTM changes live.

Step 5: Test in Tag Assistant

Use preview mode to confirm:

• Variables are populating correctly
• Conversion tags are firing
• User-provided data fields are attached

Auto-Detect vs Manual Configuration

Google offers an auto-detect option that scans the page for identifiable fields on its own. It holds up for simple, standard forms. Custom-built B2B forms tend to break it, since the fields rarely sit where Google expects them. For anything past a basic form, manual setup is the more reliable path.

Option 3: Set Up Enhanced Conversions with the Google Ads API

For companies with mature infrastructure, API implementation is the strongest long-term setup.

Instead of sending data client-side, you send hashed lead data server-side.

This creates:

• Better reliability
• Stronger privacy compliance
• Cleaner CRM-to-Google attribution loops

This is especially useful for teams running through platforms like HubSpot or Salesforce.

It requires engineering support, but it is the gold standard.

How to Verify Enhanced Conversions Are Working

Once live, verify the setup.

In Tag Assistant

Check that:

• Your base conversion fires
• User data fields are populated
• No variables return null

In Google Ads

Navigate back to the conversion action.

Enhanced conversions: Recording

This confirms Google is receiving and processing data.

Review Diagnostics

Google Ads will flag the following. Be sure to fix these early:

• Missing fields
• Formatting issues
• Low match rates

Common Setup Errors

Empty User Data Variables: Usually caused by missing data layer values or incorrect GTM mapping. Check variable configuration first.

No Recent Conversions: This often means your base conversion tag is not firing. Enhanced conversions depend on it.

Auto-Detect Fails: Custom forms break Google’s auto-detect frequently. Switch to manual.

What a Healthy Setup Looks Like After 30 Days

Enhanced conversions do not improve performance overnight.

They improve signal quality.

After 2 to 4 weeks, a strong setup usually shows:

• Higher matched conversion volume
• Cleaner attribution paths
• Improved Smart Bidding efficiency
• Lower CPA in competitive campaigns

A 20% to 40% increase in attributed conversions is a strong benchmark. That doesn’t mean performance changed overnight. It means your visibility into performance improved. That distinction matters.

What to Do Once Enhanced Conversions Are Live

This is where most teams stop too early. Going live feels like the finish line, but enhanced conversions are infrastructure, not strategy. Better signal only earns its keep once you act on it. Here is what to do after the tag is firing.

Give Smart Bidding Time to Learn

Don’t judge performance after three days. Wait at least 2 to 4 weeks.

Pair with Offline Conversion Imports

Expand Higher-Funnel Coverage

Better attribution often reveals that early-stage keywords were pulling more weight than your old data showed. Terms you capped or cut may have been feeding conversions you never credited them for. That is room to scale spend you were previously starving.

Better Signal, Better Bidding

Most B2B teams are still running paid search on incomplete conversion data. They’re making budget decisions, judging efficiency, and scaling campaigns based on partial visibility. That creates blind spots, and blind spots create wasted spend.

Enhanced conversions are one of the highest-leverage upgrades you can make to your measurement infrastructure. If your paid media program is optimizing against incomplete data, your growth ceiling is lower than it should be. The teams that win in paid search over the next 12 months will be the ones investing in signal quality now.

Consider partnering with our paid search agency team to turn better signal into sharper bidding.

Google Ads Enhanced Conversions FAQs

What’s the difference between enhanced conversions and offline conversion imports?

They solve different parts of the same problem. Enhanced conversions improve attribution at the point of conversion, recovering the form fills and signups that standard tracking misses. Offline conversion imports work further down the funnel, sending CRM outcomes like MQLs, SQLs, opportunities, and closed-won deals back into Google Ads so bidding can optimize toward revenue instead of raw lead volume. Run both together.

Do enhanced conversions require users to be signed into Google?

Effectively, yes. Matching only works when Google can tie your hashed data back to a signed-in account, so match rates vary with how many of your converters are logged in at the time. You will not recover every conversion, but even partial matching returns signal you would otherwise lose entirely.

Can I use enhanced conversions with GTM and HubSpot?

Yes, and it is one of the most common B2B setups we see. HubSpot forms typically push submission data into the data layer, which gives GTM clean variables to feed into the enhanced conversions tag. The plumbing is straightforward. The real work is mapping the right fields and confirming the hashed data actually fires on submission.

How long does it take to see results?

Plan to evaluate after 30 days. That window gives Smart Bidding enough conversion volume to recalibrate against the recovered data, rather than reacting to a few early data points. Lower-volume accounts may need longer before the signal stabilizes.

Will enhanced conversions increase my reported conversions?

Often, yes, but read that number correctly. The lift comes from recovering conversions you already earned, not from generating new ones. You are closing the gap between what happened and what your account could actually see. Same performance, measured more honestly.