Google Ads conversion tracking does more than report results. It tells Google which outcomes matter, shapes the data shown in your reports, and, when automated bidding is used, influences how bids are set in every auction.
This makes the distinction between primary and secondary conversion actions strategically important.
A primary conversion action is generally an outcome that you want Google Ads to use for bidding and include in the main Conversions column. A secondary conversion action is normally retained for observation in All conversions, without directly steering standard campaign bidding.
The distinction sounds simple, but there is an important qualification: the primary or secondary setting does not work in isolation. Whether an action is used for optimisation also depends on the conversion goal selected by the campaign. Custom goals can even use secondary actions for bidding.
The correct setup therefore requires three decisions:
Which business outcomes should be measured?
Which actions should appear in the main Conversions column?
Which actions should Google’s bidding system optimise towards for each campaign?
Getting these decisions right helps Google optimise towards commercially meaningful outcomes. Getting them wrong can cause campaigns to chase easy but low-value actions, inflate reported performance or learn from duplicated conversions.
This guide explains how primary and secondary conversions work, how they interact with campaign goals, and how to structure them for ecommerce, lead generation, telephone calls and CRM-based offline conversion tracking.
What Is a Conversion Action in Google Ads?
A conversion action is a specific event that Google Ads records after someone interacts with an advert. Examples include:
An online purchase
A completed enquiry form
A booked appointment
A telephone call from an advert
A telephone call from the website
A newsletter registration
A qualified lead recorded in a CRM
A sales opportunity
A closed customer or signed contract
Revenue imported after a sale
Google organises individual conversion actions into broader conversion goal categories, such as Purchase, Submit Lead Form, Phone Call Lead, Book Appointment or Qualified Lead.
For example, a service business might have several actions within its lead-related goals:
Website enquiry form
Google-hosted lead form
Calls from adverts
Calls from the website
Qualified Lead imported from the CRM
Closed Sale imported from the CRM
Each action can be measured separately, assigned a value and configured as primary or secondary. Campaigns can then use account-default goals or campaign-specific goals to determine which of these outcomes should influence optimisation.
If the underlying tracking is not yet reliable, begin with a full Google Ads conversion-tracking audit before changing bidding goals. A cleaner goal structure cannot compensate for missing events, duplicated tags or inaccurate values.
What Is a Primary Conversion Action?
A primary conversion action is an event intended for bidding and prominent reporting when the campaign uses the goal containing that action.
Under a standard goal configuration, primary actions:
Appear in the Conversions column
Contribute to metrics such as cost per conversion and conversion rate
Can be used by conversion-based Smart Bidding
Also appear in All conversions
Influence how campaign performance is interpreted
Typical primary actions include:
Ecommerce purchases with transaction values
Completed lead forms
Genuine sales calls that meet a useful duration threshold
Confirmed bookings
Qualified Leads imported from a CRM
Sales Opportunities or Closed Sales when there is sufficient data
Primary does not simply mean “important to the business”. It means the action is eligible to become an optimisation target when its associated goal is selected by the campaign.
This distinction matters because a business may consider newsletter subscriptions, brochure downloads and visits to a pricing page useful. However, if those events are substantially easier to generate than a sale or qualified enquiry, making them primary can teach the bidding system to pursue engagement rather than commercial results.
Primary Conversions and Smart Bidding
Conversion-based bidding strategies use the eligible actions selected for the campaign. These strategies include:
Maximise Conversions
Maximise Conversions with a target CPA
Maximise Conversion Value
Maximise Conversion Value with a target ROAS
If several primary actions are included in the selected goals, Google can optimise across all of them. With Maximise Conversions or target CPA, an action counted as one conversion may be treated similarly to another unless values or separate campaign goals provide better commercial context.
For example, suppose a campaign records:
Website form submission
Ten-second telephone call
Qualified Lead
Closed Sale
If every action is primary and included in bidding, the campaign may find that short calls and basic form completions are easier to generate than qualified prospects or customers. The headline conversion count can rise while sales performance deteriorates.
The answer is not automatically to optimise only for the deepest stage. The deepest event must also be defined consistently, imported promptly and generated at sufficient volume. The best bidding signal is usually the deepest reliable outcome with enough recent data for the campaign to learn from.
Our guide to Google Ads bidding strategies explains how goal selection, volume and value interact with automated optimisation.
What Is a Secondary Conversion Action?
A secondary conversion action is normally an observation-only event. It is measured and available for analysis but is not included in the main Conversions column or used by standard goal-based bidding.
Secondary actions generally:
Appear in the All conversions column
Remain available for segmentation and reporting
Do not normally affect conversion-based bidding
Help preserve useful diagnostic or customer-journey data
Can be promoted to primary later when the tracking and strategy are ready
Suitable secondary actions may include:
Newsletter sign-ups
Brochure or guide downloads
Visits to an important page
Clicks on an email address
Click-to-call interactions that do not confirm a connected call
Live-chat starts
Low-intent account registrations
Early CRM stages that are not suitable bidding outcomes
Duplicate or backup measurement used for validation
Secondary does not mean unimportant. It means the event is useful for measurement but should not normally control budget allocation.
For example, a PDF download may help explain the customer journey and support a remarketing audience. It is still a weaker business outcome than a completed consultation request. Recording the download as secondary preserves the insight without encouraging Google to maximise downloads at the expense of genuine enquiries.
The Custom-Goal Exception
There is a critical exception to the usual rule: when a secondary conversion action is included in a custom goal selected by a campaign, Google can use it for bidding and include it in conversion reporting for that campaign.
Therefore, changing an action from primary to secondary does not guarantee that it has been removed from every campaign’s optimisation. You must also inspect:
Account-default goals
Campaign-specific goal settings
Custom goals
Portfolio bid strategies, where relevant
The actual conversion actions included in each campaign’s Conversions column
Google’s own primary and secondary conversion-action guidance confirms that custom goals can use included actions regardless of their primary or secondary status.
Primary vs Secondary Conversions at a Glance
| Feature | Primary conversion action | Secondary conversion action |
|---|---|---|
| Standard reporting | Included in Conversions when its goal is used | Normally excluded from Conversions |
| All conversions | Included | Included |
| Smart Bidding | Eligible when the associated goal is selected | Normally observation only |
| Custom-goal exception | Can be used | Can also be used if included in the selected custom goal |
| Typical purpose | Core business or optimisation outcome | Supporting, diagnostic or micro-conversion |
| Example | Purchase, qualified lead or completed booking | Brochure download, page visit or chat start |
The most important operational point is that action status and campaign goal selection must be reviewed together.
Conversion Actions, Goals and Campaign Settings
Many configuration errors occur because conversion actions and conversion goals are treated as the same thing.
A conversion action is the individual event being measured.
A conversion goal groups one or more actions around an outcome category.
A campaign’s goal settings determine which goals it uses for bidding and reporting.
A campaign can use account-default goals or campaign-specific goals. Account-default goals provide consistency, but they are not appropriate when different campaigns have genuinely different objectives.
For example:
An ecommerce campaign may optimise for Purchase.
A quotation campaign may optimise for Submit Lead Form or Qualified Lead.
A telephone-led campaign may optimise for Phone Call Lead.
A brand-awareness campaign may use a non-conversion bidding strategy while retaining engagement events for observation.
Campaign-specific goals are useful when they reflect a real strategic difference. They should not be used casually, because excessive variation makes reporting harder and fragments the data available to automated bidding.
Account-Default Goals
Account-default goals help apply a common definition of success across campaigns. When a new campaign is created, it will normally inherit the account-default goal selection.
This is useful when most campaigns pursue the same commercial outcome. However, it can also spread a configuration error across the account. If an easy micro-conversion is accidentally included as a primary action within a default goal, multiple campaigns may begin optimising towards it.
Campaign-Specific Goals
Campaign-specific goals override the account default for an individual campaign. They are appropriate when campaign objectives differ meaningfully.
Examples include:
Separating ecommerce purchases from lead-generation enquiries
Optimising a dedicated call campaign towards connected calls
Testing a Qualified Lead goal before applying it more widely
Using separate goals for different service lines with distinct sales processes
Before applying an override, check whether the difference genuinely requires another goal or whether clearer campaign structure and reporting would solve the problem.
Custom Goals
Custom goals allow selected actions from different goal categories to be combined. They offer flexibility but require careful control.
Because a custom goal can use both primary and secondary actions for bidding, it can override the assumption that secondary actions are observation only. Custom goals should therefore be documented and audited at campaign level.
How to Choose Primary Conversions
A good primary action should meet four tests.
1. It Represents Genuine Business Value
The action should correspond to an outcome the business actually wants more of. Purchases, confirmed bookings, qualified enquiries and sales opportunities usually have clearer commercial relevance than page views or button clicks.
2. It Is Tracked Accurately
The action should fire once, at the correct moment, with the correct value and transaction or event identifier where applicable. A duplicated purchase tag or a form event that fires on button click rather than successful submission can corrupt both reporting and bidding.
3. It Is Defined Consistently
For offline stages, sales teams need a shared definition. If one person marks any responsive contact as Qualified while another only qualifies prospects with budget, authority and need, the imported signal becomes unreliable.
4. It Has Enough Timely Data
The most commercially valuable event may occur too infrequently or too late to become the campaign’s only optimisation signal. A Closed Sale may be ideal in theory, but a campaign generating two sales per month after a 90-day sales cycle gives Google less timely feedback than a consistently defined Sales Opportunity generated several times per week.
The objective is not to choose the shallowest or deepest event. It is to choose the strongest signal the available data can support.
Recommended Structures for Different Business Models
There is no universal list of primary and secondary actions. The correct structure depends on how the business generates revenue.
Ecommerce
For most ecommerce campaigns, the completed purchase should be the principal primary conversion. It should pass the actual transaction value and a unique transaction ID.
Typical structure:
Primary: Purchase
Secondary: Add to basket, begin checkout, newsletter registration, product-page engagement
Add to basket and begin checkout are valuable diagnostic events, but using them alongside purchases as equal primary outcomes can distort bidding. If purchase volume is temporarily too low, a shallower event may support a controlled test, but it should not be confused with revenue.
Value-based bidding is generally more suitable once purchase values are accurate and there is sufficient data. See our guide to Maximise Conversion Value and target ROAS for the bidding implications.
Lead-Generation Businesses
Lead generation is more complex because the initial enquiry is not the final commercial outcome.
A developing measurement structure may look like this:
Primary initially: Valid website form and meaningful telephone call
Secondary: Newsletter, brochure download, chat start and other micro-conversions
Primary when validated: Qualified Lead or Sales Opportunity from the CRM
Secondary or retained for visibility: Original lead action after the bidding strategy moves deeper
Later value signal: Closed Sale and revenue
It is often sensible to begin with high-quality website enquiries while the CRM integration is being tested. Once the business can return reliable later-stage outcomes at adequate volume, campaigns can be moved towards Qualified Leads, Sales Opportunities, customers or value.
This staged approach is safer than suddenly removing the only high-volume signal or making every CRM stage primary at once.
Our Google Ads CRM integration guide explains the implementation routes, while CRM tracking for Google Ads covers the measurement strategy.
Telephone-Led Businesses
Calls require particular care because several actions can describe the same interaction:
Click on a telephone number
Call from a call asset or call advert
Call to a Google forwarding number on the website
Call recorded by a CRM or third-party telephone system
Qualified call or customer outcome imported later
A click-to-call event only confirms that the user pressed a button. It does not prove that the call connected or had commercial value. It is often better treated as secondary when connected-call tracking is available.
For primary optimisation, use a meaningful call action with an appropriate duration threshold or, preferably, a later qualified outcome when the CRM and call system can supply it reliably. Avoid counting the same call through multiple sources as separate primary conversions.
Our guide to tracking telephone calls from Google Ads explains the differences between Google’s call reporting and CRM or third-party call tracking.
Using Offline Conversion Tracking with Primary and Secondary Actions
Standard website tracking records the initial online action. Offline conversion tracking returns later outcomes from a CRM, booking platform, sales system or other data source.
Despite the name, the later event does not have to happen physically offline. A lead can submit a website form, attend an online appointment, sign electronically and pay online. If a later lifecycle event is imported from another system, it forms part of offline conversion measurement.
A typical service-business journey is:
Google Ads click → Website enquiry → Qualified Lead → Sales Opportunity → Closed Sale → Revenue
The initial enquiry and the later CRM stages should not all be made primary without considering volume, delay and duplication.
A practical progression is:
Measure the initial enquiry accurately.
Import later CRM outcomes as secondary while testing data quality.
Compare imported volumes against the CRM.
Confirm that timestamps, values and identifiers are correct.
Promote the most useful deeper-stage action when it is stable enough for bidding.
Monitor conversion delay and campaign learning after the change.
Google now recommends Enhanced Conversions for Leads for new lead-focused offline measurement implementations. It uses hashed first-party customer data alongside available advertising identifiers to improve matching and measurement durability.
The setup may combine:
The Google tag or Google Tag Manager
Auto-tagging and click identifiers such as GCLID, GBRAID and WBRAID
User-provided data collected with appropriate consent
CRM fields for attribution and lifecycle stages
Google Ads Data Manager, a native CRM connection, an approved integration or the Google Ads API
Consistent conversion names, timestamps, values and currencies
The goal is not to import every status in the CRM. A small number of well-defined events usually provides a cleaner optimisation signal than a long sequence of overlapping stages.
Conversion Values and Value-Based Bidding
Primary and secondary settings answer whether an event should normally influence bidding. Conversion values answer how much the event is worth.
These are different decisions.
For ecommerce, the purchase value should normally be the real transaction revenue, adjusted consistently for tax, delivery, refunds or other business rules where required.
For lead generation, values can be based on expected commercial value. For example:
Expected lead value = lead-to-sale rate × average gross sales value
If 10% of Qualified Leads become customers and the average gross value is £2,000, the expected value of a Qualified Lead is £200 before any margin or lifetime-value adjustment.
Values should reflect genuine differences in expected business outcome. Assigning an arbitrary value merely to make one event appear more important can mislead Maximise Conversion Value and target ROAS bidding.
Where accurate revenue is available, importing the final sale value is usually stronger than relying permanently on fixed proxy values. Our guide to value-based bidding for Google Ads explores this transition in more detail.
Common Primary and Secondary Conversion Mistakes
Making Every Measured Action Primary
This is one of the most common account problems. Page views, form starts, clicks, downloads, calls and completed leads may all be counted together, making the Conversions column look healthy while concealing the real business result.
Treating Every Lead as Equally Valuable
Automated bidding will learn from the outcome it receives. If spam, job applications, supplier enquiries and genuine prospects all trigger the same primary action, Google receives no reliable distinction between them.
Improved form validation, lead qualification and offline conversion tracking can provide a better signal.
Counting One Outcome More Than Once
Duplicate measurement can occur when the same form or purchase is imported from Google Analytics and recorded directly by the Google Ads tag, or when a phone call is counted by several systems.
Keep a preferred source as primary. Retain a second implementation as secondary only when it has a clear validation purpose, and reconcile the difference.
Using Button Clicks as Completed Leads
A submit-button click does not prove that a form passed validation or reached the CRM. The event should fire only after a successful submission or confirmed conversion state.
Moving to a Deep Offline Goal Too Early
A Closed Sale is commercially meaningful, but it may be too rare or delayed to support stable bidding. Test deeper events as secondary first, then use the deepest reliable stage with adequate volume.
Assuming Secondary Always Means “Not Used for Bidding”
This overlooks custom goals. A secondary action included in a selected custom goal can influence bidding. Always inspect the campaign’s actual goal configuration.
Ignoring Conversion Counting Settings
Google Ads can count one or every conversion after an advert interaction, depending on the action configuration. “Every” is commonly appropriate for purchases because one user can place several orders. “One” is often more appropriate for lead submissions when repeated actions from the same advert interaction should not inflate lead volume.
Changing Goals Without Allowing for Learning and Delay
Changing the optimisation event changes the data supplied to the bidding system. Performance should be monitored over an appropriate period that accounts for conversion lag, sales-cycle length and the bid strategy’s adjustment period.
How to Audit Primary and Secondary Conversions
Use the following process for each Google Ads account.
1. Inventory Every Conversion Action
Record the action name, source, goal category, primary or secondary setting, value method, counting method, attribution configuration and current status.
2. Map Each Action to a Business Outcome
Classify actions as:
Revenue outcome
Customer or sale
Qualified pipeline event
Initial lead
Micro-conversion
Diagnostic or duplicate tracking
If the business cannot explain what an action represents, it should not control bidding.
3. Check the Tracking Source
Identify whether the action comes from:
Google Ads website tracking
Google Analytics import
Google call reporting
App tracking
CRM or offline import
Google Ads Data Manager
Another integration
Look for two actions measuring the same event.
4. Inspect Goal Selection by Campaign
Check whether each campaign uses account-default goals, campaign-specific goals or a custom goal. Do not infer bidding behaviour from the action’s primary or secondary label alone.
5. Validate Counts and Values
Compare Google Ads with the website, ecommerce platform, call system and CRM. Exact equality is not always expected because attribution rules and reporting times differ, but unexplained gaps require investigation.
6. Review Volume and Conversion Delay
Measure how many eligible conversions each campaign generates and how long they take to appear. A reliable signal that arrives promptly is usually more useful than a theoretically perfect event that is rare, inconsistently recorded or delayed for months.
7. Introduce Changes Gradually
Where possible, observe a new event as secondary first. Validate it, then change bidding goals deliberately. Record the date and avoid making several unrelated structural changes at the same time.
For a broader account review, use our Google Ads audit checklist.
Reporting on Primary and Secondary Conversions
The Conversions column should provide a focused view of the actions currently treated as central to campaign performance. All conversions provides a broader view that includes secondary actions and certain additional conversion types.
Useful reporting practices include:
Segmenting results by conversion action
Adding both Conversions and All conversions to diagnostic reports
Reviewing conversion value as well as volume
Comparing initial leads with Qualified Leads, opportunities and customers
Monitoring lead-to-qualified and lead-to-sale rates by campaign
Reviewing cost per Qualified Lead, cost per customer and ROAS
Separating website, call and imported CRM outcomes
Do not rely only on the account-level total. Two campaigns can report the same number of conversions while producing very different mixtures of calls, forms, qualified opportunities and sales.
Frequently Asked Questions
Do Secondary Conversions Affect Smart Bidding?
Normally, secondary conversion actions are observation only and do not affect standard goal-based bidding. However, a secondary action can be used for bidding when it is included in a custom goal selected by the campaign.
Do Secondary Conversions Appear in the Conversions Column?
They normally appear in All conversions rather than Conversions. The custom-goal exception can change their treatment for a campaign.
Should Form Submissions Be Primary Conversions?
For many lead-generation campaigns, valid form submissions are the best starting primary action. As reliable CRM data becomes available, the business may optimise towards a deeper event such as a Qualified Lead or Sales Opportunity. The decision depends on data quality, volume and conversion delay.
Should Qualified Leads Be Primary or Secondary?
Use Qualified Leads as secondary while the definition and import are being validated. They can become primary when they are consistent, timely and frequent enough to support optimisation.
Can Purchases and Add-to-Basket Events Both Be Primary?
They can, but this is rarely desirable for a mature ecommerce campaign. Add to basket is an easier, lower-value action and can distract bidding from completed purchases. It is usually better retained as secondary.
Should Google Analytics Conversions or Google Ads Tag Conversions Be Primary?
When the same action is available from both sources, choose one trusted implementation as the primary source to avoid duplication. For Google Ads optimisation, direct Google Ads tracking is often preferred when it is implemented accurately. The alternative can remain secondary temporarily for comparison.
Is a Primary Conversion Automatically Used by Every Campaign?
No. The campaign must use the goal that contains the action. Campaign-specific settings and custom goals can produce different behaviour across campaigns.
How Many Primary Conversion Actions Should a Campaign Have?
There is no fixed number. Use the smallest set that accurately represents the campaign’s genuine objectives. One clean purchase action may be enough for ecommerce. A lead-generation campaign may reasonably use validated forms and meaningful calls, or a deeper CRM event when data permits.
Conclusion
Primary and secondary conversions define more than the layout of a Google Ads report. They help determine which outcomes influence Smart Bidding and, therefore, what the platform attempts to generate with the available budget.
Primary actions should represent the strongest reliable outcomes the campaign can support. Secondary actions should preserve useful journey, diagnostic and testing data without competing with the main objective.
The correct setup requires the conversion action, goal category and campaign goal selection to be reviewed together. It should also account for tracking accuracy, duplication, conversion volume, sales-cycle delay and commercial value.
For ecommerce, this usually means optimising towards purchases and revenue. For lead generation, it often means progressing from valid enquiries towards Qualified Leads, Sales Opportunities, customers and imported revenue as the CRM data matures.
The aim is not to maximise the number shown in the Conversions column. It is to give Google Ads a clean, accurate definition of business success—and then measure whether advertising is producing profitable growth.
If you need help reviewing conversion goals, removing duplicated actions or connecting Google Ads with your CRM and sales pipeline, contact One PPC for a conversion-tracking and campaign audit.