Google Ads

    Primary vs Secondary Conversions in Google Ads: Which Actions Should Bid

    Qudees Kiani, founder · · 10 min read

    Short answer

    A primary conversion action is one Google Ads bids on and counts in the Conversions column. A secondary action is observation only and shows in All conv. Make the business result primary: the purchase for a shop, the qualified lead for lead gen. Keep add to cart, checkout steps, page views and newsletter sign-ups secondary.

    On this page
    Cover: Google called this goal misconfigured. It wasn't.

    A store owner on r/googleads had a Performance Max campaign reporting 480% ROAS for months, against a 150% target, and didn't believe it. Add to cart, begin checkout and add payment info were all set as primary next to Purchase. Their freelancer said every conversion goal needs a primary action, and Google's interface seemed to agree: it labels such goals "Misconfigured". This guide explains what primary and secondary mean, which actions should bid for your kind of business, and why Google's prompts often point the wrong way.

    What primary and secondary mean

    Every conversion action in Google Ads is either primary or secondary. A primary action is counted in the Conversions column and used for bidding by any campaign that bids toward its goal. A secondary action is for observation only: Google records it in the All conv. column and bidding ignores it. Google's help page calls primary actions "biddable" and secondary ones "observation-only".

    There is one exception. If you build a custom goal, Google bids on every action inside it, primary or secondary. Custom goals are the only place a secondary action bids.

    PrimarySecondary
    Counted in the Conversions columnYesNo
    Counted in All conv.YesYes
    Used by Smart BiddingYes, in campaigns that use its goalNo, unless it sits in a custom goal
    Shows up in cost per conversion and ROASYesNo
    Use it forThe result the business is paid forSteps on the way, and anything you want to watch

    One line in Google's Target CPA help page matters more than it looks: Smart Bidding learns across all conversion actions in the Conversions column, even ones set up for other goals and other bid strategies. So a bad primary action can shape what Smart Bidding learns across the whole account, not only in the campaign you had in mind.

    Diagram of how primary conversion actions feed the Conversions column and bidding while secondary actions only feed All conversions(opens the full-size image in a new tab)
    DiagramPrimary actions feed the Conversions column and bidding. Secondary actions are recorded in All conv. and nothing else.

    What Google suggested in one account in October 2026

    Here is the conversion setup of a US retailer we audited, for 1 to 30 October 2026. It is the same account we used in our post on Google Ads conversion tracking. The campaigns bid toward purchases, mostly with Maximise conversion value.

    Table of a retailer's Google Ads conversion actions showing purchase as primary and add to cart and begin checkout as secondary(opens the full-size image in a new tab)
    Real dataThe account's main conversion actions, 1 to 30 October 2026. Business name and IDs removed.

    Purchase is the only website action with a value, and it is primary: 177 conversions worth $76,915 in campaigns that cost $6,352. Add to cart (367) and begin checkout (119) are secondary, so they are recorded but don't bid. That part is right.

    Now look at what Google asked for on the same Goals page. A banner said two goals "cannot be used for optimisation because they do not have any primary conversion actions", and offered a Fix it button. The two goals were Add to basket and Begin checkout, both marked Misconfigured. Above it, a card labelled "Recommended by Google AI" suggested creating a Page view conversion, because "your retail business will see improved results". The linked GA4 property made its own suggestion the same week: mark 4,812 weekly add_to_cart events as key events.

    All three prompts push the same way: more actions that bid. Had we followed Fix it, the Conversions column for October would have read about 670 instead of 185, and cost per conversion about $9.50 instead of $34. Not one extra order would have arrived.

    Bar chart comparing 185 conversions as set up with about 670 if add to cart and begin checkout were primary(opens the full-size image in a new tab)
    Real dataSame 30 days, same orders. The second bar adds the account's recorded carts and checkouts to the Conversions column.

    Google flags them because campaigns use them for bidding while nothing in them can bid. The clean fix is to take Add to basket and Begin checkout out of the account-default goals, so no campaign bids toward them. The actions keep recording as secondary, and the warning should clear. Check that no campaign selects either goal directly as a campaign-specific goal.

    Myth

    Every conversion goal needs a primary action.

    Reality

    Only goals your campaigns bid toward need one. A goal you only want to watch can hold secondary actions and be left out of the account defaults. Google's Misconfigured label means the goal can't be used for bidding, which for a cart goal is the point.

    Which actions should be primary

    The rule is one sentence: make primary the action closest to money that happens often enough for bidding to learn from. Everything else is secondary. Here is how that plays out by business type.

    BusinessPrimaryCountKeep secondary
    Online shopPurchase, with the order valueEveryAdd to cart, begin checkout, add payment info, sign-ups, newsletter, page views
    Lead gen with a CRMQualified lead or closed deal, imported from the CRM. Form submit until the import worksOneForm starts, button clicks, page views, chat opened
    Lead gen without a CRMForm submit that reaches a thank-you page, and calls longer than your qualifying lengthOneClicks on phone numbers and email links, page views
    SaaS with a free trialTrial start, or paid subscription imported from billing once there is volumeOnePricing page views, demo page views, account created without a trial
    Local servicesCalls from ads over your qualifying length, and booked appointmentsOneDirection clicks, website visits

    Google's own guidance on counting backs this up. Every suits sales, because each purchase is worth something. One suits leads, because a second form from the same click rarely adds value.

    Three ways the wrong action ends up primary

    1. Following Google's prompts

    The Fix it button, the Page view recommendation and GA4's key event suggestions all appear in accounts that bid on purchases. None of them asks what the campaigns bid toward. Read them as suggestions to measure more, not to bid on more.

    2. Two actions for the same purchase

    A Google Ads purchase tag and a GA4-imported purchase, or Shopify's Google & YouTube app and a Tag Manager tag, can both record the same order. If both are primary, every sale counts twice and ROAS doubles. Google now creates GA4-based conversions as secondary when the account already has goals from that Analytics property, to avoid exactly this, but older imports and manual changes still slip through. Keep one purchase action primary and the other secondary.

    3. Account-default goals pulled into every campaign

    New campaigns use every account-default goal unless you choose otherwise. In the account above, the Sign-up goal holds four primary actions with no value and is used by 31 of 36 campaigns, so sign-ups count as conversions next to purchases. That is how a newsletter form ends up in a Shopping campaign's numbers.

    On the GA4 side, see which key events to mark, and for the same sale counted by two tools, double counting across GA4, Google Ads and Meta.

    When a micro conversion can bid

    Bidding needs volume. Google's Target ROAS page lists 15 conversions in 30 days as a requirement for Search and Shopping, and Demand Gen asks for 50 in the past 35 days, or 100 across the account. A new store with eight sales a month can't feed that, and a shallower action can carry the campaign for a while.

    Google documents how to move off a shallow action. For a Target CPA campaign bidding on an upper-funnel goal such as page views, it says to make the deeper action primary without bidding on it yet, track it for at least two to three conversion cycles, then swap the goals and raise the CPA target. If you start shallow, three rules keep it safe:

    • Bid on a micro action through a campaign-specific goal, never as an account default, so other campaigns aren't affected.
    • Pick the step closest to the sale: begin checkout before add to cart, add to cart before page views.
    • Write down the date you will switch back, and switch once the deeper action reaches the volume above.

    If several actions must bid together, Google's documented alternative is values: give each action a value that reflects what it is worth to you and bid on value, so a cart is never worth as much as a sale.

    How to change primary actions without breaking bidding

    1. Note which campaigns use which goals (Goals, then Summary shows the count for each), and save last month's Conversions, cost per conversion and ROAS.
    2. Make the changes in one go: one primary purchase action, everything else secondary, and goals you only watch taken out of the account defaults.
    3. Leave targets alone at first. Google says the Learning status never lasts more than 7 days, but performance can take up to one to two conversion cycles to settle.
    4. Expect reported conversions and ROAS to fall. That is the junk leaving the column, not sales leaving the account.
    5. After two cycles, adjust targets gradually to the new, honest numbers.

    One warning: Google's own pages disagree on timing. The page on Smart Bidding learning says the Learning status lasts 7 days at most. The primary and secondary help page still mentions a 7 to 14 day learning phase. Plan for two weeks of noise and don't judge the change sooner.

    Check your account in five minutes

    Quick check

    • Goals, then Summary: list the account-default goals. Each one should be a goal you want every campaign to bid toward.
    • Open each goal and count its primary actions. A purchase goal should have one.
    • Look for primary actions with no value in an account that bids on value, such as sign-ups and leads next to purchases.
    • Look for two purchase actions both set to primary: a Google Ads tag and a GA4 import, or the Shopify app and a Tag Manager tag.
    • Compare Conversions with All conv. for each action. Secondary actions should show only in All conv.
    • Build a custom column with Conversions filtered to your purchase action. That column, not the default one, is your ROAS.

    Ask yourself

    In your account, how many actions are primary right now? If the answer is more than one per business result, your Conversions column is counting things your bank account never sees.

    The free Google Ads Auditor grades your conversion tracking before anything else: whether the main conversion is a real business result, whether anything is counted twice, and whether purchases carry values. It reads 90 days of your account in about 60 seconds, read-only. Check which actions bid in your account

    Frequently asked questions

    What is the difference between primary and secondary conversions in Google Ads?

    Primary actions are counted in the Conversions column and used by Smart Bidding in campaigns that bid toward their goal. Secondary actions are for observation only: they appear in All conv. and don't affect bidding, unless you put them in a custom goal, where every action bids.

    Should add to cart be a primary conversion?

    Not in a shop that has enough purchases to bid on. Add to cart happens far more often than a sale, so as a primary action it inflates conversions and pulls bidding toward browsers. Keep it secondary. The exception is a new store with very few sales, through a campaign-specific goal and only until purchases reach bidding volume.

    Why does Google say my goal is misconfigured?

    Google flags a goal when campaigns use it for bidding but it has no primary action, so there is nothing to bid on. If it's a goal you only want to watch, such as Add to basket, take it out of the account-default goals instead of making an action primary, and check that no campaign selects it directly.

    Should a GA4-imported purchase be primary?

    Only if it's your only purchase action. If you also have a Google Ads purchase tag or Shopify's Google app sending purchases, keep one primary and the other secondary, or each sale counts twice. Google creates GA4-based conversions as secondary when the account already has goals from that Analytics property, for this reason.

    Will changing primary conversions reset Smart Bidding?

    It starts a short learning period. Google says the Learning status never lasts more than 7 days, but performance can take up to one to two conversion cycles to settle. Make all your changes at once, hold targets steady at first, and judge the result after two weeks.

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    Qudees Kiani, founder of Swishiy

    Qudees Kiani

    Founder of Swishiy. Five years of marketing measurement work across Google Ads, Meta and GA4, for ecommerce and lead-gen businesses.

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