Should calls, forms, and purchases all be primary conversions?

What "primary" actually does in Google Ads

A primary conversion is the only kind Google's automated bidding actually optimizes toward — so the label matters far more than most advertisers realize. In modern Google Ads, every conversion action is either Primary or Secondary. Primary actions are the targets: Smart Bidding (Maximize Conversions, Target CPA, Target ROAS) and Performance Max steer your budget to win more of them. Secondary actions are recorded in your reports for context, but they have zero influence on how the algorithm spends.

This is why the question isn't really "should I track calls, forms, and purchases?" — you should track all three. The real question is which ones tell Google what to chase with your money. Anything you mark primary becomes a destination the machine optimizes toward, even at the expense of the others.

The practical rule: a conversion earns "primary" status only if it represents an outcome you'd genuinely pay to get more of. A completed purchase qualifies. A booked consultation call qualifies. A real quote request qualifies. A newsletter signup, a brochure download, or three minutes on a page does not — those are signals, not sales, and they belong in Secondary.

Getting this wrong is one of the most common reasons an account looks like it's "converting" while the phone stays quiet and the bank balance doesn't move. If you've inherited an account or you're not sure how yours is configured, it's worth confirming your tracking is set up accurately before trusting any of the numbers your bidding is built on.

Calls, forms, and purchases — handled one at a time

Each of these three can be a valid primary conversion, but each comes with a condition. Treat them individually rather than flipping all three to primary by default.

Purchases are the cleanest case. For an e-commerce store, a completed transaction is the obvious primary conversion, and it should carry a real value (ideally the dynamic order total) so Target ROAS can weight a large order higher than a small one. Without values, the algorithm treats a candle and a sofa as equally desirable.

Forms are usually primary too — but only the forms that mean something. A "request a quote" or "book a consultation" submission is a genuine lead. A footer newsletter box or a gated PDF is not, and counting it primary will quietly pull budget toward low-intent traffic. If you run several forms, split them into separate conversion actions so you can promote the good ones and demote the rest.

Phone calls are where most accounts go wrong. A call is only a reliable primary conversion when it's tracked with intent — typically a Google call extension or a call-tracking number, counting only calls past a duration threshold (30 to 60 seconds is common) so hang-ups and wrong numbers don't pollute the data. Counting every ring as a conversion trains Google to chase calls that never become customers.

So: purchases (with values), qualified forms, and qualified calls can all be primary at once. Just make sure each one is filtered down to the version that actually represents revenue, and that you're not double-counting a lead who both calls and fills out a form.

The mistakes that quietly waste budget

The most expensive mistake is treating conversion counts as if they're interchangeable — they're not, and bidding doesn't know the difference unless you tell it. Here are the patterns we see most often when auditing accounts.

Everything is primary. When micro-actions (scrolls, time-on-page, PDF opens, newsletter signups) all carry the primary label, your conversion total balloons and your cost-per-conversion looks fantastic — while real leads flatten. The algorithm is doing exactly what you asked: maximizing the cheap stuff.

Mixing values and non-values. If a free form lead and a high-value purchase are both primary with no values assigned, Maximize Conversions treats them as equal. The fix is either separating them or assigning realistic values so the system understands which outcome is worth more.

Double-counting one customer. A lead who calls, then submits a form, then buys can register three conversions. For a single sale, that distorts CPA and ROAS. Decide what the one true outcome is per funnel and structure your primary actions so you're not paying credit three times for one customer.

Unverified call or import data. Offline conversion imports and call tracking are powerful, but if they're broken or duplicated, primary bidding inherits the error. Broken tracking doesn't just misreport — it actively misdirects spend.

The underlying principle is simple: primary conversions are instructions, not statistics. Mark the outcomes that pay you, value them honestly, demote everything else to secondary, and review the setup whenever campaign structure or your website changes. If you'd like a second set of eyes, a proper Google Ads audit checks exactly this before touching bids.

How we set this up for clients

We start by separating outcomes from signals, then only let outcomes drive the bidding. When we take on an account, conversion configuration is one of the first things we audit — because every dollar of automated spend is steered by it, and most accounts we inherit have it tangled.

In practice that means we map each conversion action to a real business result: purchases for e-commerce (with dynamic order values), qualified form leads, and properly filtered phone calls. Everything else — soft engagement, micro-conversions, assist signals — gets moved to Secondary so it's still visible in reporting but no longer pulling your budget around. For lead-gen clients, we go a step further and import offline outcomes where we can, so the system optimizes toward leads that actually closed, not just leads that submitted.

Because we run the full funnel — from the first click through to the final sale — we're not guessing which conversions matter. We can see which calls and forms became paying customers and feed that reality back into bidding, rather than optimizing toward whatever Google counted by default.

A few things that are baked into how we work and that matter here: your accounts and tracking data stay owned by you, so the conversion setup we build is yours to keep. Our reporting is transparent — you see which conversion actions are primary, what they're valued at, and how they're influencing spend, in plain language. And because we're month-to-month, we have to keep that setup honest and performing, not locked behind a contract.

If your conversion tracking has drifted, or you've never been sure whether your calls, forms, and purchases are configured correctly, that's a normal place to start a conversation.

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