Customer Lifetime Value in Google Ads: LTV Bidding Setup

Google Ads does not know what a customer is worth to you over time. LTV-aware bidding means deciding that yourself, expressing it as a value the platform can act on, and being honest about how uncertain the estimate is. Done carelessly, it is a way of paying more for the same customers and calling it strategy.

This page covers the definitions that have to come first, an illustrative contribution calculation, the three mechanisms Google actually offers, and the eligibility and consent conditions attached to them.

Define the Terms Before the Maths

Most lifetime value arguments fail because four things are left undefined. Fix them first and the number becomes arguable rather than decorative.

• • Contribution, not revenue. The only part of a future order that can fund acquisition is what remains after cost of goods, shipping and fulfilment, payment fees and expected returns.
• • A stated horizon. “Lifetime” is not a period. Pick one you can observe, for example 12 months from first order, and hold every comparison to it.
• • Retention and returns as probabilities. Expected repeat revenue is an average across a cohort, not a promise about any customer. Returns reduce it after the fact.
• • Payback and uncertainty. Contribution that arrives in month nine is not cash today. The further out the value sits, the less weight it should carry in a bid decision.

An Illustrative Contribution Example

Illustrative figures, chosen for arithmetic clarity. They are not a benchmark and not client data.

Three things about that £44. It is conditional: it holds only if the expected repeat revenue actually materialises across the cohort. It is not cash now: only the £40 relates to the first order, and even that is before overheads. And it is not profit: overheads, marketing costs beyond the acquisition cost, and any discounting of later value all sit outside this line.

Three Different Mechanisms

These are frequently conflated. They do different jobs, and mixing them without care is how accounts end up counting the same value twice.

• • Imported conversion data with values. You send Google Ads the conversion and the value you have decided on, from your own systems. This is where an offline or contribution-based value belongs, because you control the number. Google documents the import process in its help centre.
• • Conversion value rules. These adjust the value of a conversion in the auction based on conditions such as audience, location or device. They are an adjustment layer on a value you are already sending, not a substitute for measuring one. Google's documentation on value rules sets out how they interact with reporting.
• • Lifecycle goals. Campaign-level settings such as new customer acquisition goals change how a campaign treats new versus existing customers. New-customer value modes can add incremental customer value for bidding, alongside modes that prioritise only new customers; eligibility and campaign support varies. Google's lifecycle goals guidance sets out what each mode does and where it applies.

The Double-Counting Trap

If you send a predicted lifetime value at the point of first order, and later also send the real repeat orders as conversions, the same expected revenue is in the account twice. Keep actual purchases measurable in their own goal. Separate the financial actuals from the predicted bidding values, and design goals or value adjustments so the lifetime component does not overlap with later repeat-order conversions. Do not universally drop repeat purchases from measurement to avoid double counting; the fix is structural, not exclusion. Write the choice down, because it changes how every subsequent ROAS figure should be read, and see new customer versus repeat spend for how that split behaves in practice.

Eligibility, Privacy and Consent

• • Customer lists carry account eligibility requirements and policy conditions, and these are checked by Google rather than assumed by you.
• • The customer data you upload must have been collected and be usable for that purpose under your privacy notice and lawful basis.
• • Consent signals affect what can be collected and used in the first place, so measurement and audience plans have to be built on what consent actually permits.
• • Any value you import is still your claim about your business. Keep the derivation documented so it can be defended when the numbers are challenged.

Readiness Checklist

If you cannot tick these, the work to do is not in the bidding settings.

1. You can state a contribution rate per order, after cost of goods, shipping, fees and returns.
2. You have chosen a horizon and can observe cohorts over it, rather than assuming one.
3. You have repeat-purchase behaviour by cohort from your own systems, not an industry figure.
4. You know your payback period and how much later value you are willing to bet on.
5. You have decided which single mechanism carries the lifetime value signal.
6. You have confirmed eligibility and lawful basis for any customer data you plan to use.
7. You have a way to review whether the predicted value held, and to revise it when it does not.

Where repeat purchase is central to the model, our repeat purchase economics and retained Google Ads management pages cover how this gets maintained rather than set once.

Next Steps