Zero-Party Data
Data & TrackingAlso: Zero Party Data · Explicit Data
Quick definition
Zero-party data is information a customer deliberately and proactively shares with a business, such as preferences, purchase intentions or personal context, usually through a quiz, preference centre or survey. It differs from first-party data, which a business infers by observing behaviour rather than being told directly.
How it varies across Australia
Adoption of zero-party data collection varies widely across Australian sectors. Ecommerce and beauty brands lead with preference quizzes and style profiles, while B2B and finance categories collect far less of it despite having the most to gain from better segmentation.
See data and tracking maturity across Australian industries →What it actually means
Zero-party data is the stuff a customer hands you on purpose. A skincare quiz that asks about skin type. A preference centre where someone ticks 'email me about sales, not new arrivals.' A checkout field asking why they're buying a gift. None of it is inferred from a click trail. It's stated, directly, by the person it describes.
This makes it more reliable than first-party data, which is built from behaviour and always carries a layer of guesswork. It also sidesteps the mess of third-party data, which relies on cookies and external data brokers and is increasingly unavailable as browsers restrict tracking.
The catch is that zero-party data only exists if you ask for it, and asking has a cost. Every quiz field or preference toggle is friction between the customer and the thing they came to do. Businesses that ask too much end up with high dropout and thin data. The businesses that get this right ask for one or two things, use the answer visibly and quickly, and expand the ask over time as trust builds.
Done well, zero-party data becomes the backbone of segmentation and personalisation without needing to lean on consent-hungry tracking pixels.
First-party data tells you what someone did. Zero-party data tells you what they actually want. Most businesses only ever build the first kind.
How it shows up
Zero-party data shows up as quiz results feeding a customer relationship management (CRM) field, preference toggles inside an email platform, onboarding surveys that set a lifecycle segment, or a checkout question that routes someone into a different campaign. The tell that it's being used well is that the next message someone receives reflects what they said, not a generic blast.
The Australian context
The Privacy Act reforms moving through Australian parliament are pushing businesses toward data they can defend, and zero-party data is the cleanest version of that. It's given with explicit context, which makes consent straightforward compared to third-party data sourced from brokers whose collection methods a business can't fully account for.
Australian consumers also tend to be sceptical of data requests that feel excessive relative to the transaction. A five-field skincare quiz before a ten-dollar sample feels like a bad trade. Match the ask to the value on offer or the completion rate collapses.
Where people get this wrong
Related terms
Common questions
Is zero-party data the same as first-party data?
No. First-party data is collected by observing what a customer does, like pages visited or products bought. Zero-party data is what a customer directly tells you, like a stated preference. Zero-party data is a subset of the broader first-party relationship, not a synonym for it.
Why is zero-party data becoming more important?
Third-party cookies are disappearing and privacy rules are tightening, which makes broker-sourced data harder to rely on and defend. Zero-party data is collected with explicit context and consent, which makes it more durable as tracking restrictions increase.
How do I start collecting zero-party data?
Start small. A single preference question at signup, a one-question post-purchase survey, or a lightweight quiz tied to a real benefit like better recommendations. Expand the ask only once you're demonstrably using the answers to improve what the customer sees.
Does zero-party data replace the need for tracking pixels?
Not entirely. Zero-party data is strong for intent and preference but thin on volume and ongoing behaviour. Most mature marketing set-ups combine zero-party data with first-party behavioural data rather than relying on either alone.
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About New Rebellion
New Rebellion is a marketing intelligence consultancy. We build tools, score Australian businesses on how their marketing actually performs, and publish Debrief every day. This dictionary is part of how we work in the open.
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