What Is Zero-Party Data? Examples, Benefits, and How to Collect It
Clicks, website visits and purchase histories can show what customers do. They are much less useful at explaining why.
Zero-party data helps fill that gap.
It is information that customers intentionally choose to share with a business, including their preferences, intentions and expectations. For research and insights teams, that creates a more direct way to understand the people behind the behavioural data.
In this article, we explain what zero-party data is, how it differs from first-party and third-party data, and how it can support customer insights and market research.
The Privacy Reality Check
The way businesses collect customer data is changing.
Growing privacy expectations, stricter regulations, and browser policies that limit third-party tracking are encouraging organisations to rethink how they build customer insights.
Instead of relying solely on observed behaviour, many companies are now investing in data that customers willingly choose to share.
However, collecting information directly does not remove a business’s data protection responsibilities.
What Is Zero-Party Data?
Zero-party data is information that customers intentionally and proactively share with a business. Syno previously explored its benefits, limitations and role in modern data collection in an introductory report on zero-party data.
Rather than being inferred from browsing history or purchase behaviour, it’s shared directly through interactions like surveys, preference centres, quizzes, or account settings.
Examples include:
- Product preferences
- Purchase intentions
- Brand perceptions
- Communication preferences
- Personal interests
Example
Instead of assuming:
“This customer visited our pricing page three times.”
Ask directly:
“Are you planning to purchase a product or service from us within the next three months?”
Zero-Party vs. First-Party vs. Third-Party Data
Although these terms are often grouped, they describe different ways of collecting customer information.
| Data Type | How it's collected | Example |
|---|---|---|
| Zero-party data | Intentionally provided directly by the person | Survey responses, stated preferences, purchase intentions |
| First-party data | Collected directly through the organisation’s own channels and interactions | Website visits, purchases, app usage, email opens |
| Third-party data | Purchased or obtained from external sources | External audience segments or demographic datasets |
A simple way to remember the difference:
- Zero-party data = what people intentionally tell you
- First-party data = what your organisation collects through its direct relationship with them
- Third-party data = what external providers collect and supply
Why Zero-Party Data Matters
Zero-party data matters because behavioural data can show what people do, but it often cannot explain why they do it.
Used carefully, zero-party data can support:
- Better customer understanding
- More accurate audience segmentation
- Higher-quality personalisation
- Stronger customer trust
- A more transparent approach to customer data collection
Example
Imagine two customers who both visit the same product page.
Their behaviour looks identical, but one is researching for work, while the other is planning a personal purchase.
A short survey can reveal the difference immediately.
How Zero-Party Data Is Used in Market Research
Zero-party data can add valuable context to market research by capturing attitudes, motivations and intentions directly from respondents.
Researchers can use this information to segment audiences, test concepts, measure brand perceptions and explore purchase intentions.
When analysed alongside behavioural or transactional data, these responses can help put observed actions into context.
Surveys: One of the Best Ways to Collect Zero-Party Data
Surveys are a direct and flexible way to collect zero-party data when people understand what they are being asked and how their answers will be used. Tools such as Syno Survey make it possible to build questionnaires with logic, different question types and structured reporting.
The key is asking questions that have a clear purpose.
❌ Don’t do this
Ask 40 questions simply because you can.
✅ Do this instead
Ask only the questions you’ll actually use to improve products, services, or customer experiences.
Customers are far more willing to share information when they understand why it matters.
Common Mistakes to Avoid
Collecting better data doesn’t always mean collecting more data. Careful questionnaire design matters, so it is worth considering how to design a survey that people actually want to complete.
Some common mistakes include:
Asking questions you don’t plan to use
Every question should have a purpose.
Making surveys too long
A shorter survey usually delivers better completion rates and higher-quality responses.
Asking vague questions
Instead of: “How do you feel about our products?”, try: “Which three words best describe our products?”
Not explaining why you’re asking
People are generally more willing to share information when they understand how it will be used, so that a short introduction can make a big difference.
Final Thoughts
Zero-party data does not replace behavioural, transactional or other customer information, but simply adds the context those sources often lack.
Used together, these different forms of data can provide a clearer understanding of customers, their decisions and the reasons behind them.