Clarifying preservation intentions is likely to be a good starting point for preservation planning for diverse digital collections. This applies both in terms of identifying what needs to be kept and what does not warrant the use of limited preservation resources, and in terms of opening up conversations about what is required in order to achieve preservation intentions. This paper describes an approach being explored by the National Library of Australia to negotiate formal and reviewable statements of 'preservation intent' for each of the digital collections in its care with those responsible for those collections. The paper looks at the relationship with the widely discussed concept of 'significant properties', as well as the other benefits that the approach is delivering. The paper also looks at the preservation intent statements for archived web collections at the NLA as an illustrative case.