Breast cancer patients are faced with many decisions about their treatment, relationships and lives. The aims of this study were: to provide an understanding of the phenomenon of making decisions during the experience of early breast cancer, and to describe the types of decisions these patients are typically faced with. Previous research has focused largely on describing the different ways patients behave when making choices about treatment. However, few studies provide an understanding of the range of decisions women are likely to face, or describe what the experience of making these decisions is like. Hermeneutic phenomenology was used to inform the research. In‐depth interviews were conducted with 18 breast cancer patients who had completed treatment. This study provides an understanding of the broad range of decisions with which women may be faced, and presents a new interpretation of what the experience of making decisions is like for women diagnosed with breast cancer. Five existential themes were found to be representative of the experience of making decisions: being challenged, getting ready, surviving, sharing the challenge and interrogating the future. Health professionals can use the understandings presented to improve their therapeutic relationships with patients and further assist women as they work through their experience of breast cancer.