To make effective financial decisions, individuals need both financial and numerical competence. The latter includes having numerical knowledge and skills, and the ability to apply them in a financial context. A positive attitude towards numbers, combined with the absence of math anxiety, proves beneficial. Additionally, higher-order numerical skills enhance the quality of financial decision-making. Challenges in any of these numeracy aspects may contribute to
financial difficulties. However, the specific aspects of numeracy that are of crucial importance remain unclear. Therefore, our research addresses the question: Which aspects of numeracy are related to having financial problems? In this article, we explore this question through a literature review.