<p>Within-person neuroanatomical changes and neurocognitive decline in Mild Cognitive Impairment (MCI) and Alzheimer’s disease (AD) differ from those observed in healthy older adults. Given the overlapping clinical presentations of MCI and mild AD, along with their differences, tailored and consecutive neuropsychological assessments can be required to determine the financial capacity of those with MCI and mild AD. The current literature on financial capacity lacks a comprehensive conceptual framework, and assessment tools often possess inadequate psychometric properties, focusing primarily on cognitive dysfunctions to determine financial capacity. Moreover, few longitudinal studies have been published to date, and the diversity of various cultural groups is underrepresented. Hence, we aim to provide a review of financial capacity assessment in MCI and mild AD, considering neuroanatomical, neuropsychiatric, and neuropsychological correlates, while defining and differentiating financial capacity from competency to identify limitations and gaps in the literature. Furthermore, we highlight clinical and methodological issues: (A) in evaluating financial capacity; (B) in recognizing cognitive markers of risk for financial exploitation; and (C) in assessment methods, from screening to comprehensive neuropsychological assessment. We also provide a summary of assessment scales used and practical recommendations for practice and future research direction.</p>