Existing literature suggests that financial knowledge alone is insufficient in producing the behaviors and outcomes that positively influence financial well-being; however, little attention has been paid to the other factors necessary to produce such outcomes. Financial decision-making ability, the psychomotor component of financial literacy, represents one promising candidate in addressing this gap. We introduce and validate a scale to measure financial decision-making ability and examine its role in improved financial well-being as well as the persistence of this relationship even after decision-making resources are depleted. Our research demonstrates the importance of financial decision-making ability in financial decision making and provides support for its inclusion in financial education. We also show that financial decision-making ability is an enduring resource for individual decision-makers in the face of decision resource depletion.