Introduction. Household food waste poses a significant global challenge, with critical environmental, economic, and social implications, contributing to greenhouse gas emissions and exacerbating food insecurity. Although various motivational drivers of food waste behaviors - financial, environmental, and moral - have been identified, few interventions have empirically tested how targeting these motivations through behavioral nudges can reduce food waste. Purpose. This study aims to evaluate the effectiveness of informational nudges based on financial, environmental, and moral motivations in reducing household food waste and enhancing corresponding awareness and attitudes. It also explores whether the impact of the nudges is moderated by participants' pre-existing motivations. Participants. The study will recruit students from the University of Milano-Bicocca and additional adults through snowball sampling, randomly assigning approximately 186 participants into three experimental groups aligned with the motivational framings. Data collection is currently ongoing. Methods. Over nine days, participants will receive tailored nudges via a mobile application highlighting one of the three motivational consequences of food waste. Repeated questionnaires assessing food waste behaviors, motivational scales, attitudes, emotions, and control perceptions will be administered at baseline, mid-point, and study conclusion. Data will be analyzed using repeated measures ANOVAs to detect changes over time and contrasts to assess match or mismatch effects between nudge type and participant motivation. Expected Results. It is anticipated that all groups will exhibit a reduction in food waste behaviors and an increase in awareness related to their assigned motivation. The study expects greater efficacy when nudges align with individuals' existing motivations, potentially revealing interactive effects between motivational drivers. The findings will contribute to the design of more effective, evidence-based behavioral interventions aimed at reducing food waste.