Crowdfunding is emerging as a significant means by which to finance and advance the 17 United Nations Sustainable Development Goals (SDGs). Generating financial support for the SDGs is now of even more importance because of the economic impacts of COVID-19. However, little research on sustainability crowdfunding has been conducted, particularly with respect to how behavioral influences, such as personality and subjective well-being, affect the willingness of individuals to financially support the different SDGs. To fill this gap, a theoretically comprehensive research model including the big five personality traits typology, value on SDGs, attachment to sustainability crowdfunding, subjective well-being, and three groups of SDGs was constructed and tested. Results reveal that agreeableness has the highest effect on value on SDGs among five personalities, followed by openness and conscientiousness. Unexpectedly, extraversion has a negative impact on value on SDGs and neuroticism has an insignificant effect on value on SDGs. Value on SDGs has a great effect on attachment, followed by subjective well-being. Attachment has the greatest effect on subjective well-being within this research model. Comparing fair distribution, efficient allocation, and sustainable scale groups of SDGs shows substantial differences with respect to the hypotheses.