The present article, Taxing for Change: Fiscal Policies and Sustainable Clothing Purchases in Portugal, aims to understand the impact of fiscal policies on sustainable clothing purchases in Portugal. Contemplating a survey of 175 participants, the research aimed to comprehend consumer perceptions and behaviors regarding sustainability in the fashion industry, as well as the influence of fiscal incentives and taxes on polluting materials. The research’s findings reveal that while sustainability is not the primary factor influencing purchasing decisions, there is a willingness among consumers to pay more for sustainable clothing, depending on the price difference. Fiscal incentives, particularly tax reductions for sustainable products, are broadly supported and seen as effective in promoting sustainable fashion. Nonetheless, the conducted study highlights challenges such as a lack of clarity regarding the sustainability of purchased products and the negative impact of high taxes on sustainable clothing prices. The study proposes that fiscal policies can be leveraged to promote the adoption of sustainable and ethical practices in the textile industry, but attention against disproportionate tax burdens on lower-income groups, proposing that to effectively promote sustainable fashion, a balanced approach that combines fiscal incentives, consumer education, and transparency in the supply chain is to be necessary. Ultimately, the presented research contributes to understanding consumer behavior in the context of sustainable fashion and may provide insights for policymakers and industry stakeholders seeking to foster more environmentally and socially responsible consumption patterns in Portugal.