In today's digital economy, user interface designs play a critical role in shaping consumer interactions with websites, apps, and online services. Among these are dark patterns design tactics intentionally structured to influence users into making decisions they might not have made with full awareness, also sometimes known as deceptive patterns. These include tactics like confusing language, hidden opt-outs, and visually deceptive layouts. While often subtle, these patterns can have a significant impact on consumer behaviour and financial outcomes.

This research examines the economic implications of dark patterns by analysing how they influence decision-making processes. Drawing on concepts from behavioural economics, the study explores how interface designs exploit psychological tendencies such as inertia, urgency, and loss aversion. Through case studies and industry analysis, it highlights the most prevalent forms of manipulative design and their measurable impacts, including increased consumer spending, unwanted subscriptions, and decreased autonomy.

The study also examines the broader implications for market efficiency and consumer trust, while comparing regulatory efforts in different regions. In conclusion, the research underscores the significance of ethical interface design and recommends targeted policy interventions to promote fairness, transparency, and accountability in the digital realm...