Perovskite/silicon tandem cells have recently shown remarkable progress in solar-to-electrical power conversion efficiencies (PCEs). Despite achieving record efficiencies, the prevalent fabrication technique for perovskite layers—spin coating—faces significant scalability challenges due to its limited throughput and material wastage. Scalable linear printing techniques, such as blade coating, are important predecessors and vibrant prospects for exploring and meeting industrial manufacturing demands using solution-based inks. Here, we greatly improve the performance of blade-coated tandems by introducing 2D perovskite layers at the bottom interface. These modifications enhance the blade-coated tandem performance to a certified PCE of 31.2%, owing to efficient charge extraction and interface passivation. This work demonstrates the efficiency potential for scalable ink-based fabrication, emphasizing stability and manufacturability, which are crucial for the widespread adoption and commercial success of this promising photovoltaic (PV) technology.